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Muscle Strength, Physical Activity, and Functional Limitations in Older Adults with Central Obesity


Affiliations
1 Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, P.O. Box 3119, Durham, NC 27710, United States
2 Department of Medicine, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, 1 Medical Center Drive, Lebanon, NH 03756, United States
3 Department of Epidemiology and Biostatistics, School of Public Health, University at Albany (SUNY), One University Place, Albany, NY 12203, United States
 

Background: Obesity andmuscle weakness are independently associated with increased risk of physical and functional impairment in older adults. It is unknown whether physical activity (PA) and muscle strength combined provide added protection against functional impairment. This study examines the association between muscle strength, PA, and functional outcomes in older adults with central obesity. Methods: Prevalence and odds of physical (PL),ADL, and IADL limitation were calculated for 6,388 community dwelling adults aged ≥ 60 with central obesity. Individuals were stratified by sex-specific hand grip tertiles and PA. Logistic models were adjusted for age, education, comorbidities, and body-mass index and weighted. Results: Overall prevalence of PL and ADL and IADL limitations were progressively lower by grip category. Within grip categories, prevalence was lower for individuals who were active than those who were inactive. Adjusted models showed significantly lower odds of PL OR 0.42 [0.31, 0.56]; ADL OR 0.60 [0.43, 0.84], and IADL OR 0.46 [0.35, 0.61] for those in the highest grip strength category as compared to those in the lowest grip category. Conclusion: Improving grip strength in obese elders who are not able to engage in traditional exercise is important for reducing odds of physical and functional impairment.
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  • Muscle Strength, Physical Activity, and Functional Limitations in Older Adults with Central Obesity

Abstract Views: 115  |  PDF Views: 0

Authors

Cassandra M. Germain
Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, P.O. Box 3119, Durham, NC 27710, United States
John A. Batsis
Department of Medicine, Geisel School of Medicine at Dartmouth, Dartmouth-Hitchcock Medical Center, 1 Medical Center Drive, Lebanon, NH 03756, United States
Elizabeth Vasquez
Department of Epidemiology and Biostatistics, School of Public Health, University at Albany (SUNY), One University Place, Albany, NY 12203, United States
Douglas R. McQuoid
Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, P.O. Box 3119, Durham, NC 27710, United States

Abstract


Background: Obesity andmuscle weakness are independently associated with increased risk of physical and functional impairment in older adults. It is unknown whether physical activity (PA) and muscle strength combined provide added protection against functional impairment. This study examines the association between muscle strength, PA, and functional outcomes in older adults with central obesity. Methods: Prevalence and odds of physical (PL),ADL, and IADL limitation were calculated for 6,388 community dwelling adults aged ≥ 60 with central obesity. Individuals were stratified by sex-specific hand grip tertiles and PA. Logistic models were adjusted for age, education, comorbidities, and body-mass index and weighted. Results: Overall prevalence of PL and ADL and IADL limitations were progressively lower by grip category. Within grip categories, prevalence was lower for individuals who were active than those who were inactive. Adjusted models showed significantly lower odds of PL OR 0.42 [0.31, 0.56]; ADL OR 0.60 [0.43, 0.84], and IADL OR 0.46 [0.35, 0.61] for those in the highest grip strength category as compared to those in the lowest grip category. Conclusion: Improving grip strength in obese elders who are not able to engage in traditional exercise is important for reducing odds of physical and functional impairment.