Mass and velocity: control parameters for throwing patterns.
The purpose of this study was to determine if change in segmental mass and increases in throwing velocity act as control parameters to alter throwing patterns. Twenty participants were categorized into four levels of throwing pattern. Each participant was required to make 10 throws at various velocities within 8 conditions. Conditions resulted from combinations of altered mass of the arm, forearm, and hand. Quantitative and qualitative analyses indicated that changes in segmental mass and release velocity either increased or decreased levels of throwing pattern depending on the initial throwing level. It was concluded that mass and velocity may be control parameters which instigate changes in throwing patterns.
Southard
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Department of Kinesiology, Texas Christian University, USA. Southard@Gamma.is.tcu.edu
D000054:Acceleration; D000328:Adult; D000704:Analysis of Variance; D001132:Arm / Q000502:physiology*; D001484:Baseball / Q000502:physiology; D001823:Body Composition; D001835:Body Weight; D004551:Elbow Joint / Q000502:physiology; D005542:Forearm / Q000502:physiology*; D006225:Hand / Q000502:physiology*; D006801:Humans; D008297:Male; D009048:Motor Skills / Q000502:physiology*; D009068:Movement; D012785:Shoulder Joint / Q000502:physiology; D013997:Time Factors; D014955:Wrist Joint / Q000502:physiology