Excess of post-resistance exercise energy expenditure: a comparison between morning and evening
Nan An, Daiki Watanabe, Motohiko Miyachi · 2026
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Description
An, Watanabe, and Miyachi ask whether lifting weights in the morning burns more afterwards than lifting in the evening, a question of the afterburn effect, where energy expenditure stays elevated above rest. Thirteen trained men completed the same six-exercise session at both times of day in their 2026 crossover study. The team measured gas exchange for two hours afterwards. They then repeated the analysis after modelling out the body's daily circadian rhythm in resting metabolism.
Without adjustment, the morning session won: post-exercise energy use and the calculated afterburn both ran higher than after the evening session. The catch is the rhythm. Once the normal daily swing in resting metabolism was accounted for, the morning advantage shrank and lost statistical significance in the corrected comparison. The authors conclude the timing effect is the circadian system itself, not a bonus from morning training.
Catalog record
| CREATOR | Nan An, Daiki Watanabe, Motohiko Miyachi |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 45 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |