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An ironman triathlon does not lead to a change in body mass in female triathletes


Knechtle, B; Wirth, A; Baumann, B; Knechtle, P; Kohler, G; Rosemann, T; Senn, O (2010). An ironman triathlon does not lead to a change in body mass in female triathletes. Research in Sports Medicine, 18(2):115-126.

Abstract

In 16 female nonprofessional Ironman triathletes, body mass, percent body fat, and skeletal muscle mass were determined before and after an Ironman race in order to detect changes. Selected hematological and urinary variables as well as percent total body water were measured in order to quantify a change in hydration status. Body mass, skeletal muscle mass, percent body fat, and percent body water did not change (p > 0.05). Plasma volume increased significantly by 8.1(13.7) % (p < 0.05). The significant increase in plasma volume, plasma urea concentration, and urinary specific gravity after the race was associated with a significant fall in hematocrit and plasma sodium concentration (p < 0.05). In contrast to studies of male Ironman triathletes, we could not detect a decrease in body mass in female Ironman triathletes. The statistically insignificant loss of 0.6 kg in body mass was smaller than reported in studies of male athletes.

Abstract

In 16 female nonprofessional Ironman triathletes, body mass, percent body fat, and skeletal muscle mass were determined before and after an Ironman race in order to detect changes. Selected hematological and urinary variables as well as percent total body water were measured in order to quantify a change in hydration status. Body mass, skeletal muscle mass, percent body fat, and percent body water did not change (p > 0.05). Plasma volume increased significantly by 8.1(13.7) % (p < 0.05). The significant increase in plasma volume, plasma urea concentration, and urinary specific gravity after the race was associated with a significant fall in hematocrit and plasma sodium concentration (p < 0.05). In contrast to studies of male Ironman triathletes, we could not detect a decrease in body mass in female Ironman triathletes. The statistically insignificant loss of 0.6 kg in body mass was smaller than reported in studies of male athletes.

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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
Scopus Subject Areas:Health Sciences > Orthopedics and Sports Medicine
Health Sciences > Physical Therapy, Sports Therapy and Rehabilitation
Uncontrolled Keywords:Physical Therapy, Sports Therapy and Rehabilitation, Orthopedics and Sports Medicine
Language:English
Date:2010
Deposited On:16 Apr 2010 12:22
Last Modified:24 Aug 2021 18:42
Publisher:Taylor & Francis
ISSN:1543-8627
OA Status:Closed
Publisher DOI:https://doi.org/10.1080/15438621003627059
PubMed ID:20397114

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