No effects of different modalities of a single bout of exercise on sleep architecture and appetite in healthy overweight or obese young adults

Mnguni, Nkazimulo; Roche, Johanna; Dafkin, Chloe; Scheuermaier, Karine

doi:10.1016/j.physbeh.2023.114222

Cited by 1 publication

(1 citation statement)

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“…To our knowledge, there is a lack of information to support the latter. In particular, most previous studies have failed to highlight the deleterious effects of evening exercise on sleep ( Myllymäki et al, 2011 ; Flausino et al, 2012 ; Buman et al, 2014 ; Kredlow et al, 2015 ; Mnguni et al, 2023 ). A recent review coupled to a meta-analysis has analyzed results from almost 30 studies respectively with the aim to compare the effects of different intensities of acute evening exercise on sleep in healthy adults.…”

Section: Introductionmentioning

confidence: 99%

Effects of acute bouts of evening resistance or endurance exercises on sleep EEG and salivary cortisol

Perrier,

Langeard,

Ouma

et al. 2024

Front. Physiol.

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Introduction: Deleterious effects of exercise close to bedtime could be due to increased physiological arousal that can be detected during sleep using sleep spectral analysis. Resistance and endurance exercises have different effects on cortisol release that may lead them to impact sleep spectral signatures differently. The present study aimed to investigate the effects of two types of evening exercise on sleep architecture, sleep spectral parameters and salivary cortisol.Methods: Young healthy participants came to our laboratory to undergo 3 counterbalanced pre-sleep conditions that started 1 h before bedtime (a resistance and an endurance exercise conditions of 30 min duration, identical in terms of workload; and a control condition) followed by polysomnographic recordings. Results were compared between the three conditions for 16 participants.Results: Sleep efficiency was lower after both endurance and resistance exercise than after the control condition. Total sleep time was lower after endurance exercise compared to the control condition. Sleep spectral analyses showed that both endurance and resistance exercises led to greater alpha power during N1 sleep stage and greater theta power during N2 sleep stage compared to the control condition. The endurance exercise led to greater beta power during N2 sleep stage, greater alpha power during REM sleep, and higher cortisol levels compared to the control condition (trend), and compared to the resistance exercise condition (significant). The resistance exercise led to lower beta power during N2 sleep stage than the control condition and lower cortisol levels than the endurance exercise condition.Discussion: This study underlines significant modifications of sleep quality and quantity after both moderate evening endurance and resistance exercises. Still, these effects cannot be considered as deleterious. In contrast to the resistance exercise, endurance exercise led to an increase in sleep EEG activity associated with hyperarousal during sleep and higher cortisol levels, suggesting an hyperarousal effect of endurance exercise performed in the evening. These results align with previous warning about the arousal effects of evening exercise but do not support the notion of deleterious effects on sleep. While these results provide support for the physiological effects of evening exercises on sleep, replication with larger sample size is needed.

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