Normative data of agility T-test as a measure of change of direction speed in children aged 10-11

The objective of the current study was to assess the relative agility T-test as a measure of change of direction speed and establish normative data specifically for children aged 10-11. A sample of 350 boys and 220 girls within the specified age range, with no medical history of disease, was randomly recruited from various schools. The mean and standard deviation, as well as the range of values, were determined for several variables including age, body mass, height, and BMI for both boys (n=350, age=10.83±0.38 years, body mass=34.42±5.61 kg, height=1.44±0.06 m, BMI=16.59±2.13 kg/m²) and girls (n=220, age=10.79±0.41 years, body mass=34.85±6.36 kg, height=1.44±0.07 m, BMI=16.61±2.15 kg/m²). The T-test, along with the FCMJ and 30mSS tests, were performed at least three times with a three-minute recovery period between trials and a five-minute recovery period between tests. Test-retest reliability of the T-test was evaluated using the intraclass correlation coefficient (ICC), which yielded values of 0.95 for girls and 0.97 for boys. Significant correlations were observed between the T-test and FCMJ as well as the 30mSS for girls (r=-0.384, p<0.0001 and r=0.416, p<0.0001, respectively) and for boys (r=-0.344, p<0.0001 and r=0.440, p<0.0001, respectively). The study provides percentile values that can be utilized to monitor the physical fitness levels of both girls and boys.