Effects of Acute Endurance Exercise Performed in the Morning and Evening on Inflammatory Cytokine and Metabolic Hormone Responses

PLoS One

Sun-Kyoung Lee¹  Shizuo Sakamoto²  Katsuhiko Suzuki³  Hiroki Tabata⁴  Masaki Takahashi⁵  Hyeon-Ki Kim⁶  Naoya Endo⁶  Shigeharu Numao⁷  Masayuki Konishi⁸  Young-Hak Kim⁹ 

[1] Department of Health and Sports Sciences, Kyoto Pharmaceutical University, Kyoto, Japan;Department of Oriental Martial Arts, Yongin University, Yongin, Korea;Department of Sports and Physical Arts, Myongji University, Seoul, Korea;Faculty of Science and Engineering, Waseda University, Tokyo, Japan;Faculty of Sport Sciences, Waseda University, Saitama, Japan;Graduate School of Sport Sciences, Waseda University, Saitama, Japan;Japan Institute of Sports Sciences, Tokyo, Japan;Research Fellow of the Japan Society for the Promotion of Science, Tokyo, Japan;Waseda Institute for Sport Sciences, Waseda University, Tokyo, Japan

关键词: Exercise;    Cytokines;    Epinephrine;    Cortisol;    Fatty acids;    Blood plasma;    Inflammation;    Plasma volume;   

DOI  :  10.1371/journal.pone.0137567

学科分类：医学（综合）

来源: Public Library of Science

【 摘 要 】

Purpose To compare the effects of endurance exercise performed in the morning and evening on inflammatory cytokine responses in young men. Methods Fourteen healthy male participants aged 24.3 ± 0.8 years (mean ± standard error) performed endurance exercise in the morning (0900–1000 h) on one day and then in the evening (1700–1800 h) on another day with an interval of at least 1 week between each trial. In both the morning and evening trials, the participants walked for 60 minutes at approximately 60% of the maximal oxygen uptake (V·O2max) on a treadmill. Blood samples were collected to determine hormones and inflammatory cytokines at pre-exercise, immediately post exercise, and 2 h post exercise. Results Plasma interleukin (IL)-6 and adrenaline concentrations were significantly higher immediately after exercise in the evening trial than in the morning trial (P < 0.01, both). Serum free fatty acids concentrations were significantly higher in the evening trial than in the morning trial at 2 h after exercise (P < 0.05). Furthermore, a significant correlation was observed between the levels of IL-6 immediately post-exercise and free fatty acids 2 h post-exercise in the evening (r = 0.68, P < 0.01). Conclusions These findings suggest that the effect of acute endurance exercise in the evening enhances the plasma IL-6 and adrenaline concentrations compared to that in the morning. In addition, IL-6 was involved in increasing free fatty acids, suggesting that the evening is more effective for exercise-induced lipolysis compared with the morning.

【 授权许可】

CC BY