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Stand up for health-avoiding sedentary behaviour might lengthen your telomeres: secondary outcomes from a physical activity RCT in older people.
Swedish School of Sport and Health Sciences, GIH, Department of Sport and Health Sciences, Åstrand Laboratory of Work Physiology, Björn Ekblom's and Mats Börjesson's research group.ORCID iD: 0000-0002-3185-9702
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2014 (English)In: British Journal of Sports Medicine, ISSN 0306-3674, E-ISSN 1473-0480, Vol. 48, no 19, 1407-9 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Telomere length has been associated with a healthy lifestyle and longevity. However, the effect of increased physical activity on telomere length is still unknown. Therefore, the aim was to study the relationship between changes in physical activity level and sedentary behaviour and changes in telomere length.

METHODS: Telomere length was measured in blood cells 6 months apart in 49, 68-year-old, sedentary, overweight individuals taking part in a randomised controlled physical activity intervention trial. The intervention group received individualised physical activity on prescription. Physical activity was measured with a 7-day diary, questionnaires and a pedometer. Sitting time was measured with the short version of The International Physical Activity Questionnaire.

RESULTS: Time spent exercising as well as steps per day increased significantly in the intervention group. Reported sitting time decreased in both groups. No significant associations between changes in steps per day and changes in telomere length were noted. In the intervention group, there was a negative correlation between changes in time spent exercising and changes in telomere length (rho=-0.39, p=0.07). On the other hand, in the intervention group, telomere lengthening was significantly associated with reduced sitting time (rho=-0.68, p=0.02).

CONCLUSIONS: Reduced sitting time was associated with telomere lengthening in blood cells in sedentary, overweight 68-year-old individuals participating in a 6-month physical activity intervention trial.

Place, publisher, year, edition, pages
2014. Vol. 48, no 19, 1407-9 p.
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Health Sciences
Research subject
Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-3442DOI: 10.1136/bjsports-2013-093342PubMedID: 25185586OAI: oai:DiVA.org:gih-3442DiVA: diva2:748544
Available from: 2014-09-19 Created: 2014-09-17 Last updated: 2014-11-05Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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