My report on the annual meeting of the European College of Sport Science is
now available at Sportscience http://sportsci.org . If you attended this
conference and feel that I have got something wrong or left out something
important, please get back to me ASAP and I will update the report.
I have also made some minor updates/corrections to the H index section of
the article on impact factors. Theodoras Bompouras sent me Hirsch's
original scholarly paper on the H index, in which he did actually account
for the effect of years of productivity, so I have added that info and
calculated Tom Reilly's H "rate" (H per productive year). Also, the H index
is based on a publication count greater than or equal to the cites, not
greater than the cites. Tom Reilly's H index therefore goes up a notch.
Will
Will G Hopkins, PhD FACSM
Contact info: http://sportsci.org/will
Sportscience: http://sportsci.org
Statistics: http://newstats.org
Be creative: break rules.
Manchester United is looking for a sports nutritionist:
There are currently 2 EIS Senior Performance Nutrition posts being advertised both to work with UK Athletics – one Full time based in the midlands and the other part-time (22h/3d per week) based in London.
These posts are also advertised on the EIS (www.eis2win.co.uk http://www.eis2win.co.uk/>) and UK Sport website
*Closing Date: **Friday 10th July 2009** at **1pm** (**GMT**) *
You may also be interested to note the part-time Sports Dietitian/Nutritionist role with Manchester United FC is currently being advertised on UK Sport website or email steve.mcnally@manutd.co.uk
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An article on the latest journal impact factors is now available at
http://sportsci.org . It includes a description of a new citation
statistic, the H index, and an analysis of Tom Reilly's value.
Will G Hopkins, PhD FACSM
Contact info: http://www.sportsci.org/will
Sportscience: http://sportsci.org
Statistics: http://newstats.org
Be creative: break rules.
I've been looking at this problem from a physics perspective. Unlike for the case of the human runner, I don't see any resonances in the mechanical model for a cyclist. In that case wouldn't the internal power expended by a cyclist in leg movement be proportional to the cadence cubed?
I think this is correct based on dimensional analysis (1) and an analogous physics-based model (2). Does anyone know of any research on this topic other than the paper by Hansen, et al. (3)?
Ted Andresen Florida, USA
(1) In fundamental units (Mass-Length-Time) Power= F*V=M*(L/T^2)*(L/T)=ML^2/T^3. Since cadence is inversely proportional to time, Power is proportional to the cadence cubed.
(2) A simple model consisting of a set of (foot/shank) masses at the ends of a crank repeatedly accelerated up and down through the horizontal would require a power input of P = m*d^2/t^3. (If I carefully pick some typical values for the variables, I can come up with about 90 watts at 100 rpm. I would put very little faith in that value.)
(3) Ernst Albin Hansen Æ Lars Vincents Jørgensen, Gisela Sjøgaard, A physiological counterpoint to mechanistic estimates of ‘‘internal power’’ during cycling at different pedal rates, Eur J Appl Physiol (2004) 91: 435–442, DOI 10.1007/s00421-003-0997-x
From: Coyne, Louise
[mailto:L.Coyne@...] On Behalf Of Cable,
Tim Sent: 12 June 2009 12:15 Subject: Tom Reilly
Dear Friends
It is with the deepest sadness that I inform you that Tom Reilly died on the
afternoon of Thursday 11th June. He had been in hospital for
the past week or so, during which time his condition deteriorated. I have
just spoken with his wife, Jill, who was comforted by the fact that he was in
no pain during the final few days. I know that you will share the sense
of loss we all feel.
Tom was unique.
He was a very private man who was universally respected and admired by all.
He was a deeply compassionate and loyal man, profoundly interested in the
development of others before himself. His intellectual powers knew no
boundaries, providing deep insights into the worlds of philosophy, literature
and the use of English language. But, outside his family, his passions
were science (particularly kinanthropometry-on which he completed writing a
textbook in the last week!), Everton, Everton, Football in general
(many codes but mainly the round ball shape) and Ireland. He was a
voracious reader and writer and his motivation and dedication to acquire and
disseminate knowledge appeared endless.
He applied his bountiful energy in the realm of academic leadership, both
within and outside this institution. He was the first ever Professor of
Sports Science in the UK, and helped forge the rich heritage of sport and
exercise scientific study at Liverpool Polytechnic, LJMU and beyond. As his
reputation of excellence grew, his influence extended Nationally and
Internationally, leading many initiatives and effecting change in policy and
practice in many esteemed organisations. Perhaps the most profound legacy
has been his mentoring of staff and postgraduate students (his self-titled
“Liverpool Mafia”) that now exert significant ripples of influence across all
walks of society, but particularly within HE. In this way, over the
years, he has been responsible for germinating the seeds of our young
discipline.
But despite these powerful academic credentials, Tom will remain in my mind as
a very warm, intensely caring and very humorous individual, whose eye always
had a twinkle.
I know you thoughts will be with Jill and his daughters, Anna and Siobahn.
When I have any further news of arrangements I will let you know.
Sincerely
Tim
Faculty
of Science
Louise Coyne
PA to Director
School of Sport and Exercise Sciences
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Sport neuroscience is likely to be a next big thing!
