Background: A discrepancy between strength gain and gait changes following various training programs aimed at improving gait function after stroke has been noted. A mismatch between the training program and gait parameters could explain this finding.
Objective: To evaluate the impact of an isokinetic-strengthening program, matching the requirements of the affected lower-limb muscle groups involved in the energy generation of gait, to a control intervention, on gait performance and muscle strength.
Hypothesis: The isokinetic training program of the affected lower-limb muscles would produce greater changes in gait performance and strength than a control intervention not aiming at training these muscle groups.
Design: Single-blinded randomized controlled trial.
Participants: A convenient sample of 30 individuals with chronic hemiparesis.
Interventions: Participants were randomly assigned into two groups (n=15), each training three times/week for six weeks. The experimental group trained the affected plantarflexors, hip flexors and extensors concentrically, while the control group trained the affected upper-limb muscles.
Main outcome measures: Baseline values and post-training values, taken at the end of the training program, of maximal voluntary concentric strength, gait speed and peak positive power.
- Isokinetic lower-limb training Other
Intervention Desc: concentric training of the affected plantarflexors, hip flexors and hip extensors ARM 1: Kind: Experimental Label: isokinetic lower-limb training Description: 3 times/week for 6 weeks
- Isokinetic upper-limb training Other
Intervention Desc: concentric training of the affected wrist extensors, elbow flexors and shoulder flexors ARM 1: Kind: Experimental Label: isokinetic uppe-limb training Description: 3 times/week for 6 weeks
- Allocation: Randomized
- Masking: Single Blind (Outcomes Assessor)
- Purpose: Treatment
- Endpoint: Efficacy Study
- Intervention: Parallel Assignment
|Type||Measure||Time Frame||Safety Issue|
|Primary||change in gait speed||gait speed was assessed at baseline and at the completion of the 6-week training (i.e. week #7)||No|
|Primary||change in peak positive power||peak positive power was assessed at baseline and at the completion of the 6-week training (i.e. week #7)||No|
|Secondary||change in maximal voluntary concentric strength||maximal voluntary concentric strength was assessed at baseline and at the completion of the 6-week training (i.e. week #7)||No|