Exercise in combination with diet i...

Exercise in combination with diet improves short-term weight los and helps maintain weight los throughout the long term, but the optimal exercise regimen for long-term weight los has not been established. existing recommendations range from 30 to 60 minutes of moderate-intensity exercise in succession most days, depending on whether the goal is to improve health or to superintendence weight. There are no data from long-term clinical trials to determine whether exercise duration or intensity have a greater impact forward body weight. In this consideration Jakicic and colleagues examine the differential meaning of moderate versus high duration and moderate versus vigorous exercise in succession weight loss and cardiorespiratory fitness following 12 month of treatment in overweight women

Healthy, sedentary, nonpregnant women aged 21 to 45 years with a material part mass index (BMI) between 27 and 40 were enlisted in the study. All participants were instructed to come next a low-calorie, low-fat diet, reinforced according to a behavioral weight loss intervention involving clump meeting and periodic telephone calls. Participants were randomized to united of the following four exercise groups: (1) vigorous intensity/high duration; (2) moderate intensity/ high duration; (3) moderate intensity/ moderate duration; or (4) vigorous intensity/ moderate duration. results based on BMI were assessed at baseline and at six and 12 month A graded exercise treadmill experiment assessed cardiorespiratory fitness. An exercise log contributed to the analysis.

In the 184 women who complet the inquiry weight loss was significant in all clusters but there was no significant drift of either exercise duration or exercise intensity onward changes in body weight between collections In kilograms, the mean weight los at 12 month was 89 (vigorous intensity/high duration), 82 (moderate intensity/high duration), 63 (moderate intensity/ moderate duration), and 70 (vigorous intensity/moderate duration); (P <001) Cardiorespiratory fitness increased significantly in all clumps but there were no significant imports of exercise duration or intensity forward changes in cardiorespiratory fitness measures at the finis of the study period.

Post-hoc analysis showed that when participants were clustered on the basis of the amount of physical activity that was at least moderate intensity, those with 200 minutes by week of exercise lost significantly more weight than those with exercise of les than 150 minutes for week. A similar difference held actual for cardiorespiratory fitness. Neither weight los nor cardiorespiratory fitness in the 150 minute by week exercise group differed from those of the other groups

In this meditation which compared differences in exercise duration (moderate versus high) and intensity (moderate versus vigorous), higher amounts of exercise deductioned in a 10 percent weight los compared with less amounts of exercise duration and intensity that issueed in an 8 percent weight los a nonsignificant difference. These findings, which assume a concomitant weight-reduction diet, intimate that working toward the Institute of Medicine's commended goal of 60 minutes of exercise by day may result in optimal weight reduction and weight los maintenance.

Jakicic JM et al. meaning of exercise duration and intensity forward weight loss in overweight, sedentary women A randomized trial. JAMA September 10 2003;290:1323-30

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