Sleep quality but not quantity altered with a change in training environment in elite Australian rules football players

Pitchford, NW; Robertson, SJ; Sargent, C; Cordy, J; Bishop, DJ; Bartlett, JD

Sleep quality but not quantity altered with a change in training environment in elite Australian rules football players

Pitchford, NW Robertson, SJ Sargent, C Cordy, J Bishop, DJ Bartlett, JD

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Publication Type:: Journal Article
Citation:: International Journal of Sports Physiology and Performance, 2017, 12 (1), pp. 75 - 80
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Pitchford, NW	en_US
dc.contributor.author	Robertson, SJ	en_US
dc.contributor.author	Sargent, C	en_US
dc.contributor.author	Cordy, J	en_US
dc.contributor.author	Bishop, DJ	en_US
dc.contributor.author	Bartlett, JD	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	International Journal of Sports Physiology and Performance, 2017, 12 (1), pp. 75 - 80	en_US
dc.identifier.issn	1555-0265	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125799
dc.description.abstract	© 2017 Human Kinetics, Inc. Purpose: To assess the effects of a change in training environment on the sleep characteristics of elite Australian Rules football (AF) players. Methods: In an observational crossover trial, 19 elite AF players had time in bed (TIB), total sleep time (TST), sleep efficiency (SE), and wake after sleep onset (WASO) assessed using wristwatch activity devices and subjective sleep diaries across 8-d home and camp periods. Repeated-measures ANOVA determined mean differences in sleep, training load (session rating of perceived exertion [RPE]), and environment. Pearson product-moment correlations, controlling for repeated observations on individuals, were used to assess the relationship between changes in sleep characteristics at home and camp. Cohen effect sizes (d) were calculated using individual means. Results: On camp TIB (+34 min) and WASO (+26 min) increased compared with home. However, TST was similar between home and camp, significantly reducing camp SE (-5.82%). Individually, there were strong negative correlations for TIB and WASO (r = -.75 and r = -.72, respectively) and a moderate negative correlation for SE (r = -.46) between home and relative changes on camp. Camp increased the relationship between individual s-RPE variation and TST variation compared with home (increased load r = -.367 vs .051, reduced load r = .319 vs -.033, camp vs home respectively). Conclusions: Camp compromised sleep quality due to significantly increased TIB without increased TST. Individually, AF players with higher home SE experienced greater reductions in SE on camp. Together, this emphasizes the importance of individualized interventions for elite team-sport athletes when traveling and/or changing environments.	en_US
dc.relation.ispartof	International Journal of Sports Physiology and Performance	en_US
dc.relation.isbasedon	10.1123/ijspp.2016-0009	en_US
dc.subject.classification	Sport Sciences	en_US
dc.subject.mesh	Humans	en_US
dc.subject.mesh	Cross-Over Studies	en_US
dc.subject.mesh	Perception	en_US
dc.subject.mesh	Sleep	en_US
dc.subject.mesh	Environment	en_US
dc.subject.mesh	Time Factors	en_US
dc.subject.mesh	Soccer	en_US
dc.subject.mesh	Travel	en_US
dc.subject.mesh	Australia	en_US
dc.subject.mesh	Male	en_US
dc.subject.mesh	Physical Exertion	en_US
dc.subject.mesh	Young Adult	en_US
dc.subject.mesh	Physical Conditioning, Human	en_US
dc.title	Sleep quality but not quantity altered with a change in training environment in elite Australian rules football players	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	12	en_US
utslib.for	1106 Human Movement and Sports Sciences	en_US
utslib.for	1116 Medical Physiology	en_US
utslib.for	1701 Psychology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Health
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.issue	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	12	en_US

Abstract:

© 2017 Human Kinetics, Inc. Purpose: To assess the effects of a change in training environment on the sleep characteristics of elite Australian Rules football (AF) players. Methods: In an observational crossover trial, 19 elite AF players had time in bed (TIB), total sleep time (TST), sleep efficiency (SE), and wake after sleep onset (WASO) assessed using wristwatch activity devices and subjective sleep diaries across 8-d home and camp periods. Repeated-measures ANOVA determined mean differences in sleep, training load (session rating of perceived exertion [RPE]), and environment. Pearson product-moment correlations, controlling for repeated observations on individuals, were used to assess the relationship between changes in sleep characteristics at home and camp. Cohen effect sizes (d) were calculated using individual means. Results: On camp TIB (+34 min) and WASO (+26 min) increased compared with home. However, TST was similar between home and camp, significantly reducing camp SE (-5.82%). Individually, there were strong negative correlations for TIB and WASO (r = -.75 and r = -.72, respectively) and a moderate negative correlation for SE (r = -.46) between home and relative changes on camp. Camp increased the relationship between individual s-RPE variation and TST variation compared with home (increased load r = -.367 vs .051, reduced load r = .319 vs -.033, camp vs home respectively). Conclusions: Camp compromised sleep quality due to significantly increased TIB without increased TST. Individually, AF players with higher home SE experienced greater reductions in SE on camp. Together, this emphasizes the importance of individualized interventions for elite team-sport athletes when traveling and/or changing environments.

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http://hdl.handle.net/10453/125799