Body Segment Contributions to Javelin Throwing during Final Thrust Phases
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This study investigated body segment contributions to javelin throwing during the last thrust phases. A 3-D analysis was performed on male and female javelin throwers during the finals of the 1992 Olympic Games in Barcelona. The subjects were videotaped from the right sight of the throwing area by two NAC high-speed cameras operating at 100 frames per second. Both men’s and women’s grip of javelin and body center of mass displayed a curved pathway to the right from the left (bracing) foot during the final foot contact. The position of the body center of mass decreased at the beginning of the final foot contact, but after the decrease period it began to increase. Simultaneously with the increase, the peak joint center speeds occurred in a proper sequence from proximal to distal segments and finally to the javelin at release. Release speed correlated significantly with throwing distance in both male and females.
Mero and P.V. Komi: Dept. of Biology of Physical Activity, U. of Jyväskylä, PO Box 35, SF-40351, Jyväskylä, Finland. T. Korjus: Kuortane Sports Institute, SF-63170 Kuortane, Finland. E. Navarro: Instituto de Biomecanica de Valencia, 46980 Pantana, Valencia, Spain. R.G. Gregor: Dept. of Health & Performance Sciences, Georgia Institute of Technology, Atlanta, GA 30332.
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