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Impact of the initial classic section during a simulated cross-country skiing skiathlon on the cardiopulmonary responses during the subsequent period of skate skiing
Clinical Investigation Centre in Technologic Innovation, INSERM CIT808, University Hospital of Besançon, France .
Mittuniversitetet, Fakulteten för humanvetenskap, Avdelningen för hälsovetenskap. (NVC)
Mittuniversitetet, Fakulteten för humanvetenskap, Avdelningen för hälsovetenskap. (NVC)
Mittuniversitetet, Fakulteten för humanvetenskap, Avdelningen för hälsovetenskap. (NVC)
Vise andre og tillknytning
2014 (engelsk)Inngår i: Applied Physiology, Nutrition and Metabolism, ISSN 1715-5320, Vol. 39, nr 8, s. 911-919Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The aim of this study was to assess potential changes in the performance and cardiorespiratory responses of elite cross-country skiers following transition from the classic (CL) to the skating (SK) technique during a simulated skiathlon. Eight elite male skiers performed two 6 km (2 × 3 km) roller-skiing time trials on a treadmill at racing speed: one starting with the classic and switching to the skating technique (CL1-SK2) and another employing the skating technique throughout (SK1-SK2), with continuous monitoring of gas exchanges, heart rates, and kinematics (video). The overall performance times in the CL1-SK2 (21:12 ± 1:24) and SK1-SK2 (20:48 ± 2:00) trials were similar, and during the second section of each performance times and overall cardiopulmonary responses were also comparable. However, in comparison with SK1-SK2, the CL1-SK2 trial involved significantly higher increases in minute ventilation (VE, 89.8 ± 26.8 vs. 106.8 ± 17.6 L·min-1) and oxygen uptake (VO2; 3.1 ± 0.8 vs 3.5 ±0.5 L·min-1) 2 min after the transition as well as longer time constants for VE, VO2, and heart rate during the first 3 min after the transition. This higher cardiopulmonary exertion was associated with ~3% faster cycle rates. In conclusion, overall performance during the 2 time trials did not differ. The similar performance times during the second sections were achieved with comparable mean cardiopulmonary responses. However, the observation that during the initial 3-min post-transition following classic skiing cardiopulmonary responses and cycle rates were slightly higher supports the conclusion that an initial section of classic skiing exerts an impact on performance during a subsequent section of skate skiing.

sted, utgiver, år, opplag, sider
2014. Vol. 39, nr 8, s. 911-919
Emneord [en]
Heart rate, Kinematics, Lower-body, Oxygen pulse, Oxygen uptake, Performance, Skier, Upper-body, Ventilation
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-22631DOI: 10.1139/apnm-2013-0550ISI: 000341559700007Scopus ID: 2-s2.0-84905195597OAI: oai:DiVA.org:miun-22631DiVA, id: diva2:748961
Merknad

Correspondence Address: Mourot, L.; EA 4660 Culture Sport Health Society and Exercise Performance, Health, Innovation Platform, University of Franche-Comté, 19 rue A Paré, Batiment Socrate - Plateforme EPSI, F-25030 Besancon, France; email: laurent.mourot@univ-fcomte.fr

Tilgjengelig fra: 2014-09-22 Laget: 2014-08-20 Sist oppdatert: 2014-10-13bibliografisk kontrollert

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