BIOMECHANICAL SPORT ANALYSIS THROUGH DATA INTEGRATION A. Finch 1, G. Ariel 2, J. Brond 2, A. Penny 2 & J. Wise 2 1 Indiana State University 2 Ariel Dynamics.

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Presentation transcript:

BIOMECHANICAL SPORT ANALYSIS THROUGH DATA INTEGRATION A. Finch 1, G. Ariel 2, J. Brond 2, A. Penny 2 & J. Wise 2 1 Indiana State University 2 Ariel Dynamics

PURPOSE USE OF SYNCHRONIZED INTEGRATED VIDEO AND KINEMATIC DATA FOR SPORT ANALYSIS OF: l DISCUS THROWING l BASKETBALL FREE THROW SHOOTING l HIGH JUMPING.

Project 1 Discus Throwing The best and worst discus attempts by A. Washington (USA), 4th place competitor at 1996 Atlanta Olympic Games were analyzed from 2 camera views

Camera Views

PROCEDURES 21 data points were digitized and transformed to real distances and smoothed at 10 Hz frequency cut- off with an second order Butterworth digital filter.

Calibration Cube

Washington Throwing Kinematics

Discus APAS view Data Integration

Technique Comparison

Horizontal Shoulder Angular Velocity

Discus Conclusions lThe poor attempt had a -4% slower resultant disc velocity and a decrease of 43% in horizontal velocity. lThe poor attempt was released at 100% steeper angle. lHorizontal angular shoulder velocity was 18% slower at release for the poor throw.

Analysis Results Reviewed with Athlete at Olympic Training Session

Project #2 Basketball Free Throw Shooting lVideo records from frontal & sagittal views were taken of Indiana State University Women’s Basketball Team while shooting free throws during conference competition. lData was digitized, transformed, and digitally smoothed (10 hz) to real distances.

Shooting Variables Calculated lFrom the 3-D information, the athlete’s ball projection velocity and angle for a successful and missed attempt. lThe shooter’s elbow and shoulder angular velocities were calculated along the sagittal plane

Shooting Trajectory Data

Joint Angular Velocities

Shooting Data Integration

CONCLUSIONS lThe missed shot was caused by a fast release velocity, flat release angle. lAngular velocities were higher for the missed shot. Faster shoulder (26%) and elbow (92%) angular velocity was determined for the missed shot. lThe shooter pulled their hand back at release

ISU BBall view Demo

Project #3 High Jumping lSimultaneous video records from a front right and left side viewing perspective were collected of a high jumping practice attempt (2.29m ) of an elite collegiate high jumper. lData was digitized, transformed, and digitally smoothed at 10 Hz. lThe vertical displacements and vertical velocities of the body CM were calculated. lIntegrated data analysis of video and kinematic data was performed.

High Jump CM Vertical Velocity

High Jump Technique

Jump Height Verification

High Jump Integrated Data

Conclusion The high jumper’s takeoff occurred too far out from the bar but he adjusted his projection angle to peak over the bar. lThe high jumper’s CM was at its apex during bar clearance. The CM passed 18 cm below the 2.28 m bar height. lThe jumper utilized a hip pike- hip drop maneuver to facilitate leg clearance

High Jump APAS view Demo

Project Conclusion Integration of kinematic data and video views on a synchronized time base using the Ariel APAS view software is an effective method to visually and quantitatively to analyze sport performance.

Thank You