Key result
Using ideal body weight rather than actual body weight in standard regression equations resulted in less overestimation of predicted VO2 max compared to measured VO2 max (P<0.001).
Why the study?
Does the use of ideal body weight compared to actual body weight in standard regression equations improve the accuracy of predicted VO2 max in patients undergoing cardiopulmonary exercise testing?
Observational (n=230)
Does the use of ideal body weight compared to actual body weight in standard regression equations improve the accuracy of predicted VO2 max in patients undergoing cardiopulmonary exercise testing?
p-value: p=<0.001
Using ideal body weight rather than actual body weight in standard regression equations reduces the overestimation of predicted VO2 max during cardiopulmonary exercise testing.
May enhance VO2 max prediction accuracy in CPET; hypothesis-generating pending prospective validation.
Background. Oxygen uptake at maximal exercise (VO2 max) is considered the best available index for assessment of exercise capacity. The purpose of this study is to determine if the use of actual versus ideal body weight in standard regression equations for predicted VO2 max results in differences in predicted VO2 max. Methods. This is a retrospective chart review of patients who were predominantly in active military duty with complaints of dyspnea or exercise tolerance and who underwent cardiopulmonary exercise testing (CPET) from 2007 to 2009. Results. A total of 230 subjects completed CPET on a bicycle ergometer with a male predominance (62%) and an average age of 37 ± 15 years. There was significant discordance between the measured VO2 max and predicted VO2 max when measured by the Hansen and Wasserman reference equations (P < 0.001). Specifically, there was less overestimation when predicted VO2 max was based on ideal body weight as opposed to actual body weight. Conclusion. Our retrospective analysis confirmed the wide variations in predicted versus measured VO2 max based on varying prediction equations and showed the potential advantage of using ideal body weight as opposed to actual body weight in order to further standardize reference norms.
No takes yet. Share an insight, caveat, or question.
Ahmadian et al. (2013) conducted an observational in Dyspnea or exercise tolerance complaints (n=230). Ideal body weight in standard regression equations vs. Actual body weight was evaluated on Discordance between measured VO2 max and predicted VO2 max by Hansen and Wasserman reference equations (p=<0.001). Using ideal body weight rather than actual body weight in standard regression equations resulted in less overestimation of predicted VO2 max compared to measured VO2 max (P<0.001).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: