Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men
Abstract The timing of exercise plays an important role in the effect of the exercise on physiological functions, such as substrate oxidation and circadian rhythm. Exercise exerts different effects on the glycemic response to exercise and meal intake depending on when the exercise performed. Here, w...
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doaj-13a4ef436caf458ab01d7135344db4012021-04-22T09:32:32ZengWileyPhysiological Reports2051-817X2021-04-0197n/an/a10.14814/phy2.14784Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy menYoshiaki Tanaka0Hitomi Ogata1Insung Park2Akira Ando3Asuka Ishihara4Momoko Kayaba5Katsuhiko Yajima6Chihiro Suzuki7Akihiro Araki8Haruka Osumi9Simeng Zhang10Jaehoon Seol11Keigo Takahashi12Yoshiharu Nabekura13Makoto Satoh14Kumpei Tokuyama15Graduate School of Comprehensive Human Science University of Tsukuba Tsukuba Ibaraki JapanGraduate School of Humanities and Social Sciences Hiroshima University Hiroshima JapanInternational Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Ibaraki JapanGraduate School of Comprehensive Human Science University of Tsukuba Tsukuba Ibaraki JapanInternational Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Ibaraki JapanDepartment of Somnology Tokyo Medical University Shinjuku Tokyo JapanDepartment of Nutritional Physiology Faculty of Pharmaceutical Sciences Josai University Sakado Saitama JapanInternational Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Ibaraki JapanFaculty of Health Science Tsukuba International University Tsuchiura Ibaraki JapanGraduate School of Comprehensive Human Science University of Tsukuba Tsukuba Ibaraki JapanInternational Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Ibaraki JapanR&D Center for Tailor‐Made QOL University of Tsukuba Tsukuba Ibaraki JapanGraduate School of Comprehensive Human Science University of Tsukuba Tsukuba Ibaraki JapanGraduate School of Comprehensive Human Science University of Tsukuba Tsukuba Ibaraki JapanInternational Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Ibaraki JapanInternational Institute for Integrative Sleep Medicine (WPI‐IIIS) University of Tsukuba Tsukuba Ibaraki JapanAbstract The timing of exercise plays an important role in the effect of the exercise on physiological functions, such as substrate oxidation and circadian rhythm. Exercise exerts different effects on the glycemic response to exercise and meal intake depending on when the exercise performed. Here, we comprehensively investigated the effects of the timing (morning or afternoon) of exercise on glucose fluctuation on the basis of several indices: glycemic variability over 24 h (24‐h SD), J‐index, mean amplitude of glucose excursions (MAGE), continuous overall net glycemic action (CONGA), and detrended fluctuation analysis (DFA). Eleven young men participated in 3 trials in a repeated measures design in which they performed a single bout of exercise at 60% of their maximal oxygen uptake for 1 h beginning either at 7:00 (morning exercise), 16:00 (afternoon exercise), or no exercise (control). Glucose levels were measured using a continuous glucose monitoring system (CGMs). Glucose fluctuation was slightly less stable when exercise was performed in the afternoon than in the morning, indicated by higher CONGA at 2 h and α2 in DFA in the afternoon exercise trial than in the control trial. Additionally, decreased stability in glucose fluctuation in the afternoon exercise trial was supported by the descending values of the other glucose fluctuation indices in order from the afternoon exercise, morning exercise, and control trials. Meal tolerance following exercise was decreased after both exercise trials. Glucose levels during exercise were decreased only in the afternoon exercise trial, resulting in less stable glucose fluctuations over 24 h.https://doi.org/10.14814/phy2.14784continuous glucose monitoringexercise timingglucose fluctuation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yoshiaki Tanaka Hitomi Ogata Insung Park Akira Ando Asuka Ishihara Momoko Kayaba Katsuhiko Yajima Chihiro Suzuki Akihiro Araki Haruka Osumi Simeng Zhang Jaehoon Seol Keigo Takahashi Yoshiharu Nabekura Makoto Satoh Kumpei Tokuyama |
spellingShingle |
Yoshiaki Tanaka Hitomi Ogata Insung Park Akira Ando Asuka Ishihara Momoko Kayaba Katsuhiko Yajima Chihiro Suzuki Akihiro Araki Haruka Osumi Simeng Zhang Jaehoon Seol Keigo Takahashi Yoshiharu Nabekura Makoto Satoh Kumpei Tokuyama Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men Physiological Reports continuous glucose monitoring exercise timing glucose fluctuation |
author_facet |
Yoshiaki Tanaka Hitomi Ogata Insung Park Akira Ando Asuka Ishihara Momoko Kayaba Katsuhiko Yajima Chihiro Suzuki Akihiro Araki Haruka Osumi Simeng Zhang Jaehoon Seol Keigo Takahashi Yoshiharu Nabekura Makoto Satoh Kumpei Tokuyama |
author_sort |
Yoshiaki Tanaka |
title |
Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men |
title_short |
Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men |
title_full |
Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men |
title_fullStr |
Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men |
title_full_unstemmed |
Effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men |
title_sort |
effect of a single bout of morning or afternoon exercise on glucose fluctuation in young healthy men |
publisher |
Wiley |
series |
Physiological Reports |
issn |
2051-817X |
publishDate |
2021-04-01 |
description |
Abstract The timing of exercise plays an important role in the effect of the exercise on physiological functions, such as substrate oxidation and circadian rhythm. Exercise exerts different effects on the glycemic response to exercise and meal intake depending on when the exercise performed. Here, we comprehensively investigated the effects of the timing (morning or afternoon) of exercise on glucose fluctuation on the basis of several indices: glycemic variability over 24 h (24‐h SD), J‐index, mean amplitude of glucose excursions (MAGE), continuous overall net glycemic action (CONGA), and detrended fluctuation analysis (DFA). Eleven young men participated in 3 trials in a repeated measures design in which they performed a single bout of exercise at 60% of their maximal oxygen uptake for 1 h beginning either at 7:00 (morning exercise), 16:00 (afternoon exercise), or no exercise (control). Glucose levels were measured using a continuous glucose monitoring system (CGMs). Glucose fluctuation was slightly less stable when exercise was performed in the afternoon than in the morning, indicated by higher CONGA at 2 h and α2 in DFA in the afternoon exercise trial than in the control trial. Additionally, decreased stability in glucose fluctuation in the afternoon exercise trial was supported by the descending values of the other glucose fluctuation indices in order from the afternoon exercise, morning exercise, and control trials. Meal tolerance following exercise was decreased after both exercise trials. Glucose levels during exercise were decreased only in the afternoon exercise trial, resulting in less stable glucose fluctuations over 24 h. |
topic |
continuous glucose monitoring exercise timing glucose fluctuation |
url |
https://doi.org/10.14814/phy2.14784 |
work_keys_str_mv |
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