Understanding how the brain relates to sport / enhances performance remains
poorly understood. If you are interested in this area, and would be interested
in carrying out research for a PhD (or know someone that would), then please
consider the following opportunity.
We have a scholarship available that will fund PhD research into the
neuroscience of movement imagery. The scholarship is £12.5k tax free and will
be run at the University of Bangor, UK
(http://www.bangor.ac.uk/cohabs/funded_studentships.php.en).
Let me know if you would like further details.
Yours Sincerely
Martin Edwards
--
Martin Gareth Edwards (PhD)
School of Sport and Exercise Sciences
College of Life and Environmental Sciences
University of Birmingham
Birmingham
B15 2TT
(44) (0)121 4144109
MartinGEdwards@...http://psy-naps.org
June Issue (Volume 8, 2009) of the Journal of Sports Science
and Medicine is now available for you to access the abstracts and the full
articles in http and pdf formats.
I would like to, once again, welcome you to the JSSM and
express my gratitude for your support to the JSSM.
2007 Impact Factor: 0.290 Rank in Sports Science
Journals: #58 of 72.
The Journal of Sports Science and Medicine is indexed in SCI Expanded, Focuson: Sports Science &
Medicine, SciSearch, ISI Journal Master List, EMBASE,ProQuest (Physical Education Index), EMNursing,
COMPENDEX, GEOBASE, SCOPUS, Index Copernicus, SPORTDiscus, DOAJ, J-Gate,
GoogleScholar and SPONET
13-) INITIAL METABOLIC
STATE AND EXERCISE-INDUCED ENDOTOXAEMIA ARE UNRELATED TO GASTROINTESTINAL
SYMPTOMS DURING EXERCISE
José Moncada-Jiménez, Eric Plaisance, Michael L. Mestek,
Felipe Araya-Ramírez, Lance Ratcliff, James K. Taylor, Peter W. Grandjean and
Luis F. AragónVargas
19-) VALIDITY OF THE
EMOTIONAL INTELLIGENCE SCALE FOR USE IN SPORT
Andrew M. Lane, Barbara B. Meyer, Tracey J. Devonport, Kevin
A. Davies, Richard Thelwell, Gobinder S. Gill, Caren D.P. Diehl, Mat Wilson and
Neil Weston
The NZ Academy of Sport : South
Island(NZAS-SI) NEW ZEALAND is seeking the services of a highly skilled and
motivated person to join the Performance Services Team as lead Strength and
Conditioner.
The position is currently able to be
supported at a level of 0.6 FTE-approx 3 days per week. Ideally this would suit
someone who can bring some existing roles/work with them, or can support
additional roles i.e. nutrition/physiology.
It is the intention of
the Academy, in partnership with the successful applicant to grow this into a
full time role over 12 months. This is dependant, on generating additional
income streams to underpin the role. The contract would initially be for 2
years.
The successful applicant will
support the NZAS-SI core values of achievement, accountability, innovation,
making a difference, excellence, continuous improvement, and leadership
development.
As lead Strength and Conditioning
coach you will oversee support to several sports, ensuring best practice
services are provided to athletes and coaches. This will involve planning and
delivery of strength and conditioning services including scientific profiling
of designated athletes, utilization of current scientific knowledge in
servicing and in education of athletes and coaches in strength and
conditioning.
As a key team member you will work
well in a multidisciplinary environment as well as leading the development of
an effective strength and conditioning team in the Canterbury region. Direction
and support for the position will come from Dr Angus Ross-Performance
Physiologist and Head Strength and Conditioner for NZAS-SI.
You will also play a key role in
managing the new training facility, which includes enhanced training spaces
featuring recovery facilities, Hydrotherapy pool, expansive training area and
soon to be completed indoor running track.
If you have at least 5 years of
practical experience in a similar position within an elite sport environment,
demonstrated success in effective working relationships with coaches and
athletes, and relevant qualifications, this is an excellent opportunity to join
a motivated team.
The successful applicant would
ideally have the following;
·Minimum of five years practical
strength and conditioning experience as a scientist in the elite sport
environment working closely with both athletes and coaches in the planning and
delivery of strength and conditioning services.
·Demonstrated ability to facilitate
change in athletes and coaches based on the body of scientific knowledge in the
peer reviewed literature and/or by undertaking applied research that addresses
issues pertinent to the target group.
·Proven ability to work within a
multidisciplinary team while also being able to multi-task, work independently
and possess a high level of personal initiative and autonomy.
·Highly developed oral and written
communication skills, including demonstrated
effectiveness in negotiation, communication and consultation with athletes and
coaches from diverse sports and backgrounds.
·Familiarity with analysis technology
and software to support strength and conditioning.
·Ability to undertake basic
scientific monitoring, HR, lactate, skinfolds etc.
·Personal background in competitive
sports is a plus but not a necessity.
Please send a current CV including
professional development activities undertaken, and a brief cover letter outlining
your suitability for this position by June 5th to;
Check out the Home of NZ Academy of Sport : South Island Online -
http://www.asi.org.nz
The information contained in this email is confidential and
intended for the addressee only. If you are not the intended recipient, you are
asked to respect that confidentiality and not disclose, copy or make use of its
contents. If received in error you are asked to destroy this email and contact
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This e-mail message has been scanned for Viruses and Content and cleared by MailMarshal
Sorry for the long post, but I thought it might be helpful to someone. Last week there was some mention of the internal energy expenditure of a cyclist. The internal energy is the energy spent in just moving the legs.
