Effect Of Static And Dynamic Stretching On Muscle Tendon Unit

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Other: stretching exercises

• Registration Number: NCT02428153
• Lead Sponsor: Tokat Gaziosmanpasa University

Brief Summary

The purpose of this study is to investigate the acute effects of two different types of muscle stretching (static and dynamic) on muscle-tendon unit of gastrocnemius muscle by ultrasound and to follow how long the stretching effects are sustained.

Detailed Description

Muscle stretching is a very common practice applied in warm-up process in order to enhance performance in sports and to prevent or decrease the risk of sports injury. Muscle stretching is also used for therapeutic purposes in many clinical conditions.

It is generally performed in either static or dynamic manner. Muscle is brought to its lengthened position and is held at that point for a certain period of time in static stretching (SS). In dynamic stretching (DS), however, active movements of muscle take the joint through the range of motion and creates a stretch, but the muscle is not held in the end position.

Although recent studies suggest that static stretching has adverse effects on performance, reduces maximal muscle force and is not successful in preventing non-contact injuries, as believed so; and the dynamic type therefore gaining popularity; it is reported that flexibility and range of motion can be improved by stretching as a consequence of the decrement in muscle stiffness. However, the effects of stretching depend on the type, duration and timing of stretching and there is still debate over which prescription provides the best results in terms of flexibility, power, performance or injury protection. And what happens to the viscoelastic properties of a muscle when it is stretched statically or dynamically is still not well documented. Ultrasound seems to be a good option as it offers an objective and a non-invasive way to expose the alteration in muscles and tendons due to stretching.

Study Timeline

• Study Start: 2015-04
• Study First Submitted: 2015-04-23
• Study First Submitted QC: 2015-04-27
• Study First Posted: 2015-04-28
• Primary Completion: 2015-05
• Status Verified: 2015-07
• Study Completion: 2015-07
• Last Update Submitted: 2015-07-23
• Last Update Posted: 2015-07-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Male
• Target Recruitment: 28

Inclusion Criteria

• Healthy males,
• aged between 18-30 years

Exclusion Criteria

• Cases with history of recent musculoskeletal injuries or neurological diseases.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
cases	stretching exercises	static and dynamic stretching exercises

Primary Outcome Measures

Name	Time	Method
muscle-tendon unit length	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching	change in muscle tendon unit property with static and dynamic exercises will be followed by ultrasound before, right after and 5, 15 and 30 minutes after the stretching exercises
pennation angle	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching	change in pennation angle of the gastrocnemius muscle with static and dynamic exercises will be followed by ultrasound before, right after and 5, 15 and 30 minutes after the stretching exercises
muscle thickness	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching	change in muscle thickness of the gastrocnemius muscle with static and dynamic exercises will be followed by ultrasound before, right after and 5, 15 and 30 minutes after the stretching exercises

Secondary Outcome Measures

Name	Time	Method
range of ankle dorsiflexion	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching	change in range of ankle dorsiflexion with static and dynamic exercises will be followed by ultrasound before, right after and 5, 15 and 30 minutes after the stretching exercises

Trial Locations

Locations (1)

Gaziosmanpasa University; 🇹🇷 Tokat, Turkey