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document
Immediate effects of a tibiofibular joint manipulation on lower extremity H-reflex measurements in individuals with chronic ankle instability . Persistent muscle inhibition of the fibularis longus and soleus muscles and altered joint arthrokinematics may play a role in chronic ankle instability ( CAI ) . Joint mobilization has been shown to improve ankle joint motion , but effects on surrounding musculature is unknown . The purpose of this study was to determine the change in fibularis longus and soleus activation following tibiofibular joint manipulation in individuals with CAI . Forty-three subjects were randomized to one of three groups ( proximal tibiofibular manipulation , distal tibiofibular manipulation , or control ) . A two-way mixed model ANOVA was used to compare changes in the ratio of the maximum H-reflex and maximum M-wave measurements ( H/M ratio ) of the fibularis longus and soleus between groups over time ( pre , post 0 , 10 , 20 , 30 min ) . The distal tibiofibular joint manipulation group demonstrated a significant increase ( P < .05 ) in soleus H/M ratio at all post-intervention time periods except 20 min post-intervention ( P=.48 ) . The proximal tibiofibular joint manipulation and control groups did not demonstrate a change in soleus H/M ratios . All groups demonstrated a decrease ( P < .05 ) from baseline values in fibularis longus ( 10-30 min post-intervention ) and soleus ( 30 min post-intervention ) H/M ratios . Interventions directed at the distal tibiofibular joint acutely increase soleus muscle activation .
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Intervention_Physical
tibiofibular joint manipulation
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Intervention_Physical
tibiofibular joint manipulation
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Intervention_Physical
proximal tibiofibular manipulation
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Intervention_Physical
distal tibiofibular manipulation
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Intervention_Control
control
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Intervention_Physical
tibiofibular joint manipulation
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Intervention_Physical
tibiofibular joint manipulation
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Intervention_Control
control
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Outcome_Physical
H-reflex measurements
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Outcome_Physical
maximum H-reflex
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Outcome_Physical
maximum M-wave measurements
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Outcome_Physical
soleus H/M ratio
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Outcome_Physical
soleus H/M ratios
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Outcome_Physical
fibularis longus
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Outcome_Physical
soleus
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Outcome_Physical
H/M ratios
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Outcome_Physical
soleus muscle activation
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Participant_Condition
chronic ankle instability
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Participant_Condition
chronic ankle instability ( CAI )
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Participant_Condition
CAI
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Participant_Sample-size
Forty-three