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Training intensity of robot-assisted gait training in children with cerebral palsy
Ja Young Choi1, Li Hua Jin1,2, Min Soo Jeon1,3
1Department of Physical and Rehabilitation Medicine, Chungnam National University Hospital, Chungnam National University College of Medicine, Daejeon, Republic of Korea.
Insights
Robot-assisted gait training (RAGT) for children with cerebral palsy (CP) showed varied outcomes based on intensity. Individualizing RAGT intensity is key for optimal rehabilitation results in CP.
Area of Science:
- Pediatric Rehabilitation
- Robotics in Medicine
- Neurological Disorders
Background:
- Cerebral palsy (CP) affects motor function in children.
- Robot-assisted gait training (RAGT) is a potential therapeutic intervention.
- Optimizing RAGT intensity is crucial for maximizing benefits.
Purpose of the Study:
- To compare the effectiveness of three different robot-assisted gait training (RAGT) intensities.
- To identify optimal RAGT intensity for children with cerebral palsy (CP).
- To evaluate outcomes across motor function, gait, and functional independence measures.
Main Methods:
- Randomized controlled, single-blind trial with 30 children (CP GMFCS levels II-III).
- Three RAGT intensity groups: high (fast speed, low body weight support), low (slow speed, high body weight support), and comfortable (intermediate).
- Intervention delivered 3x/week for 6 weeks; outcomes measured by GMFM, stability index, gait analysis, PIM, and COPM.
Main Results:
- High-intensity and comfortable-intensity RAGT significantly improved Gross Motor Function Measure (GMFM) scores.
- Comfortable-intensity RAGT showed improvements in gait speed.
- Low-intensity RAGT uniquely improved the stability index; all groups improved functional performance, with comfortable intensity yielding the most significant gains.
Conclusions:
- Different RAGT intensities target distinct areas of functional improvement in children with CP.
- Individualized RAGT intensity selection is recommended based on specific rehabilitation goals.
- Tailoring RAGT intensity can optimize therapeutic outcomes for pediatric CP.
Aim:
We compared three different intensities of robot-assisted gait training (RAGT) for achieving favourable outcomes in children with cerebral palsy (CP).
Method:
This study was conducted using a randomized controlled, single-blind design. Thirty children (19 males and 11 females; mean age 6 years 1 month, SD 2 years) with CP classified in Gross Motor Function Classification System levels II and III were assigned to three different RAGT intensity groups: high-intensity (fastest walking speed and lowest body weight support [BWS]), low-intensity (slowest speed and highest BWS), and comfortable intensity (intermediate speed and intermediate BWS). The RAGT intervention was performed three times a week for 6 weeks. Outcome measures included the 88-item Gross Motor Function Measure, stability index, spatiotemporal parameters of gait analysis, paediatric functional independence measure, and the Canadian Occupational Performance Measure.
Results:
The 88-item Gross Motor Function Measure was significantly improved after training in the high-intensity (D Δ8.3 ± 15.6; E Δ3.8 ± 4.1) and comfortable intensity (D Δ2.9 ± 3.1; E Δ1.2 ± 2.0) groups, whereas gait speed was improved in the comfortable intensity group, without statistically significant group differences. Only the low-intensity group showed improvement on the stability index (Δ -0.6 ± 0.9, p = 0.05). Everyday functional performance significantly improved in all three groups, with the comfortable intensity group showing the greatest improvement.
Interpretation:
Different training intensities produced improvement in different areas; individualized RAGT intensity adjustment is therefore needed based on the rehabilitation goal.
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