Dataset Information

Resting and exercise energy metabolism in weight-reduced adults with severe obesity.

ABSTRACT:

Objective

To determine effects of physical activity (PA) with diet-induced weight loss on energy metabolism in adults with severe obesity.

Methods

Adults with severe obesity (n = 11) were studied across 6 months of intervention, then compared with controls with less severe obesity (n = 7) or normal weight (n = 9). Indirect calorimetry measured energy metabolism during exercise and rest. Markers of muscle oxidation were determined by immunohistochemistry. Data were presented as medians.

Results

The intervention induced 7% weight loss (P = 0.001) and increased vigorous PA by 24 min/wk (P = 0.02). During exercise, energy expenditure decreased, efficiency increased (P ≤ 0.03), and fatty acid oxidation (FAO) did not change. Succinate dehydrogenase increased (P = 0.001), but fiber type remained the same. Post-intervention subjects' resting metabolism remained similar to controls. Efficiency was lower in post-intervention subjects compared with normal-weight controls exercising at 25 W (P ≤ 0.002) and compared with all controls exercising at 60% VO2peak (P ≤ 0.019). Resting and exercise FAO of post-intervention subjects remained similar to adults with less severe obesity. Succinate dehydrogenase and fiber type were similar across all body weight statuses.

Conclusions

While metabolic adaptations to PA during weight loss occur in adults with severe obesity, FAO does not change. Resulting FAO during rest and exercise remains similar to adults with less severe obesity.

SUBMITTER: Hames KC

PROVIDER: S-EPMC6455966 | biostudies-literature | 2016 Jun

REPOSITORIES: biostudies-literature

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Publications

Resting and exercise energy metabolism in weight-reduced adults with severe obesity.

Hames Kazanna C KC Coen Paul M PM King Wendy C WC Anthony Steven J SJ Stefanovic-Racic Maja M Toledo Frederico G S FG Lowery Jolene B JB Helbling Nicole L NL Dubé John J JJ DeLany James P JP Jakicic John M JM Goodpaster Bret H BH

Obesity (Silver Spring, Md.) 20160430 6

<h4>Objective</h4>To determine effects of physical activity (PA) with diet-induced weight loss on energy metabolism in adults with severe obesity.<h4>Methods</h4>Adults with severe obesity (n = 11) were studied across 6 months of intervention, then compared with controls with less severe obesity (n = 7) or normal weight (n = 9). Indirect calorimetry measured energy metabolism during exercise and rest. Markers of muscle oxidation were determined by immunohistochemistry. Data were presented as med ...[more]

PMID: 27129892

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Dataset Information

Resting and exercise energy metabolism in weight-reduced adults with severe obesity.

Objective

Methods

Results

Conclusions

Publications

Resting and exercise energy metabolism in weight-reduced adults with severe obesity.

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