Circadian Rhythm Based Walking Therapy for the Prevention of Hypertension
【Supercategory：7. DESCENTE SPORTS SCIENCE Subcategory：7.38 Vol.38】
ABSTRACT
It has been reported that 9,070,000 individuals had hypertension and 400,000,000 individuals had prehypertension in Japan, 2011. In view of the huge population of prehypertension and its high possibility to develop hypertension without a proper treatment, effective measures to control the blood pressure (BP) of this population is indispensable. For this population, aerobic exercise, such as walking, is generally recommended. However, it has been reported that exercise token at different timing of a natural day have different endocrinal response, which may also influence the BP. Further, among the types of aerobic exercise, walking is considered as an appropriate one for its flexibility and efficacy in lowering BP. Therefore, in this study, we focus on the influence of the timing of walking to the BP control for the prehypertension subjects. We recruited 6 subjects to participate in a 1-month walking therapy trial, who were randomly assigned to the afternoon group (AG) and the comparative group (CG). In AG, subjects would have the walking exercise when their deep body temperature came to its peak in terms of circadian rhythm. In CG, subjects could choose to have the walking exercise in the morning or evening according to their own schedule. One-way ANOVA were used to test if the walking is effective in BP control for each individual. For the AG and CG, the differences between the baseline BPs and the BPs during 1-month walking therapy were then compared by two sample unpaired Student t test. According to One-way ANOVA, both AG and CG have a decreased systolic BP in the morning and evening before sleep (p<0.05), but have little influence on daytime BPs, which may also be influenced by the social factors. According to the Student t test, it suggests that the walking therapy in the afternoon might have a better effect on lowering the systolic BP in the morning and evening (p<0.05), and also on lowering the diastolic BP in the evening (p<0.05). The results of the trials suggest the possibility of attaining a better effect in BP control by adjusting the timing of walking according to personal circadian rhythm.
DESCENTE SPORTS SCIENCE Vol.38/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
It has been reported that 9,070,000 individuals had hypertension and 400,000,000 individuals had prehypertension in Japan, 2011. In view of the huge population of prehypertension and its high possibility to develop hypertension without a proper treatment, effective measures to control the blood pressure (BP) of this population is indispensable. For this population, aerobic exercise, such as walking, is generally recommended. However, it has been reported that exercise token at different timing of a natural day have different endocrinal response, which may also influence the BP. Further, among the types of aerobic exercise, walking is considered as an appropriate one for its flexibility and efficacy in lowering BP. Therefore, in this study, we focus on the influence of the timing of walking to the BP control for the prehypertension subjects. We recruited 6 subjects to participate in a 1-month walking therapy trial, who were randomly assigned to the afternoon group (AG) and the comparative group (CG). In AG, subjects would have the walking exercise when their deep body temperature came to its peak in terms of circadian rhythm. In CG, subjects could choose to have the walking exercise in the morning or evening according to their own schedule. One-way ANOVA were used to test if the walking is effective in BP control for each individual. For the AG and CG, the differences between the baseline BPs and the BPs during 1-month walking therapy were then compared by two sample unpaired Student t test. According to One-way ANOVA, both AG and CG have a decreased systolic BP in the morning and evening before sleep (p<0.05), but have little influence on daytime BPs, which may also be influenced by the social factors. According to the Student t test, it suggests that the walking therapy in the afternoon might have a better effect on lowering the systolic BP in the morning and evening (p<0.05), and also on lowering the diastolic BP in the evening (p<0.05). The results of the trials suggest the possibility of attaining a better effect in BP control by adjusting the timing of walking according to personal circadian rhythm.
DESCENTE SPORTS SCIENCE Vol.38/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE
| Researcher | Ming Huang*1, Toshiyo Tamura*2 |
|---|---|
| University or institution | *1 Graduate School of Information Science, Nara Institute of Science and Technology, *2 Waseda University |
Keywords
Hypertension, walking thepray, circadian rhtyhm, wearable device, deep body tempearture