걷기운동유형과 속도에 따른 호흡순환계 반응
Cardiorespiratory responses to the types and speeds of walking
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걷기운동유형과 속도에 따른 호흡순환계 반응. 운동과학, 제13권 제3호, 289-300, 2004. 대학생 7명을 대상으로 앞으로(FW), 뒤로(BW), 옆으로(LW)등 3 보행유형별 선호하는 정상보와 급보의 보행속도에 따른 산소소비량(VO2), 심박수(HR), 혈압(BP) 변화를 관찰했다. 사전 실험을 통하여 대상자 스스로 정상보와 급보 속도를 트레드밀에서 선택했다. VO2, HR은 운동 전과 중 매 1분마다, BP는 운동 전과 후에 측정했다. 자료처리는 반복측정 분산분석(Two way repeated measure ANOVA)을 실시하고, 유의수준은 .05이다. 정상보에서 가장 빠른 보행유형은 FW이고, 가장 느린 것은 LW이다(FW, 49.31mmin-1; BW, 24.93mmin-1; and LW, 23.05mmin-1). 정상보의 보수는 각각 90.7stepsmin-1, 79.4stepsmin-1, 61.9stepsmin-1이었다. 급보시 FW의 속도가 가장 빠르고, LW의 속도가 가장 느리다(FW, 85.76m/min; BW, 50.92m/min; LW, 56.28m/min). 급보의 보수는 각각 114.0 steps/min, 111.2 steps/min, 104.4 steps/ min이었다. VO2, HR, BP는 각 걷기 유형간 유의한 차가 나타나지 않았으나 VO2와 HR의 경우 LW와 BW가 FW 보다 증가하는 경향을 보였다. SBP는 정상보시 LW와 BW가 FW 보다, LW가 BW에 보다 크게 증가했다. 급보시도 LW와 BW가 FW 보다 크게 증가했다. 걷기 운동이 심폐기능 강화, 하지재활 운동 프로그램으로 처방되는 경우 FW 보다 느린 속도의 LW나 BW 고려될 수 있다고 사료된다.
Abstract
Cardiorespiratory responses to the types and speeds of walking. Exercise Science, 13(3): 289-300, 2004. Cardiorespiratory responses to the types and speeds of walking in seven male collegiate students were observed. Treadmill walking in forward(FW), backward(BW), and lateral(LW) directions were performed at normal and fast speed which were selected by each subject during the pretest period. VO2 and HR were measured at pre-exercise and every min during the 5 minutes of exercise . BP was measured at pre- exercise and 5 minutes after exercise. The two way repeated measures ANOVA was used for statistical analysis. Statistical significance was accepted at the p<.05 level. In case of normal walking, the fasttest walking is FW and LW is slowest. In case of brisk walking, FW is fasttest. LW is faster than BW. The responses of VO2, HR, and BP are not significantly different among 3 walking types, but the VO2s and HRs during BW and LW are increased more significantly than those during FW. The systolic BPs during BW and LW are increased more sharply than those during FW ; that during LW is increased more sharply than that during BW in case of normal walking. The systolic blood pressures during LW and BW are increased more sharply than those during FW in case of brisk walking. The results of this study suggest that LW and BW could also be considered as one of effective ways to develope the cardiorespiratory exercise program and the rehabilitation program for the lower limbs.
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