Diurnal repeated exercise promotes slow-wave activity and fast-sigma power during sleep with increase in body temperature: a human crossover trial.

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Summary of "Diurnal repeated exercise promotes slow-wave activity and fast-sigma power during sleep with increase in body temperature: a human crossover trial."

The effects of exercise on sleep have been explored from various perspectives, but little is known about how the effects of acute exercise on sleep are produced through physiological functions.We used a protocol of multiple daytime sessions of moderate-intensity aerobic exerciseand examined the subsequenteffects on sleep structure, core body temperature, distal-proximal skin temperature gradient, and subjective parameters. Fourteen healthy men who did not exercise regularly were evaluated under the baseline (no exercise) and exercise conditions on a within-subject crossover basis. Under the exercise condition, each participant performed a 40-min aerobic workout at 40% of maximal oxygen intakefour times between morning and early evening. We observed a 33% increase in slow-wave sleep (=0.005), as well as increases in slow-wave activity (=0.026), the fast-sigma power/slow-wave activity ratio (=0.005), and subjective sleep depth and restorativeness the following morning. Moreover, both core body temperature and the distal-proximal skin temperature gradient increased during sleep after exercise (=0.021 and =0.047, respectively). Regression analysis identified increased nocturnal distal-proximal skin temperature gradient during sleep after exercise as a factor in the increase in slow-wave activity. The fast-sigma/ slow-wave activity ratio correlated with core body temperature. Performing acute exercise promotes slow-wave sleep with nocturnal elevation in the distal-proximal skin temperature gradient. Both core body temperature and fast-sigma power may play a role in the specific physiological status of the body after exercise.


Journal Details

This article was published in the following journal.

Name: Journal of applied physiology (Bethesda, Md. : 1985)
ISSN: 1522-1601


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