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  • Title: Do players and staff sleep more during the pre- or competitive season of elite rugby league?
    Author: Caia J, Scott TJ, Halson SL, Kelly VG.
    Journal: Eur J Sport Sci; 2017 Sep; 17(8):964-972. PubMed ID: 28585467.
    Abstract:
    This study establishes the sleep behaviour of players and staff during the pre- and competitive seasons of elite rugby league. For seven days during both the pre- and competitive seasons, seven rugby league players and nine full-time staff from one professional Australian rugby league club had their sleep monitored via wrist actigraphy and self-report sleep diaries. Two-way repeated measures analysis of variance determined differences between the pre- and competitive season in players and staff, with effect sizes (ES) used to interpret the practical magnitude of differences. Findings show an earlier bed time and wake time for players (-34 min, ES = 1.5; ±0.5 and -39 min, 2.1; ±0.5 respectively) and staff (-29 min, ES = 0.8; ±0.3 and -35 min, ES = 1.7; ±0.4 respectively) during pre-season when compared to the competitive season. Despite this, no differences were seen when considering the amount of time in bed, sleep duration or sleep efficiency obtained between the pre- and competitive seasons. Our results suggest that early morning training sessions scheduled during pre-season advances wake time in elite rugby league. However, both players and staff can aim to avoid reductions in sleep duration and sleep efficiency with subsequent adjustment of night time sleep patterns. This may be particularly pertinent for staff, who wake earlier than players during both the pre- and competitive seasons.
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