Diaphragm Function in Low Back Pain People

Active, not recruiting

• Conditions: Low Back Pain, Mechanical; Low Back Pain
• Interventions: Other: MSK ultrasonograpy; Other: sitting Functional and Lateral Reach Test

• Registration Number: NCT05486858
• Lead Sponsor: Szeged University

Brief Summary

Pathomechanism of nonspecific low back pain is not clear for the researchers yet. Our aim is to evaluate the function of one of the stabilizer muscles of the low back area. Diaphragm's postural function is evident. However, we do not understand its changes of function in low back pain. Postural function of diaphragm was screened in supine position and in sitting too in a relaxed and in a contracted state. The thickness of diaphragm was measured and contraction ratio was calculated. Additionally, the stability limits of the trunk were measured. We were curios about the differencies in contraction ratio between asymptomatic and low back pain individuals.

Detailed Description

Pathomechanism of nonspecific low back pain is not clear for the researchers yet. Our aim is to evaluate the function of one of the stabilizer muscles of the low back area. Diaphragm's postural function is evident. However, we do not understand its changes of function in low back pain. The postural function of diaphragm was screened with Zonare Zone Ultrasound System in supine position and in sitting too in a relaxed and in a contracted state. The thickness of diaphragm was measured by using an elecric caliper of the ultrasound device and the contraction ratio was calculated. Additionally, the stability limits of the trunk were measured with sitting functional reach and sitting lateral reach tests. We were curios about the differencies in contraction ratio between asymptomatic and low back pain individuals.

Study Timeline

• Study Start: 2021-02-08
• Status Verified: 2022-08
• Study First Submitted: 2022-08-03
• Study First Submitted QC: 2022-08-03
• Last Update Submitted: 2022-08-03
• Study First Posted: 2022-08-04
• Last Update Posted: 2022-08-04
• Primary Completion: 2022-08-15
• Study Completion: 2025-02-08

Recruitment & Eligibility

• Status: ACTIVE_NOT_RECRUITING
• Sex: All
• Target Recruitment: 350

Inclusion Criteria

• capable to get the scene of the measurements
• age is over 18

Exclusion Criteria

• serious neurologycal disorder, which affects the performance on the functional tests
• previous surgical intervention which has been affected the trunk
• intensive pain, which prevent the individual to perform the needed positions (supine and sitting)
• serious lung disease or breathing disorder

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
asymptomatic individuals	MSK ultrasonograpy	People who has no low back pain in the patient history.
LBP individuals	MSK ultrasonograpy	People who suffer from pain in the lower back area.
LBP individuals	sitting Functional and Lateral Reach Test	People who suffer from pain in the lower back area.
asymptomatic individuals	sitting Functional and Lateral Reach Test	People who has no low back pain in the patient history.

Primary Outcome Measures

Name	Time	Method
MSK ultrasonography	20 min	An imaging procedure that allows doctors, physiotherapist to see muscles, joints, and more. For diagnosing muscle tears/strains, nerves, and arthritis. Physical therapy or injection of medicine may be next step. Involves radiology and center for musculoskeletal care.; In our study, the thickness of diaphragm muscle was measured in supine and sitting positions. Its contraction ratio was calculated, based on the relaxed and the contracted states of the muscle.
sitting Functional and Lateral Reach Test	5 min	Special functional tests for testing the stability limits of the trunk. These are measured in sitting position, with the feet on the ground and without any support. The induvidual has to lean forward/right/left directions with forward stretched arms. We calculated the distance between the start and end positions of the fingers.

Secondary Outcome Measures

Name	Time	Method
Visual analogue scale	1 min	The visual analogue scale or visual analog scale (VAS) is a psychometric response scale which can be used in questionnaires. It is a measurement instrument for subjective characteristics or attitudes that cannot be directly measured. When responding to a VAS item, respondents specify their level of agreement to a statement by indicating a position along a continuous line between two end-points. VAS is the most common pain scale. We ask the participants to indicate with the visual analogue scale the intensity of low back pain.

Trial Locations

Locations (1)

University of Szeged; 🇭🇺 Szeged, Csongrád-Csanád, Hungary