著者

加賀谷 淳子

出版者

公益財団法人 日本学術協力財団

雑誌

学術の動向 (ISSN:13423363)

巻号頁・発行日

vol.11, no.11, pp.52-53, 2006-11-01 (Released:2009-12-21)

参考文献数

3

著者

加賀谷 淳子

出版者

一般社団法人 日本体育学会

雑誌

体育学研究 (ISSN:04846710)

巻号頁・発行日

vol.46, no.5, pp.429-442, 2001-09-10 (Released:2017-09-27)

被引用文献数

4 5

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The recent development of non-invasive ultrasound for studying blood flow has contributed to knowledge about changes in blood flow to exercising muscle. Using this method, the vessel diameter of conduit arteries, such as the femoral artery and brachial artery, was measured. The diameter of the brachial artery tncreased as handgrip exercise was prolonged, though no changes in diameter were observed in the femoral artery during knee extension exercise. Blood flow to the muscle was impeded mechanically by muscle contraction due to the increased intramuscular pressure even at low intensity (10% MVC). A greater reduction of muscle blood flow was demonstrated during the concentric phase, and it recovered toward the baseline during the eccentric phase. The effect of geometrical changes in muscle fibers on muscle circulation remained to be studied. The Doppler ultrasound method with good time resolution allowed us to investigate the time course of blood flow changes during exercise. The results of previous studies indicated a faster adaptation of muscle blood flow at the onset of exercise, followed by a steady state or gradual increase toward the end of exercise, depending on the exercise intensity. Redistribution of blood flow between active muscles has been an issue of interest; several studies indicated blood flow reduction during combined exercise and others did not. Further studies should be conducted focusing on the combination of the exercise intensity of individual muscle recruited during exercise. Muscle blood flow plays a key role in determining muscle endurance capacity. However, it is still unknown how high muscle blood flow increases during exercise. Accumulation of knowledge about exercise-induced maximal blood flow is needed in relation to training, exercise mode, exercise intensity, exercise frequency and contraction/relaxation schedule during the duty cycle.

著者

加賀谷 淳子

出版者

早稲田大学スポーツ科学学術院

雑誌

スポーツ科学研究

巻号頁・発行日

vol.6, pp.30-35, 2009

著者

西嶋 尚彦 鈴木 宏哉 大塚 慶輔 田中 秀典 中野 貴博 高橋 信二 田渕 裕崇 山田 庸 加賀谷 淳子 福永 哲夫 久野 譜也 松田 光生

出版者

日本体力医学会

雑誌

体力科學 (ISSN:0039906X)

巻号頁・発行日

vol.52, pp.213-224, 2003-08-01

参考文献数

37

被引用文献数

3 2

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The purpose of this study was to confirm the causal structure model of muscle, motor and living functions utilizing structural equation modeling (SEM). As subjects, 103 community-dwelling older men and women, aged 65.7±6.9 years of age, participated in the study to measure muscle cross-sectional area, maximum voluntary contractions, muscle power, 4 physical performance tests, and 16 questionnaires regarding ability of activities of daily living. The causal structure model of muscle, motor and living functions was hypothesized to be a hierarchical causal structure. The causal structure model of muscle function was hypothesized to be a hierarchical causal structure consisting of 3 sub-domains of muscle mass, muscle strength, and muscle power. Data analysis procedures were as follows : a) testing of construct validity of muscle function variables using confirmatory factor analysis (CFA) in SEM ; b) testing of causal structure using SEM ; c) testing of factor invariance using multi-group analysis for gender. The highest goodness of fit indices was obtained in the causal structure model of muscle, motor and living functions (NFI=.928, CFI=.978, RMSEA =.061). The causal coefficient of muscle function to motor function was. 98 (p<.05), followed by .34 for motor function to living function. From the results of multi-group analysis, the measurement invariance model indicated the highest goodness of fit indices (TLI=.968, CFI=.977). It was concluded that the hierarchical causal relation was among muscle, motor and living functions, and in which muscle function was consisted of 3 sub-domains.

著者

加賀谷 淳子 本間 幸子

出版者

社団法人日本体育学会

雑誌

日本体育学会大会号

巻号頁・発行日

no.48, 1997-08-29