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Second Ventilatory Threshold From Heart-Rate Variability: Valid When the Upper Body Is Involved?
Univ Franche Comte, F-25030 Besancon, France.
Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
Univ Verona, Ctr Res Mt Sport & Hlth, Rovereto, Italy.
Univ Verona, Ctr Res Mt Sport & Hlth, Rovereto, Italy.
2014 (English)In: International Journal of Sports Physiology and Performance, ISSN 1555-0265, Vol. 9, no 4, 695-701 p.Article in journal (Refereed) Published
Abstract [en]

To determine the most accurate method based on spectral analysis of heart-rate variability (SA-HRV) during an incremental and continuous maximal test involving the upper body, the authors tested 4 different methods to obtain the heart rate (HR) at the second ventilatory threshold (VT2). Sixteen ski mountaineers (mean +/- SD; age 25 +/- 3 y, height 177 +/- 8 cm, mass 69 +/- 10 kg) performed a roller-ski test on a treadmill. Respiratory variables and HR were continuously recorded, and the 4 SA-HRV methods were compared with the gas-exchange method through Bland and Altman analyses. The best method was the one based on a time-varying spectral analysis with high frequency ranging from 0.15 Hz to a cutoff point relative to the individual's respiratory sinus arrhythmia. The HR values were significantly correlated (r(2) = .903), with a mean HR difference with the respiratory method of 0.1 +/- 3.0 beats/min and low limits of agreements (around -6 /+ 6 beats/min). The 3 other methods led to larger errors and lower agreements (up to 5 beats/min and around -23/+ 20 beats/min). It is possible to accurately determine VT2 with an HR monitor during an incremental test involving the upper body if the appropriate HRV method is used.

Place, publisher, year, edition, pages
2014. Vol. 9, no 4, 695-701 p.
Keyword [en]
respiratory sinus arrhythmia, spectral analysis, ski mountaineers
National Category
Sport and Fitness Sciences Physiology
Identifiers
URN: urn:nbn:se:miun:diva-24404DOI: 10.1123/IJSPP.2013-0286ISI: 000348148600018PubMedID: 24231307Scopus ID: 2-s2.0-84903830207OAI: oai:DiVA.org:miun-24404DiVA: diva2:790104
Available from: 2015-02-23 Created: 2015-02-23 Last updated: 2015-03-12Bibliographically approved

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CiteExportLink to record
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