I'm a retired aerospace engineer. My background is in applied physics and mathematical modeling. Now that I am retired, I can tinker with any problem I choose. Because I am a runner, I work with the spring-mass (SM) model and a two-segment leg (2SL) model. I use them to understand the decrease in a runner's power expenditure at the Preferred Step Frequency (PSF).
By using a similar approach I believe that it is possible to build a physics-based model to calculate the internal power expenditure of a cyclist as a function of cadence.
The model would represent the cyclist's legs and crank as a 3-segment model. It would use a Lagrangian formulation to generate the equation of motion. This is not the same as Kautz's approach. That was an experimental effort to measure the internal energy, the Lagrangian approach would be a first-principled calculation of the internal energy. Later it could be verified with a passive mechanical model.
The first part of the effort would be to find a geometry for the problem. Each segment would have its own mass, length and radius of gyration. (Winter's anthropometric parameters could be used for the leg segment parameters.) I believe there is only one independent angle, so the problem only has one degree of freedom. This greatly simplifies the mathematics.
(There is a slight problem of duplicity in the knee angle -- the knee could be on either side of the seat-pedal line. However, I think this duplicity can be removed in the formulation.)
The next step would be to write the Lagrangian for the system. The Lagrangian requires expressions for the potential (V) and kinetic (T) energy of the three segments. That's pretty easy. I have lots of experience in that area. I could help write the Lagrangian (L=T-V), if it would help.
The next step would be to process the Lagrangian through the Euler-Lagrange equation to generate the equation of motion. That is easy with a symbolic manipulator. Unfortunately, I could not do this with Matlab/Maple for my 2SL model because of the double differentiation of the Lagrangian. I am not certain, but I think it could be done with Mathematica. I used Mathcad (8). If you use Mathcad I could help set up the problem, but you should understand how and why the solution works. The equation of motion would give the angular acceleration of the crank in terms of the physical properties of the three segments, the position and angular velocity of the crank and the input crank torque.
I used my equations of motion in a Runge-Kutta algorithm to calculate the power required by a runner to move their swing leg forward during the stance phase. You could do a similar calculation over a complete crank rotation.
From the crank acceleration function I think that it is possible to calculate the internal power requirement as a function of cadence. For verification the model's output could be compared with a simple physical model made of wooden boards pinned to the seat and the pedals of a lab cycle driven by an external motor at different cadences.
If anyone is interested in this approach, feel free to contact me. If you use Mathcad, I'd be glad to help you workout the Lagrangian, come up with the equations of motion and work through the Runge-Kutta algorithm. It would be an interesting problem.
Lecturer/Senior Lecturer, Physical Education (PDHPE)- University of Western Sydney
We are seeking to appoint a Lecturer/Senior Lecturer in physical education (PDHPE). You will hold a PhD in a relevant area, have a research track record, and will be experienced in contemporary methods of learning and teaching. You will have ability to teach into general areas of physical education with expertise in one or more of child and youth physical activity and health, outdoor recreation, aquatic sports, and general exercise and sport science.
Remuneration Package: Academic Level B $88,749 to 104,683 p.a.; Academic Level C $107,853 to $123,724 p.a. (comprising Salary,17% Superannuation and Leave Loading)
Hello there, from rainy South Florida.
Our department does have three visiting lines for Fall 2009, starting in
August (health promotion, need minimum masters; ABD or PHD for these
two, exercise physiology and strength/conditioning). If you know of
anyone who might be interested, please forward this email to them. I
have listed the positions with FAU numbers below. They can go to
http://jobs.fau.edu to apply.
I will be at ACSM next week and can meet with anyone you suggest or just
have them contact me directly on my cell, 954-675-5782.
Regards, Sue
SGRAVES@...
B. Sue Graves, Ed.D., FACSM, HFS, FISSN
Chair, Department of Exercise Science
and Health Promotion
Florida Atlantic University
Change of address and new telephone numbers are below:
777 Glades Road, FH-11
Boca Raton, Florida 33431
561-297-2938 (secretary)
561-297-2790 (direct)
561-297-2839 (fax)
www.coe.fau.edu/eshp
Dear Ted,
I can suggest you to take a look at two papers:
1- Muscular function during ergometer cycling. Ericson (1988).
Scandinavian Journal of Rehabilitation Medicine 20 (1), pp. 35-41.
2- Power output and work in different muscle groups during ergometer
cycling. Ericson et al. (1986). European Journal of Applied Physiology and
Occupational Physiology 55 (3), pp. 229-235.
In both papers the authors report mechanical workload with no external load.
I would also suggest the review paper:
1- Biomechanical Determinants of Pedaling Energetics: Internal and
External Work Are Not Independent. Kautz & Neptune (2002). Exerc. Sport Sci.
Rev., Vol. 30, No. 4, pp. 159-165.
This last one focus on the mechanical energy transfer between segments and
how does it relate to internal work (i.e. work to move the legs).
I hope they all help you.
