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


Thornton, HR and Duthie, GM and Pitchford, NW and Dalaney, JA and Benton, DT and Dascombe, BJ, Effects of a 2-week high-intensity training camp on sleep activity of professional rugby league athletes, International journal of sports physiology and performance, 12, (7) pp. 928-933. ISSN 1555-0265 (2017) [Refereed Article]

Copyright Statement

Copyright 2017 Human Kinetics, Inc.

DOI: doi:10.1123/ijspp.2016-0414


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), sleep efficiency (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 sleep were 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. Those who 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 Details

Item Type:Refereed Article
Keywords:preseason, napping, travel, team sports, recovery
Research Division:Health Sciences
Research Group:Sports science and exercise
Research Field:Exercise physiology
Objective Division:Health
Objective Group:Specific population health (excl. Indigenous health)
Objective Field:Specific population health (excl. Indigenous health) not elsewhere classified
UTAS Author:Pitchford, NW (Dr Nathan Pitchford)
ID Code:132232
Year Published:2017
Web of Science® Times Cited:33
Deposited By:Health Sciences
Deposited On:2019-04-30
Last Modified:2019-08-22

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