Acute Effects of Static Stretching Intensity and Duration on Muscle Viscoelastic Properties and Proprioception

Marmara University

Status: Completed

Conditions: Static Stretching

Treatments: Other: Static Stretching Exercise

Study type: Interventional

Funder types: Other

Identifiers

NCT04182139

09.2018.479

Details and patient eligibility

About

The purpose of this study is to compare the acute effects of different duration and intensity of static stretching exercises on the viscoelastic properties of the hamstring muscle and the knee proprioception.

Full description

Traditionally stretching exercises have been used by health professionals as a means of preventing injuries by increasing performance and increasing joint flexibility. Kubo et al. suggest that the potential mechanism of decreased risk of injury with increased flexibility is a change in the viscoelastic properties of the muscle-tendon unit. Muscle fibers and tendons contain proprioceptors. These receptors provide information about joint angle, muscle length and muscle tension. There are two stretch-related proprioceptors that transmit information to the central nervous system about muscle tension. These receptors are muscle spindles (respond to changes in the length) and golgi tendon organs (respond to changes in the tension). For this reason, interactions between muscle tension, muscle-tendon unit, viscoelasticity and proprioceptive tissue (muscle spindles and golgi tendon organ); it becomes important when you think about how stretching exercises affect proprioception, flexibility and increase or decrease of joint range of motion. In the literature, four stretching parameters have been defined as important to influence the potential for increasing or decreasing the flexibility of a joint: intensity, duration, frequency and stretching position. The focus of this study we plan on is the intensity and duration of stretching.

Exercise warming exercises before sportive activity and cooling exercises afterwards are widely suggested and applied. Determining the relationship between stretch severity and duration and viscoelastic properties and proprioception will contribute to the effective creation of training programs.

Enrollment: 216 patients

Sex: All

Ages: 18 to 45 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Being in the 18-45 age range.
• Volunteer to participate in the study.

Exclusion criteria

• Having had previous lower extremity operations.
• Having an orthopedic, neurological and rheumatologic disease of the lower extremities.
• Having open wound in the application area.
• Having had soft tissue injury in the last 6 weeks in the application area.

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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216 participants in 6 patient groups

30 seconds and %50 intensity stretching

Experimental group

Description:

The participants in this group performed an 30 seconds, %50 intensity static stretching exercise. 3 repetitive static stretching exercises did to hamstring muscles on the dominant side.

Treatment:

Other: Static Stretching Exercise

30 seconds and %75 intensity stretching

Experimental group

Description:

The participants in this group performed an 30 seconds, %75 intensity static stretching exercise. 3 repetitive static stretching exercises did to hamstring muscles on the dominant side.

Treatment:

Other: Static Stretching Exercise

30 seconds and %100 intensity stretching

Experimental group

Description:

The participants in this group performed an 30 seconds, %100 intensity static stretching exercise. 3 repetitive static stretching exercises did to hamstring muscles on the dominant side.

Treatment:

Other: Static Stretching Exercise

60 seconds and %50 intensity stretching

Experimental group

Description:

The participants in this group performed an 60 seconds, %50 intensity static stretching exercise. 3 repetitive static stretching exercises did to hamstring muscles on the dominant side.

Treatment:

Other: Static Stretching Exercise

60 seconds and %75 intensity stretching

Experimental group

Description:

The participants in this group performed an 60 seconds, %75 intensity static stretching exercise. 3 repetitive static stretching exercises did to hamstring muscles on the dominant side.

Treatment:

Other: Static Stretching Exercise

60 seconds and %100 intensity stretching

Experimental group

Description:

The participants in this group performed an 60 seconds, %100 intensity static stretching exercise. 3 repetitive static stretching exercises did to hamstring muscles on the dominant side.

Treatment:

Other: Static Stretching Exercise