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Heat suit training increases hemoglobin mass in elite cross‐country skiers
PURPOSE: The primary purpose was to test the effect of heat suit training on hemoglobin mass (Hb(mass)) in elite cross‐country (XC) skiers. METHODS: Twenty‐five male XC‐skiers were divided into a group that added 5 × 50 min weekly heat suit training sessions to their regular training (HEAT; n = 13,...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9544462/ https://www.ncbi.nlm.nih.gov/pubmed/35305278 http://dx.doi.org/10.1111/sms.14156 |
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author | Rønnestad, Bent R. Lid, Ole Martin Hansen, Joar Hamarsland, Håvard Mølmen, Knut Sindre Nygaard, Håvard Ellefsen, Stian Hammarström, Daniel Lundby, Carsten |
author_facet | Rønnestad, Bent R. Lid, Ole Martin Hansen, Joar Hamarsland, Håvard Mølmen, Knut Sindre Nygaard, Håvard Ellefsen, Stian Hammarström, Daniel Lundby, Carsten |
author_sort | Rønnestad, Bent R. |
collection | PubMed |
description | PURPOSE: The primary purpose was to test the effect of heat suit training on hemoglobin mass (Hb(mass)) in elite cross‐country (XC) skiers. METHODS: Twenty‐five male XC‐skiers were divided into a group that added 5 × 50 min weekly heat suit training sessions to their regular training (HEAT; n = 13, 23 ± 5 years, 73.9 ± 5.2 kg, 180 ± 6 cm, 76.8 ± 4.6 ml·min(−1)·kg(−1)) or to a control group matched for training volume and intensity distribution (CON; n = 12, 23 ± 4 years, 78.4 ± 5.8 kg, 184 ± 4 cm, 75.2 ± 3.4 ml·min(−1)·kg(−1)) during the five‐week intervention period. Hb(mass), endurance performance and factors determining endurance performance were assessed before and after the intervention. RESULTS: HEAT led to 30 g greater Hb(mass) (95% CI: [8.5, 51.7], p = 0.009) and 157 ml greater red blood cell volume ([29, 285], p = 0.018) post‐intervention, compared to CON when adjusted for baseline values. In contrast, no group differences were observed for changes in work economy, running velocity, and fractional utilization of maximal oxygen uptake (V̇O(2max)) at 4 mmol·L(−1) blood lactate, V̇O(2max) or 15‐min running distance performance trial during the intervention. CONCLUSION: HEAT induced a larger increase in Hb(mass) and red blood cell volume after five weeks with five weekly heat suit training sessions than CON, but with no detectable group differences on physiological determinants of endurance performance or actual endurance performance in elite CX skiers. |
format | Online Article Text |
id | pubmed-9544462 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-95444622022-10-14 Heat suit training increases hemoglobin mass in elite cross‐country skiers Rønnestad, Bent R. Lid, Ole Martin Hansen, Joar Hamarsland, Håvard Mølmen, Knut Sindre Nygaard, Håvard Ellefsen, Stian Hammarström, Daniel Lundby, Carsten Scand J Med Sci Sports Original Articles PURPOSE: The primary purpose was to test the effect of heat suit training on hemoglobin mass (Hb(mass)) in elite cross‐country (XC) skiers. METHODS: Twenty‐five male XC‐skiers were divided into a group that added 5 × 50 min weekly heat suit training sessions to their regular training (HEAT; n = 13, 23 ± 5 years, 73.9 ± 5.2 kg, 180 ± 6 cm, 76.8 ± 4.6 ml·min(−1)·kg(−1)) or to a control group matched for training volume and intensity distribution (CON; n = 12, 23 ± 4 years, 78.4 ± 5.8 kg, 184 ± 4 cm, 75.2 ± 3.4 ml·min(−1)·kg(−1)) during the five‐week intervention period. Hb(mass), endurance performance and factors determining endurance performance were assessed before and after the intervention. RESULTS: HEAT led to 30 g greater Hb(mass) (95% CI: [8.5, 51.7], p = 0.009) and 157 ml greater red blood cell volume ([29, 285], p = 0.018) post‐intervention, compared to CON when adjusted for baseline values. In contrast, no group differences were observed for changes in work economy, running velocity, and fractional utilization of maximal oxygen uptake (V̇O(2max)) at 4 mmol·L(−1) blood lactate, V̇O(2max) or 15‐min running distance performance trial during the intervention. CONCLUSION: HEAT induced a larger increase in Hb(mass) and red blood cell volume after five weeks with five weekly heat suit training sessions than CON, but with no detectable group differences on physiological determinants of endurance performance or actual endurance performance in elite CX skiers. John Wiley and Sons Inc. 2022-03-26 2022-07 /pmc/articles/PMC9544462/ /pubmed/35305278 http://dx.doi.org/10.1111/sms.14156 Text en © 2022 The Authors. Scandinavian Journal of Medicine & Science In Sports published by John Wiley & Sons Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ (https://creativecommons.org/licenses/by-nc-nd/4.0/) License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
spellingShingle | Original Articles Rønnestad, Bent R. Lid, Ole Martin Hansen, Joar Hamarsland, Håvard Mølmen, Knut Sindre Nygaard, Håvard Ellefsen, Stian Hammarström, Daniel Lundby, Carsten Heat suit training increases hemoglobin mass in elite cross‐country skiers |
title | Heat suit training increases hemoglobin mass in elite cross‐country skiers |
title_full | Heat suit training increases hemoglobin mass in elite cross‐country skiers |
title_fullStr | Heat suit training increases hemoglobin mass in elite cross‐country skiers |
title_full_unstemmed | Heat suit training increases hemoglobin mass in elite cross‐country skiers |
title_short | Heat suit training increases hemoglobin mass in elite cross‐country skiers |
title_sort | heat suit training increases hemoglobin mass in elite cross‐country skiers |
topic | Original Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9544462/ https://www.ncbi.nlm.nih.gov/pubmed/35305278 http://dx.doi.org/10.1111/sms.14156 |
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