Exercise mode and gender comparisons of energy expenditure at self- selected intensities
Kravitz, Len, Robergs, Robert A., Heyward, Vivian H., Wagner, Dale R., & Powers, Kevin (1997) Exercise mode and gender comparisons of energy expenditure at self- selected intensities. Medicine and Science in Sports and Exercise, 29(8), pp. 1028-1035.
The purpose of this study was to compare oxygen consumption(˙VO2) and energy expenditure after 20 min of self-selected submaximal exercise for four modes of exercise. Eighteen subjects (9 male and 9 female) first completed a test of ˙VO2max during treadmill running. On separate days, subjects then completed 20 min submaximal treadmill running (TR), simulated cross-country skiing (XC), cycle ergometry (CE), and aerobic riding (AR) exercise. Total ˙VO2 and energy expenditure were significantly higher for TR than all other modes for both males and females (43.6 ± 10.4, 39.1 ± 9.7, 36.1 ± 7.6, 28.4± 6.1 LO2, for TR, XC, CE, and AR, respectively, P< 0.0001). For males and females, heart rate was similar during TR and XC and lower during CE and AR (154.8 ± 14.2, 152.6 ± 13.1, 143.4± 14.9, and 126.2 ± 12.0 beats·min-1 for TR, XC, CE, and AR, respectively, P < 0.0001). Compared with females, males had significantly greater ˙VO2 (P < 0.005) and energy expenditure (P < 0.004), while females had higher heart rates (P < 0.003). Ratings of perceived exertion (RPE) were not different between TR, XC, and CE, but were significantly lower during AR (13.4± 1.3, 13.6 ± 0.8, 13.2 ± 0.9, and 12.6 ± 1.0 for TR, XC, CE, and AR, respectively, P < 0.003). TR elicited the greatest ˙VO2 and energy expenditure during self-selected exercise despite an RPE similar to XC and CE. Therefore, treadmill exercise may be the modality of choice for individuals seeking to improve cardiorespiratory endurance and expend a larger number of kjoules.
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|Item Type:||Journal Article|
|Keywords:||adult; aerobic capacity; article; bicycle ergometry; controlled study; energy expenditure; exercise; female; gender; human; human experiment; male; oxygen consumption; skiing; treadmill exercise, Adult; Energy Metabolism; Exercise; Exercise Test; Female; Heart Rate; Humans; Male; Oxygen Consumption; Physical Endurance; Sex Factors|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
|Deposited On:||19 Jul 2016 01:45|
|Last Modified:||19 Jul 2016 01:46|
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