Do regression-based computer algorithms for determining the ventilatory threshold agree?
The determination of the ventilatory threshold has been a persistent problem in research and clinical practice. Several computerized methods have been developed to overcome the subjectivity of visual methods but it remains unclear whether different computerized methods yield similar results. The pur...
| Publicado en: | Journal of Sports Sciences Vol. 26; no. 9; pp. 967 - 977 |
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| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jul2008
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105665596&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105665596 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 02640414 5BV jtl: Journal of Sports Sciences issn: 02640414 maglogo: Y pubinfo: dt: Jul2008 vid: 26 iid: 9 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 105665596 105665596 2009984500 10.1080/02640410801910269 NLM18569563 105665596 ppf: 967 ppct: 10 formats: tig: atl: Do regression-based computer algorithms for determining the ventilatory threshold agree? aug: au: Ekkekakis P Lind E Hall EE Petruzzello SJ affil: Department of Kinesiology, Iowa State University, Ames, Iowa. sug: subj: Algorithms Data Analysis, Computer Assisted Pulmonary Gas Exchange Evaluation Regression Adult Analysis of Variance Bivariate Statistics Comparative Studies Exercise Test, Cardiopulmonary Female Illinois Male Models, Statistical Oxygen Consumption Evaluation Paired T-Tests Pearson's Correlation Coefficient Spearman's Rank Correlation Coefficient Treadmills Human Adult: 19-44 years Female Male ab: The determination of the ventilatory threshold has been a persistent problem in research and clinical practice. Several computerized methods have been developed to overcome the subjectivity of visual methods but it remains unclear whether different computerized methods yield similar results. The purpose of this study was to compare nine regression-based computerized methods for the determination of the ventilatory threshold. Two samples of young and healthy volunteers (n = 30 each) participated in incremental treadmill protocols to volitional fatigue. The ventilatory data were averaged in 20-s segments and analysed with a computer program. Significant variance among methods was found in both samples (Sample 1: F = 11.50; Sample 2: F = 11.70, P < 0.001 for both). The estimates of the ventilatory threshold ranged from 2.47 litres . min(-1) (71%[Vdot]O(2max)) to 3.13 litres . min(-1) (90%[Vdot]O(2max)) in Sample 1 and from 2.37 litres . min(-1) (67%[Vdot]O(2max)) to 3.03 litres . min(-1) (83%[Vdot]O(2max)) in Sample 2. The substantial differences between methods challenge the practice of relying on any single computerized method. A standardized protocol, likely based on a combination of methods, might be necessary to increase the methodological consistency in both research and clinical practice. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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