Effects of 100 Hz sinusoidal vibration on H reflex and M wave in rat soleus muscle following immobilization.
- Author:
Xue-hong ZHAO
1
;
Xiao-li FAN
;
Xin-ai SONG
;
Lei SHI
Author Information
- Publication Type:Journal Article
- MeSH: Animals; Electromyography; Female; H-Reflex; physiology; Hindlimb Suspension; Muscle Contraction; physiology; Muscle Spindles; physiology; Muscle, Skeletal; physiology; Rats; Rats, Sprague-Dawley; Vibration
- From: Journal of Zhejiang University. Medical sciences 2011;40(5):545-549
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the effects of 100 Hz sinusoidal vibration on H reflex and M wave in rat soleus muscle following immobilization.
METHODSThe immobilization of rat soleus muscle was induced as a disuse muscle model, and 100 Hz sinusoidal vibration was generated by a vibrator and applied to the immobilized soleus muscle, then the changes of H reflex and M wave in muscle were observed after 14 d.
RESULTSCompared to control, after 14 d of immobilization M(max) in soleus muscle decreased (P<0.01), stimulus threshold and S(max) increased (P<0.01); Hmax and H(max)/M(max) decreased (P<0.05, S(max) increased (P<0.05). Compared to immobilized soleus muscle, after 14 d of immobilization with 100 Hz sinusoidal vibration, the M(max) increased(P<0.01), stimulus threshold and S(Mmax) decreased (P<0.05), H(max) (P<0.01) increased and H(max)/M(max) increased (P<0.05).
CONCLUSION100 Hz sinusoidal vibration plays a significant antagonist role against the changes in H reflex and M wave in rat soleus muscle following immobilization.