Regards,
Rodrigo Bini
________________________________________________
Rodrigo Rico Bini, PhD Student
Institute of Sport and Recreation Research New Zealand
School of Sport and Recreation
AUT University
90 Akoranga Drive, Northcote
North Shore City, Auckland 0637
New Zealand
Phone: +64 9 921 9999 ext 7295
<http://www.ufsm.br/gepec> www.ufsm.br/gepec
<http://sites.google.com/site/binirodrigo/>
http://sites.google.com/site/binirodrigo/
Does anyone know where I might find measurements for the mechanical power required for a cyclist to move his or her legs on the crank as a function of cadence with no load?
Although they are not the same, I would like to compare those values with the ones I obtain for a runner when I use the 2-segment leg model to calculate the runner's power expenditure in leg-movement.
One possible way to measure the power required for leg motion might be to have a cyclist sit passively on a stationary bike while an external motor moves their legs.
The issues surrounding concurrent training are that endurance based
activity can limit hypertrophy and strength development within athletes. If the
aim for the athlete isn't to increase lean mass but
increase relative strength through neural mechanisms then is
concurrent training such an issue?
I understand also that AMPK(activated through endurance based activity) can
inhibit mTOR and thus the protein synthesis pathway but again is the blocking of
this process such an issue with athletes where the aim is to maintain lean
tissue mass and improve strength/power of the individual? Could this blocking of
mTOR actually be used in training of athletes so that the loaded weights session
is immediately followed by a period of endurance based activity to limit the
protein synthesis due to occur in the body?
Thanks,
Barry Shillabeer
Barry.shillabeer@...
See below for the contents of the developing 2009 issue of Sportscience.
Access these articles and more at http://sportsci.org/2009 .
NEWS & COMMENT-In Brief
Editorial: Sportscience Reformatted and Revisited
Progressive Statistics Updated
PERSPECTIVES
Fourier Series Approximations and Low Pass Filtering. Steve Elmer, Jim
Martin
The Improbable Central Governor of Maximal Endurance Performance. Will
Hopkins
The Second International Congress of Complex Systems in Sport. James Croft,
Chris Button, Matt Dicks
Will G Hopkins, PhD FACSM
Contact info: http://www.sportsci.org/will
Sportscience: http://sportsci.org
Statistics: http://newstats.org
Be creative: break rules.
Dear all,
If you're interested in research design, measurement, and biostatistics, and are
planning to attend the forthcoming ACSM Annual Meeting in Seattle, please come
along to the Biostatistics Interest Group Meeting. The meeting is on Wed 27 May
from 5.45-7.15 PM in Room 201 at the Convention Center. We would be glad to see
you if you have any exciting ideas for session content for the 2010 meeting, or
if you just want to chat more generally.
We look forward to seeing you in Seattle.
Best wishes,
Alan.
Alan M Batterham PhD FACSM
Teesside University, UK.
Role Purpose A suitable candidate would assume responsibility for the management and lead delivery of a number of SPECS modules. These specifically include pedagogical and theoretical modules such as: (Applied Coaching Theory & Advanced Kinesiology). The ability to contribute to the delivery of physical education within the School's PGCE primary and secondary PE programmes would be an advantage. Additional contributions will be negotiated on the basis of each individual's background and expertise. The post will include supervisory work on placement and dissertation modules, as well as a contribution to postgraduate programmes (MPhil B in Coaching and PE). Lecturers appointed to the College of Social Sciences are required to maintain an active research profile.
Person Specification
Main Responsibilities • To teach and examine courses at all levels, ie undergraduate, postgraduate and/or higher research degree students, through lectures, seminars and personal supervision. • To plan and review own teaching approach • To develop and apply innovative teaching approaches and materials to enable learning and enthuse students • To develop programme proposals and contribute to the wider design of the School's teaching programme • To review on a regular basis course content and materials, updating when required • To undertake the full range of responsibilities in relation to supervision, marking and examining to ensure that students progress is being monitored and reported in line with the School's procedures • To develop approaches to teaching and learning which are appropriate for the University and subject area and reflect developing practice elsewhere • To disseminate innovative practices through appropriate media • To engage in scholarly activity that will enhance the School's and University's reputation such as membership of academic bodies and external examining bodies. • Contribution to the running of programmes, as well as modules delivered and/or assessed by them; • To develop innovative research proposals and lead funding bids which develop and sustain research support in the specialist area • To secure research funding for innovative projects
Planning and Organising • Plan for and set teaching objectives over a number of years • Plan and manage own teaching and tutorials as agreed with the Head of School. • As with all other members of staff, the Lecturer will be expected to contribute to the wider life of the School and College of Social Sciences and undertake duties as required by the Head of School.
Potential applicants seeking further information about the post are invited to contact Dr Symeon Dagkas, Programme Coordinator Sport Physical Education and Community Studies at s.dagkas@... ; tel: 00441214158389
Knowledge, Skills, Qualifications and Experience Required • PhD and preferably experience in teaching in higher education • Good communication and presentational skills; • The ability to work flexibly as part of a team and to lead initiatives; • A willingness to contribute to and develop cross disciplinary research and teaching; • A commitment to equal opportunities and democratic means of academic planning and working as a member of a team;
NOTE TO CANDIDATES
In the absence of being awarded a PhD to date or if working towards a PhD it will be possible to consider an application, but on the basis that the duties and terms of employment would be amended to reflect this. Further details to be made available.
