성인 여성의 최대하 운동 중의 대사반응, 신체변인 및 심박수를 이용한 최대산소섭취량 추정식 개발
Predictions Developments of O2max By Submaximal Metabolical Responses, Physical Variables and HR Responses for Adult Women
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[서론] 본 연구의 목적은 운동검사에서 일반적으로 많이 사용하는 Bruce protocol을 이용한 최대하 운동 중의 대사반응과 신체변인 및 심박수 반응을 이용하여 최대산소섭취량을 추정하는 모형을 개발하고 모형간 추정의 타당도를 비교․분석하는 데 있다. [방법] 연구대상은 성인 여성 198명(32.3±14.1세)이며 Bruce protocol을 이용하여 최대운동부하검사를 실시하였고, 1단계와 2단계 종료 시점의 대사반응을 측정하였다. 측정항목은 O2(ml/kg/min), CO2(ml/kg/min), E(L/min) 및 HR(bpm), HR가 150bpm과 170bpm에 도달하는 시간, Bruce protocol 6분과 3분 심박수 차이 등이었다. 신체자료와 최대하 운동 중 대사반응을 이용하여 최대산소섭취량을 산출하는 모형을 개발하기 위하여 다중회귀분석을 실시하였다. [결과] 모든 변수를 단계별 분석법으로 분석한 전체모형의 R은 0.719와 0.732이고(p<.01) 추정의 표준오차(SEE)는 3.47과 3.41 ml/kg/min, 변동계수(CV)는 10.5와 10.3%이었으며(p<.01). 모형은 다음과 같다. O2 max = 38.943 + 6분O2*.130 + BMI*-.339 + 3분O2*.369 + 3분HR*-.062 + Age*-.058. 단계별분석법으로 분석한 3분모형1과 모형2의 R은 0.673과 0.681이고, SEE는 3.66와 3.63 ml/kg/min, CV는 11.1과 11.0%로 나타났고(p<.01), 다중공선성이 나타나지 않았다. 6분모형1과 모형2의 R은 0.649와 0.692이었고(p<.01), SEE는 3.76과 3.58 ml/kg/min, 변동계수(CV)는 11.4와 10.8%로 나타났다(p<.01). 신체변인 모형1과 모형2의 R은 0.571과 0.588이고, SEE는 4.06과 4.01 ml/kg/min, CV는 12.3과 12.2%로 나타났으며(p<.01), 모형은 다음과 같다. O2 max = 74.582 + BMI*-.688 + Age*-.075 + Height*-.141. 심박수 모형인 HR150모형의 R은 0.157로 다소 낮게 나타났고, SEE는 4.88 ml/kg/min, CV는 14.8%로 나타났다. [결론] 최대산소섭취량 추정식의 타당도는 최대산소섭취량 추정에는 전체모형, 6분모형, 3분모형, 신체변인 모형 및 HR150모형 순으로 나타났다. 추정식의 타당도, 유용성과 간편성을 고려하면 신체변인 모형과 3분 모형이 권장되고 6분운동을 수행한 경우에는 전체모형과 6분모형이 권장되는 것으로 나타났다.
Abstract
[INTRODUCTION] The purpose of this study was to develop the prediction model of O2max using submaximal metabolic responses from the Bruce protocol, and General Variables and HR responses for South Korean adult women. [METHOD] The subjects were consisted of 198 South Korean adult women They were participated maximal exercise testing with Bruce treadmill protocol(Bruce et al., 1973), and the general physical variables and the metabolic responses were measured in the end of the first(3 minute) and second stage(6 minute). Measurement items were Age, WT, HT, BMI, and VO2, VCO2, VE, HR of 3 and 6 minute, time to HR 150 bpm. To determine the predicted model of VO2max, multiple and simple regression analysis with stepwise methods analysis were applied. [RESULT] Analyzing with all variables using stepwise method, the multiple R of total variable model were 0.719 and 0.732(p<.01), SEE were 3.47, 3.41 ml/kg/min, CV were 10.5, 10.3%. VO2 max = 38.943 + 6minVO2*.130 + BMI*-.339 + 3minVO2*.369 + 3minHR*-.062 + Age*-.058. The multiple R of 3 minutes model were 0.673, 0.681, SEE were 3.66, 3.63 ml/kg/min, CV was 11.1, 11.00%(p<.01). The multiple R of 6 minutes model were 0.649, 0.692, SEE were 3.58, 3.76 ml/kg/min, CV were 11.4, 10.8%. The multiple R of general variables model were 0.571, 0.588, SEE were 4.06, 4.01 ml/kg/min, CV were 12.3, 12.2%. VO2 max = 74.582 + BMI*-.688 + Age*-.075 + Height*-.141. The R of HR 150 model was 0.157, SEE was 4.88 ml/kg/min, CV was 14.8%. The multicolinearity did not appeared on all of model. [CONCLUSION] In conclusion, with considering usefulness and convenience through the validity of these prediction models, the prediction model of maximal oxygen consumption recommended total model, general variables model, 6 and 3 minute model, and HR 150 model by tunes.
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