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目的:探讨徒步运动中能量消耗的简易推测方法,为大学生运动能量消耗的自我监控和科学健身提供参考。方法:选取北京体育大学学科男性大学生54名(21.12±1.28岁),运动前测身高、体重并计算BMI。受试者分别以4.8 km/h、6.4 km/h、8.1 km/h的步速于跑台上进行运动,每级步速各运动30分钟。Polar表记录运动中心率,每3分钟记录1次。运动过程采用Meta Lyzer 3B气体代谢分析仪收集受试者肺功能指标及能量消耗数据。所得数据通过SPSS19.0软件进行偏相关分析及多元回归建立能量消耗与身体参数的回归方程。最后将预测值与实测值用配对t检验进行比较,检验公式。结果:(1)30分钟徒步运动每分能耗与步速、心率存在非常显著的关联(P<0.01),与BMI、身高、体重存在显著关联(P<0.05);(2)每分能耗(kcal/min)与步速、BMI、心率、体重的回归方程:每分能耗=-8.453+1.030×步速-0.023×BMI+0.032×心率+0.080×体重;(3)各步速能耗推测值与实际值无显著性差异(P4.8=0.255,P6.4=0.470,P8.1=0.353)。结论 :得出的能量推算公式可以步速、BMI、心率及体重4个简易指标较为准确地推算出普通男性大学生步速为4.8 km/h、6.4km/h、8.1 km/h下运动的能量消耗。
OBJECTIVE: To explore a simple method for estimating energy expenditure in walking and to provide a reference for self-monitoring and fitness of college students in energy expenditure. Methods: Fifty-four male college students (21.12 ± 1.28 years old) from Beijing Sport University were selected. Before exercise, height, weight and BMI were calculated. The subjects exercised on the treadmill at a speed of 4.8 km / h, 6.4 km / h and 8.1 km / h, respectively. The pace of each step was 30 minutes for each exercise. Polar table record sports center rate, recorded once every 3 minutes. During exercise, the Meta Lyzer 3B gas metabolism analyzer was used to collect the lung function parameters and energy expenditure data of the subjects. The data obtained by SPSS19.0 software partial correlation analysis and multiple regression to establish energy consumption and body parameters of the regression equation. Finally, the predicted value and the measured value are compared with the paired t test to test the formula. Results: (1) There was a significant correlation between energy expenditure per minute and pace and heart rate (P <0.01) in 30 minutes, and significant correlation with BMI, height and weight (P <0.05); (2) (Kcal / min) and walking speed, BMI, heart rate, body weight regression equation: energy consumption per minute = -8.453 + 1.030 × pace -0.023 × BMI + 0.032 × heart rate + 0.080 × body weight; There was no significant difference between the estimated power consumption and the actual value (P4.8 = 0.255, P6.4 = 0.470, P8.1 = 0.353). CONCLUSION: The derived energy formula can calculate the kinetic energy of walking speed, BMI, heart rate and body weight of 4 normal men with a speed of 4.8km / h, 6.4km / h and 8.1km / h Consumption.