Night games and sleep: Physiological, neuroendocrine, and psychometric mechanisms

Journal article


Juliff, Laura E., Peiffer, Jeremiah John and Halson, Shona L.. (2018). Night games and sleep: Physiological, neuroendocrine, and psychometric mechanisms. International Journal of Sports Physiology and Performance. 13(7), pp. 867 - 873. https://doi.org/10.1123/ijspp.2016-0809
AuthorsJuliff, Laura E., Peiffer, Jeremiah John and Halson, Shona L.
Abstract

Context: Night games are a regular occurrence for team-sport athletes, yet sleep complaints following night competitions are common. The mechanisms responsible for reported sleep difficulty in athletes are not understood. Methods: An observational crossover design investigating a night netball game and a time-matched rest day in 12 netball athletes was conducted to ascertain differences in physiological (core temperature), psychometric (state and trait), and neuroendocrine (adrenaline, noradrenaline, and cortisol) responses. Results: Following the night game, athletes experienced reduced sleep durations, lower sleep efficiency, early awakenings, and poorer subjective sleep ratings compared with the rest day. No differences were found between core temperature, state psychometric measures, and cortisol at bedtime. Adrenaline and noradrenaline concentrations were elevated compared with the time-matched rest day prior to (26.92 [15.88] vs 12.90 [5.71] and 232.6 [148.1] vs 97.83 [36.43] nmol/L, respectively) and following the night game (18.67 [13.26] vs 11.92 [4.56] and 234.1 [137.2] vs 88.58 [54.08] nmol/L, respectively); however, the concentrations did not correlate to the sleep variables (duration, efficiency, and sleep-onset latency). A correlation (rs = −.611) between sleep efficiency and hyperarousal (trait psychometric measure) was found. Conclusions: Athletes experienced poor sleep following a night game. Furthermore, results suggest that athletes who have a tendency toward a high trait arousal may be more susceptible to sleep complaints following a night game. These data expand knowledge and refute frequently hypothesized explanations for poor sleep following night competition. The results may also help support staff and coaches target strategies for individual athletes at a higher risk of sleep complaints.

Keywordscompetition; netball; athletes; team sport; recovery
Year2018
JournalInternational Journal of Sports Physiology and Performance
Journal citation13 (7), pp. 867 - 873
PublisherHuman Kinetics, Inc.
ISSN1555-0265
Digital Object Identifier (DOI)https://doi.org/10.1123/ijspp.2016-0809
Scopus EID2-s2.0-85052402492
Page range867 - 873
Research GroupSports Performance, Recovery, Injury and New Technologies (SPRINT) Research Centre
Publisher's version
File Access Level
Controlled
Place of publicationUnited States of America
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