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Electromyographic Activity of Rat Ankle Extensors During Treadmill Locomotion after Hindlimb Unloading
| Content Provider | Semantic Scholar |
|---|---|
| Author | Langlet, Cécile Canu, Marie-Hélène Falempin, Maurice |
| Copyright Year | 2002 |
| Abstract | The aim of this work was to study the electromyographic characteristics of two ankle extensors during treadmill locomotion after hindlimb unloading. The studied muscles were the soleus which contains mainly slow fibres, and three parts (red, mixed and white) of the heterogeneous gastrocnemius. Our results showed that the cycle duration was significantly increased (+26%) after 14 days of unloading; the burst duration was increased in the soleus (+18%) and in the red gastrocnemius (+20%). The mean EMG (burst area divided by burst duration) was decreased when treadmill speed was increased in the soleus (-11%) and the red part (-5%) of the gastrocnemius after unloading; in contrast, it was greatly increased in the white part (+46%). These data suggest that hindlimb unloading shifts the normal speedrelated increase in muscle effort from the red to the white compartment of the muscle. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.bio.unipd.it/bam/PDF/10-5/00444langlet.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
