Physical activity in adulthood : genes and mortality
Karvinen, S., Waller, K., Silvennoinen, M., Koch, L. G., Britton, S. L., Kaprio, J., Kainulainen, H., & Kujala, U. (2015). Physical activity in adulthood : genes and mortality. Scientific Reports, 5, Article 18259. https://doi.org/10.1038/srep18259
Published inScientific Reports
© the Authors 2015. Published by Nature Publishing Group. This work is licensed under a Creative Commons Attribution 4.0 International License.
Observational studies report a strong inverse relationship between leisure-time physical activity and allcause mortality. Despite suggestive evidence from population-based associations, scientists have not been able to show a beneficial effect of physical activity on the risk of death in controlled intervention studies among individuals who have been healthy at baseline. On the other hand, high cardiorespiratory fitness is known to be a strong predictor of reduced mortality, even more robust than physical activity level itself. Here, in both animals and/or human twins, we show that the same genetic factors influence physical activity levels, cardiorespiratory fitness, and risk of death. Previous observational follow-up studies in humans suggest that increasing fitness through physical activity levels could prolong life; however, our controlled interventional study with laboratory rats bred for low and high intrinsic fitness contrast with these findings. Also, we find no evidence for the suggested association using pairwise analysis among monozygotic twin pairs who are discordant in their physical activity levels. Based on both our animal and human findings, we propose that genetic pleiotropy might partly explain the frequently observed associations between high baseline physical activity and later reduced mortality in humans. ...
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Except where otherwise noted, this item's license is described as © the Authors 2015. Published by Nature Publishing Group. This work is licensed under a Creative Commons Attribution 4.0 International License.
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