There are four types of validity: content validity, criterion-related validity, construct validity, and face validity. When a ...

In general, agreement of a device compared with a criterion method during a specific type of activity with a specific intensity is only valid for these conditions. Thus, validity testing programmes of ...

Based on the evaluation of four iMG systems (Biocore-Football Research Inc (FRI), HitIQ, ORB, Prevent) for in-laboratory (linear and angular (rotational) kinematics) and on-field validity ...