Effects of Isometric Muscle Fatigue on Trunk Muscle Stiffness

Not Applicable

Completed

• Conditions: Muscle Tightness
• Interventions: Other: isometric trunk extensor muscles fatigue

• Registration Number: NCT05490966
• Lead Sponsor: University of Primorska

Brief Summary

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

Detailed Description

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.

Study Timeline

• Study First Submitted: 2022-08-04
• Study First Submitted QC: 2022-08-05
• Study First Posted: 2022-08-08
• Study Start: 2022-09-10
• Status Verified: 2022-10
• Primary Completion: 2022-10-01
• Study Completion: 2022-10-18
• Last Update Submitted: 2022-10-18
• Last Update Posted: 2022-10-19

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 22

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
Isometric fatigue	isometric trunk extensor muscles fatigue	Fatiguing intermittent isometric exertions of trunk extensor muscles will be performed.

Primary Outcome Measures

Name	Time	Method
Change of trunk extensors muscle stiffness	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 Outcome Measures

Name	Time	Method
Change of muscle electromyography mean amplitude	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.

Trial Locations

Locations (1)

University of Primorska, Faculty of Health Sciences; 🇸🇮 Izola, Slovenia