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Random perturbation: a potential aid in treatment of children with cerebral palsy
S Bar-Haim1, N Harries, M Belokopytov
1Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel. netah@asaf.health.gov.il
Insights
Random perturbations (RP) enhanced intensive physiotherapy for children with cerebral palsy (CP). This approach improved mechanical efficiency (MEg) during complex motor tasks, suggesting RP can increase flexibility and treatment effectiveness.
Area of Science:
- Biomedical Engineering
- Neurorehabilitation
- Pediatric Physical Therapy
Background:
- Children with cerebral palsy (CP) often exhibit motor behaviors characterized by rigidity and limited adaptability.
- This rigidity can hinder their ability to perform tasks effectively and respond to physical therapy.
Purpose of the Study:
- To investigate if random perturbations (RP) can reduce motor rigidity in children with CP.
- To evaluate the impact of RP on gross motor function and mechanical efficiency (MEg) during intensive physiotherapy.
Main Methods:
- A study involving 20 children with CP, matched for age and GMFCS level.
- Participants were randomly assigned to either structured intensive treatment (SIT) or SIT combined with RP (SIT + RP) for one month.
- RP involved engine-induced passive cycling for limbs; outcomes measured included the Gross Motor Function Measure (GMFM)-66 and MEg during stair climbing.
Main Results:
- Both groups showed similar improvements in GMFM-66 scores.
- The SIT + RP group demonstrated significantly greater increases in external work and MEg compared to the SIT group.
- The enhanced MEg in the SIT + RP group was observed regardless of the child's initial motor function level.
Conclusions:
- Adding RP to physiotherapy may help break stereotypical motor patterns and introduce motor flexibility in children with CP.
- RP has the potential to augment the benefits of intensive physical therapy, particularly improving mechanical efficiency in complex movements.
Background And Purpose:
The motor behaviour of children with cerebral palsy (CP) can be viewed in terms of a stable mode with very little flexibility that prevents adaptation to tasks. We hypothesized that the use of random perturbations (RP) would weaken excessive stability, introduce flexibility and enhance the effects of physical treatment. The objective was to evaluate the contribution of RP to gross motor function and mechanical efficiency (MEg) during intensive physiotherapy in children with CP.
Methods:
A convenience sample of 20 children with CP (mean age 8.2, range: 5.9-12.9 yrs) were matched by age and GMFCS level, and randomly assigned to structured intensive treatment (SIT) or to SIT + RP groups. Groups received one month of daily treatment. RP was applied by engine-induced random passive cycling for upper and lower limbs for up to 10 min in a 90-min treatment session. Gross Motor Function Measure (GMFM)-66 and gross mechanical efficiency (MEg) during stair climbing (MEg) were measured before and after treatment.
Results:
GMFM-66 scores increased by about 1.0 in both groups. However, external work and MEg increased significantly more in SIT + RP than SIT. The increase in MEg in SIT + RP was independent of the level of motor function at baseline.
Conclusion:
The addition of RP in treatment of children with CP may have weakened previously established stereotypical motor patterns and introduced flexibility, thereby improving mechanical efficiency of a complex motor task. RP may enhance the effects of intensive treatment.
