The Korean Journal of Physiology

The Korean Physiological Society (대한생리학회)
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Physiological Analysis of Freestyle and Breast Stroke Swimming in High School Boys

산소 섭취량을 통하여 관찰한 수영의 생리학적 분석

  • Nam, Kee-Yong (Department of Physiology and Physical Culture Research Institute, Seoul National University College of Medicine) ;
  • Kwon, Seung-Rak (Department of Physiology and Physical Culture Research Institute, Seoul National University College of Medicine) ;
  • Cho, Yoon-Sik (Department of Physiology and Physical Culture Research Institute, Seoul National University College of Medicine) ;
  • Kim, Yoon-Sun (Department of Physiology and Physical Culture Research Institute, Seoul National University College of Medicine) ;
  • Kim, Dai-Sung (Department of Physiology and Physical Culture Research Institute, Seoul National University College of Medicine) ;
  • Kim, Young-Tai (Department of Physiology and Physical Culture Research Institute, Seoul National University College of Medicine)
  • 남기용 (서울대학교 의과대학 생리학교실 및 국민체력과학 연구소) ;
  • 권승락 (서울대학교 의과대학 생리학교실 및 국민체력과학 연구소) ;
  • 조윤식 (서울대학교 의과대학 생리학교실 및 국민체력과학 연구소) ;
  • 김윤선 (서울대학교 의과대학 생리학교실 및 국민체력과학 연구소) ;
  • 김대성 (서울대학교 의과대학 생리학교실 및 국민체력과학 연구소) ;
  • 김영태 (서울대학교 의과대학 생리학교실 및 국민체력과학 연구소)
  • Published : 1969.06.01
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Abstract

Physiological analysis of swimming in 13 (age:16.3 years, freestyle swimming) and 15 (age:17.2 years, breast stroke swimming) high school boys through oxygen uptake and oxygen debt measurements were performed. The following results were obtained. 1. In freestyle swimming oxygen debt was greater and mechanical efficiency was lower in subjects with less speed. In beginner efficiency was only 1.35%, whereas, in a more skilled subject it ranged to 4.28%. The mean efficiency was 2.59%. 2. In freestyle swimming the speed-oxygen debt curve was convex to the speed axis and the curve shifted to the right the more the speed was greater. 3. Maximal oxygen uptake in breast stroke swimming was 2.51 l/min or 41.8 ml/kin/kg and was 79.3% of treadmill running. Maximal pulmonary ventilation in breast stroke swimming was 73.1 l/min and was 87% of treadmill running. Maximal ventilation equivalent was 2.89 liters. 4. In subjects with greater speed of breast stroke swimming maximal oxygen uptake and mechanical efficiency of swimming were greater. The mechanical efficiency of breast stroke swimming averaged 1.08% $(range:0.51{\sim}1.70%)$. The coefficient of correlation between speed and efficiency was r=.87.

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