Muscle strength and physical activity are associated with self-rated health in an adult Danish population

Objective. To describe associations of muscle strength, physical activity and self-rated health. Method. Isometric muscle strength by maximal handgrip strength (HGS) or muscle strength by 30 s repeated chair stand test (30 s-CS) was combined with leisure time physical activity. Using logistic regression odds ratio was calculated for good self-rated health according to the combined associations among 16,539 participants (59.7% women), mean age 51.9 (SD: 13.8) years, from a cross-sectional study in Denmark 2007-2008. Results. Good self-rated health was positively associated with higher levels of physical activity and greater muscle strength. Regarding HGS the highest OR for good self-rated health was in the moderate/vigorous physically active participants with high HGS (OR = 6.84,95% CI: 4.85-9.65 and OR = 7.34,95% CI: 5.42-9.96 for men and women, respectively). Similarly the highest OR for good self-rated health was in the moderate/vigorous physically active participants with high scores in the 30 s-CS test (6.06, 95% CI: 4.32-8.50 and 13.38, 95% CI: 9.59-18.67 for men and women, respectively). The reference groups were sedentary participants with low strength (HGS or 30 s-CS). Conclusion. The combined score for physical activity level with either HGS or 30 s-CS was strongly positively associated with self-related health. Crown Copyright (C) 2013 Published by Elsevier Inc All rights reserved.