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An ultratriathlon leads to a decrease of body fat and skeletal muscle mass - the triple iron triathlon Austria 2006


Knechtle, B; Duff, B; Amtmann, G; Kohler, G (2008). An ultratriathlon leads to a decrease of body fat and skeletal muscle mass - the triple iron triathlon Austria 2006. Research in Sports Medicine, 16(2):97-110.

Abstract

We investigated the effects on body composition in triathletes at the Triple Iron Triathlon Austria in 2006, where athletes had to perform 11.6 km swimming, 540 km cycling, and 126.6 km running within 58 h. In 16 male triathletes, body mass (BM), skinfold thicknesses, and circumferences of extremities were measured before and after the competition in order to calculate body mass index (BMI), percent body fat (%BF), fat mass (FM), and skeletal muscle mass (SM). Body mass, BMI, %BF, FM, and SM decreased statistically significantly (p < 0.01). The loss of BM is associated neither with the decrease of %BF (p > 0.05, r(2)= 0.00) nor with the decrease of SM (p> 0.05, r(2)= 0.06). There is no association between total race time and the loss of BM (r(2) = 0.06), %BF (r(2) = 0.10), and SM (r2 = 0.11). No significant correlation (p > 0.05, r(2)= 0.43) was found between the initial SM and loss of SM.

We investigated the effects on body composition in triathletes at the Triple Iron Triathlon Austria in 2006, where athletes had to perform 11.6 km swimming, 540 km cycling, and 126.6 km running within 58 h. In 16 male triathletes, body mass (BM), skinfold thicknesses, and circumferences of extremities were measured before and after the competition in order to calculate body mass index (BMI), percent body fat (%BF), fat mass (FM), and skeletal muscle mass (SM). Body mass, BMI, %BF, FM, and SM decreased statistically significantly (p < 0.01). The loss of BM is associated neither with the decrease of %BF (p > 0.05, r(2)= 0.00) nor with the decrease of SM (p> 0.05, r(2)= 0.06). There is no association between total race time and the loss of BM (r(2) = 0.06), %BF (r(2) = 0.10), and SM (r2 = 0.11). No significant correlation (p > 0.05, r(2)= 0.43) was found between the initial SM and loss of SM.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Institute of General Practice
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2008
Deposited On:30 Jan 2009 10:04
Last Modified:05 Apr 2016 12:55
Publisher:Taylor & Francis
ISSN:1543-8627
Publisher DOI:10.1080/15438620701878881
PubMed ID:18569944
Permanent URL: http://doi.org/10.5167/uzh-12147

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