• Scott J Dankel, Jeremy P Loenneke, and Paul D Loprinzi.
• Kevser Ermin Applied Physiology Laboratory, Department of Health, Exercise Science, and Recreation Management, The University of Mississippi, University, MS, USA.
• Prev Med. 2015 Dec 1; 81: 54-7.

ObjectiveParticipating in muscle-strengthening activities (MSA) has been shown to reduce the risks associated with many individual chronic diseases; however, the impact of MSA on multimorbidity remains unexplored. Therefore, the purpose of this study was to determine the association between MSA and multimorbidity.MethodsData from the 2003-2006 NHANES were used including 4587 adults (≥20 years old). Participation in MSA was defined as self-reported involvement within the last 30 days. Multimorbidity was deemed as having ≥2 of the 14 chronic diseases.ResultsAfter adjustments (including accelerometry-assessed physical activity), individuals participating in MSA had a 26% reduced odds of having multimorbidity (OR=0.74; 95% CI: 0.62-0.88; p=0.001) and each 2 day/week increase in MSA was associated with an 8% reduced odds of being multimorbid (OR=0.92; 95% CI: 0.84-1.00; p=0.05).ConclusionIndependent of accelerometry-assessed physical activity, the participation in MSA may reduce the odds of being multimorbid, with evidence of a dose-response relationship.Copyright © 2015 Elsevier Inc. All rights reserved.

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