Background and aims: The maximum aerobic capacity or VO2max is a measure of the maximum volume of oxygen that can be absorbed by respiratory system and delivered to the acting muscles through blood flow. The aims of this study were to determine the correlation between the two methods of treadmill and Step tests in estimating the maximum aerobic capacity and it's affecting factors among students of Qazvin University of Medical Sciences. Methods: This cross-sectional study conducted among 68 students (47 males and 21 females) who participated voluntarily. First, the participants completed Physical Activity Readiness Questionnaire (PAR-Q) and demographic characteristics, and if they met inclusion criteria, Step and treadmill tests were performed according to Gerkin and ASCM protocols, respectively. Results: The results showed that the mean and standard deviation of maximum aerobic capacity estimated from (ACSM) and Gerkin protocols were 2. 86± 0. 66 and 1. 86± 0. 32, respectively. Significant and positive correlation were estimated between two tests for maximum aerobic capacity via two protocols of ASCM and Gerkin (r=0. 74 and p<0. 001). Also, there were significant associations among maximum aerobic capacity with age, sex, weight, height, and BMI in both (ACSM) and Gerkin protocols. Conclusion: According to the results of almost the same (ACSM) and Gerkin tests, Step test can be used instead of the treadmill test to estimate the maximum aerobic capacity. Additionlly, physiological characteristics of the human such as sex, age, height and weight have main roles in maximum aerobic capacity.

The purpose of this study was to designing new maximal Step test titled Tarbiat Modares Step test (TMST) to predicting of V02max.Thirty physical education students participated in this study (age 23. 6±0.38 years; body mass 60.97±1.84kg; height 164.63±1.26 cm; body fat percent 26.18±0.8T) and performed a progressive cycle ergo meter test and TMST to measuring VO2max by expired gas analysis. The TMST was performed with the height of the bench set even with the height of the foot at a knee angle of 90°. The regression equation to predict VO2max using TMST was:VO2max (ml/kg/min) = 0.71(Final Stepping Rhythm) + 0.1(Final Heart Rate)- 0.18 (Body Mass) There was no significant difference in VO2max and total testing time between progressive cycle ergo meter test and TMST (P>0.05). There was significant correlation between VO2max, Peak Heart Rate (PHR) and respiratory quotient in two tests (P£0.01). Also, the results showed correlation between the rate of perceived exertion and Respiratory Exchange Rate (RER) (P>0.05). We concluded, TMST is a simple test that predict V02max with high accurately (Standard error=4/39 ml/kg/min).

The aim of this research was to study the congruence of school readiness test with First Step test (FST) scores. A stratified sample of 110 were selected out of newly entered students in Shahrekord elementary schools in 2001, and their educational achievement and the relation it had with FST scores were examined. The analysis of variance, regression and Pealson correlation showed that FST scores were correlated with School Readiness test scores. The regression of achievement scores through the three cognitive, lingual and motor scores according to F- test is meaningful. According to the R the common variance for FST and Educational Achievement is 24 percent and higher in lingual side. There is also meaningful correlation between First Step sub-tests, and it also enjoys an internal consistency. Further more, the cognitive skills sub-tests of FST are correlated with reading achievement and lingual skills sub- test with Math achievement meaning filly. The general analysis indicates that FST can differentiate normal, learning delayed and disabled students, and FST is reliable to be used to measure school readiness of children.

Introduction: The maximum aerobic capacity (VO2-max) can be used to assess the cardio-respiratory condition and fit the physiological characteristics of workers to the work. This study was conducted to determine the correlation between the two methods of estimating the maximum aerobic capacity and its affecting factors among students of Shiraz University of Medical Sciences.Materials and Methods: In this cross-sectional study, 104 students (54 males and 50 females) participated voluntarily (age ranged from 18 to 28 years). The subjects were assessed by Step test according to Astrand and (ACSM) protocols. The data collecting tool was a questionnaire including separate sections of demographic (age, sex, etc.), anthropometric (height, weight and BMI) and physiological (VO2-max) characteristics.Results: The results revealed that the maximum aerobic capacity estimated from Astrand and (ACSM) protocols were 3.21 (0.825) and 3.13 (0.707) l.min-1, respectively. Pearson correlation test showed high correlation between estimated maximum aerobic capacity via two protocols of Astrand and (ACSM) (r=0.958). Meanwhile, there were significant associations among maximum aerobic capacity with weight, height, BMI and the number of hours of exercise per week.Conclusion: The two methods for estimating the maximum aerobic capacity (Astrand and (ACSM)) were highly correlated. Variables such as weight, height, BMI, and number of hours of exercise per week can be named as effective factors on VO2-m.