Interaction between muscle stiffness and stretch reflex sensitivity after long-term stretch-shortening cycle exercise

✍ Scribed by Janne Avela; Prof Paavo V. Komi

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 103 KB
• Volume: 21
• Category: Article
• ISSN: 0148-639X
• DOI: 10.1002/(sici)1097-4598(199809)21:9<1224::aid-mus19>3.0.co;2-r

✦ Synopsis

The short latency stretch-reflex component (M 1 ) and its interactions with muscle stiffness and with muscle performance were investigated before and after long-term stretch-shortening cycle (SSC) exercise. Dramatic fatigue induced reduction in maximal SSC performance capability, and electromyographic activity was accompanied by a consistent decrease in the M 1 reflex component and eccentric peak stiffness of the muscle. It can be suggested, therefore, that the decreased muscle performance is not simply a direct effect of central or peripheral fatigue, but is partly due to impairment of the ability to utilize stiffness-related elastic energy.