Bewegen voor een langer leven*
Uit een analyse van zes studies concluderen wetenschappers dat bewegen belangrijk is om ouder te worden. Informatie van ruim 650.000 mensen die 10 jaar lang gevolgd werden werd onderzocht. Iedere week 75 minuten wandelen zorgt voor 21 maanden langer leven en bij 2,5 uur in de week wordt dat 3,4 jaar. Dit alles ongeacht lichaamsgewicht, geslacht of herkomst.
Leisure Time Physical Activity of Moderate to Vigorous Intensity and Mortality: A Large Pooled Cohort Analysis
Steven C. Moore1*, Alpa V. Patel2, Charles E. Matthews1, Amy Berrington de Gonzalez1, Yikyung Park1, Hormuzd A. Katki1, Martha S. Linet1, Elisabete Weiderpass3,4,5,6, Kala Visvanathan7, Kathy J. Helzlsouer7, Michael Thun2, Susan M. Gapstur2, Patricia Hartge1, I-Min Lee8
1 Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, Maryland, United States of America, 2 Epidemiology Research Program, American Cancer Society, Atlanta, Georgia, United States of America, 3 Department of Medical Epidemiology and Biostatistics, Karolinska Institute, Stockholm, Sweden, 4 Cancer Registry of Norway, Oslo, Norway, 5 Department of Community Medicine, Tromso, Norway, 6 Samfundet Folkhalsan, Helsinki, Finland, 7 Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America, 8 Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
Background
Leisure time physical activity reduces the risk of premature mortality, but the years of life expectancy gained at different levels remains unclear. Our objective was to determine the years of life gained after age 40 associated with various levels of physical activity, both overall and according to body mass index (BMI) groups, in a large pooled analysis.
Methods and Findings
We examined the association of leisure time physical activity with mortality during follow-up in pooled data from six prospective cohort studies in the National Cancer Institute Cohort Consortium, comprising 654,827 individuals, 21–90 y of age. Physical activity was categorized by metabolic equivalent hours per week (MET-h/wk). Life expectancies and years of life gained/lost were calculated using direct adjusted survival curves (for participants 40+ years of age), with 95% confidence intervals (CIs) derived by bootstrap. The study includes a median 10 y of follow-up and 82,465 deaths. A physical activity level of 0.1–3.74 MET-h/wk, equivalent to brisk walking for up to 75 min/wk, was associated with a gain of 1.8 (95% CI: 1.6–2.0) y in life expectancy relative to no leisure time activity (0 MET-h/wk). Higher levels of physical activity were associated with greater gains in life expectancy, with a gain of 4.5 (95% CI: 4.3–4.7) y at the highest level (22.5+ MET-h/wk, equivalent to brisk walking for 450+ min/wk). Substantial gains were also observed in each BMI group. In joint analyses, being active (7.5+ MET-h/wk) and normal weight (BMI 18.5–24.9) was associated with a gain of 7.2 (95% CI: 6.5–7.9) y of life compared to being inactive (0 MET-h/wk) and obese (BMI 35.0+). A limitation was that physical activity and BMI were ascertained by self report.
Conclusions
More leisure time physical activity was associated with longer life expectancy across a range of activity levels and BMI groups.
De studie.
(November 2012)
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