| Summary: | 碩士 === 國立臺灣師範大學 === 體育學系 === 98 === Purpose: To investigate the difference in energy expenditures of walking and running in single bout long duration exercise (SL), and multiple bouts short duration exercise (MS), in which distances and speeds were equivalent. Methods: Twelve healthy participants (6 men and 6 women, aged 23.3±2.5 yrs, height 169.0±7.0 cm and weight 62.6±13.6 kg) took part in the study. The counter-balanced repeated measure design was adopted, whereby the participants underwent 4 different conditions: 3 bouts of 1 km brisk walk (MSW), 1 bout of 3 km brisk walk (SLW), 3 bouts of 1 km run (MSR), and 1 bout of 3 km run (SLR). Data was analyzed using two-way ANOVA, with alpha set at .05. Results: (1) During the exercise period, energy expenditure for MS (186.3±38.9 kcal) was significantly lower than SL (209.5±45.9 kcal). However, energy expenditure for MS (26.4±10.1 kcal) is higher than SL (11.8±4.7 kcal). This results in an overall lack of difference in the total energy expenditure between the two conditions. (2) There was no significance difference (SL=92.6±35.2 kcal vs MS=88.0±26.8 kcal) in the fat-based energy expenditure. (3) Total energy expenditure, energy expenditure during exercise and fat-based energy expenditure were higher for running than for walking. However, no difference was observed for energy expenditure during the recovery period. (4) In terms of perceived exertion, the results revealed that walking (RPE=14.8±3.0) was significantly higher than running (RPE=12.8±2.5) and SL (RPE=15.8±2.5) was significantly higher than MS (RPE=11.8±1.7). The RPE of MSW was 12.5±1.7. Conclusions: The energy expenditure for brisk walking was not higher than running for the same speed. Brisk walking is an easier form of exercise and is safer, and thus short bouts of brisk walking can be considered a relaxed form of activity. Should weight control via exercise be the aim, it is recommended that people with a shortage of time for exercise can use any short periods for brisk walking in order to develop exercise habits.
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