KINEMATICAL PARAMETERS CONTRIBUTION TO THE FLIGHT HEIGHT USING ONE-FOOT OR TWO-FOOT TAKE-OFF
Keywords:one-two-foot, , vertical jump, kinematics
AbstractThe purpose of this study was to investigate which of the kinematics parameters most contribute to vertical flight heights. Eight subjects were filmed using Sony digital camera with 25 images from the sagittal plane during execution of the following vertical jump conditions: free two-foot take-off, free one-foot take-off, fixed arm two-foot take-off, and fixed arm one-foot take-off. Arm swing contribution, leg swing contribution, height of centre of gravity at take-off (HCGTO), vertical velocity at take-off, arm’s angular momentum, work, and power were analyzed in each condition using stick figures according to Clauser, McConville, and Young (1969). Correlation and regression analysis indicated that HCGTO contributed the most to the flight heights in all conditions.
Coaching and Sports Activities