水泳授業時の心拍数変動と時間泳による運動処方の検討

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  • An Evaluation on the Exercise Intensities by Means of Heart Rate Changes during the 5, 10 and 15 min-Swims and Skill Drills

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The purpose of this study was to evaluate the exercise intensities by use of heart rate changes during 5, 10 and 15 min-swims and skill drills. The subjects were 35 female and 5 male varsity students, aged from 19 to 21 years, and performed the swim lessons with crawl stroke. Heart rate responses in 3 male varsity students were measured by means of heart rate memory system, and the exercise intensities was estimated using in terms of HR, %HR max, and R.P.E. The means and SD for velocities during exercises were 8.9 ± 1.Om/min for skill drills, 38.3±7.9m/min, 28.8±8.3m/min, 31.9±7.8m/min for 5, 10 and 15 min swims respectively. In the skill drills at the swim lessons, the means of %HR max were 48.1-67.5%, and R.P.E. were approximately 13.0 (fairy hard). While in the 5, 10 and 15 min-swims, %HR max were 82.2%, 85.5%, 88.4% and R.P.E. were 17.0, 17.0, 19.0 respectively. However in the 15 min-swim, HRmax, the means of % HR max and R.P.E. in well-skilled swimmer (183 beats/min, 88.4%, 19.0) coincided with less-skilled swimmer (183 beats/min, 91.9%, 19.0). It was suggested that exercise intensities in this swimming program, including the skill drills and 5, 10 and 15 min-swims, might be adequate for improvement aerobic work capacity.

水泳運動を大学一般体育実技の種目の1つとして取り入れ,動きづくり(技術練習)と続けて長く泳ぐこと(時間泳)をねらいとした授業を展開し,同時にその時の運動量,心拍数およびR.P.Eを測定し,これらの指標をもとに効果的指導法と運動処方の検討を行った.その結果,授業1単位あたりの平均可泳距離は約600～800m,技術練習による平均泳距離およびR.P.Eはそれぞれ約400m/45分,13であった.時間泳(5,10,15分間)による平均可泳距離はそれぞれ約200m,300m,および450mであり,R.P.Eは3者ともほぼ15であった.バディシステムによる技術練習中の% HRmaxは48.1～67.5%と比較的軽い運動強度であったが,技術の習熟度による違いがみられた.しかし,時間泳中の%HRmaxは習熟度にあまり関係なくほぼ80～90%近くにも達していた.有酸素性作業能力の改善をねらいとした水泳運動を行うには,授業1単位時間のなかに時間泳と同時に技能の向上をめざすプログラムを併用することが望ましい.

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