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Effects of a 2-week high-intensity training camp on sleep activity of professional rugby league athletes

Thornton, HR, Duthie, GM, Pitchford, NW ORCID: 0000-0003-3169-9347, Dalaney, JA, Benton, DT and Dascombe, BJ 2017 , 'Effects of a 2-week high-intensity training camp on sleep activity of professional rugby league athletes' , International journal of sports physiology and performance, vol. 12, no. 7 , pp. 928-933 , doi: 10.1123/ijspp.2016-0414.

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Purpose: To investigate the effects of a training camp on the sleep characteristics of professional rugby league players compared with a home period. Methods: During a 7-d home and 13-d camp period, time in bed (TIB), total sleep time (TST), sleepefficiency (SE), and wake after sleep onset were measured using wristwatch actigraphy. Subjective wellness and training loads(TL) were also collected. Differences in sleep and TL between the 2 periods and the effect of daytime naps on nighttime sleepwere examined using linear mixed models. Pearson correlations assessed the relationship of changes in TL on individuals’ TST.Results: During the training camp, TST (–85 min), TIB (–53 min), and SE (–8%) were reduced compared with home. Thosewho undertook daytime naps showed increased TIB (+33 min), TST (+30 min), and SE (+0.9%). Increases in daily total distance and training duration above individual baseline means during the training camp shared moderate (r = –.31) and trivial (r= –.04) negative relationships with TST. Conclusions: Sleep quality and quantity may be compromised during training camps;however, daytime naps may be beneficial for athletes due to their known benefits, without being detrimental to nighttime sleep.

Item Type: Article
Authors/Creators:Thornton, HR and Duthie, GM and Pitchford, NW and Dalaney, JA and Benton, DT and Dascombe, BJ
Keywords: preseason, napping, travel, team sports, recovery
Journal or Publication Title: International journal of sports physiology and performance
Publisher: Human Kinetics
ISSN: 1555-0265
DOI / ID Number: 10.1123/ijspp.2016-0414
Copyright Information:

Copyright 2017 Human Kinetics, Inc.

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