Maynard, Scott2; Keijzers, Guido3; Hansen, A-M4; Osler, Merete5; Molbo, Drude6; Bendix, Laila7; Møller, P4; Loft, S4; Moreno-Villanueva, M8; Bürkle, A8; Hvitby, C P11; Schurman, S H9; Stevnsner, T11; Rasmussen, L J10; Avlund, K10; Bohr, V A10
1 Department of Molecular Biology and Genetics - Genome stability and technology, Department of Molecular Biology and Genetics, Science and Technology, Aarhus University2 Molecular Aging Program3 Afdeling I4 Department of Public Health, University of Copenhagen5 Dansk Center for Aldringsforskning6 Afdeling for Social Medicin7 Epidemiologi, Biostatistik og Biodemografi8 Molecular Toxicology Group, Department of Biology, University of Konstanz9 Clinical Research Program, National Institute of Environmental Health Sciences, National Institutes of Health10 Center for Healthy Aging, University of Copenhagen11 Department of Molecular Biology and Genetics - Genome stability and technology, Department of Molecular Biology and Genetics, Science and Technology, Aarhus University
AIM: To examine associations of DNA damage, cardiovascular risk factors and physical performance with vitality, in middle-aged men. We also sought to elucidate underlying factors of physical performance by comparing physical performance parameters to DNA damage parameters and cardiovascular risk factors. METHODS: We studied 2487 participants from the Metropolit cohort of 11 532 men born in 1953 in the Copenhagen Metropolitan area. The vitality level was estimated using the SF-36 vitality scale. Cardiovascular risk factors were determined by body mass index (BMI), and haematological biochemistry tests obtained from non-fasting participants. DNA damage parameters were measured in peripheral blood mononuclear cells (PBMCs) from as many participants as possible from a representative subset of 207 participants. RESULTS: Vitality was inversely associated with spontaneous DNA breaks (measured by comet assay) (P = 0.046) and BMI (P = 0.002), and positively associated with all of the physical performance parameters (all P < 0.001). Also, we found several associations between physical performance parameters and cardiovascular risk factors. In addition, the load of short telomeres was inversely associated with maximum jump force (P = 0.018), with lowered significance after exclusion of either arthritis sufferers (P = 0.035) or smokers (P = 0.031). CONCLUSION: Here, we show that self-reported vitality is associated with DNA breaks, BMI and objective (measured) physical performance in a cohort of middle-aged men. Several other associations in this study verify clinical observations in medical practice. In addition, the load of short telomeres may be linked to peak performance in certain musculoskeletal activities.
Acta Physiologica (print), 2015, Vol 213, Issue 1, p. 156-170