Neurodynamic Sliders Promote Flexibility in Tight Hamstring Syndrome

Sponsor

University Ghent (Other)

Overall Status

Completed

CT.gov ID

NCT05652452

Collaborator

(none)

Enrollment

Arms

17.9

Actual Duration (Months)

Study Details

Study Description

Brief Summary

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.

Condition or Disease	Intervention/Treatment	Phase
Hamstring Injury Neurodynamics Range of Motion	Other: Neurodynamics Other: Static stretch	N/A

Study Design

Study Type:

Interventional

Actual Enrollment :

50 participants

Allocation:

Randomized

Intervention Model:

Parallel Assignment

Masking:

None (Open Label)

Primary Purpose:

Prevention

Official Title:

Neurodynamic Sliders Promote Flexibility in Tight Hamstring Syndrome

Actual Study Start Date :

Jan 1, 2017

Actual Primary Completion Date :

Jul 1, 2017

Actual Study Completion Date :

Jul 1, 2018

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Neurodynamics	Other: 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.
Active Comparator: Static stretch	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.

Arm

Intervention/Treatment

Experimental: Neurodynamics

Other: 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.

Active Comparator: Static stretch

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.

Outcome Measures

Primary Outcome Measures

Hamstring flexibility [at Baseline]
Straight leg raise by means of an app based goniometer
Hamstring flexibility [6 weeks after intervention]
Straight leg raise by means of an app based goniometer
Hamstring flexibility [4 weeks after retention period]
Straight leg raise by means of an app based goniometer

Eligibility Criteria

Criteria

Ages Eligible for Study:

N/A and Older

Sexes Eligible for Study:

Male

Accepts Healthy Volunteers:

Yes

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

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

University Ghent

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

Responsible Party:

University Ghent

ClinicalTrials.gov Identifier:

NCT05652452

Other Study ID Numbers:

B670201630354

First Posted:

Dec 15, 2022

Last Update Posted:

Dec 15, 2022

Last Verified:

Dec 1, 2022

Individual Participant Data (IPD) Sharing Statement:

Plan to Share IPD:

Studies a U.S. FDA-regulated Drug Product:

Studies a U.S. FDA-regulated Device Product:

Study Results

No Results Posted as of Dec 15, 2022