著者

福 典之 膳法 浩史 熊谷 仁 田村 好史 宮本 恵里

出版者

順天堂大学

雑誌

挑戦的萌芽研究

巻号頁・発行日

2016-04-01

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本研究では、m.1382A>C多型によるMOTS-cのアミノ酸配列の違い(K14Q)がインスリン作用に及ぼす機序を解明することを目的とした。雄マウスではMOTS-c 14K投与群はプラセボ群やMOTS-c 14Q投与群よりも耐糖能が良好であった。一方、MOTS-c 14Q投与群はプラセボ群と同様の血糖変動を示した。雌マウスでは雄マウスの様な結果は示されなかった。また、MOTS-cの血中動態も雄マウスとは異なっていた。以上の結果は、日本人を中心とした北方アジア人に特異的な多型m.1382A>Cの有無が男性の2型糖尿病と関連するというメカニズムを説明するものと考えている。

著者

村上 晴香 膳法 浩史 宮本(三上) 恵里 菊池 直樹 福 典之

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.65, no.3, pp.277-286, 2016

被引用文献数

2

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Physical fitness including muscle strength and endurance capacity varies substantially among individuals. Physical activity level and exercise behavior also vary among individuals. Many family studies and studies on twins have reported that genetic factors are responsible for heterogeneity in fitness-related traits. However, there is much dispersion in heritability, as previously reported. A systematic review was performed to determine the extent of heritability in physical fitness. A literature search was conducted through PubMed using the following keywords: (heredity or heritability) and ("muscle strength" or "muscle contraction" or endurance or athlete* or fitness or exercise) and (twin* or family). Finally, 43 articles that included 137 phenotypes met the criteria. Only one article focused on the heritability of athletic status. With respect to muscle strength, 23 articles and 54 phenotypes were collected, and showed a range of heritability of 0%-98% (mean: 55±22%). This heterogeneity was partly explained by the ages of subjects. With respect to endurance capacity, 13 articles and 28 phenotypes showed heritability of 0%-93% (mean: 54±25%). The considerable degree of variability in heritability of fitness-related traits may depend on age, sex, race, and environmental factors. Therefore it is necessary to investigate the interaction between genetic factor and factors other than genetic factor. On the other hand, with respect to exercise behavior or physical activity level which is important for improving the physical fitness or health status, the heritability of 0%-85% has also been reported. That is, the genetic factor plays a role in not only physiological phenotypes but also behavioral phenotypes. Understanding of these genetic factors and their mechanisms will lead to improvement in physical fitness or encouragement of physical activity/exercise behavior.

著者

膳法 浩史

巻号頁・発行日

2012

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筑波大学博士 (スポーツ医学) 学位論文・平成24年3月23日授与 (甲第6265号)