Muscle Activity of the Gastrocnemius and Soleus Muscles by Surface Electromyography.

NCT ID: NCT06953401

Last Updated: 2025-05-01

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Total Enrollment: 120 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2025-09-01
• Study Completion Date: 2025-12-01

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.

Conditions

Muscle Activity; Electromyography; Lower Limb

Study Design

• Observational Model Type: OTHER
• Study Time Perspective: CROSS_SECTIONAL

Interventions

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 includes 3 trials per muscle and side, using standardized test conditions.

Intervention Type: OTHER

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.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University of Extremadura

OTHER

Sponsor Role: lead

Responsible Party

Alejandro Caña Pino

Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

María Victoria CM María Victoria Cáceres Madrid, PhD

Role: PRINCIPAL_INVESTIGATOR

Departamento de Enfermería. Centro Universitario de Plasencia. Universidad de Extremadura

Olga LR Olga López Ripado, MSc

Role: PRINCIPAL_INVESTIGATOR

Departamento de Anatomía, Biología Celular y Zoología. Centro Universitario de Plasencia. Universidad de Extremadura

Alejando CP Alejandro Caña Pino, PhD

Role: PRINCIPAL_INVESTIGATOR

Departamento de Terapéutica Médico-Quirúrgica. Facultad de Enfermería y Terapia Ocupacional. Universidad de Extremadura

Marina FJ Fontán Jiménez, PhD

Role: PRINCIPAL_INVESTIGATOR

Departamento de Enfermería. Centro Universitario de Plasencia. Universidad de Extremadura

Raquel MA Raquel Mayordomo Acevedo, PhD

Role: STUDY_DIRECTOR

Departamento de Anatomía, Biología Celular y Zoología. Centro Universitario de Plasencia. Universidad de Extremadura

Locations

Centro Universitario de Plasencia

Plasencia, Cáceres, Spain

Countries

Spain

Central Contacts

Raquel MA Dra. Raquel Mayordomo Acevedo, PhD

Role: CONTACT

rmayordo@unex.es

927427000

Other Identifiers

150425

Identifier Type: -

Identifier Source: org_study_id