Abstract
1343 The Surgeon General's Report on Physical Activity and Health recommends expending 200 kcals “on most if not all days of the week” (1200 to 1400 kcals/wk) as a minimum quantity of exercise energy expenditure (EE) required to obtain health benefits. The ACSM recommends expending a minimum of 1000 kcals/wk to receive fitness benefits. The purpose of this study was to determine the effect of EE above and below 1200 kcals/wk on health/fitness benefits. Nineteen previously sedentary men and women (47 yrs.±12), with at least one coronary risk factor completed the 22-32 week study, exercising ≥ 2 days/wk. Subjects self selected the amount of EE, then were placed into groups above 1200 kcals/wk or below 1100 kcals/wk for analysis. Results of the pre/ post training blood pressure, blood lipids, body composition and VO2max measures include: TableTableThere was a similar training main effect showing adaptations in SBP and HDL. However, the group above 1200 kcals EE had more improvement in BMI and VO2max following the training program. In conclusion, previously at risk, sedentary individuals exercise training ≥2 days/ wk can receive health/fitness benefits. However those expending > 1200 kcals will receive a greater benefit in body composition and cardiorespiratory fitness.
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