medicine & performance Issue 27 Winter 2018/19
The official magazine of the Football Medicine & Performance Association
Feature
Testing & Training
output across an 8-week training cycle amongst elite level soccer players
In this issue The Effect of Sleep Nutritionists in Academy Football Life After Football Gilmore’s Groin
Legal Education Recruitment Wellbeing
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CONTENTS WELCOME
7
Updates
FEATURES
9
Research & Development
22
FMPA Conference and Awards
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The effect of sleep on high speed running during a weekly micro-cycle in elite female soccer players Wiseman, A Stebbings, G.K
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Gilmore’s Groin Revisited Simon Marsh Rachel Rolph
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Neurogenic hamstring and calf pain in football When is a tear not a tear? Dr Simon Petrides
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The association between physical testing and training output across an 8-week training cycle amongst elite level soccer players Adam L. Owen Leo Djaoui Bruno Mendes Shane Malone Osman Ates
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FMPA Register
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14
The temporal pattern of recovery in eccentric hamstring strength postsoccer specific fatigue David Rhodes Lars McNaughton Matt Greig
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Life After Football – Simon Maltby
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ABOUT
The Officiating Team Modern care of football referees Carlo Castagna Mario Rizzini
Nutritionists in Academy football: A recipe for success? Mark Russell
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Contributors Wiseman.A, Stebbings.G.K, Mark Russell, Simon Marsh, Rachel Rolph, Dr Simon Petrides, Adam L. Owen, Leo Djaoui, Bruno Mendes, Shane Malone, Osman Ates, Carlo Castagna, Mario Rizzini, David Rhodes, Lars McNaughton, Matt Greig
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feature
football medicine & performance
THE EFFECT OF SLEEP ON HIGH SPEED RUNNING DURING A WEEKLY MICRO-CYCLE IN ELITE FEMALE SOCCER PLAYERS FEATURE / WISEMAN, A. & STEBBINGS, G.K – MANCHESTER METROPOLITAN UNIVERSITY, UK
T
he potential benefits of adequate sleep for increased recovery and performance in elite sport have been widely documented, however the effect of sleep on soccer match performance has been less reported, especially within female soccer. The aim of this study was to investigate the effect of sleep quality and quantity on match day high speed running (HSR) in elite female soccer players. Data were collected over three training weeks, with each week comprising of four training sessions and an official Scottish Women’s Premier League match during the 2017 soccer season. Ethical approval was obtained from Manchester Metropolitan University. Each participant (n=4; 21±2.7 years; 169±75.9 cm; 63.1±6.54 kg) provided written informed consent to take part in the study.
During the three week data collection period, subjective wellness questionnaires were administered to each player post-training and match (equating to 4-5 collection points each week), via smartphone application. Questionnaires captured self-reports of sleep quantity (hrs) and sleep quality (5 point Likert scale), which were summed for each week and a mean calculated. Furthermore, participants were issued with 10Hz global positioning system (GPS) equipment on match days to measure HSR distance (m). Mean sleep quantity; quality and HSR during the data collection period were 37.3±4.6hrs, 10.3±3.3 and 479.6±231.8 m, respectively. Pearson’s correlation coefficient analysis revealed no significant relationship between sleep quantity and HSR (r=-0.48, P= 0.88) or sleep quality and HSR (r= -0.216, P= 0.50).
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There does not appear to be a relationship between sleep time and quality during training weeks and the amount of HSR completed during a subsequent match-day. Considering muscle repair and restoration of immune function occur with the increased growth hormone and testosterone, and reduced cortisol release during sleep, a relationship between sleep time and quality and HSR was expected. While the lack of association observed may be due to the small sample size, the results of this study may still allow practitioners to make individual recommendations to improve sleep quality and quantity with both recovery and match performance benefits. Furthermore, it remains to be seen whether increasing sleep quality and/or quantity during training weeks, beyond that observed here, could contribute to an increase in quantity of match-day HSR
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