Internal/External Relationships • Communicating complex and conceptual ideas • Participate in and develop external networks
Hello Jim,
If you are looking for reasing I would suggest reading the articles of the
CGM. Noakes describes the most complex/overall model of different forms of
fatigue. They describe several possibilities where fatigue can be sensed. I
could also do some mathematical modeling for fatigue. In my own mathematical
models I use a slightly differed definitions namely:
preserved intensity =The time an athlete can keep going on while the neural
input is at its maximum (this is not entirely correct translated but do not
know the right English words). This is not a form of fatigue (no power loss)
an can be set by a CGM.
Fatigue = unwilling los in maximum power output there are 3 forms off
fatigue:
1. Fat 1 = power loss due decrease in Ca release: due to???
Possibilities are
1; not all Ca2+ is reabsorbed by the SR but diffused in to the
blood,
2; a deficiency of neural transmitters,
3; a decline of sensitivity of the receptors in the central nerve
system (CNS),
4; a decline in the amount of motor neurons that are receiving
neural input
2. Fat 2 = power loss due decrease in glycogen
3. Fat 3 = power loss due metabolic state (muscle and blood are
combined even do the equation is based on a decrease in binding capacity of
actine/myosin (in literature pH, ADP, Pi AMP and some other variables are
reported to influence the pCa-force relation which does not accrue in the
blood compartment but in my metabolic models the activation of the
cardiovascular response is a slave to the metabolic state in the muscle)
Of course this is just one set of definitions and there are probably many
more ways to look at fatigue. But If you sent me powertap/SRM file ore other
description of the type of exercise I tell where the cyclist was performing
at its maximum performance (I need some points to make a fit on the most
clear fit is made to do a couple of sort all out paces) I can calculate for
you the power loss due the each off the 3 forms fatigue. Of course this is
just a global estimation because I don't have the whole metabolic profile of
the cyclist.
Martijn Carol
Techniek en Conditie Training
Bezoek adres:
Kleverlaan 204, Haarlem
Post adres:
Vondelweg 2
2025 AA Haarlem
tel: 06-44074291
fax: 023-5376280
info@...
www.stct.nl
Hi,
I've recently switched from running, to cycling, and have been
adjusting to the different demands of the event. Running is pretty
much a continous activity, and I can understand the nature of fatigue.
However cycle races relies on continous bouts of sprinting along with
a base of aerobic work, and I am struggling to understand the nature
of the fatigue here.
What is it that slowly drains away the ability to sprint?
Is it caused by reduced energy supply - the body stops being able to
replenish sufficient ATP for the type II fibres to use? Or is it
inhibited by the presence of some waste product - cyclists often swear
by using a lactic acid buffer such as sodium phosphate, but I don't
know if this specifically relates to improving the repeated sprint
ability. Or is it something else.
My searching has turned up many interesting articles, but little that
has helped me in resolving my questions. If anyone knows more, or
could point me in some good directions, it would be appreciated!
Cheers,
Jim.
I just received this message and offered to help by forwarding it to this list. It’s from a writer who wants the latest info on athlete genes and gene testing for an article in a fashion magazine, Marie Claire. I’ve highlighted in red the key issues and questions in her message. I haven’t kept up with this stuff lately, so if you know of any recent interesting developments I would love to hear about them. Either send something to the list or to me and I will assemble into a summary for the list. Alternatively if you know of someone who could help her, let her or me know.
Will
(A devotee of America’s Next Top Model and Project Runway)
From: joanne chen [mailto:joannelchen@...] Sent: Saturday, 18 April 2009 6:37 a.m. To: will.hopkins@... Subject: interview request/marie claire
Dear Dr. Hopkins:
I'm a writer in New York who is working on a story for Marie Claire about personalized fitness, and in it, I want to talk a little bit about the new companies that assess your genes for inherent athletic abilities, and tell you whether you'd be better at power sports or endurance sports. As you can imagine, these are popular with parents trying to find out how best to bring out their kid's talents. I was wondering whether this was something you could comment on--I was doing some research on the web and came across your 2001 paper in Sportscience on "Genes and Training for Athletic Performance."
Would you have a few minutes to respond to a few questions via email (below) or chat on the phone next week (I think you are 14 hours ahead)? I'd like to find out: Are these tests helpful? Are they a waste of time and money?
How much do genes really affect athletic performance, and is it possible to change what
you're born with? And to what extent? What has changed since you've written that paper?
Thanks so much for considering this. I'm eager to hear your thoughts.
Want to receive emails when new jobs are posted? Open a FREE
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University of South Australia
– School of Health Sciences
Lecturer in Human Movement
(Growth and Motor Development) – Level B, Continuing position
Salary range – $68,953 -
$81,883 per annum
Total Remuneration Package
approximately - $81k - $96k per annum
The total remuneration package
includes salary, employer super contributions of up to 17% salary and annual
leave loading.
