大学女子剣道部員における寒稽古時の夜間尿中カテコラミン排泄量とフィットネスの変化
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概要
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Most kendo players have gone through a traditional form of training, called Kangeiko. Kangeiko is a high intersity training camp carried out during the cold early mornings of winter. The aim of Kangeiko is to cultivate the mind and improve the physical fitness of the kendo players. In this study, we examined the changes in nocturnal urinary catecholamines excretion, aerobic fitness, and subjective condition during kangeiko in kendo. Training in Kangeiko was performed for about two hours from 5: 00 to 7: 00 am., and Kangeiko was continued for ten days in January in 1995. Training program during Kangeiko consisted of Kirikaeshi and Kakarigeiko for 30-40minutes, and Gokakugeiko for about 30minutes by interval training form. We measured nocturnal urinary catecholamines (dopamine, adrenaline, and noradrenaline) excretion in five female college kendo players throughout Kangeiko, and evaluated their aerobic fitness before and the 3rd day after Kangeiko using multistage fitness test. Resting blood creatine kinase (CK) activity was measured before training on the first,6th, and 10th days of Kangeiko, and the 3rd day after Kangeiko. Each players kept recording their subjective condition, such as fatigue, muscle soreness etc., using 7-point rating scale from 1 (very bad) to 7 (very well) throughout Kangeiko. Nocturnal urinary catecholamines excretion were increased on the 3rd and/or 8th days of Kangeiko, but with no significance. Aerobic fitness fell the 3rd day after Kangeiko. There were significant correlations between changes in nocturnal urinary catecholamines excretion and aerobic fitness. Subjective condition was significantly decreased throughout Kangeiko. In most of the players, some of subjective condition became worse with the changes in nocturnal urinary catecholamines excretion. Compared with the first day of Kangeiko, resting blood CK activities were significantly increased on the 6th and 10th days of Kangeiko, indicated that repetition of high intensity training during Kangeiko produced remarkable disruption of muscle tissue. Change in basal sympathetic activity induced by extreme physical and mindful stress during Kangeiko might cause changes in aerobic fitness and subjective condition of the kendo players. Training program should be designed in consideration of individual differences in those stress during Kangeiko, as well as adequate health care.
- Japanese Academy of Budoの論文
Japanese Academy of Budo | 論文
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