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Validation of an accelerometer for measuring sport performance.

Kimitake Sato1, Sarah L Smith, William A Sands

  • 1Department of Sport and Exercise Science, University of Northern Colorado, Greeley, Colorado, USA. jpnsatok@hotmail.com

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|December 4, 2008
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Summary

A validated accelerometer provides real-time barbell acceleration data, correlating highly with video analysis. This tool offers instant feedback for weightlifting training, enhancing performance assessment.

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Area of Science:

  • Biomechanics
  • Sports Science
  • Human Movement Analysis

Background:

  • Weightlifting analysis traditionally focuses on barbell velocity and trajectory.
  • Kinematic data, specifically barbell acceleration, is underreported in research.
  • Real-time feedback is crucial for effective coaching and athlete development.

Purpose of the Study:

  • To validate a commercial accelerometer's ability to measure barbell acceleration.
  • To compare accelerometer-derived data with high-speed video kinematic analysis.
  • To assess the utility of accelerometers for real-time weightlifting feedback.

Main Methods:

  • Seven volunteers performed barbell high-pull exercises.
  • Accelerometer data was collected concurrently with high-speed video.
  • Kinematic data, including acceleration, was derived from video analysis.

Main Results:

  • Accelerometer measures showed a high correlation (r = 0.94-0.99) with video-derived acceleration.
  • The accelerometer was deemed a valid tool for measuring barbell acceleration.
  • The device demonstrated potential for use outside laboratory settings.

Conclusions:

  • Commercial accelerometers are validated for measuring barbell acceleration in weightlifting.
  • The device offers a practical solution for real-time performance feedback.
  • This technology can significantly aid coaches and athletes in technique assessment and improvement.