Neurodynamic Sliders Promote Flexibility in Tight Hamstring Syndrome

NCT ID: NCT05652452

Last Updated: 2022-12-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

50 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-01-31

Study Completion Date

2018-07-31

Brief Summary

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The goal of this study is to explore the intervention effect of home-based neurodynamic slider program on hamstring flexibility. Fifty physically active male subjects will be randomly assigned to either performing a neurodynamic sliding technique (3x20 reps) or a static stretching protocol (3x30") on a daily basis for a 6-week period. Hamstring flexibility will be assessed by means of the Straight Leg Raise at baseline, immediately after the intervention and after 4 weeks follow up.

Detailed Description

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Conditions

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Hamstring Injury Neurodynamics Range of Motion

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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Neurodynamics

Group Type EXPERIMENTAL

Neurodynamics

Intervention Type OTHER

Subjects in the neurodynamic group performed the 'Seated Straight Leg Slider' (SSLS) (Fig.1). To execute this sliding technique, subjects assumed a seated slump position (thoracic and lumbar flexion) which they needed to maintain throughout the exercise. This SSLS consisted of alternating movements towards knee extension and ankle dorsiflexion (increase of neural tension) combined with cervical extension (decrease of neural tension) on one hand, and knee flexion and ankle plantar flexion (decrease neural tension) combined with cervical flexion (increase of neural tension) on the other. During this 6-week period, each subject in this neurodynamic slider group was instructed to perform 3 sets of 20 repetitions on a daily basis for 6 weeks.

Static stretch

Group Type ACTIVE_COMPARATOR

Static stretch

Intervention Type OTHER

Subjects in the control group were instructed to perform a standard standing static stretch with the heel of the dominant leg taking support on a chair. Then they had to move the pelvis into anteversion, simultaneously inducing a forward lean of the trunk, until the clear sensation of hamstring stretch was perceived at the posterior aspect of the thigh. Again, the execution of the exercise was thoroughly explained and evaluated by the researchers and subjects sent home with a comprehensive instruction guide and supporting pictures. Each subject was instructed to do 3 repetitions of 30 second static stretches on a daily basis during the 6-week intervention.

Interventions

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Neurodynamics

Subjects in the neurodynamic group performed the 'Seated Straight Leg Slider' (SSLS) (Fig.1). To execute this sliding technique, subjects assumed a seated slump position (thoracic and lumbar flexion) which they needed to maintain throughout the exercise. This SSLS consisted of alternating movements towards knee extension and ankle dorsiflexion (increase of neural tension) combined with cervical extension (decrease of neural tension) on one hand, and knee flexion and ankle plantar flexion (decrease neural tension) combined with cervical flexion (increase of neural tension) on the other. During this 6-week period, each subject in this neurodynamic slider group was instructed to perform 3 sets of 20 repetitions on a daily basis for 6 weeks.

Intervention Type OTHER

Static stretch

Subjects in the control group were instructed to perform a standard standing static stretch with the heel of the dominant leg taking support on a chair. Then they had to move the pelvis into anteversion, simultaneously inducing a forward lean of the trunk, until the clear sensation of hamstring stretch was perceived at the posterior aspect of the thigh. Again, the execution of the exercise was thoroughly explained and evaluated by the researchers and subjects sent home with a comprehensive instruction guide and supporting pictures. Each subject was instructed to do 3 repetitions of 30 second static stretches on a daily basis during the 6-week intervention.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* male
* aged between 18-30yrs
* recreationally/competitively active
* limited hamstring flexibility (Tight Hamstring Syndrome) (SLR≤75°)

Exclusion Criteria

* a history of any musculotendinous hamstring injury in the previous year
* a history of neurological or orthopedic disorder affecting the lower extremities
* a history of lumbar disc herniation; or (4) a history of a cervical whiplash injury
Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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University Ghent

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Other Identifiers

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B670201630354

Identifier Type: -

Identifier Source: org_study_id