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DOI: 10.1055/s-2003-39082
Neuromuscular Behaviour of the Triceps Surae Muscle-Tendon Complex during Running and Jumping
Publikationsverlauf
Accepted after revision: July 7, 2002
Publikationsdatum:
12. Mai 2003 (online)

Abstract
The present study examined the behaviour of the Achilles tendon (AT) - triceps surae (TS) muscle complex during running and long jump take-off. High AT forces were measured in the push-off phase in running even with very low EMG activity. In the long jump, high rate of stiffness development was a characteristic of the braking phase of the jump. The results suggest that high and well-coordinated activation patterns of the leg extensor muscles during the preactivation and eccentric phases together with high stretching velocities of muscle-tendon complex provide basis for appropriate tendomuscular stiffness. This together with high force at the end of the eccentric phase enables an effective push-off (concentric) phase.
Key words
Achilles tendon - force - EMG - stiffness - running - long jump
References
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Dr. H. Kyröläinen
Department of Biology of Physical Activity · University of
Jyväskylä
40100 Jyväskylä · Finland
Fax: +358 14 2602071
eMail: heikki@maila.jyu.fi