Unilateral Stretch Crossover Effect RCT

NCT05554809 | Unknown

• 1 other identifier: LuleaTU
• Study Type: interventional
• Target: 69
• Locations: 1 country
• Sites: 1

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.

Conditions

Muscle Tightness; Stretch

Outcome Measures

Primary Outcomes (2)

• 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

• 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

Study Arms (3)

Dynamic stretching

EXPERIMENTAL

Other: Strecthing

Static stretching

EXPERIMENTAL

Other: Strecthing

Controll

ACTIVE COMPARATOR

Other: Strecthing

Interventions

Strecthing OTHER

Comparing the crossover-effect of dynamic versus static stretching

Controll; Dynamic stretching; Static stretching

Eligibility Criteria

• Age: 18 Years - 50 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Passiv straigth leg raise \< 70 degrees
• Read and understand swedish

You may not qualify if:

• 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

Sponsors & Collaborators

• Luleå Tekniska Universitet: lead

Study Sites (1)

Luleå university of Technology

Luleå, Norrbotten County, 97187, Sweden

Location

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Masking Details: The outcome assessor are not aware of the participants group allocation at time of measurement of outcome measures
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: September 15, 2022
• First Posted: September 26, 2022
• Study Start: September 15, 2022
• Primary Completion: June 1, 2023
• Study Completion: June 1, 2023
• Last Updated: September 26, 2022

Record last verified: 2022-09

Locations

SE (1)