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A three-dimensional analysis of javelin throwing technique

R J Best1, R M Bartlett, C J Morriss

  • 1Department of Physical Education and Recreation, Victoria University of Technology, Footscray, Melbourne, Australia.

Journal of Sports Sciences
|August 1, 1993
PubMed
Summary

Three-dimensional kinematic analysis of elite javelin throws reveals distinct techniques and confirms the necessity of 3D over 2D analysis for accurate release parameters and performance insights.

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Area of Science:

  • Sports Biomechanics
  • Athletic Performance Analysis

Background:

  • Elite javelin throwing technique analysis is crucial for performance optimization.
  • Previous studies often relied on two-dimensional (2D) analysis, potentially limiting accuracy.

Purpose of the Study:

  • To conduct a three-dimensional (3D) kinematic analysis of elite javelin throws.
  • To determine accurate 3D release parameters for male and female throwers.
  • To compare the accuracy of 2D versus 3D analysis for javelin throw parameters.

Main Methods:

  • Utilized cine-film from two phase-locked cameras (100 Hz) from the 1991 World Student Games.
  • Digitized every other frame for kinematic data acquisition.
  • Adhered to British Association of Sports Sciences guidelines for methodology.

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Main Results:

  • Identified potential for two distinct throwing techniques based on hip joint timing and run-up speed trade-offs.
  • Marginal differences observed in key release parameters between 2D and 3D analyses.
  • 3D analysis provided crucial data (e.g., sideslip, incidence, azimuth, track angle, yaw rate) missed by 2D.

Conclusions:

  • 3D kinematic analysis is essential for a comprehensive understanding of javelin throwing technique.
  • 3D analysis offers superior temporal and spatial data compared to 2D methods.
  • Future research should focus on wind effects and javelin vibration in 3D analyses.