title: The accuracy of the ACSM and a new cycle ergometry equation for young women.
abstract: The purpose of this study was to determine the accuracy of the American College of Sports Medicine's (ACSM) equation for estimating the oxygen cost of exercise performed by women on a cycle ergometer. Sixty healthy, young females performed a five-stage submaximal cycle ergometry test. Results indicated the SEE for the predicted oxygen values ranged from 79-156 ml.min-1, with total errors (E) ranging from 107-275 ml.min-1. Correlations between the actual and predicted values ranged from r = -0.22 to r = 0.38. The r, SEE, and E were 0.96, 118, and 172, respectively for all of the power loads combined. A revised equation was developed based upon the actual VO2-power relationship. This equation appears as: VO2 (ml.min-1) = kgm.min-1 x 1.6 ml.min-1 + ((3.5 ml.kg-1.min-1 x kg body weight) + 205 ml.min-1). Cross validation was performed on an independent sample of 40 subjects. All of the SEE and E were lower and all of the correlations were higher at each power load in the validation sample. Since the revised equation is based on an actual VO2-power relationship, it would appear that it provides a more accurate depiction of the cycle ergometry VO2-power relationship for women. These facts support its use.
authors.affiliation: School of Health, Physical Education and Recreation, University of Nebraska at Omaha 68182-0216.
authors.forename: R W
authors.initials: RW
authors.lastname: Latin
authors.forename: K E
authors.initials: KE
authors.lastname: Berg
mesh_terms: D000328:Adult; D015308:Anaerobic Threshold / Q000502:physiology; D002138:Calibration; D004867:Equipment Design; D005080:Exercise Test / Q000295:instrumentation / Q000379:methods; D005260:Female; D005544:Forecasting; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D010101:Oxygen Consumption / Q000502:physiology*; D012016:Reference Values; D015203:Reproducibility of Results; D013178:Sports Medicine