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Heart rate variability to assess ventilatory threshold in ski-mountaineering
Univ Franche Comte, EA 4660, Culture Sport Hlth Soc, Exercise,Performance,Hlth,Innovat Platform, F-25030 Besancon, France..
Univ Franche Comte, EA Fonct & Dysfunct Epitheliales 4267, Exercise, Performance,Hlth,Innovat Platform, F-25030 Besancon, France.;Univ Hosp Besancon, Clin Invest Ctr Technol Innovat, INSERM CIT808, Besancon, France..
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. (Swedish Winter Sports Research Center)
Univ Perpignan, Dept STAPS Font Romeu, Lab Sport Sante & Altitude, Font Romeu, France..
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2015 (English)In: European Journal of Sport Science, ISSN 1746-1391, E-ISSN 1536-7290, Vol. 15, no 7, 615-622 p.Article in journal (Refereed) Published
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Abstract [en]

The capacity to predict the heart rate (HR) and speed at the first (VT1) and second (VT2) ventilatory thresholds was evaluated during an incremental ski-mountaineering test using heart rate variability (HRV). Nine skiers performed a field test to exhaustion on an alpine skiing track. VT1 and VT2 were individually determined by visual analysis from gas exchanges (VT1V and VT2V) and time-varying spectral HRV analysis (VT1fH, VT2fH and VT2H). VT1 could not be determined with the HRV methods used. On the contrary, the VT2 was determined in all skiers. No significant difference between HR and speed at VT2H and VT2V was observed (174.3 +/- 5.6 vs. 174.3 +/- 5.3 bpm, and 6.3 +/- 0.9 and 6.3 +/- 0.9 km h(-1), respectively). Strong correlations were obtained for HR (r = 0.91) and speed (r = 0.92) at VT2H and VT2V with small limits of agreement (+/- 3.6 bpm for HR). Our results indicated that HRV enables determination of HR and speed at VT2 during a specific ski-mountaineering incremental test. These findings provide practical applications for skiers in order to evaluate and control specific training loads, at least when referring to VT2.

Place, publisher, year, edition, pages
2015. Vol. 15, no 7, 615-622 p.
Keyword [en]
Athlete, oxygen uptake, performance, ski, training, ventilatory equivalents
National Category
Sport and Fitness Sciences
Identifiers
URN: urn:nbn:se:miun:diva-26569DOI: 10.1080/17461391.2014.957729ISI: 000363320000006PubMedID: 25228474Scopus ID: 2-s2.0-84945493443OAI: oai:DiVA.org:miun-26569DiVA: diva2:883425
Available from: 2015-12-17 Created: 2015-12-17 Last updated: 2016-01-13Bibliographically approved

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