Performance Evaluation for Weightlifting Lifter by Barbell Trajectory

The purpose of this study is to investigate the kinematic
characteristics and differences of the snatch barbell trajectory of 53 kg
class female weight lifters. We take the 2014 Taiwan College Cup
players as examples, and tend to make kinematic applications through
the proven weightlifting barbell track system. The competition videos
are taken by consumer camcorder with a tripod which set up at the side
of the lifter. The results will be discussed in three parts, the first part is
various lifting phase, the second part is the compare lifting between
success and unsuccessful, and the third part is to compare the
outstanding player with the general. Conclusion through the barbell
can be used to observe the trajectories of our players lifting the usual
process cannot be observed in the presence of malfunction or habits, so
that the coach can find the problem and guide the players more
accurately. Our system can be applied in practice and competition to
increase the resilience of the lifter on the field.

• Ying-Chen Lin
• Ching-Ting Hsu
• Wei-Hua Ho

• Computer aided sport training
• Kinematic
• Trajectory
• Weightlifting.

[1] K. Sato, W. A. Sands and M. H. Stone, “The Reliability of Accelerometry
to Measure Weightlifting Performance,” Sports Biomechanics, vol. 11(4),
pp. 524-531, November 2012.
[2] Siliconcoach Official Website. Retrieved from
http://www.siliconcoach.com/products/siliconcoach_pro/#introduction
[3] C. T. Hsu, W. H. Ho, J. L. Chen, and Y. C. Lin, “Efficient Barbell
Trajectory Extraction Algorithm for Kinematic Analysis using Video
Spatial and Temporal Information,” Biomedical Engineering / 817:
Robotics Applications, 818-041 (Bio Med Zurich, Switzerland 2014).
[4] R. M.Enoka, “The pull in Olympic weightlifting,” Medicine and Science
in Sports, 11, pp.131-37, 1979.
[5] J. Garhammer, “Weight lifting and training,” Biomechanics of Sport,
pp.169-211, 1989.
[6] A. Storey, H. K. Smith, “Unique Aspects of Competitive Weightlifting,”
Sports Med, vol. 42(9), pp. 769-790, 2012.
[7] E. Harbili, “A gender-based kinematic and kinetic analysis of the snatch
lift in elite weightlifters,” Journal of Sports Science and Medicine, vol.
11(4), pp. 162-169, 2012.
[8] V. Gourgoulis, N. Aggelousis, G. Mavromatis and A. Garas,
“Three-dimensional kinematic analysis of the snatch of elite Greek
weightlifters,” Journal of Sports Sciences, 18, pp.643-652, 2000.
[9] H. Kauhanen and V.P. Komi, “Biomechanical changes in the Olympic
weightlifting technique of the snatch and clean and jerk from submaximal
to maximal loads,” Scandinavian Journal of Sports Sciences, 6, pp.57-66,
1984.
[10] B. Wolfgang, G. Volker, Q. Karl, G. Peter and S. Ansgar, “The snatch
technique of world class weightlifters at the 1985 World Championships,
”International Journal of Sport Biomechanics, 4, pp.68-89, 1988.
[11] S. M. A. Rahmati and M. Mallakzadeh, “Determination of optimum
objective function for evaluation optimal body and barbell trajectories of
snatch weightlifting via generic algorithm optimization,” 18th Iranian
conference on biomedical engineering, Iranian, 2011.
[12] S. Lenjannejadian, and M. Rostami, “Optimal trajectories of snatch
weightlifting for two different weight classes by using genetic algorithm,”
2008 Cairo international conference on biomedical engineering (1-4),
Cairo, Egypt, 2008.