|
Title
|
Prediction of Maximal Oxygen Uptake by Six-Minute Walk Test and Body Mass Index in Healthy Boys
|
|
Type
|
JournalPaper
|
|
Keywords
|
Cardio Respiratory fitness; field exercise test; VO2max prediction equation
|
|
Abstract
|
Objective To develop a new regression equation to predict maximal oxygen uptake (VO2max) based on the 6-minute walk test (6MWT) and body composition indices in healthy boys. Study design Direct VO2max, 6-minute walk distance (6MWD) and anthropometric characteristics were measured in 349 healthy boys (12.49±2.72yrs) with standard methods. Multiple regression analysis was used to generate VO2max prediction equation. Cross validation of the VO2max prediction equation was assessed using PRESS (predicted residual sum of squares) statistics. Pearson correlation was used to assess correlation between measured and predicted VO2max. Results Objectively measured VO2max had a significant correlation with demographic and the 6MWT characteristics (R = 0.11 to 0.723, P<0.01). Multiple regression analysis revealed the following VO2max prediction equitation: VO2max (ml/kg/min) = 12.701 + (0.06 × 6MWD m) – (0.732 × BMI kg/m2) (R2=0.79, SEE = 2.91 ml/kg/min, %SEE= 6.9%). There was strong correlation between measured and predicted VO2max (r=0.875, P<0.001). Cross validation revealed minimal shrinkage (R 2p = 0.78 and SEEp = 2.99 ml/kg/min). Conclusions This study provides a relatively accurate and convenient VO2max prediction equation based on the 6MWT and BMI in healthy boys. This model can be used for evaluation of cardio-respiratory efficiency of boys in different settings.
|
|
Researchers
|
kamal ranjbar (Fourth Researcher), akbar sazvar (Third Researcher), farzad nazem (Second Researcher), Majid Jalili (First Researcher)
|