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Completed

NCT Number: NCT06162130

Muscular Activations During Eccentric Quadriceps Exercises

The aim of this study is to investigate muscular activations during various quadriceps exercises commonly used in clinical settings.

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Key information

Conditions

ACL Injury Anterior Cruciate Ligament Injuries Knee Injuries Leg Injuries Muscle Weakness Muscular Diseases Musculoskeletal Diseases Nervous System Diseases Neurologic Manifestations Neuromuscular Manifestations Pathologic Processes Pathological Conditions, Signs and Symptoms Signs and Symptoms Sport Injury Sports Physical Therapy Wounds and Injuries

Age range

18 year–25 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Gazi University

Ankara, Turkey (Türkiye)

About this study

The quadriceps muscle is known to be crucial for the dynamic control of the lower extremity, and weakness in this muscle can lead to strategies that may result in injury. Therefore, acquiring optimal quadriceps muscle strength is essential not only for preventing lower extremity injuries but also for enabling individuals to fully return to activities after an injury.

Despite the existence of various eccentric quadriceps exercises in the literature, there is a lack of consensus on their comparative effectiveness. Hence, there is a requirement for research to explore the effectiveness of different eccentric quadriceps exercises. The objective of this study is to compare the muscular activation of the quadriceps muscle during four distinct eccentric quadriceps exercises using surface electromyography (sEMG) devices

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Being a licensed athlete in one's own field, Having been engaged in sports for at least 2 years

Exclusion criteria

Individuals with any musculoskeletal injury history in the lower extremities and trunk that could impede exercise within the last year, Individuals with systemic, neurological, and/or cognitive issues, Individuals experiencing pain in the lower extremities and trunk during exercises

Treatment and study plan

Eccentric quadriceps exercises

Diagnostic Test

The activation of the vastus medialis, vastus lateralis, and rectus femoris muscles will be measured using surface electromyography (sEMG) during four distinct quadriceps eccentric exercises: Reverse Nordic, Pistol squat, Suspension-based Bulgarian split squat, and Bulgarian split squat. Participants will be instructed to perform three successful repetitions for each exercise. A 30-second break will be provided between each repetition, and there will be a minimum of 10 minutes of rest between each of the four exercises. Due to the belief that fatigue could impact exercise performance, the modified Borg scale will be used to ensure that fatigue does not occur before each exercise. Exercise recording will commence when scores reported using the modified Borg scale are 1 or lower.

Primary outcomes

  1. Surface EMG Measurement

    Time frame: in an average of one hour

    During data collection, the EMG Noraxon MiniDTS system (Noraxon Inc.) was used to measure the signals from the muscle. Additionally, the participants were video-recorded to prevent any potential mistakes that might have gone unnoticed during the activities.

  2. Normalization of Surface EMG

    Time frame: in an average of one hour

    To normalize the EMG data obtained during the exercises, MVIC will be performed for each muscle using an isokinetic dynamometer. Participants will be shown a video demonstrating the movement for MVIC, and before the test, they will be asked to warm up for 5 minutes on a treadmill at submaximal speed and then perform the movement. To ensure electromyography (EMG) normalization, participants will be asked to perform 3 repetitions, and the average of these three values will be taken.

Sponsors and collaborators

Lead sponsor

Ordu University

Other

Registry information

Official study title

Investigation of Muscular Activations During Eccentric Quadriceps Exercises

Important dates

Study start
2024
Primary completion
2024
Study completion
2024
First posted
Dec 8, 2023
Registry last updated
Apr 4, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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