カロリー計による運動時エネルギー消費量の検討 : その2 トレッドミル運動と戸外運動の相違

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  • A study on energy expenditure during exercise as measured by the calorie counter : Part 2 The difference between treadmill and outdoor exercise

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In the present study, we investigated the reliability of the calorie counter (Kenz Calorie Counter Select) by comparing the value for actual energy expenditure, as measured by oxygen uptake, with that given by the calorie counter for walking and running, outdoors and on a treadmill, at the same speed. Our study subjects were 22 junior college students (6 men and 16 women) who were studying health and physical education. The results are summarized as follows : 1) The amount of energy expended while walking was significantly higher on the treadmill than outdoors for both men and women. The mean differences for men ranged from 0.009 to 0.012 kcal/kg/min, while those for women ranged from 0.007 to 0.015 kcal/kg/min. Furthermore, the ratio of outdoos/treadmill given by the calorie counter's readings was significantly higher than that of actual energy expenditure measured by the oxygen uptake. 2) As for running, the calorie counter gave readings significantly higher than actual energy expenditure in only women. The, mean differences between treadmill and ourdoor exercise were 0.011 kcal/kg/min and 0.020 kcal/kg/min, respectively. Moreover, there was no significant difference between treadmill and outdoor exercise for either men or women. Thus, we suggest that the calorie counter's readings were relatively higher than actual energy expenditure, as measured by the oxygen uptake, when comparatively active young women walked. We also feel that there is room to reexamine the coefficient, in the calorie counter, for energy consumption corresponding to the intensity for each exercise. Hereafter, we think it is necessary to examine the reliability of the calorie counter when studying sedentary men and women.

identifier:10

identifier:KJ00004180510

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