Immediate Effects of Hamstring Stretching Alone or Combined With Myofascial Release

Ankara Yildirim Beyazıt University

Status: Enrolling

Conditions: Temporomandibular Joint Disorders; Hamstring Injury; Masseter; Myofascial Release; Surface EMG; Stretching

Treatments: Procedure: Myofascial Release; Procedure: Static stretching

Study type: Interventional

Funder types: Other

Identifiers

NCT05702593

36442

Details and patient eligibility

About

To assess the immediate effects of hamstring stretching alone or combined with myofascial release of the hamstring muscle on masseter muscle activity, pressure pain threshold, active mouth opening, hamstring flexibility, and forward head flexed posture in recreationally active participants. The young, healthy, recreationally active adults aged 18-25 years were included in the study. The participants were randomly separated into two groups of equal number. Static stretching alone was applied to one group and this was combined with myofascial release techniques (SSMR) for the other group. Masseter muscle activity was assessed using a NORAXON® surface electromyography device. Both pre-and post-intervention, mechanical pressure algometer was used to measure the pressure pain threshold, hamstring flexibility was evaluated using the maximum hip flexion and active knee extension test, the maximum mouth opening (MMO) was measured with the millimetric ruler, and forward flexed posture was evaluated using the tragus to wall distance test.

Enrollment: 30 estimated patients

Sex: All

Ages: 18 to 30 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Individuals who had no previous hamstring injury
• Individuals had a Straight Leg Raise test <80°
• Individuals had a pressure-pain threshold difference between two symmetrical points not exceeding 2 kg/cm2
• Individuals who had no previous hamstring injury had no deviation during mouth opening and closing

Exclusion criteria

• acute low back pain or musculoskeletal pain in the lower extremities
• recent spinal surgery
• previous whiplash injury

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

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30 participants in 7 patient groups

Surface EMG Data Collection

Other group

Description:

For each subject, EMG activity was recorded from the left and right superficial masseter muscles using a multichannel EMG device.The EMG recordings were obtained with three repetitions during mandibular rest, and maximal voluntary isometric contractions (MVIC) in intercuspation (isometry) pre and post-treatment. The EMG data were recorded for 5 seconds, and three trials with 30 seconds of rest between contractions were performed \[Tosato, SENIAM\].

Treatment:

Procedure: Myofascial Release

Procedure: Static stretching

Pressure pain threshold

Other group

Description:

The pressure pain threshold was measured using a mechanical pressure algometer (model Baseline® Dolorimeters - Fabrication Enterprises Inc) with a contact head of 1 cm2 area.

Treatment:

Procedure: Myofascial Release

Procedure: Static stretching

Maximum Active Mouth Opening (MMO)

Other group

Description:

A tape measure was used to determine the maximum active mouth opening (MMO).

Treatment:

Procedure: Myofascial Release

Procedure: Static stretching

Hamstring Flexibility

Other group

Description:

The Maximal Hip Flexion Active Knee Extension (MHFAKE) Test, which is an adapted active knee extension test, was performed to evaluate the hamstring flexibility of the participant.

Treatment:

Procedure: Myofascial Release

Procedure: Static stretching

Tragus Wall Distance

Other group

Description:

Tragus wall distance measurement was used to evaluate spinal mobility.

Treatment:

Procedure: Myofascial Release

Procedure: Static stretching

Static stretching

Experimental group

Description:

The participant was positioned supine for static stretching to be applied to the hamstring muscles

Treatment:

Procedure: Static stretching

Myofascial Release

Experimental group

Description:

For hamstring muscles, the participants were asked to assume a long sitting position on a firm, flat surface with their arms behind their backs and their body weight on their palms.

Treatment:

Procedure: Myofascial Release