|
چکیده
|
The aim of this study was, validation of slope of the lines between selected physiological variables (VO2, VCO2, VE, HR) for evaluation of cardio-respiratory fitness in Iranian boys. So we investigate cardio-respiratory fitness without exhaustive protocol and below the lactate threshold, measured. For that purpose, middle and high school students were randomly selected and number of 72 healthy adolescent boys with a mean age 13.95 ± 1.84 (years) and body mass index of 19.91 ± 3.4 (kg/m2), weight 51.64±13.15 (kg) voluntarily participated in an aerobic exhaustive test. Also, VO2max value using gas analyzer method (VE, VO2, VCO2 values) was measured with a breath by breath style. Then its correlation with slope of the line of the physiological parameters (VO2, VCO2, VE, HR) were analyzed. Results showed a high validity evaluating of the performance of children's cardio-respiratory functional reserve exists for OUES (R=0.95, SEE=292.2) and index slope of the lines between selected physiological variables was high too (R=0.74-0.81). Also there are moderate correlation between VO2max and index slope of the lines between selected variables in time %80 of test (R=0.70 – 0.94) and in Lactate threshold (R=0.31–0.86). Overall, results showed that slope of the lines between variables (VO2,VCO2,VE,HR) and OUES can be new indicators to measure of the cardio-respiratory system in Iranian teenage boys respiratory and diseases of screening studies or sports talent, especially when the activity is in lactate threshold (in %56 time test), used ofthis finding are significant and outstanding.
|