@article{ref1,
title="General health complaints and sleep associated with new injury within an endurance sporting population: a prospective study",
journal="Journal of science and medicine in sport",
year="2019",
author="Johnston, R. and Cahalan, R. and Bonnett, L. and Maguire, M. and Glasgow, P. and Madigan, S. and O'Sullivan, K. and Comyns, T.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="OBJECTIVES: To examine the association between subjective health complaints, sleep quantity and new injury within an endurance sport population. <br><br>DESIGN: Prospective cohort study. <br><br>METHODS: Ninety-five endurance sporting participants were recruited from running, triathlon, swimming, cycling and rowing disciplines. Over 52-week period participants submitted weekly data regarding subjective health complaints (SHCs) (cardiorespiratory, gastrointestinal and psychological/lifestyle), sleep quantity, training load and new injury episodes. Applying a 7- and 14-day lag period, a shared frailty model was used to explore new injury risk associations with total SHCs and sleep quantity. <br><br>RESULTS: 92.6% of 95 participants completed all 52 weeks of data submission and the remainder of the participants completed ≥30 weeks. Seven-day lag psychological/lifestyle SHCs were significantly associated with new injury risk (Hazard ratio (HR)=1.32; CI 95%=1.01-1.72, p<0.04). In contrast, cardiorespiratory (HR=1.15; CI 95%=0.99-1.36, p=0.07) and gastrointestinal (HR=0.77; CI 95%=0.56-1.05, p=0.09) SHCs were not significantly associated with new injury risk. New injury risk had a significant increased association with 14-day lag <7h/day sleep quantity (HR=1.51; CI 95%=2.02-1.13, p<0.01) and a significant decreased association with >7h/day sleep quantity (HR=0.63, CI 95%=0.45-0.87, p<0.01. A secondary regression analysis demonstrated no significant association with total SHCs and training load factors (Relative Risk (RR)=0.08, CI 95%=0.04-0.21, p=0.20). <br><br>CONCLUSIONS: To minimise an increased risk of new injuries within an endurance sporting population, this study demonstrates that psychological/lifestyle subjective health complaints and sleep quantity should be considered. The study also highlights a lag period between low sleep quantity and its subsequent impact on new injury risk. No association was demonstrated between subjective health complaints, sleep quantity and training load factors.<br><br>Copyright © 2019 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.<p /> <p>Language: en</p>",
language="en",
issn="1440-2440",
doi="10.1016/j.jsams.2019.10.013",
url="http://dx.doi.org/10.1016/j.jsams.2019.10.013"
}