Key result
Overweight and obesity linked to ~18% lower relative MVC increases after resistance training versus normal weight.
Why the study?
Overweight and obesity cause musculoskeletal impairments that limit exercise capacity, but differences in muscle strength and size response to resistance training by BMI are unclear.
Does the muscle strength and size response to resistance training differ between overweight/obese and normal weight adults?
Population
687 young adults including 449 normal weight and 238 overweight and obese men and women
Comparison
Overweight and obese vs normal weight adults undergoing resistance training
Design
Cohort study
Follow-up
12 weeks
Authors
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May indicate attenuated relative strength gains with RT in young OW adults; leaves open whether BMI modifies adaptations across populations or training durations.
Cohort (n=687)
Does the muscle strength and size response to resistance training differ between overweight/obese and normal weight adults?
Absolute Event Rate: 17.4% vs 21.2%
p-value: p=<0.05
Short-term relative and allometric muscle strength gains in response to resistance training may be attenuated in overweight and obese adults compared to normal weight adults.
Pescatello et al. (2007) conducted a cohort in Overweight and obesity (n=687). Overweight and obesity vs. Normal weight was evaluated on Relative maximum voluntary contraction (MVC) increase (p=<0.05). Following 12 weeks of resistance training, overweight and obese adults had significantly lower relative increases in maximum voluntary contraction (17.4% vs 21.2%, p<0.05) than normal weight adults.
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