| Effects of aerobic exercise on the circadian rhythm of heart rate and blood pressure. | |
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MedLine Citation:
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PMID: 20030546 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Although the effects of aerobic exercise on resting heart rate, heart rate variability, and blood pressure have been investigated, there are scant data on the effects of aerobic exercise on the circadian rhythm of such cardiovascular parameters. In this study, we investigated the effects of aerobic exercise on the 24 h rhythm of heart rate and ambulatory blood pressure in the morning, when cardiovascular events are more common. Thirty-five healthy young subjects were randomized to control and aerobic exercise groups. Subjects in the latter group participated in their respective exercise program for two months, while those in the former group did not exercise. Twenty-four-hour electrocardiogram and ambulatory blood pressure monitoring data were obtained at baseline and at the end of the exercise intervention. The control group showed no changes, while the aerobic exercise group showed a significant decrease in heart rate (73.7 +/- 6.6 bpm to 69.5 +/- 5.1 bpm, p < 0.005) and sympathetic activity such as LF/HF ratio (2.0 +/- 0.7 to 1.8 +/- 0.6, p < 0.05) throughout the 24 h period, particularly in the daytime. The decrease in the heart rate was most prominent in the morning. However, heart rate and LF/HF ratio showed no statistical changes during the night. No significant changes were observed in blood pressure. These findings suggest aerobic exercise exerts beneficial effects on the circadian rhythm of heart rate, especially in the morning. |
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Authors:
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Hideyuki Shiotani; Yoichiro Umegaki; Maiko Tanaka; Madoka Kimura; Hiroshi Ando |
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Publication Detail:
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Type: Journal Article; Randomized Controlled Trial |
Journal Detail:
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Title: Chronobiology international Volume: 26 ISSN: 1525-6073 ISO Abbreviation: Chronobiol. Int. Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2009-12-24 Completed Date: 2010-03-02 Revised Date: 2010-05-10 |
Medline Journal Info:
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Nlm Unique ID: 8501362 Medline TA: Chronobiol Int Country: England |
Other Details:
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Languages: eng Pagination: 1636-46 Citation Subset: IM |
Affiliation:
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Department of Preventive Medicine, Graduate School of Health Sciences, Kobe University, Kobe, Japan. hshio@kobe-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blood Pressure
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physiology* Circadian Rhythm / physiology* Exercise / physiology* Female Heart Rate / physiology* Humans Male Young Adult |
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