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Recruiting NCT05649930

NCT05649930 Effect of Functional Power Training on Calf Muscle Length and Strength in Children With Spastic Paresis

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Clinical Trial Summary
NCT ID NCT05649930
Status Recruiting
Phase
Sponsor Amsterdam UMC, location VUmc
Condition Cerebral Palsy, Spastic
Study Type OBSERVATIONAL
Enrollment 23 participants
Start Date 2022-06-20
Primary Completion 2025-04-30

Eligibility & Interventions

Sex All sexes
Min Age 4 Years
Max Age 18 Years
Study Type OBSERVATIONAL
Interventions
Functional power training

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

This is an observational study. You will not receive an experimental treatment; researchers will collect data based on your existing condition or standard treatment.

This trial targets 23 participants in total. It began in 2022-06-20 with a primary completion date of 2025-04-30.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

Brief Summary

Spastic paresis (SP) is a common motor condition in children and is often caused by cerebral palsy. Skeletal muscles develop differently in children with SP due to brain damage in early development; muscle strength and muscle length are reduced compared to typically developing (TD) children. Especially, the calf muscles are affected, which particularly affects their ability to walk and to run, hindering participation in society. There are several treatments aimed to increase the range of motion of the joint by lengthening the muscle, for example botulinum toxin injections. However, these treatments can have a weakening effect on the muscle due to deconditioning from immobilization and due to paralysis. In rehabilitation centers in the Netherlands functional power training (MegaPower) is offered to children with SP who want to walk and run better. It has been shown that this training improves calf muscle strength and performance during functional walking tests. However, the effect of MegaPower training on muscle morphology (i.a. muscle volume and length) is still unknown. Therefore, the aim of this study is to assess the effect of MegaPower training on the muscle morphology of the medial gastrocnemius in children with SP using 3D ultrasonography. It is expected that MegaPower training results in an increase of muscle volume as well as elongation of the muscle belly. Muscle volume could increase due to hypertrophy of the muscle fibers induced by the training, which could elongate the muscle belly length due to the pennate structure of the medial gastrocnemius. A double-baseline design will be applied for this study with three different measurement times (T0-T1-T2) to compare the training period (12 weeks) with a period (12 weeks) of usual care.

Eligibility Criteria

Inclusion Criteria: * Gross Motor Function Classification System I-III * Children should be able to lie on their stomach for min. one minute * Children should be able to follow instructions. Exclusion Criteria: * Received (one of) the following interventions within six months: * Casting * Botulinum toxin type-A injections * Orthopedic surgery.

Contact & Investigator

Central Contact

Marjolein M van der Krogt, Dr.

✉ m.vanderkrogt@amsterdamumc.nl

📞 (20)4440789

Principal Investigator

Marjolein M van der Krogt, Dr.

PRINCIPAL INVESTIGATOR

Amsterdam UMC, location VUmc

Frequently Asked Questions

Who can join the NCT05649930 clinical trial?

This trial is open to participants of all sexes, aged 4 Years or older, up to 18 Years, studying Cerebral Palsy, Spastic. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

Is NCT05649930 currently recruiting?

Yes, NCT05649930 is actively recruiting participants. Contact the research team at m.vanderkrogt@amsterdamumc.nl for enrollment information.

Where is the NCT05649930 trial being conducted?

This trial is being conducted at Amsterdam, Netherlands.

Who is sponsoring the NCT05649930 clinical trial?

NCT05649930 is sponsored by Amsterdam UMC, location VUmc. The principal investigator is Marjolein M van der Krogt, Dr. at Amsterdam UMC, location VUmc. The trial plans to enroll 23 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: April 2026  ·  Data Methodology