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Related Experiment Videos

Functional multijoint position reproduction acuity in overhead-throwing athletes.

Brady L Tripp1, Timothy L Uhl, Carl G Mattacola

  • 1Florida International University, Miami, FL 33199, USA. brady_tripp@yahoo.com

Journal of Athletic Training
|June 23, 2006
PubMed
Summary

This study found sensorimotor acuity differs between baseball throwing positions and joint movements. These findings can inform targeted training for overhead athletes to improve upper extremity function.

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Area of Science:

  • Biomechanics
  • Sports Medicine
  • Sensorimotor Control

Background:

  • Baseball players require precise sensorimotor control for optimal upper extremity stability and mobility during athletic performance.
  • Limited research exists on functional, multijoint sensorimotor acuity in overhead-throwing athletes.

Purpose of the Study:

  • To compare sensorimotor acuity in two high-demand functional positions (arm cock and ball release) in baseball players.
  • To analyze sensorimotor acuity across different planes of motion within shoulder and elbow joints.
  • To introduce and validate a novel method for measuring functional sensorimotor acuity.

Main Methods:

  • Employed a single-session, repeated-measures design in a university musculoskeletal research laboratory.
  • Utilized an electromagnetic tracking device to measure active multijoint position reproduction acuity.

Related Experiment Videos

  • Assessed 21 NCAA Division I baseball players, measuring error scores in scapulothoracic, glenohumeral, elbow, and wrist joints.

    • Main Results:

    • Sensorimotor acuity was significantly better in the arm-cock position compared to ball release at the scapulothoracic and glenohumeral joints.
    • Significant differences in acuity were observed among planes of motion within the scapulothoracic and glenohumeral joints during the ball release position.
    • Scapulothoracic internal rotation and glenohumeral horizontal abduction/rotation showed lower acuity.

    Conclusions:

    • Validated a reliable, functional method for assessing upper extremity sensorimotor acuity in baseball players.
    • Demonstrated significant differences in sensorimotor acuity between throwing positions and within joint planes.
    • Findings suggest clinicians can use these insights for tailored sensorimotor training programs, emphasizing the upper extremity as a functional unit.