ジュニアスキー選手の体力プロフィール (1) : 下肢動的筋力の特徴

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Eighteen Japanese junior alpine ski racers were studied to evaluate the physical fitness parameters. Measurements of physical characteristics, isometric and isokinetic leg strength (Nm・kg-1) were made to younger group (YG : n=9, age of 13.6±1.59) and older group (OG : n=9, age of 15.4±2.01) . The ratio of isometric muscle strength to that isokinetic muscle strength was calculated to demonstrate the superiority in contraction speed. OG was significantly higher in age and had more percent body fat than YG. OG had significantly more isokinetic knee extension strength than YG at 30 and 180 deg・sec-1. OG had significantly greater isokinetic knee flexion strength than YG at 30, 60 and 180 deg・sec-1. OG also had significantly more isometric and isokinetic hip extension strength than YG at 30, 60, 180 and 300 deg・sec-1. However, no significant differences in hip flexion strength were observed between two groups. OG had high isokinetic/isometric knee flexion strength ratio at slow rates of contraction (30 and 60 deg・sec-1). And both groups had high isokinetic/isometric hip extension and flexion ratio at slow rates of contraction (30 and 60 deg・sec-1). These results suggested that older group had more isokinetic knee and hip strength than younger group and that both groups produced high isokinetic leg strength at low contraction rates. These findings may reflect the performance of slow concentric leg actions specific to alpine skiing.
中京大学の論文
1999-02-26

ジュニアスキー選手の体力プロフィール (1) : 下肢動的筋力の特徴

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