CONCURRENT VALIDITY AND RELIABILITY OF IN-LAB MARKERLESS MOTION CAPTURE IN ESTIMATING JOINT KINEMATICS IN BASEBALL PITCHING

Authors

Tyler Cardinale, Point Loma Nazarene UniversityFollow
Taylor La Salle, Point Loma Nazarene University
Arnel Aguinaldo, Point Loma Nazarene UniversityFollow

Category

Technology/equipment

Document Type

Paper

Abstract

Markerless motion capture systems allow for the estimation of 3D segmental pose of human movement without the encumbrance of makers. Therefore, the aim of this study is to measure the concurrent validity and reliability of baseball pitching kinematics estimated by an in-lab markerless motion capture system. This analysis is based of 100 pitches thrown by 18 collegiate baseball pitchers. Discrete kinematic variables varied in their equivalence and reliability between systems. Kinematic variables in the sagittal plane had more agreement between systems than variables in the transverse plane. Segment lengths were also comparable between systems. Although markerless technology provides ease of collecting biomechanical data in a baseball setting, inter-system differences do still exist between marker-based systems and markerless systems.

Recommended Citation

Cardinale, Tyler; La Salle, Taylor; and Aguinaldo, Arnel (2024) "CONCURRENT VALIDITY AND RELIABILITY OF IN-LAB MARKERLESS MOTION CAPTURE IN ESTIMATING JOINT KINEMATICS IN BASEBALL PITCHING," ISBS Proceedings Archive: Vol. 42: Iss. 1, Article 238.
Available at: https://commons.nmu.edu/isbs/vol42/iss1/238