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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국전문물리치료학회 한국전문물리치료학회지 한국전문물리치료학회지 제7권 제2호
발행연도
2000.1
수록면
20 - 34 (15page)

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초록· 키워드

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The purpose of this study was to establish modified physiological cost index (PCI) for predicting energy consumption by heart rate (HR) at isokinetic ergometer exercise testing. The subjects were twenty-eight healthy men in their twenties. All ofthemperformed upper and lower extremity isokinetic ergometer exercise tests which had six loads (400, 500, 600, 700, 800, and 900 kg-m/min) and five loads (400, 500, 600, 700, and 800 kg-m/min) respectively. The exercise sessions were finished whenHRwasin plateau. HR and oxygen consumption were determined during the final minute. Resting heart rate and oxygen consumption were used for calculating heart rate, oxygen consumption changes and modified PCI. Regression analysis established therelationshipbetween each variable to work load, HR and oxygen consumption. The results were as follows: 1) In the lower extremity ergometer exercise test, oxygen consumption increased continuously as work load increased, but in the upper extremity ergometertest,oxygen consumption only increased until work load was 700 kg-m/min. 2) HR increased as work load increased in both exercise tests, but in the upper extremity ergometer test, HR decrease from the 700 kg-m/min. 3) The modified PCI increased asworkloadincreased until the 700 kg-m/min point in the lower extremity ergometer test and until the 500 kg-m/min point in the upper extremity ergometer test when it started to decrease in both tests. 4) In the lower extremity ergometer exercise test,regressionanalysis established the relation as dVO2 = -.0215HR - .2141 where dVO2 is given in 1/min and HR in beat/min (R2 = .2677, p= .000). In the upper extremity ergometer exercise test, regression analysis establishedtherelation as dVO2 = -.0115HR + .2746 (R2 = .1308, p= .000). The results of this study were similar to previous studies but were different under high work load conditions. So modified PCI should be used with only low intensityworkload testing. Subjects for upper extremity ergometer exercise testing should complete a prescribed training course prior to testing, and only low intensity work load should be used for sftety conseiderations.

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