著者

武田 紘平 田中 喜代次 麻見 直美 沼田 治 笹井 浩行 武政 徹

出版者

一般社団法人日本体力医学会

雑誌

体力科学 (ISSN:0039906X)

巻号頁・発行日

vol.70, no.3, pp.199-205, 2021-06-01 (Released:2021-05-13)

参考文献数

18

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Mitochondria activation factor (MAF) which is high-molecular weight polyphenol contained in black tea and oolong tea can increase the mitochondrial membrane potential. MAF supplementation to mice facilitates endurance running performance after 9-week endurance training and muscle hypertrophy induced by synergist ablation. In this study, we examined the effect of oral MAF supplementation on overall physical fitness (expressed as physical fitness age) in physically active middle-aged and older women. This study is a randomized double-blind placebo-controlled trial implemented between January and May 2019 at three fitness facilities in Ibaraki, Japan. Seventy middle-aged women aged 55 to 69 years were randomly assigned into placebo (n = 35) and MAF groups (n = 35). The placebo participants took cornstarch-containing capsules, and the MAF participants took MAF-containing capsules twice a day for 80 days consecutively. During the intake period, all participants were instructed to follow 30-min circuit training program at least twice a week. Physical fitness age was computed with eight physical fitness items assessing upper-extremity muscle strength, locomotion, and postural change. The physical fitness age decreased by 1.48 years (95% confidence interval [CI]: -2.66, -0.30) in the placebo group and 3.01 years (95% CI: -4.16, -1.86) in the MAF group. The reduction was greater in the MAF group, but did not reach statistical significance (p = 0.06). The combination of 80-day of MAF intake and circuit exercise showed beneficial results. However, our results did not indicate clear effects on physical fitness age because of low statistical power. Further studies are necessary to reveal the effects of MAF supplementation.

著者

増地 克之 町田 正直 松井 崇 薬師寺 巨久 金野 潤 小山 勝弘 岡田 弘隆 金丸 雄介 小俣 幸嗣 武政 徹

出版者

日本武道学会

雑誌

武道学研究 (ISSN:02879700)

巻号頁・発行日

vol.42, no.2, pp.2_1-2_9, 2009-11-30 (Released:2012-08-28)

参考文献数

14

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The purpose of this study is to evaluate “Speed Uchikomi” as a form of strength training. We measured the following variables to evaluate the efficiency of this training, the heart rate according to the different pace of uchikomi, and the percentage of maximal oxygen consumption calculated from the heart rate and RPE. Endocrinological data, such as plasma lactic acid, ACTH and GH levels were also measured. The results were as follows: 1) We inferred from the cardiorespiratory response that “Speed Uchikomi” exceeds 70% maximal oxygen consumption when the frequency is more than once every 1.5 seconds. Therefore, when we use uchikomi as strength training, it should be done at a frequency of more than once every 1.5 seconds. 2) A gradual increase in the plasma lactic acid level, depending on the uchikomi frequency, was observed. “Speed Uchikomi” with a rate of more than once every 1.5 seconds gives a higher value than that of the lactate threshold or onset of blood lactate accumulation. From its energy metabolism, “Speed Uchikomi” is effective as endurance training. 3) “Speed Uchikomi” with a frequency of once every second increased the plasma ACTH level compared with the resting level. In other words, it is suggested that uchikomi which is a basic judo practice, has a significant influence on the endocrine system. 4) After performing “Speed Uchikomi” at the rate of once every second, the plasma GH level increased higher than the resting level, which means it has an anabolic effect. 5) The training rate of once every second is very exhausting and is expected to be more efficient than training at a rate of once every 1.5 seconds, but training like this without planning also carries a risk of overworking.

著者

長谷川 悦示 大熊 廣明 武政 徹

出版者

筑波大学体育科学系

雑誌

体育科学系紀要 (ISSN:03867129)

巻号頁・発行日

vol.30, pp.185-196, 2007-03

著者

武政 徹

巻号頁・発行日

2013

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科学研究費助成事業(科学研究費補助金)研究成果報告書:基盤研究(A)2009-2012