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Randomized Controlled Trial
. 2018 Aug;97(33):e11792.
doi: 10.1097/MD.0000000000011792.

Effect of reducing assistance during robot-assisted gait training on step length asymmetry in patients with hemiplegic stroke: A randomized controlled pilot trial

Jin Seok Seo  1 , Hee Seung Yang, Suk Jung, Chang Soon Kang, Sunghun Jang, Dae Hyun Kim
Affiliations
Randomized Controlled Trial

Effect of reducing assistance during robot-assisted gait training on step length asymmetry in patients with hemiplegic stroke: A randomized controlled pilot trial

Jin Seok Seo et al. Medicine (Baltimore). 2018 Aug.

Abstract

Background: An assist-as-needed robot-assisted gait training protocol was recently developed. It allows active movement during training, but its exact criteria remain unknown. Asymmetric step length is a common abnormal gait pattern in hemiplegic stroke patients. We compared the effects of assist-as-needed robot-assisted gait training on the unaffected and affected limbs of hemiplegic stroke patients.

Method: Twenty-four chronic stroke patients with asymmetric step lengths were randomly assigned to 1 of 2 groups. Twelve completed the study protocol. Group 1 underwent 20 sessions of assist-as-needed robot-assisted gait training for the unaffected limb and fully-assisted robot-assisted training for the affected limb. Group 2 underwent 20 sessions of robot-assisted gait training using the opposite protocol. Clinical measurements were obtained and 3-dimensional gait analyses were performed at baseline and after 10 and 20 training sessions.

Results: Clinical measurements improved in both groups after 20 training sessions. The unaffected limb's step length asymmetry ratio and hip maximal extension moment significantly improved in group 1. The affected limb's maximal dorsiflexion angle for the ankle in the swing phase significantly improved in group 2.

Conclusion: Application of the assist-as-needed training mode for the unaffected limb helped improve step length asymmetry in chronic stroke patients.

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Conflict of interest statement

The authors have no conflicts of interest to disclose.

Figures

Figure 1
Figure 1
CONSORT flow diagram.
Figure 2
Figure 2
Changes in kinematic variables at baseline, after 10 sessions, and after 20 sessions of training.
See this image and copyright information in PMC

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