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Operant Conditioning of the Soleus Stretch Reflex in Adults With Cerebral Palsy

Operant Conditioning of the Soleus Stretch Reflex in Adults With Cerebral Palsy

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05571033
Acronym
SRC-CP
Enrollment
12
Registered
2022-10-07
Start date
2022-09-30
Completion date
2026-12-31
Last updated
2023-09-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cerebral Palsy, Spastic Cerebral Palsy

Keywords

Hoffman Reflex, Spinal Reflex Conditioning

Brief summary

12 adults with spastic CP will complete 6 baseline sessions and 24 down conditioning sessions held 3 times/week. All clinical and physiological assessments collected at baseline will be reassessed after study completion, and follow ups after 2 weeks, 1 month and 3 months. The soleus H reflex (electric analogue of the stretch reflex) will be elicited in all sessions. In each session, participants will complete 20 baseline trials and 225 down conditioning trials to decrease the magnitude of the H-Reflex.

Detailed description

Individuals with CP face significant challenges due to spasticity that causes activity and participation restrictions with increase in secondary conditions. This is caused by injury to the upper motor neurons causing disruption to the neural circuitry responsible for maintaining motor tone. A novel intervention, OC of the H reflex has shown promising effects to reduce spasticity and improve motor function in people with stroke and spinal cord. Its many known benefits include easy administration, non-invasive technique, no side effects, and long-term retention. In the study, the investigators will attempt to decrease the increased muscle tone of individuals with CP. If successful, it will not only provide evidence for future clinical application but also broaden the scope for alternate or supplementary non-invasive treatment approaches to decrease spasticity.

Interventions

BEHAVIORALSpinal reflex conditioning

Each participant will serve as their own control. The intervention is 30 sessions. The first 6 sessions are baseline measures of reflexes. The remaining sessions will engage participants in learning how to decrease their reflex activity in their calf muscle on the more-affected leg. Each intervention visit will involve 20 trials in which participants do not get visual feedback about their performance, then 225 trials with visual feedback.

Sponsors

Burke Medical Research Institute
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Each participant will serve as their own control.

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

1. Age 18 and above 2. Diagnosis of spastic Cerebral Palsy 3. Gross Motor Function Classification System level I-III 4. Stable medical background 5. Current medication will remain unchanged for 3 months 6. Provides informed consent 7. can walk at least 10 meters with or without assistive device 8. meets minimum study procedure requirements (elicitation of H-reflex).

Exclusion criteria

1. Pregnancy 2. uncontrolled diabetes 3. weak dorsiflexion 4. History of cardiac conditions 5. cognitive deficits that interfere with study procedure and steps for completion 6. Botox within 2 months of the study 7. H/O ankle surgeries in affected leg (Dorsal root rhizotomy etc.) 8. regular use of electrical stimulation to lower extremity muscles 9. Cochlear or metal implantations on body 10. No history of seizure after age 2 years 11. Current use of antiseizure medicines 12. Any metal or magnetic components in the head (surgical clips, metal work etc.) 13. Implanted device or cardiac pacemakers (applicable for DS8R too) 14. Skin disorders 15. Damaged skin (wounds, broken skin, or recent scar tissue) 16. Allergy to latex (tape)

Design outcomes

Primary

MeasureTime frameDescription
Soleus H-Reflex sizeWithin one week before first intervention session to within one week after the end of interventionSize of h-reflex as measured by EMG
AttendanceAt the end of the intervention, we will count the number of sessions each participant completedMeasure of feasibility of protocol, whether or not people can attend all sessions

Secondary

MeasureTime frameDescription
Fugl-MeyerWithin one week before the first intervention session to within one week after the end of interventionStandardized test of motor skill, range of motion, and spasticity
Modified Ashworth ScaleWithin one week before the first intervention session to within one week after the end of interventionMeasure of muscle spasticity in leg muscles
Range of motionWithin one week before the first intervention session to within one week after the end of interventionMeasure of flexibility of leg joints
Fatigue Severity ScaleWithin one week before the first intervention session to within one week after the end of interventionA survey of fatigue symptoms
Berg Balance ScaleWithin one week before the first intervention session to within one week after the end of interventionMeasure of participant's ability to balance
Timed up and GoWithin one week before the first intervention session to within one week after the end of interventionMeasure of how quickly a participant can stand from a chair, walk, return to chair, and sit
Sit to Stand TestWithin one week before the first intervention session to within one week after the end of interventionTime it takes for a participant can stand up five times in a row
Patient Reported Outcome Measures (PROMIS) Anxiety question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about anxiety
Patient Reported Outcome Measures (PROMIS) Fatigue question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about fatigue
Patient Reported Outcome Measures (PROMIS) Depression question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about depression
Patient Reported Outcome Measures (PROMIS) General Life Satisfaction question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about General Life Satisfaction
Patient Reported Outcome Measures (PROMIS) General Self Efficacy question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about General Self Efficacy
10 meter walk testWithin one week before the first intervention session to within one week after the end of interventionMeasure of how long it takes the participant to walk 10 meters
Patient Reported Outcome Measures (PROMIS) Self-Efficacy for Managing Chronic Conditions question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about Self-Efficacy for Managing Chronic Conditions
Patient Reported Outcome Measures (PROMIS) Sleep Disturbances question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about sleep
Patient Reported Outcome Measures (PROMIS) Pain Interference question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about pain
Patient Reported Outcome Measures (PROMIS) Ability to Participate in Social Roles and Activities question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about Ability to Participate in Social Roles and Activities
Patient Reported Outcome Measures (PROMIS) Physical FunctionWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about physical functioning
Patient Reported Outcome Measures (PROMIS) Satisfaction with Social Roles and ActivitiesWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about Satisfaction with Social Roles and Activities
Patient Reported Outcome Measures (PROMIS) Mobility question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about mobility
Patient Reported Outcome Measures (PROMIS) Social Isolation question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about isolation
Patient Reported Outcome Measures (PROMIS) Upper Extremity question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about hand and arm function
Change in size of motor evoked potential in the brainWithin one week before the first intervention session to within one week after the end of interventionUsing single pulse transcranial magnetic stimulation, we will measure the amount of energy required to evoke a leg muscle movement from a stimulus delivered to the head
Manual Ability Classification SystemWithin one week before the first intervention session to within one week after the end of interventionA categorical measure of how well a participant can move their hands
Jebsen-Taylor Test of Hand FunctionWithin one week before the first intervention session to within one week after the end of interventionA timed test that measures how quickly the participant can move checkers, cans, and small objects
Patient Reported Outcome Measures (PROMIS) Meaning and Purpose question bankWithin one week before the first intervention session to within one week after the end of interventioncomputer-based survey for participants to answer questions about Meaning and Purpose
6 minute walk testWithin one week before the first intervention session to within one week after the end of interventionMeasure the distance a participant can walk in 6 min

Countries

United States

Contacts

Primary ContactDevina Kumar, PhD
dek4004@med.cornell.edu914-368-3160

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026