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00005768-200305001-0170700005768_2003_35_s308_lanew_postmenopausal_5miscellaneous< 20_0_6_0 >Medicine & Science in Sports & Exercise©2003The American College of Sports MedicineVolume 35(5) Supplement 1May 2003p S308WALKING INTENSITY IS NOT A STIMULUS FOR FAT LOSS IN POSTMENOPAUSAL WOMEN[G-15C FREE COMMUNICATIONS/SLIDE EXERCISE PRESCRIPTION AND WEIGHT LOSS]LaNew, J1; Borer, K T.1; Garcia, A W.1; Zakrajsek, J1; Sowers, M11University of Michigan, Ann Arbor, MIExercise can be an effective means of body fat loss, but it is not clear whether its intensity may affect the outcome by influencing: acutely the type of fuel used, the rate of lipid utilization due to increase in aerobic capacity (AC), or other components of energy equation: quantity of food eaten (FI) and levels of general physical activity (PA).PURPOSEto examine the effect of walking intensity on total body fat (TBF) loss, FI, PA, and AC during 15 weeks of training in postmenopausal (PM) women.METHODSPM women (n=88) walked 2.84 mi/day, five days/week at intensities ranging between 88 and 141% of their ventilatory threshold (VT). Training changes (before- after) in AC (from change in VT), TBF (anthropometric (AN): n=88, DEXA: n=25), regional body fat (waist-to hip ratio, W/H, cross-sectional estimates of thigh fat, and abdominal fat), FI (three-day diet diaries), and PA(seven-day questionnaires) were assessed and evaluated as a function of training intensity.RESULTSWalking training resulted in: (1) significant decline in TBF of 784 g by AN (t=4.074, p = 0.0001) and of 870 g (by DEXA; NS: an additional 11 subjects needed for significance); (2) significant increase in AC (10% increase in VT, t=4.719, p = 0.0001); (3) no change in FI (1813 vs 1719 Kcal/day), (4) no change in PA (2752 vs 2831 Kcal/day), (5) no change in regional fat measures, and (6) no correlation between changes in any of the variables and the training intensity.CONCLUSIONSWalking under the conditions of this study could modestly increase AC and reduce TBF, but did not affect regional fat distribution, or quantity of FI and PA, in PM women. None of the changes were influenced by intensity of the walking stimulus. Walking combined with dietary control may be a more effective stimulus for fat loss in PM women.SUPPORTNIH grant M01-RR00042 to UM General Clinical Research Center.WALKING INTENSITY IS NOT A STIMULUS FOR FAT LOSS IN POSTMENOPAUSAL WOMENLaNew, J; Borer, K T.; Garcia, A W.; Zakrajsek, J; Sowers, MG-15C Free Communications/Slide Exercise Prescription and Weight Loss535