Validation of the CardioCoachCO2 for Submaximal and Maximal Metabolic Exercise Testing

• Published in: Journal of strength and conditioning research Vol. 23; no. 4; pp. 1316 - 1320
• Main Authors: Dieli-Conwright, Christina M, Jensky, Nicole E, Battaglia, Gina M, McCauley, Scott A, Schroeder, E Todd
• Format: Journal Article
• Language: English
• Published: United States National Strength and Conditioning Association 01.07.2009
• Subjects: Adult; Exercise Test - instrumentation; Female; Humans; Male; Monitoring, Physiologic - instrumentation; Oxygen Consumption - physiology; Physical Endurance - physiology
• ISSN: 1064-8011; 1533-4287; 1533-4287
• DOI: 10.1519/JSC.0b013e3181a3c5e8

Dieli-Conwright, CM, Jensky, NE, Battaglia, GM, McCauley, SA, and Schroeder, ET. Validation of the CardioCoachCo2 for submaximal and maximal metabolic exercise testing. J Strength Cond Res 23(4)1316-1320, 2009-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 ( 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·min, p = 0.048, respectively). Spearman correlations demonstrated a strong correlation between the 2 devices at maximal 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 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.