This study aimed at identifying the reliability and validity of the Canadian Agility and Movement Skill Assessment (CAMSA), when assessed in real-time.

A sample of 70 primary and 356 secondary students participated voluntarily. Anthropometric variables, CAMSA, 10×5-m shuttle run test and 10×4-m shuttle run test results of all participants were analysed.

Higher internal consistency values were observed among secondary children (α: 0.737–0.864) compared to primary students (α: 0.360–0.762). Absolute and relative reliability values were in general low, with only the CAMSA-S demonstrating fair reliability (ICC: 0.717). A fair significant association between CAMSA-S and agility measured by the 10×4-m and 10×5-m shuttle tests (Rho=0.422) was found. This association was moderate in primary students (Rho=0.649) and fair in secondary students (Rho=0.382). A fair association with the time component of CAMSA (Rho=0.402), and a weaker fair association with the skill component (Rho=0.260) was observed.

The CAMSA demonstrated low test-retest reliability and fair validity when assessed in real-time, in a sample of primary and secondary children.