The School of Health Sciences, University
of South Australia is seeking to appoint a motivated, energetic individual with
a track record in Human Movement to join its teaching and research team. The appointee will be responsible for teaching growth
and development to undergraduate students, particularly those students within
the Bachelor of Applied Science (Human Movement and Health Studies) program and
students within the Bachelor of Education (Primary/Middle) who are specializing
in health and physical education. The appointee will also be expected to
contribute substantially to the national and international research profile of the
School and will be expected to supervise research students, continue to develop
research in this area and obtain external grant funding. A key focus for the
role will be the development of an innovative and contemporary approach to the
teaching of this core discipline within the Human Movement and Health Studies
program. Please see the following website for further information Job
application and position description or contact Associate Professor Annette Raynor for further
information Annette.Raynor@...
Dear Colleagues
I have recently posted a job opening within the Exercise Biology lab here at
PBRC:
http://www.pbrc.edu/Careers.asp?jobid=868
Apply:
http://lsusystemcareers.lsu.edu
If you know anyone who might be interested or have avenues to pass it around
please do.
Thanks,
Conrad
___________________
Conrad Earnest, PhD
Director: Exercise Biology Laboratory
Pennington Biomedical Research Center
6400 Perkins Road Baton Rouge, LA 70808-4124
Tel. (225) 763-2923
Fax: (225) 763-0905
EM. Conrad.Earnest@...
Description:
The Pennington Biomedical Research Center, a research facility of Louisiana
State University System, seeks a qualified applicant for the position of
Research Associate for the Exercise Testing Core Laboratory. The primary
responsibilities for this position include the performance of ECG monitored
graded exercise tests, the writing of subsequent exercise prescriptions and
conducting dynamic isokinetic dynamometer testing for various research studies
conducted at Pennington. Other testing needs will be addressed on a
study-to-study basis.
Qualifications:
Applicants should have a Masters (preferred) or a bachelor's degree (minimum
qualification) in exercise physiology, nursing or a related health science
field. Experience in the following areas include: at least 1 or more years of
experience supervising exercise tests in healthy and at-risk populations (i.e.
cardiac rehab, etc.), CPR/AED certified, experience conducting dynamic
isokinetic dynamometer testing, and capable of reading EKG's. Preference will be
given to those individuals certified as an ACSM Exercise Specialist, Registered
Clinical Exercise Physiologist, or Licensed in Louisiana as an Exercise
Physiologist. Interested applicants should be motivated and able to work with
minimum supervision. Experimental design and planning, as well as accurate
recording of data are desired.
And now for something almost completely different. One of my PhDs, Tom
Vandenbogaerde, and I are doing a meta-analysis on effects of carbohydrate
on performance. In one of the studies (Murray et al., 1991) the effects are
for time-trial time on a Velodyne trainer. We've tried unsuccessfully to
find a data file on the Web from any testing with this erg that would allow
us to translate effects on time-trial time into effects on mean power. All
we need is a few observations on any one individual for speed and power. We
can do the rest, which is simply to plot logs of both and get the slope
therefrom, which is the factor we need. Can anyone help? Or does anyone
know the factor or have a reference to it?
Will (and Tom)
I want to correct any misconceptions that Sam Callum might have or might
engender in others about constant-power tests to exhaustion. It is often
claimed that these tests are nothing like real events, but nothing could be
further from the truth. If you want to do a personal-best endurance time,
you do it at close to constant pace, and you reach maximum effort as you
complete the distance. That's exactly what happens in a time-to-exhaustion
test. Now, I grant you that the distance you complete in a
time-to-exhaustion test is never going to be exactly the distance of a real
time trial, but that doesn't matter, provided it takes approximately the
time of the time trial.
Erica Hinckson and I marshaled this and other arguments in favor of
time-to-exhaustion tests in our MSSE paper and in the letters to the editor
that followed it (see below). Of course we recognized the limitations, the
worst of which is finding the intensity that produces something like the
target time to exhaustion for each subject. But that isn't so bad if you
are going to do a series of times to exhaustion of increasing duration, and
you will indeed want to do a series of tests, even if they are time trials
over the same distance. To be confident about trivial or small effects on
athletic performance, you absolutely have to do more than one test after
each treatment in a crossover or before and after each treatment in a
parallel-groups controlled trial, then average the outcomes. Either that,
or test hundreds of subjects. One way or another you have to do something
approaching 50-100 tests all up in a crossover, or four times as many in a
parallel-groups trial, if your treatment effect is actually trivial and you
want to be sure about saying it is. So, if you do a series of times to
exhaustion of increasing duration, you get the extra precision arising from
combining the tests for the estimate of performance in the middle of the
range of performance times, plus you get some indication of the effect of
the treatment over a range of durations (although the precision for the
shortest and longest durations won't be as good as for the mid duration).
Finally, please note that most sport scientists are happy with the notion
that an incremental to exhaustion is a contender for the single best test of
athletic performance, yet there is no event anything like an incremental
test. The peak speed or power in the test correlates highly with time-trial
time, and it has one of the smallest errors of measurement. Most
importantly, the athlete doesn't have to guess the pace that she or he
thinks he can sustain optimally. The same applies to time to exhaustion,
and that test is a lot closer to real events.
Hopkins WG, Hinckson EA (2005). Should time trial performance be predicted
from several serial time-to-exhaustion tests?--Response. Medicine and
Science in Sports and Exercise 37, 1821
Hopkins WG, Hinckson EA (2005). Mathematical constants that vary? --
Response. Medicine and Science in Sports and Exercise 37, 1823
At the risk of a reprimand from the publisher for violating the copyright
they winkled out of me, I have reproduced these two letters below.
