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물체 운반작업에 의한 산소맥의 변화 Oxygen Pulse in Load Carrying

예방의학회지 1972년 5권 1호 p.105 ~ 110
이병국, 배달식, 진항기, 정규철,
소속 상세정보
이병국 ( Lee Byung-Kuk ) 
가톨릭대학교 의과대학 예방의학교실

배달식 ( Bae Tal-Sik ) 
가톨릭대학교 의과대학 예방의학교실
진항기 ( Jin Hang-Ki ) 
가톨릭대학교 의과대학 예방의학교실
정규철 ( Chung Kyou-Chull ) 
가톨릭대학교 의과대학 예방의학교실

Abstract


On 6 healthy adult males aged 20-30 years, oxygen pulse was observed during carrying sand bags weighing 10, 20 and 30 kg on a level treadmill running with speeds of 3, 4 and 5 km/hr. The results obtained were as follows.

1. Oxygen pulse during load carrying on a level treadmill was proportionately increased with an increase -of work I oad, average oxygen uptake per minute. Regression equation of oxygen pulse (y: mlJbeat) on the average oxygen uptake (z: Z/min) required for each grade of work was expressed as y=3.34 x-´5.99, s,..= =0.858).

2. Oxygen pulse reached the highest value 2-5 minutes after the start of load carrying, and thereafter it decreased gradually to some extend as the load carrying was continued. Rate of decrease in the oxygen pulse was greater in lighter works.

3. In lighter works requiring less than 2.0 Z/min of oxygen uptake, no difference in oxygen pulse could be seen between methods of carrying even when the same amount of load was carried. In heavier works requiring more than 2.0 Z/min of oxygen uptake, oxygen pulse was larger in case of carrying a load by embrace, in both hands and on head than in back or on shoulder

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