여성노인의 걷기 운동 시 보행 속도별 운동 강도와 에너지 소비량에 관한 비교·분석

Abstract

The purpose of this study was to compare and analyze the differences in heart rate, exercise intensity (%HRR, RPE), and energy consumption(Kcal/min) according to walking speed. Walking is an aerobic physical activity that has less impact on skeletal muscles and joints compared to sports, such as running or mountaineering. Twelve older females aged over 65 and living in J city, G-do, that could walk 800 m at 120 steps, 140 steps, and 160 steps per minute, participated in this study. The exercise intensity was increased every minute. The number of steps was measured using the metronome beat, the subjective exercise intensity is measured using the RPE, and the energy consumption (Kcal/min) is measured using the regression equation using the heart rate.BRThe results show that the average heart rate was significantly higher(p.01) at 140 steps was 117.4±13.0 compared to 120 steps was 103.2±10.2 bpm/min, Additionally, the average heart rate was significantly higher(p.01) for the 160 steps was 136.7±17.7 than 140 steps was 117.4±13.0. The average exercise intensity per minute was significantly higher(p.01) at 140 steps was 52..8±14.8 %HRR than at, at 120 steps was 37.8±12.0 %HRR. Likewise, average exercise intensity per minute was significantly higher(p.01) at 160 steps was 73.0±19.4 %HRR than at, at 140 steps was 52.8±14.8 %HRR. For the RPE exercise intensity was significantly higher(p.01) according to the number of steps, i.e. 14.1±1.4 at 160 steps, 10.8±1.5 at 140 steps, and 8.7±1.2 at 120 steps. For the energy consumption, there were significant differences(p.01) between the averages according to the step speed, 5.2±1.3 Kcal/min at 160 steps, 3.7±1.0 Kcal/min at 140 steps, and 2.6±0.8 Kcal/min at 120 steps.BRIn conclusion, as expected there were statistically significant increases in heart rate, exercise intensity(Heart rate and RPE), and energy consumption as the walking speed increased.BRIn this study, 12 elderly women 65 years of age or older were limited to the subjects. However, in future studies, it is necessary to study more specific changes in exercise intensity and energy consumption through studies of all age groups and genders.