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Skeletal muscle telomere length in healthy, experienced, endurance runners.
University of Cape Town.
Institut de Myologie, INSERM, Paris.
Institut de Myologie, INSERM, Paris.
Umeå University, Faculty of Medicine, Department of Integrative Medical Biology (IMB), Anatomy.
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2010 (English)In: European journal of applied physiology, ISSN 1439-6327, Vol. 109, no 2, 323-330 p.Article in journal (Refereed) Published
Abstract [en]

Measuring the DNA telomere length of skeletal muscle in experienced endurance runners may contribute to our understanding of the effects of chronic exposure to endurance exercise on skeletal muscle. This study compared the minimum terminal restriction fragment (TRF) length in the vastus lateralis muscle of 18 experienced endurance runners (mean age: 42 +/- 7 years) to those of 19 sedentary individuals (mean age: 39 +/- 10 years). The runners had covered almost 50,000 km in training and racing over 15 years. Minimum TRF lengths measured in the muscle of both groups were similar (P = 0.805) and within the normal range. Minimum TRF length in the runners, however, was inversely related to their years spent running (r = -0.63, P = 0.007) and hours spent training (r = -0.52, P = 0.035). Therefore, since exposure to endurance running may influence minimum TRF length, and by implication, the proliferative potential of the satellite cells, chronic endurance running may be seen as a stressor to skeletal muscle.

Place, publisher, year, edition, pages
2010. Vol. 109, no 2, 323-330 p.
Keyword [en]
Endurance exercise, Chronic training and racing, Skeletal muscle DNA telomere length
National Category
Medical and Health Sciences
Research subject
URN: urn:nbn:se:umu:diva-32008DOI: 10.1007/s00421-010-1353-6ISI: 000277177000019PubMedID: 20101406OAI: diva2:301359
Available from: 2010-03-03 Created: 2010-02-26 Last updated: 2013-11-08Bibliographically approved

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