Unilateral Stretch Crossover Effect RCT

• Sponsor: Luleå Tekniska Universitet (Other)
• Overall Status: Enrolling by invitation
• CT.gov ID: NCT05554809
• Collaborator: (none)
• Enrollment: 69
• Location: 1
• Arms: 3
• Anticipated Duration (Months): 8.5
• Patients Per Site Per Month: 8.1

Study Details

Study Description

Brief Summary

The crossover-effect within resistance- and strength training is more or less confirmed with multiple studies showing similar results. The studies shows an increase in muscle strength within the contralateral extremity being exercised. Regarding muscle length or mobility (flexibility) the crossover-effect have not been studied.

For a person to gain an increase in muscle strength mobility training in the form of stretching and flexibility training of our skeletal muscle is a common exercise. However, the evidence are scare and there are only a few studies comparing the effect of prolonged static stretching (> 90 sec) and dynamic flexibility training as to which of these methods has the best length-enhancing effect over time.

The purpose of this study is to compare the crossover-effect of eight weeks of oneleg dynamic flexibility training versus oneleg prolonged static stretching versus a nonstretching controlgroup on mobility in the hamstring muscles in adults with reduced mobility of the hamstring muscle. The aim is also to compare the sustained effect of flexibility training between the two groups, eight weeks after completion of the intervention.

Condition or Disease	Intervention/Treatment	Phase
Muscle Tightness; Stretch	Other: Strecthing	N/A

Study Design

• Study Type: Interventional
• Anticipated Enrollment: 69 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Masking: Single (Outcomes Assessor)
• Masking Description: The outcome assessor are not aware of the participants group allocation at time of measurement of outcome measures
• Primary Purpose: Treatment
• Official Title: Crossover-effect of Unilateral Dynamic Versus Static Stretch of Hamstrings Muscle on Hamstrings Muscle Length - a Randomized Controlled Trial
• Actual Study Start Date: Sep 15, 2022
• Anticipated Primary Completion Date: Jun 1, 2023
• Anticipated Study Completion Date: Jun 1, 2023

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Dynamic stretching	Other: Strecthing; Comparing the crossover-effect of dynamic versus static stretching
Experimental: Static stretching	Other: Strecthing; Comparing the crossover-effect of dynamic versus static stretching
Active Comparator: Controll	Other: Strecthing; Comparing the crossover-effect of dynamic versus static stretching

Outcome Measures

Primary Outcome Measures

1. Passiv straigth leg raising [5 minutes]

   Muscle length of the hamstrings muscle will be measured via degress of hip flexion at a passive straigth leg raise of the lower extremity. One leg at a time.

2. Active knee extension [5 minutes]

   The person will lay supine with a 90 degress of hip flexion towards a bar against the thigh. Thereafter the person will perform an active knee extensor as far as possible and the degrees of kneeflexion will be measured.

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years to 50 Years
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: Yes

Inclusion Criteria:

• Passiv straigth leg raise < 70 degrees

• Read and understand swedish

Exclusion Criteria:

• Injuries within the hamstrings muscle past 3 month

• Disabilities within the muscloskeletal system (i.e. lower back, thoracic spine, cervikal spine, hip, knee, ankle, fot) affecting the participants life

• Neurological, inflammatoric or heart-diseases

• Nociplasic pain disorders

• Medication with possibility affecting muscle strength of flexibility

• Positive neurodynamic test of the lower extremity

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Luleå university of Technology	Luleå	Norrbotten	Sweden	97187

Sponsors and Collaborators

• Luleå Tekniska Universitet

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: Luleå Tekniska Universitet
• ClinicalTrials.gov Identifier: NCT05554809
• Other Study ID Numbers: LuleaTU
• First Posted: Sep 26, 2022
• Last Update Posted: Sep 26, 2022
• Last Verified: Sep 1, 2022

• Individual Participant Data (IPD) Sharing Statement: Undecided
• Plan to Share IPD: Undecided
• Studies a U.S. FDA-regulated Drug Product: No
• Studies a U.S. FDA-regulated Device Product: No

Study Results

No Results Posted as of Sep 26, 2022