Unilateral Stretch Crossover Effect RCT

Muscle Tightness Clinical Trial

Official title:

Crossover-effect of Unilateral Dynamic Versus Static Stretch of Hamstrings Muscle on Hamstrings Muscle Length - a Randomized Controlled Trial

Clinical Trial Details — Status: Enrolling by invitation

Administrative data

• NCT number: NCT05554809
• Other study ID #: LuleaTU
• Status: Enrolling by invitation
• Phase: N/A
• Start date: September 15, 2022
• Est. completion date: June 1, 2023

Study information

• Verified date: September 2022
• Source: Luleå Tekniska Universitet
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial 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.

Recruitment information / eligibility

• Status: Enrolling by invitation
• Enrollment: 69
• Est. completion date: June 1, 2023
• Est. primary completion date: June 1, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 50 Years

Eligibility

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

Related Conditions & MeSH terms

• Muscle Tightness
• Stretch

Intervention

Other:
• Strecthing
Comparing the crossover-effect of dynamic versus static stretching

Locations

Country	Name	City	State
Sweden	Luleå university of Technology	Luleå	Norrbotten

Sponsors (1)

Lead Sponsor	Collaborator
Luleå Tekniska Universitet

Country where clinical trial is conducted

Sweden, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Passiv straigth leg raising	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.	5 minutes
Primary	Active knee extension	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.	5 minutes