Efficacy of Shock Wave Therapy in Post-Stroke Muscle Spasticity Management

Not Applicable

Not yet recruiting

• Conditions: Stroke; Spasticity; Post-stroke; Muscle Hypertonia; Neurological Disorders; Physiotherapy

• Registration Number: NCT06815328
• Lead Sponsor: University of Oviedo

Brief Summary

The goal of this clinical trial is to evaluate the efficacy and safety of shock wave therapy (SWT) in reducing muscle spasticity in patients who have suffered a stroke. The main questions it aims to answer are:

Does SWT reduce muscle tone and improve joint range of motion in post-stroke patients with spasticity? Does SWT improve the quality of life for these patients? What side effects, if any, occur during or after SWT? Researchers will compare SWT to conventional spasticity treatments to determine its effectiveness and potential advantages.

Participants will:

Undergo SWT sessions as part of their rehabilitation protocol over a period of 8 weeks.

Attend follow-up visits to assess muscle tone, joint mobility, and overall functional improvement.

Complete quality-of-life questionnaires to measure the therapy's impact on daily living.

Detailed Description

This study aims to assess the efficacy and safety of Shock Wave Therapy (SWT) as a non-invasive treatment for muscle spasticity in post-stroke patients. Muscle spasticity is a major complication in neurorehabilitation, affecting mobility, functionality, and quality of life. Conventional treatments, including physical therapy, oral medications, and botulinum toxin injections, have limitations such as variable efficacy, side effects, and accessibility issues. SWT has gained interest as a potential alternative, but high-quality evidence regarding its effectiveness and safety in this population remains scarce.

Study Design and Rationale The study is designed as a prospective, randomized controlled trial (RCT) comparing SWT with conventional treatment approaches. SWT delivers mechanical acoustic waves to targeted spastic muscles, aiming to reduce hypertonicity and neuromuscular dysfunction. The hypothesized mechanism of action involves neuromuscular modulation, local tissue repair promotion, and increased vascularization, which may improve muscle tone, functional mobility, and overall patient outcomes.

Participants will undergo weekly SWT sessions for 8 weeks, each lasting approximately 30 minutes. Treatment will be applied to specific muscle groups, such as the elbow flexors, wrist flexors, or calf muscles, based on baseline assessments. The frequency, intensity, and duration of SWT will follow current clinical guidelines.

The control group will receive standard care, which may include physical therapy techniques such as stretching, therapeutic exercises, and pharmacological management as per clinical indication. The study will implement a blinded assessment process, where outcome evaluators will not be aware of group allocation.

Technical Aspects of SWT Application The SWT intervention will be conducted using a focused or radial shock wave device, applying preset intensity levels tailored to spastic muscle groups. The wave frequency and energy flux density will be determined based on prior research in musculoskeletal rehabilitation. SWT will be delivered at specific treatment points over affected muscles, with adjustments as necessary according to patient response and tolerability.

Data Collection and Monitoring Data will be collected at baseline, mid-treatment (week 4), and post-treatment (week 8) using standardized clinical assessment tools. The study will also monitor for adverse events, including pain, bruising, or transient increases in spasticity, to establish a safety profile for SWT in this population.

Potential Clinical Impact If SWT demonstrates clinically significant benefits, this study could support its integration into routine post-stroke rehabilitation protocols. The findings may provide guidance for rehabilitation professionals, contribute to cost-effective management strategies, and inform clinical decision-making regarding spasticity treatment.

Ethical Compliance This study adheres to the principles of the Declaration of Helsinki and has been submitted for approval to the appropriate institutional review boards. Participants will provide written informed consent before enrollment. All collected data will be handled following confidentiality and ethical guidelines.

Study Timeline

• Study First Submitted: 2025-01-24
• Study First Submitted QC: 2025-02-05
• Study First Posted: 2025-02-07
• Status Verified: 2025-03
• Last Update Submitted: 2025-03-09
• Last Update Posted: 2025-03-12
• Study Start: 2025-03-15
• Primary Completion: 2025-03-30
• Study Completion: 2025-04-30

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 50

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Change in Muscle Spasticity	Baseline, at 10 weeks (end of intervention), and at 12 weeks (follow-up).	Measurement of changes in muscle tone using the Modified Ashworth Scale (MAS) from baseline to the end of the treatment period. The MAS ranges from 0 (no increase in muscle tone) to 4 (affected part rigid in flexion or extension).; Units of Measure: Score from 0 to 4. Lower MAS scores indicate reduced spasticity.

Secondary Outcome Measures

Name	Time	Method
Incidence of Treatment-Related Adverse Events	Throughout the study period (12 weeks).	Measurement of the number and nature of adverse events reported during the study, including pain, discomfort, or other side effects related to the interventions.; Units of Measure: Count of reported adverse events.
Walking Speed	Baseline, at 10 weeks (end of intervention), and at 12 weeks (follow-up).	Change in walking speed, assessed using the 10-Meter Walk Test (10MWT). A shorter time to complete the 10-meter distance indicates better functional mobility.; Units of Measure: Time in seconds (s).
Change in Joint Range of Motion	Baseline, at 10 weeks (end of intervention), and at 12 weeks (follow-up).	Measurement of changes in joint range of motion (in degrees) using a goniometer, focusing on affected joints. A higher degree value indicates better joint mobility.
Change in Quality of Life	Baseline and at 12 weeks (follow-up).	Change in patient-reported quality of life using the Stroke Impact Scale (SIS). Units of Measure: Score from 0 to 100. Higher scores indicate better quality of life.
Grip Strength	Baseline, at 10 weeks (end of intervention), and at 12 weeks (follow-up).	Change in grip strength, measured using a hand dynamometer. A higher grip strength value indicates better muscle function and recovery.; Units of Measure: Kilograms (kg).

Trial Locations

Locations (1)

University of Oviedo; 🇪🇸 Oviedo, Asturias, Spain