Muscle Activity of the Gastrocnemius and Soleus Muscles by Surface Electromyography.
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Muscle contraction protocol for electromyographic assessment.
- Who it may be relevant to
- Registry conditions: Muscle Activity, Electromyography, Lower Limb. Basic parameters: 18 years — 30 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Spain
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Muscle Activity of the Gastrocnemius and Soleus Muscles During a Specific Contraction Task Assessed by Surface Electromyography
Overview
This cross-sectional, comparative study aims to evaluate and compare the surface electromyographic (sEMG) activity of the gastrocnemius (medial and lateral) and soleus muscles during static and dynamic contraction tasks. Participants will perform three tests-resting state, isometric, concentric, and eccentric contraction, and dynamic gait-with bilateral measurements. A subgroup analysis will examine muscle activity variations based on foot posture, using the Foot Posture Index (FPI). The study uses the validated mDurance® sEMG system to obtain objective data under controlled lab conditions. The findings will enhance understanding of the functional role of each muscle and could inform rehabilitation and injury prevention strategies.
Interventions
- Other Muscle contraction protocol for electromyographic assessment
Participants will perform a set of standardized lower limb muscle contractions (isometric, concentric, and eccentric) involving the gastrocnemius and soleus muscles while lying on an examination table and in standing position both static and dynamic as well as walking. Surface electromyography (mDurance® sEMG system) will be used to record muscle activation during each phase. The task is designed for physiological measurement only and does not constitute a therapeutic intervention. Protocol incl
Primary outcome measures
- Muscle activation, microvolts (μV) [Time frame: Baseline or Day 1. During a single assessment session (~30 minutes).]
Secondary outcome measures (4)
- RMS (root mean square) and peak EMG signal values (μV) [Time frame: Baseline or Day 1. During the same assessment session]
- Differences in muscle activity by contraction type (μV) [Time frame: Baseline or Day 1. Immediately after the execution of each contraction type during the session]
- Activity differences by foot posture (pronated, neutral, supinated) [Time frame: Baseline or Day 1. Immediately after foot posture assessment during the same session]
- Correlation with physical activity level Physical Activity Questionnaire (IPAQ-short version) [Time frame: Baseline or Day 1. Collected at baseline before EMG assessment]
Eligibility criteria
Inclusion criteria
- Age between 18 and 30 years.
- No history of severe musculoskeletal disorders in the lower limbs.
- No recent surgery or injury in the last 6 months.
- No dermatological conditions affecting electrode placement.
- Not allergic to adhesives.
- Ability to perform the task without limitation.
•. No high-intensity exercise in the 12 hours before testing
- Ability to provide informed consent and complete the assessment
Exclusion criteria
- Reduced lower limb mobility.
- Neuromuscular or skeletal conditions affecting the calf region.
- Intense physical activity 12 hours before testing.
- Lack of informed consent.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: Yes
Study design
- Observational model
- Other
Study locations
Spain · 1 center
- Centro Universitario de Plasencia — Plasencia
Identifiers
NCT: NCT06953401 · 150425