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KMID : 0381319740130010001
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Korean Journal of Occupational Health
1974 Volume.13 No. 1 p.1 ~ p.6
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Changes in Heart Rate and Oxygen Uptake during Early Stage of Bicycle Ergometer Works
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김순태/Kim, Soon Tae
정종원/이달영/Chung Chong Won/Lee, Dal Young
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Abstract
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In order to examine the responses of heart rate and oxygen uptake during the first minutes of bicycle ergometer work with different loads, we measured the heart rate and oxygen uptake on 9 healthy Korean males every 15 seconds for 3 minutes during ergometer cycling with work loads of 75, 100, 125, 150, 175, 200 and 225 watts.
The results obtained were as follows:
1. Time required for reaching a steady state of heart rate and oxygen uptake was delayed with increasing work loads and it was more significant in case of oxygen uptake.
2. Statistically significant difference was existed in heart rate among different work loads of ergometer cycling except between 125 and 150 watts and between 200 and 225 watts.
3. Statistically significant difference was existed in oxygen uptake among different work loads, expecially within 1 minute after onset of ergometer cycling.
4. The changes in the rates of increase of heart rate(?HR％) and oxygen uptake(?VO₂％) during the work, which were calculated as percentage to the values at 3 minutes after onset of ergometer cycling showed approximately the same pattern regardless of work loads, and the rate of increases was greater in heart rate than in oxygen uptake within 1 minute after onset of ergometer cycling.
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