Evening high-intensity interval exercise does not disrupt sleep or alter energy intake despite changes in acylated ghrelin in middle-aged men

Experimental Physiology
Penelope S LarsenMelissa Skein

Abstract

What is the central question of this study? What are the interactions between sleep and appetite following early evening high-intensity interval exercise (HIIE)? What is the main finding and its importance? HIIE can be performed in the early evening without subsequent sleep disruptions and may favourably alter appetite-related hormone concentrations. Nonetheless, perceived appetite and energy intake do not change with acute HIIE regardless of time of day. Despite exercise benefits for sleep and appetite, due to increased time restraints, many adults remain inactive. Methods to improve exercise compliance include preferential time-of-day or engaging in short-duration, high-intensity interval exercise (HIIE). Hence, this study aimed to compare effects of HIIE time-of-day on sleep and appetite. Eleven inactive men undertook sleep monitoring to determine baseline (BASE) sleep stages and exclude sleep disorders. On separate days, participants completed 30 min HIIE (60 s work at 100% V ̇ O 2 peak , 240 s rest at 50% V ̇ O 2 peak ) in (1) the morning (MORN; 06.00-07.00 h), (2) the afternoon (AFT; 14.00-16.00 h) and (3) the early evening (EVEN: 19.00-20.00 h). Measures included appetite-related hormones (acylated gh...Continue Reading

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Citations

Jul 14, 2020·Exercise and Sport Sciences Reviews·Leah M SchumacherDale S Bond
Dec 10, 2019·European Journal of Applied Physiology·Craig ThomasJulien Louis
May 26, 2021·International Journal of Sports Medicine·Jennifer M BlankenshipSeth A Creasy
Aug 14, 2021·Health Psychology Review·Allison C VerondaLeah A Irish

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