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Effects of physical exercise on human circadian rhythms
| Title: | Effects of physical exercise on human circadian rhythms |
| Authors: | YAMANAKA, Yujiro Browse this author | | HONMA, Ken-ichi Browse this author | | HASHIMOTO, Satoko Browse this author | | TAKASU, Nana Browse this author | | MIYAZAKI, Toshihiko Browse this author | | HONMA, Sato Browse this author |
| Keywords: | Circadian rhythm | | Entrainment, human | | Phase shift | | Physical exercise |
| Issue Date: | Oct-2006 |
| Journal Title: | Sleep and Biological Rhythms |
| Volume: | 4 |
| Issue: | 3 |
| Start Page: | 199 |
| End Page: | 206 |
| Publisher DOI: | 10.1111/j.1479-8425.2006.00234.x |
| Abstract: | Bright light is the principal zeitgeber for the biological clock in mammals, including humans. But there is a line of evidence that non-photic stimuli such as physical activity play an important role in entrainment. Scheduled physical activity, such as wheel and forced treadmill running, has been reported to phase-shift and entrain the circadian rhythm in rodent species. In humans, several studies have reported the phase-shifting effects of physical exercise. A single bout of physical exercise at night was demonstrated to phase-delay the circadian rhythm in plasma melatonin. However, for the entrainment of human circadian rhythm, a phase-advance shift is needed. Previously, we demonstrated that scheduled physical exercise in the waking period facilitated the entrainment of plasma melatonin rhythm to the sleep/wake schedule of 23 h 40 min. This result suggested that timed physical exercise produced phase-advance shifts. A regular physical exercise also facilitated entrainment of the circadian rhythms associated with acute phase-delay shifts of the sleep/wake and light/dark schedule. These findings suggest that physical exercise is useful to adjust the circadian rhythm to external time cues, especially for totally blind people and elderly people. |
| Rights: | The definitive version is available at wileyonlinelibrary.com |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/45263 |
| Appears in Collections: | 医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 山仲 勇二郎
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