Hypo-pressive Abdominal Exercise on Inspiratory Muscle Strength, Diaphragm Thickness and Pain in Chronic Nonspecific Low Back Pain

Effects of Hypo-pressive Abdominal Exercise on Inspiratory Muscle Strength, Diaphragm Thickness and Pain in Patients With Chronic Nonspecific Low Back Pain

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04750187

Enrollment

Registered

2021-02-11

Start date

2021-02-15

Completion date

2021-05-18

Last updated

2021-05-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Low Back Pain

Brief summary

The purpose of this study will be to assess the effects of an 8-week hypo-pressive abdominal exercise program on Inspiratory muscle strength, diaphragm thickness, pressure pain threshold and disability in patients with non-specific chronic low back pain. A randomized clinical trial will be carried out. A total sample of 40 patients with non-specific chronic low back pain will be recruited and divided into 2 groups including an experimental group (n=20) which will receive an 8-week hypo-pressive abdominal exercise program and a control group (n=20) which will not receive any training program. Inspiratory muscle strength, diaphragm thickness, pressure pain threshold and disability will be assessed.

Interventions

OTHERHypo-pressive abdominal exercise intervention

An 8-week hypo-pressive abdominal exercise program

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

SINGLE (Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to 65 Years

Healthy volunteers

Inclusion criteria

* Patients with chronic non-specific low back pain

Exclusion criteria

* Congenital diseases * Rheumatic or neuro-muscular diseases * Respiratory conditions * Surgery * Pregnancy

Design outcomes

Primary

Measure	Time frame	Description
Inspiratory muscle strength	Change from baseline inspiratory muscle strength at 8 weeks	Inspiratory muscle strength will be measured in % by a POWER-breathe device

Secondary

Measure	Time frame	Description
Diaphragm muscle thickness	Change from baseline diaphragm muscle thickness at 8 weeks	Diaphragm muscle thickness will be measured in mm by an ultrasound device
Pressure pain threshold	Change from baseline pressure pain threshold at 8 weeks	Pressure pain threshold will be measured in kg/cm2 by an algometer
Disability	Change from baseline disability at 8 weeks	Pain-related disability score will be measured by the Roland-Morris Disability Questionnaire. Total score ranges from 0 to 24. Higher scores represent higher levels of pain-related disability.

Countries

Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026