Validation of the CardioCoachCO2 for Submaximal and Maximal Metabolic Exercise Testing

• Autores: Christina M. Dieli-Conwright, Nicole E. Jensky, Gina M. Battaglia, Scott A. McCauley, E. Tood Schroeder
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 23, Nº. 4, 2009, págs. 1316-1320
• Idioma: inglés
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• Resumen

  • This study examined the validity of the CardioCoachCO2 metabolic system to measure oxygen capacity by comparison to a previously validated device. Fourteen subjects (8 men and 6 women; 25.9 ± 6.6 years of age) completed 2 maximal graded exercise tests on a cycle ergometer. Subjects were randomly tested on the CardioCoachCO2 and Medical Graphics CardiO2/CP (MedGraphics) system on 2 separate visits. The exercise test included 3 submaximal 3-minute stages (50, 75, and 100 W for women; 50, 100, and 150 W for men) followed by incremental, 25 W, 1-minute stages until volitional fatigue ([latin capital V with dot above]o2max). There was no significant difference between the CardioCoachCO2 and MedGraphics except at the 100 W stage (22.4 ± 4.8 and 20.3 ± 3.7 ml·kg-1·min-1, p = 0.048, respectively). Spearman correlations demonstrated a strong correlation between the 2 devices at maximal [latin capital V with dot above]o2 (R = 0.94). Bland-Altman plots demonstrated small limits of agreement, indicating that the 2 devices are similar in measuring oxygen consumption. This study indicates that the CardioCoachCO2 is a valid device for testing [latin capital V with dot above]o2 at submaximal and maximal levels. Validation of this device supports the CardioCoachCO2 as a feasible and convenient method for testing participants and may be useful in the field or clinic.