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Physical activity and mortality: is the association explained by genetic selection?
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för kirurgiska vetenskaper, Ortopedi.
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2007 (Engelska)Ingår i: American Journal of Epidemiology, ISSN 0002-9262, E-ISSN 1476-6256, Vol. 166, nr 3, s. 255-259Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Public health recommendations promote physical activity to improve health and longevity. Recent data suggest that the association between physical activity and mortality may be due to genetic selection. Using data on twins, the authors investigated whether genetic selection explains the association between physical activity and mortality. Data were based on a postal questionnaire answered by 13,109 Swedish twin pairs in 1972. The national Cause of Death Register was used for information about all-cause mortality (n=1,800) and cardiovascular disease mortality (n=638) during 1975-2004. The risk of death was reduced by 34% for men (relative risk=0.64, 95% confidence interval: 0.50, 0.83) and by 25% for women (relative risk=0.75, 95% confidence interval: 0.50, 1.14) reporting high physical activity levels. Within-pair comparisons of monozygotic twins showed that, compared with their less active co-twin, the more active twin had a 20% (odds ratio=0.80, 95% confidence interval: 0.65, 0.99) reduced risk of all-cause mortality and a 32% (odds ratio=0.68, 95% confidence interval: 0.49, 0.95) reduced risk of cardiovascular disease mortality. Results indicate that physical activity is associated with a reduced risk of mortality not due to genetic selection. This finding supports a causal link between physical activity and mortality.

Ort, förlag, år, upplaga, sidor
2007. Vol. 166, nr 3, s. 255-259
Nyckelord [en]
Adult, Cardiovascular Diseases/mortality, Cause of Death, Female, Humans, Longevity/*genetics, Male, Mortality, Motor Activity/genetics, Odds Ratio, Questionnaires, Registries, Risk Assessment, Sex Distribution, Sweden/epidemiology, Twins/*genetics, Twins; Dizygotic/genetics, Twins; Monozygotic/genetics
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
URN: urn:nbn:se:uu:diva-14807DOI: 10.1093/aje/kwm132ISI: 000248374500003PubMedID: 17493950OAI: oai:DiVA.org:uu-14807DiVA, id: diva2:42578
Tillgänglig från: 2008-01-31 Skapad: 2008-01-31 Senast uppdaterad: 2017-12-11Bibliografiskt granskad

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Michaëlsson, Karl

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