Will
Should Time Trial Performance Be Predicted from Several Serial
Time-to-Exhaustion Tests?--Response
Our response is a plausible conversation between two sport scientists at a
future ACSM meeting.
Kim: Hey, I hear you've switched to times to exhaustion with your endurance
athletes. How come? Jeukendrup and Currell reckon those tests are
unrealistic and unreliable (4).
Kylie: Yeah, we used to do time trials, but we suspected the athletes were
just remembering their usual race pace, or even something more comfortable,
from trial to trial. After all, they usually pick up the pace towards the
end of a time trial (e.g., 6), so they could have gone faster earlier.
Kim: That change of pace in time trials is a worry. A more even pace may
be optimal for longer endurance (1). So athletes don't usually do their
best in time trials?
Kylie: Exactly! And it's probably worse when you do something that changes
their ability to produce power. How well do athletes set their pace early
in a time trial to suit their new state? Who knows? With constant-power
and incremental tests to maximum effort, athletes don't have to set the
right pace-they just have to keep going as long as possible.
Kim: But isn't winning races all about pacing?
Kylie: Pacing can be important, and we'll use time trials when we want to
study self-selected pacing. But usually an athlete tries to hang in with the
front runners. Either way, the more power the athlete can sustain, the
better-and that's why just about everything we try with athletes is aimed at
increasing power output. So when we test athletes, we want to measure their
change in power output accurately. Allowing athletes to pace themselves
adds noise. It also makes enhancements and impairments of maximum
sustainable power look smaller than they really are, but that's another
story.
Kim: How many times to exhaustion? Jeukendrup and Currell said there was
no point in doing several when one time trial will do.
Kylie: Well, you need two to get around the problem of individual
differences in the power-duration curve, and we're checking that two work
properly with log-log modeling for longer tests, as Hinckson and Hopkins
suggested (2). But we used to do two time trials anyway, because we wanted
to track endurance capability over short and long durations. What's better
for that: two time trials or two times to exhaustion?
Kim: Time trials, surely, because times to exhaustion are unreliable?
Kylie: Look, Hopkins and colleagues (3) had already shown that times to
exhaustion are reliable over everything from minutes to hours. Hinckson and
Hopkins put it on a solid theoretical and experimental footing with tests
lasting 1 to 10 minutes. Jeukendrup and Currell's failure to recognize that
was disappointing. They could have written something like this: "We admit
Jeukendrup and colleagues (5) were wrong in 1996. Hinckson and Hopkins have
explained clearly how it's all a matter of signal to noise arising from the
shape of the power-duration curve. And their use of calculus with modeling
shows a commendable level of scholarship. However."
Will G. Hopkins, PhD
Erica A. Hinckson, PhD
Division of Sport and Recreation
Auckland University of Technology
Auckland, NZ
1. Foster, C., M. Schrager, A. C. Snyder, and N. N. Thompson. Pacing
strategy and athletic performance. Sports Med. 17:77-85, 1994.
2. Hinckson, E. A. and W. G. Hopkins. Reliability of time to exhaustion
analyzed with critical-power and log-log modeling. Med. Sci. Sports Exerc.
37:696-701, 2005.
3. Hopkins, W. G., E. J. Schabort, and J. A. Hawley. Reliability of
power in physical performance tests. Sports Med. 31:211-234, 2001.
4. Jeukendrup, A. E. and K. Currell. Should time trial performance be
predicted from several serial time-to-exhaustion tests? Med. Sci. Sports
Exerc. 37:000-000, 2005.
5. Jeukendrup, A. E., W. H. Saris, F. Brouns, and A. D. Kester. A new
validated endurance performance test. Med. Sci. Sports Exerc. 28:266-270,
1996.
6. Schabort, E. J., W. G. Hopkins, and J. A. Hawley. Reproducibility of
self-paced treadmill performance of trained endurance runners. Int. J.
Sports Med. 19:48-51, 1998.
Mathematical Constants That Vary?-Response
"Constants that vary" (1) elegantly summarizes the fact that parameters in
any fixed-effects model are constants only in the sense of representing
values of population means, because values of the parameters for individuals
always vary from the mean. We ourselves pointed out how the mean value for
a factor converting changes in time to exhaustion into changes in time-trial
time provides only an approximation for individuals, and we explained how to
use several times to exhaustion for more precise conversion (2). The
approximation is not as bad as Atkinson and Nevill think. Consider a study
in which a single time to exhaustion is used pre and post a treatment, and
assume that the underlying mean change in power output is typical for
interventions aimed at athletic performance, say 2.0%. The apparently large
between-subject variation of 28% in the conversion factor produces an error
of typically only 0.5% in an individual's 2.0% change. This error is small
compared with the standard error of measurement of power output in time
trials, which is ~2-3% (4); it may also be negligible compared with the
variation arising from individual responses to the treatment. This insight
helps explain why interventions producing small changes in power output have
been studied successfully with times to exhaustion.
Atkinson and Nevill requested analysis of reliability of time-trial times
predicted from times to exhaustion "using estimates of model parameters
specific to a particular subject at a specific time". We reported such
predictions and analyses in Figure 1 and Table 3 of our paper. The
outcome-low within-runner variability-was our empirical evidence that times
to exhaustion are inherently reliable.
