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Completed

NCT Number: NCT05490966

Effects of Isometric Muscle Fatigue on Trunk Muscle Stiffness

Interventional study of the effects of a trunk extensor muscles fatigue protocol on trunk extensors stiffness.

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Key information

Conditions

Muscle Tightness

Age range

18 year–40 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Primorska, Faculty of Health Sciences

Izola, 6310, Slovenia

About this study

Single visit interventional study of the effects of a trunk extensor muscles fatigue protocol on multifidus and erector spinae muscle stiffness measured by Ultrasound based Shearwave elastography.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Physically active at least 3 hours a week

Exclusion criteria

  • Low back pain in the past 6 months
  • History of chronic low back pain
  • History of spinal or pelvic operation
  • Hypermobility, more than 4 points on Beighton scale
  • Cardiovascular or systemic diseases
  • Pregnancy

Treatment and study plan

isometric trunk extensor muscles fatigue

Other

Participants will perform three sets of intermittent isometric efforts between 50 and 60 percents of their maximal isometric strength. A padded force sensor will be placed approximately at the level of the 7th thoracic vertebrae. The first two sets will last six minutes each, while the third set will last three minutes. Between each set participants will rest for two minutes.

Primary outcomes

  1. Change of trunk extensors muscle stiffness

    Time frame: 1 hour

    Muscle stiffness will be measured at rest and during standardised sub-maximal exertions in prone lying position. Muscle stiffness will be expressed as the shear modulus value in kilopascals.

Secondary outcomes

  1. Change of muscle electromyography mean amplitude

    Time frame: 1 hour

    Muscle activation of trunk extensors will be measured using superficial electromyography at rest and during two standardised sub-maximal exertions in prone lying position (single arm raise and upper body raise). Mean amplitude in six to eight second time frames will be calculated.

Other outcomes

  1. Change in lumbar range of motion

    Time frame: 1 hour

    Lumbar range of motion will be evaluated using Modified modified Schober test.

Sponsors and collaborators

Lead sponsor

University of Primorska

Other

Registry information

Important dates

Study start
2022
Primary completion
2022
Study completion
2022
First posted
Aug 8, 2022
Registry last updated
Oct 19, 2022

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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