Effect Of Static And Dynamic Stretching On Muscle Tendon Unit

Investigation Of Muscle-Tendon Unit By Ultrasound After Static And Dynamic Stretching

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.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Other: stretching exercises

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 Type: Interventional
• Enrollment (Actual): 28
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • Tokat, Turkey, 60100
    • Gaziosmanpasa University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 30 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Healthy males,
• aged between 18-30 years

Exclusion Criteria:

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

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Screening
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: cases; static and dynamic stretching exercises	Other: stretching exercises; static stretching exercise of 5 repetitions, with a duration of 45 seconds to the right gastrocnemius muscle and dynamic stretching exercise of 5 repetitions, with a duration of 45 seconds to the cases' left gastrocnemius muscles; Other Names: static stretching exercise; dynamic stretching exercise

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
muscle-tendon unit length	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	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching
pennation angle	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	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching
muscle thickness	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	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
range of ankle dorsiflexion	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	before stretching exercises and just after the stretching exercises and 5, 15 and 30 minutes after stretching

Collaborators and Investigators

• Sponsor: Tokat Gaziosmanpasa University
• Investigators: Principal Investigator: Funda DEMIRTURK, PhD, Gaziosmanpasa University

Study record dates

Study Major Dates

• Study Start: April 1, 2015
• Primary Completion (Actual): May 1, 2015
• Study Completion (Actual): July 1, 2015

Study Registration Dates

• First Submitted: April 23, 2015
• First Submitted That Met QC Criteria: April 27, 2015
• First Posted (Estimate): April 28, 2015

Study Record Updates

• Last Update Posted (Estimate): July 24, 2015
• Last Update Submitted That Met QC Criteria: July 23, 2015
• Last Verified: July 1, 2015

More Information

Terms related to this study

• Keywords: ultrasound; Subjects; static stretching; dynamic stretching; muscle-tendon unit
• Other Study ID Numbers: 15-KAEK-025 (Ethics Committee)