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김시덕,이덕분,이용수,이승균 대한스포츠의학회 1997 대한스포츠의학회지 Vol.15 No.2
The purpose of this study was to compare ACSM and Latin equations for predicting steady-state oxygen uptake with actual oxygen uptake. The subjects were 32 healthy males whose are 15 students and 17 school personnel at Sejong University. Subjects were requested not to eat for 4 h prior to cycle ergometry testing. Subjects were tested by using a Quinton metabolic cart to measure oxygen uptake. The metabolic cart was calibrated before each test according to the Quinton Operating Manual using a reference gas of known concentration. Steady-state oxygen uptake was measured while subjects pedalled at four different workloads: different workloads: 0, 300, 600, 900 kgm/min. Each stage of testing (at each workload) lasted 5 min. The subjects were asked to pedal to pedal at a constant rate (60 rpm) throughout all workloads. A one-way ANOVA with repeated measures was used to test differences between actual and predicted values. Results indicated that the ACSM equation significantly(p<0.05) underestimated oxygen uptake at all four workloads. The Latin equation, by contrast, correctly predicted oxygen uptake at 300, 600, and 900 kgm workloads except at the 0 kgm workload. These result suggest that the Latin equation is more accurate than the ACSM formula for estimating oxygen uptake of loaded cycling. To predict the amount of oxygen uptake according to the each workload and body weight, the new regression equation was calculated by regression analysis. The regression equation was follows; VO_2(ml/min) = (kgm/min 1.9 ml/kgm)+(3.3 ml/kg/min kg body weight)+(225 ml/min) The New equation correctly predicted oxygen uptake at the 300, 600 and 900 kgm workloads except at the 0 kgm workload.
트레드밀 운동부하 방법에 따른 최대산소섭취량 최대심박수 및 운동자각도 비교분석
김여경,이덕분,김시덕,이용수,이용진 대한스포츠의학회 1997 대한스포츠의학회지 Vol.15 No.2
The purpose of this experiment was to compare the VO_2 max, HR max, and the HR and VO_2 at specific RPE level (7.9.11.13.15.17.19) obtained three exercise protocols, Three protocol grade only, Ellestad speed only, and Ramp protocol both speed and were used to imposed greater workloads. Nine healthy male college students(20±2.2yrs) participated voluntarily. The order of three exercises tests was randomly scheduled by draws and 48hrs were given between each test. Borg's RPE scale(6-20point) was used for RPE measurement. The RPE data were collected in the final 10 seconds of each stage. ANOVA with repeated measures indicated no significant differences of HR and VO_2 at RPE 7 to 19 showed the significant differences among the protocols. HR obtained from Balke protocol at RPE level of 13 and 15(143±16.1 beats/min, 160±10.5 beats/min), were significantly lower than that of Ellestad beats/min, (163±14.3 beats/min, 175±14.6 beats/min), respectively (p<0.01). The results suggest that active young men perceive the effort differently on different exercise protocols at 60 to 80% of maximal capacity and may perceive harder on the inclined protocol.