Using EMGs and kinematics data to study the take-off technique of experts and novices for a pole vaulting short run-up educational exercise

This study attempts to characterise the electromyographic activity and kinematics exhibited during the performance of take-off for a pole vaulting short run-up educational exercise, for different expertise levels. Two groups (experts and novices) participated in this study. Both groups were asked to execute their take-off technique for that specific exercise. Among the kinematics variables studied, the knee, hip and ankle angles and the hip and knee angular velocities were significantly different. There were also significant differences in the EMG variables, especially in terms of (i) biceps femoris and gastrocnemius lateralis activity at touchdown and (ii) vastus lateralis and gastrocnemius lateralis activity during take-off. During touchdown, the experts tended to increase the stiffness of the take-off leg to decrease braking. Novices exhibited less stiffness in the take-off leg due to their tendency to maintain a tighter knee angle. Novices also transferred less energy forward during take-off due to lack of contraction in the vastus lateralis, which is known to contribute to forward energy transfers. This study highlights the differences in both groups in terms of muscular and angular control according to the studied variables. Such studies of pole vaulting could be useful to help novices to learn expert's technique.
© Copyright 2010 Journal of Science and Medicine in Sport. Elsevier. All rights reserved.

Bibliographic Details
Subjects:
Notations:technical and natural sciences strength and speed sports
Published in:Journal of Science and Medicine in Sport
Language:English
Published: 2010
Online Access:http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B82X6-4XD66B1-1&_user=1467461&_coverDate=09%2F30%2F2010&_rdoc=18&_fmt=high&_orig=browse&_origin=browse&_zone=rslt_list_item&_srch=doc-info(%23toc%2333022%232010%23999869994%232264781%23FLA%23display%23Volume)&_cdi=33022&_sort=d&_docanchor=&view=c&_ct=19&_acct=C000052823&_version=1&_urlVersion=0&_userid=1467461&md5=14a76aa2f52dd11e8d49661e4fd86d50&searchtype=a
Volume:13
Issue:5
Pages:554-558
Document types:article
Level:advanced