HEART-RATE VARIABILITY THRESHOLD AS AN ALTERNATIVE FOR SPIRO-ERGOMETRY TESTING: AVALIDATION STUDY.
Although spiro-ergometry is the established "gold standard" for determination of the second ventilatory threshold (VT2), it is a costly and rather time-consuming method. Previous studies suggest that assessing the second anaerobic threshold (AT2) on the basis of heart rate variability (HRV) during e...
| Published in: | Journal of Strength & Conditioning Research Vol. 31; no. 2; pp. 474 - 480 |
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| Main Authors: | , , , , , |
| Format: | research tables/charts Journal Article |
| Published: |
Lippincott Williams & Wilkins
Feb2017
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=121129827&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 121129827 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 10648011 JSC jtl: Journal of Strength & Conditioning Research issn: 10648011 maglogo: N pubinfo: dt: Feb2017 vid: 31 iid: 2 pid: 5086 pub: Lippincott Williams & Wilkins place: Baltimore, Maryland artinfo: ui: 121129827 121129827 121129827 10.1519/jsc.0000000000001502 121129827 ppf: 474 ppct: 6 formats: tig: atl: HEART-RATE VARIABILITY THRESHOLD AS AN ALTERNATIVE FOR SPIRO-ERGOMETRY TESTING: AVALIDATION STUDY. aug: au: MANKOWSKI, ROBERT T. ROZENBERG, ROBERT STOKLA, SEBASTIAAN STAM, HENK J. PRAET, STEPHAN F. E. MICHAEL, SCOTT affil: Department of Rehabilitation Medicine, Erasmus University Medical Centre, Rotterdam, the Netherlands sug: subj: Ergometry Heart Rate Variability Human Validation Studies Exercise Test Oxygen Consumption Male Female Anoxia Young Adult Descriptive Statistics Data Analysis Software Male Female ab: Although spiro-ergometry is the established "gold standard" for determination of the second ventilatory threshold (VT2), it is a costly and rather time-consuming method. Previous studies suggest that assessing the second anaerobic threshold (AT2) on the basis of heart rate variability (HRV) during exercise may be a more cost-effective and noninvasive manner. However, appropriate validation studies, are still lacking. Eleven healthy, moderately trained subjects underwent 3 incremental exercise tests. Ventilation, oxygen uptake (V[Combining Dot Above]O2), CO2 production (...CO2), and HRV were measured continuously. Exercise testing was performed in 3 oxygen (FiO2) conditions of inspired air (14, 21, and 35% of oxygen). Participants and assessors were blinded to the FiO2 conditions. Two research teams assessed VT2s and HRVT2s independently from each other. Mean workloads corresponding to VT2 and HRVT2 in hypoxia were, respectively, 19 ± 17% (p = 0.01) and 15 ± 15% (p = 0.1) lower in comparison with hyperoxic conditions. Bland-Altman analysis showed low estimation bias (2.2%) and acceptably precise 95% limits of agreement for workload -15.7% to 20.1% for all FiO2 conditions. Bias was the lowest under normoxic conditions (1.1%) in comparison with hypoxia (3.7%) and hyperoxia (4.7%). Heart rate variability--based AT2 assessment had a most acceptable agreement with VT2 under normoxic conditions. This simple HRVT2 assessment may have potential applications for exercise monitoring in commercial fitness settings. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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