Muscle Activity of the Gastrocnemius and Soleus Muscles During a Specific Contraction Task Assessed by Surface Electromyography
Trial Snapshot
- Phase
- Not Applicable
- Status
- Not yet recruiting
- Sponsor
- Enrollment
- 120
- Locations
- 1
- Primary Endpoint
- Muscle activation, microvolts (μV)
Study Overview
Brief Summary
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.
Study Design
- Study Type
- Observational
- Observational Model
- Other
- Time Perspective
- Cross Sectional
Eligibility Criteria
- Ages
- 18 Years to 30 Years (Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
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.
Outcomes
Primary Outcomes
Muscle activation, microvolts (μV)
Time Frame: Baseline or Day 1. During a single assessment session (~30 minutes).
Muscle activation (μV) as recorded by mDurance® sEMG system during the contraction protocol (soleus vs. gastrocnemius).
Secondary Outcomes
- RMS (root mean square) and peak EMG signal values (μV)(Baseline or Day 1. During the same assessment session)
- Differences in muscle activity by contraction type (μV)(Baseline or Day 1. Immediately after the execution of each contraction type during the session)
- Activity differences by foot posture (pronated, neutral, supinated)(Baseline or Day 1. Immediately after foot posture assessment during the same session)
- Correlation with physical activity level Physical Activity Questionnaire (IPAQ-short version)(Baseline or Day 1. Collected at baseline before EMG assessment)
Investigators
Alejandro Caña Pino
Investigator
University of Extremadura