METHODS OF ESTIMATING ATHLETE INERTIAL PROPERTIES AND THEIR IMPLICATIONS FOR THE STUDY OF SOMERSAULTS

Eleven methods of estimating the inertial properties of an athlete based on anthropometric measurements were compared. Four parameters were chosen to reflect the practical implications of using different estimation methods in the study of the somersault, along with sets of appropriate postures. There was considerable variation between the parameter values produced by each method. Nevertheless there was agreement across all methods on the order of arm actions producing tilt, and the tilt produced by twisting-related postures. For these techniques and postures a coach may use the order to select one technique or posture in preference over another, without knowing the inertial properties exactly