摘要
Purpose: To determine the difference of energy expenditure between backward and forward walking, as well as estimation of energy expenditure at different percent grade of backward walking. Methods: Nine (9) healthy college PE male students were voluntarily recruited (25.4 ± 0.9 yr, 178.1 ± 1.8 cm, 70.0 ± 3.7 kg, BMI: 22.0 ± 0.9 kg/m^2). Subjects performed five bouts, 6 min for each bout, of walking exercise on treadmill at 2.0 mile/hr, including backward walking (0, 5, 10, 15% grade) and forward walking (0% grade). Expired gases during each bout of exercise test at 4-6 min, regarded as a stable physiological status, and heart rate were collected by energy metabolism system of Vmax29 for further analysis. Parameters including oxygen consumption (VO2), METs, energy expenditure, and HR were measured or calculated. Data were analyzed using repeated measures of one-way ANOVA by SPSS 13.0, and the significance level was set at p＜.05. Results: At 0 % grade, parameters of backward walking were significantly higher than those of forward walking (p＜.05). Mean comparison of parameters of backward walking at different grades showed that higher grades result in higher values than those of lower grades (p＜.05). Conclusion: The energy expenditure of backward walking are higher than that of forward walking, and higher grades cost more energy. Thus, people who are looking for weight control or feel interests can consider taking backward walking in safe conditions.
並列摘要
Purpose: To determine the difference of energy expenditure between backward and forward walking, as well as estimation of energy expenditure at different percent grade of backward walking. Methods: Nine (9) healthy college PE male students were voluntarily recruited (25.4 ± 0.9 yr, 178.1 ± 1.8 cm, 70.0 ± 3.7 kg, BMI: 22.0 ± 0.9 kg/m^2). Subjects performed five bouts, 6 min for each bout, of walking exercise on treadmill at 2.0 mile/hr, including backward walking (0, 5, 10, 15% grade) and forward walking (0% grade). Expired gases during each bout of exercise test at 4-6 min, regarded as a stable physiological status, and heart rate were collected by energy metabolism system of Vmax29 for further analysis. Parameters including oxygen consumption (VO2), METs, energy expenditure, and HR were measured or calculated. Data were analyzed using repeated measures of one-way ANOVA by SPSS 13.0, and the significance level was set at p＜.05. Results: At 0 % grade, parameters of backward walking were significantly higher than those of forward walking (p＜.05). Mean comparison of parameters of backward walking at different grades showed that higher grades result in higher values than those of lower grades (p＜.05). Conclusion: The energy expenditure of backward walking are higher than that of forward walking, and higher grades cost more energy. Thus, people who are looking for weight control or feel interests can consider taking backward walking in safe conditions.
參考文獻
延伸閱讀
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