Changes in single skinfold thickness in 100 km ultramarathoners
BACKGROUND: Changes in single skinfold thickness and body fat have been investigated in ultraswimmers and ultracyclists, but not in ultrarunners. The present study investigated the changes in single skinfold thickness during a 100 km ultramarathon. METHODS: Firstly, we investigated associations betw...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Dove Medical Press
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3781909/ https://www.ncbi.nlm.nih.gov/pubmed/24198597 http://dx.doi.org/10.2147/OAJSM.S37035 |
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author | Knechtle, Beat Baumgartner, Sabrina Knechtle, Patrizia Rüst, Christoph Alexander Rosemann, Thomas Bescós, Raúl |
author_facet | Knechtle, Beat Baumgartner, Sabrina Knechtle, Patrizia Rüst, Christoph Alexander Rosemann, Thomas Bescós, Raúl |
author_sort | Knechtle, Beat |
collection | PubMed |
description | BACKGROUND: Changes in single skinfold thickness and body fat have been investigated in ultraswimmers and ultracyclists, but not in ultrarunners. The present study investigated the changes in single skinfold thickness during a 100 km ultramarathon. METHODS: Firstly, we investigated associations between prerace preparation and prerace body composition and, secondly, changes in single skinfold thickness during a 100 km ultramarathon in 219 male ultramarathoners. Changes in fat mass and skeletal muscle were estimated using anthropometric methods. RESULTS: Kilometers run weekly prerace and running speed during training were negatively associated with all skinfold thicknesses (P < 0.05) except for the front thigh skinfold. During the race, skinfold thickness at the pectoral (−0.1%), suprailiac (−1.8%), and calf (−0.8%) sites decreased (P < 0.05). The subjects lost 1.9 ± 1.4 kg of body mass (P < 0.001), 0.7 ± 1.0 kg of estimated skeletal muscle mass (P < 0.001), and 0.2 ± 1.3 kg of estimated fat mass (P < 0.05). The decrease in body mass was positively related to the decrease in both estimated skeletal muscle mass (r = 0.21, P = 0.0017) and estimated fat mass (r = 0.41, P < 0.0001). CONCLUSION: Firstly, prerace fat mass and prerace skinfold thickness were associated with both volume and speed in running training. Secondly, during the ultramarathon, skinfold thickness decreased at the pectoral, suprailiac, and calf sites, but not at the thigh site. Percent decreases in skinfold thickness for ultrarunners was lower than the percent decreases in skinfold thickness reported for ultraswimmers and ultracyclists. |
format | Online Article Text |
id | pubmed-3781909 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Dove Medical Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-37819092013-11-06 Changes in single skinfold thickness in 100 km ultramarathoners Knechtle, Beat Baumgartner, Sabrina Knechtle, Patrizia Rüst, Christoph Alexander Rosemann, Thomas Bescós, Raúl Open Access J Sports Med Original Research BACKGROUND: Changes in single skinfold thickness and body fat have been investigated in ultraswimmers and ultracyclists, but not in ultrarunners. The present study investigated the changes in single skinfold thickness during a 100 km ultramarathon. METHODS: Firstly, we investigated associations between prerace preparation and prerace body composition and, secondly, changes in single skinfold thickness during a 100 km ultramarathon in 219 male ultramarathoners. Changes in fat mass and skeletal muscle were estimated using anthropometric methods. RESULTS: Kilometers run weekly prerace and running speed during training were negatively associated with all skinfold thicknesses (P < 0.05) except for the front thigh skinfold. During the race, skinfold thickness at the pectoral (−0.1%), suprailiac (−1.8%), and calf (−0.8%) sites decreased (P < 0.05). The subjects lost 1.9 ± 1.4 kg of body mass (P < 0.001), 0.7 ± 1.0 kg of estimated skeletal muscle mass (P < 0.001), and 0.2 ± 1.3 kg of estimated fat mass (P < 0.05). The decrease in body mass was positively related to the decrease in both estimated skeletal muscle mass (r = 0.21, P = 0.0017) and estimated fat mass (r = 0.41, P < 0.0001). CONCLUSION: Firstly, prerace fat mass and prerace skinfold thickness were associated with both volume and speed in running training. Secondly, during the ultramarathon, skinfold thickness decreased at the pectoral, suprailiac, and calf sites, but not at the thigh site. Percent decreases in skinfold thickness for ultrarunners was lower than the percent decreases in skinfold thickness reported for ultraswimmers and ultracyclists. Dove Medical Press 2012-10-25 /pmc/articles/PMC3781909/ /pubmed/24198597 http://dx.doi.org/10.2147/OAJSM.S37035 Text en © 2012 Knechtle et al, publisher and licensee Dove Medical Press Ltd This is an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited. |
spellingShingle | Original Research Knechtle, Beat Baumgartner, Sabrina Knechtle, Patrizia Rüst, Christoph Alexander Rosemann, Thomas Bescós, Raúl Changes in single skinfold thickness in 100 km ultramarathoners |
title | Changes in single skinfold thickness in 100 km ultramarathoners |
title_full | Changes in single skinfold thickness in 100 km ultramarathoners |
title_fullStr | Changes in single skinfold thickness in 100 km ultramarathoners |
title_full_unstemmed | Changes in single skinfold thickness in 100 km ultramarathoners |
title_short | Changes in single skinfold thickness in 100 km ultramarathoners |
title_sort | changes in single skinfold thickness in 100 km ultramarathoners |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3781909/ https://www.ncbi.nlm.nih.gov/pubmed/24198597 http://dx.doi.org/10.2147/OAJSM.S37035 |
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