Atkinson and Nevill's concerns about pacing are addressed partly in our
reply (3) to Jeukendrup and Currell (5). Their suggestion that boredom
contributes to the large within-subject variability in time to exhaustion
echoes that in a paper coauthored by one of us in 1998 (6). We now know
that the variability is due mainly to the shape of the power-duration curve,
but the extent to which boredom contributes for anyone making near-maximal
effort in any kind of long endurance test is unclear. For this and other
reasons, the best endurance test for elite athletes is still not known.
Atkinson and Nevill's suggestion that measurement of physiological variables
at set times could give clues to subjects about elapsed time in
time-to-exhaustion tests is insightful, and measurement protocols need to be
devised to avoid this potential problem.
As with Jeukendrup and Currell, we are disappointed with Atkinson and
Nevill's failure to recognize our achievements. The casual reader of these
two letters and of our paper-like the authors of the letters themselves-may
not appreciate that, amongst much else, we have derived factors that allow a
quick and reasonably accurate conversion of a percent change in a time to
exhaustion into a practical percent change in time-trial time. These
factors, and those for longer tests (4), are particularly useful for
interpreting outcomes in published studies where time to exhaustion is the
outcome measure.
Will G. Hopkins, PhD
Erica A. Hinckson, PhD
Division of Sport and Recreation
Auckland University of Technology
Auckland, NZ
1. Atkinson, G. and A. Nevill. Mathematical constants that vary? Med.
Sci. Sports Exerc. 37:000-000, 2005.
2. Hinckson, E. A. and W. G. Hopkins. Reliability of time to exhaustion
analyzed with critical-power and log-log modeling. Med. Sci. Sports Exerc.
37:696-701, 2005.
3. Hopkins, W. G. and E. A. Hinckson. Should time trial performance be
predicted from several serial time-to-exhaustion tests?--Response. Med. Sci.
Sports Exerc. 37:000-000, 2005.
4. Hopkins, W. G., E. J. Schabort, and J. A. Hawley. Reliability of
power in physical performance tests. Sports Med. 31:211-234, 2001.
5. Jeukendrup, A. E. and K. Currell. Should time trial performance be
predicted from several serial time-to-exhaustion tests? Med. Sci. Sports
Exerc. 37:000-000, 2005.
6. Schabort, E. J., W. G. Hopkins, and J. A. Hawley. Reproducibility of
self-paced treadmill performance of trained endurance runners. Int. J.
Sports Med. 19:48-51, 1998.
Dear all,
I would like to bring the following to your attention.
The School of Sport and Exercise Sciences in the College of Life and
Environmental Sciences at University of Birmingham (UK) currently has 9 School
funded and 5 BBSRC funded PhD Scholarships open to applicants from the European
Union (EU; due to fee funding constraints), and a further 25 bursaries available
to applicants from outside of the EU.
The School is one of the leading research departments in the UK, as reflected by
the recent Research Assessment Exercise that rated 60% of the research activity
of world-leading standard. As part of the School's commitment to research
excellence, it is offering these awards for three years. The starting date is
aimed at October 2009, although programmes of study commencing at a later date
will be considered in exceptional circumstances. We require that applicants have
a good Honours degree (at least 2.1 or equivalent) and an English qualification
(e.g., GCSE, IELTS etc.).
Details of these funds are presented on our website:
http://www.sportex.bham.ac.uk/postgrad/prospective/studentships.shtml
General enquiries should be directed to Dr. Martin Edwards, Postgraduate
Admissions Tutor (M.Edwards.1@...) or to Val Queeley, Admissions
Secretary (tel: 0121 414 4115).
Many thanks for reading this posting.
Yours Sincerely
Martin Edwards
My main point of discussion is "If I administer the 20 or 30 km cycling performance time in the climatic chamber on a stationery cycle trainer, instead of taking the performance test on the road, will it be valid?"
Regarding
the discussion on the best cycling performance test, in addition to (lab vs.
real race) validity and test reliability issues raised by Will Hopkins, you must
seriously consider how your intervention is supposed to enhance performance. For
example, sports drinks are taken for two main reasons 1) to offset the effects
of dehydration on cardiovascular function, and 2) to supplement carbohydrate
supply and availability to the contracting muscle and maybe the nervous system.
In sorter high-intensity tests, the benefits are more likely cardiovascular
(though I’m not discounting glucose effects), so a test that maximally
stresses and measures cardiovascular function is probably the most valid test –
for example incremental to exhaustion following a sufficient preload to stress
the physiology system.
In tests where the
supplement is thought to aid fuel supply (glycogen), you may want wish to
choose that stresses this aspect of physiology, e.g. submaximal time to
exhaustion, or a time trial of sufficient length (e.g. 100 km plus), which
could have intermediary sprints (e.g. Schabort EJ, Hawley JA, Hopkins WG, Mujika I,
and Noakes TD.
A new reliable laboratory test of endurance performance for road cyclists. Med
Sci Sports Exerc 30: 1744-1750, 1998.).
If the supplement is aimed at improving
recovery, then the question should be asked “recovery of what?”,
and then an appropriate test chosen the directly stressors the system or recovery
process under question.