発育期における運動部活動が,筋厚,筋力および
間欠的スプリント走パワーに及ぼす影響
−高校生サッカー選手に関する事例研究−
金久 博昭 福永 哲夫 小沢 治夫*
Effect of regular exercise on muscle thickness,
muscle strength, and intermittent sprint running power in the period
on development ; a study on high school soccer players
Hiroaki KANEHISA, Tetsuo FUKUNAGA, Haruo OZAWA*
The purpose of this study was to investigate the effects of regular exercise on muscle thickness,
muscle strength, and intermittent sprint running power in the period of development. The subjects
were 25 high school soccer players who had played soccer in junior high school as an extra
curricular activity ; 9 first-year (H 1), 8 second-year (H 2) and 8 third-year (H 3) students. The
muscle thicknesses at four sites of the lower extremity (the thigh anterior, thigh posterior, lower
leg anterior and lower leg posterior) , measured using a brightness-mode ultrasound apparatus, were
similar between the three groups. In comparison with untrained adult men previously examined,
however, the soccer players showed significantly greater muscle thicknesses at the thigh posterior
and lower leg anterior. The soccer players showed no significant group differences in isokinetic
knee extension or flexion torques determined at three constant velocities of 60, 180 and 300 deg/s.
On the other hand, the mean power relative to body weight, developed in 10 maximal sprint running
efforts for 5 seconds with an interval of 10 seconds between trials on a treadmill, was significantly
lower in H I than in H 2 between the 7 th and 10 th trials and than in H 3 between the 5 th and lO
th trials. Thus, the results indicated that playing soccer as an extra curricular activity in high school
onby slightly improved muscle thickness and strength of the lower extremity, if the subject had
played soccer in junior high school. However, continuing to play soccer as an extra curricular
activity in high school may improve fatiguability in repeated short-term maximal exercises.
(Rep. Res. Cent. Phys. Ed. 28 : 35-43, 1999)
東京大学大学院総合文化研究科生命環境科学系身体運動科学研究室 Department of Life Sciences, University of Tokyo
*筑波大学付属駒場中・高等学校 Komaba Secondary School Attached to The University of Tsukuba
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