Effects of Isometric Muscle Fatigue on Trunk Muscle Stiffness

NCT05490966 | Completed

• 1 other identifier: SWE_Isometric
• Study Type: interventional
• Target: 22
• Locations: 1 country
• Sites: 1

Brief Summary

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

Conditions

Muscle Tightness

Keywords

multifidus; erector spinae; muscle stiffness

Outcome Measures

Primary Outcomes (1)

• Change of trunk extensors muscle stiffness

  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.

  1 hour

Secondary Outcomes (1)

• Change of muscle electromyography mean amplitude

  1 hour

Other Outcomes (1)

• Change in lumbar range of motion

  1 hour

Study Arms (1)

Isometric fatigue

EXPERIMENTAL

Fatiguing intermittent isometric exertions of trunk extensor muscles will be performed.

Other: isometric trunk extensor muscles fatigue

Interventions

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.

Isometric fatigue

Eligibility Criteria

• Age: 18 Years - 40 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Physically active at least 3 hours a week

You may not qualify if:

• 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

Sponsors & Collaborators

• University of Primorska: lead

Study Sites (1)

University of Primorska, Faculty of Health Sciences

Izola, 6310, Slovenia

Location

Study Officials

• Matej Voglar, PhD

  University of Primorska, Faculty of Health Sciences

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NA
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Assistant Professor, PhD

Study Record Dates

• First Submitted: August 4, 2022
• First Posted: August 8, 2022
• Study Start: September 10, 2022
• Primary Completion: October 1, 2022
• Study Completion: October 18, 2022
• Last Updated: October 19, 2022

Record last verified: 2022-10

Data Sharing

• IPD Sharing: Will share
• Shared Documents: STUDY PROTOCOL

Locations

SL (1)