Effects of Respiratory Muscle Strengthening and Diaphragmatic Breathing on Shoulder Pain and Disability

NCT07885215 | Recruiting

• 1 other identifier: ZYamakoglu
• Study Type: interventional
• Target: 70
• Locations: 1 country
• Sites: 1

Brief Summary

The aim of the study is to investigate the effects of respiratory muscle strengthening and diaphragmatic breathing on pain levels, respiratory capacity and sleep quality in participants with shoulder pain and disability.

Conditions

Shoulder Pain; Sleep Quality; Lung Cavity; Pain Intensity

Keywords

shoulder pain; lung capacity; breathing exercise; pain intensity; sleep quality

Outcome Measures

Primary Outcomes (1)

• Change in Shoulder Pain and Disability Index (SPADI) Score

  Shoulder pain and disability will be assessed using the Shoulder Pain and Disability Index (SPADI). The SPADI consists of 13 items divided into two subscales: pain (5 items) and disability (8 items). The total score ranges from 0 to 100, with higher scores indicating greater pain and disability. Assessments will be performed at baseline and at the end of the three-week intervention.

  Baseline and 3 weeks after baseline

Secondary Outcomes (11)

• Change in Shoulder Pain Intensity (VAS)

  Baseline and 3 weeks after baseline

• Change in Pulmonary Function (FVC)

  Baseline and 3 weeks after baseline

• Change in Pulmonary Function (FEV1)

  Baseline and 3 weeks after baseline

• Change in FEV1/FVC Ratio

  Baseline and 3 weeks after baseline

• Change in Peak Expiratory Flow (PEF)

  Baseline and 3 weeks after baseline

Study Arms (2)

breathing exercise group

EXPERIMENTAL

After the spirometric measurements, the effects on shoulder pain levels, functionality, and quality of life will be evaluated in the experimental group. In addition to shoulder rehabilitation, respiratory muscle strengthening exercises and diaphragmatic breathing will be applied. Finally, spirometric measurements will be taken again, and the impact of respiratory muscle strengthening exercises on lung capacity will be assessed.

Other: respiratory muscle strengthening exercises and diaphragmatic breathing exercises

control group

ACTIVE COMPARATOR

After the spirometric measurements, the effects on shoulder pain levels, functionality, and quality of life will be evaluated in the control group. Shoulder rehabilitation will be applied. Finally, spirometric measurements will be taken again.

Other: shoulder rehabilitation

Interventions

shoulder rehabilitation OTHER

Exercises and mobilizations aimed at reducing shoulder pain and increasing range of motion, when applicable, will be implemented. Spirometric measurements will be taken before and after the treatment.

control group

respiratory muscle strengthening exercises and diaphragmatic breathing exercises OTHER

The effects of strengthening the respiratory muscles and applying diaphragmatic breathing exercises on pain levels, lung capacity, and sleep quality will be examined in individuals with shoulder pain. Spirometric measurements will be taken.

breathing exercise group

Eligibility Criteria

• Age: 40 Years - 65 Years
• Sex: all
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Voluntary participation in the study.
• Male and female participants.
• Aged between 40 and 65 years.
• Shoulder pain lasting for at least three months.
• No participation in a pulmonary rehabilitation program within the previous six months.

You may not qualify if:

• Presence of neuromuscular diseases.
• History of shoulder subluxation or dislocation.
• Presence of pulmonary diseases.
• History of shoulder surgery.
• Current use of analgesic medications.
• History of thoracic surgery.
• Presence of spinal deformities.
• History of endocrine diseases.

Sponsors & Collaborators

• Zonguldak Bulent Ecevit University: lead

Study Sites (1)

Zonguldak Level Hospital

Zonguldak, Turkey (Türkiye)

RECRUITING

MeSH Terms

Conditions

Shoulder Pain; Sleep Initiation and Maintenance Disorders; Pain

Condition Hierarchy (Ancestors)

Arthralgia; Joint Diseases; Musculoskeletal Diseases; Neurologic Manifestations; Signs and Symptoms; Pathological Conditions, Signs and Symptoms; Sleep Disorders, Intrinsic; Dyssomnias; Sleep Wake Disorders; Nervous System Diseases; Mental Disorders

Study Officials

• Zeynep Erdem

  Zonguldak Bulent Ecevit University

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Zeynep Erdem

CONTACT

+90 372 261 3365; zsyamakoglu@gmail.com

Sanem ŞENER

CONTACT

+90 372 261 3365; sanemsener@yahoo.com

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: TRIPLE
• Who Masked: PARTICIPANT, INVESTIGATOR, OUTCOMES ASSESSOR
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Physical Therapist

Study Record Dates

• First Submitted: October 8, 2026
• First Posted: October 21, 2026
• Study Start: November 25, 2025
• Primary Completion (Estimated): December 25, 2026
• Study Completion (Estimated): December 25, 2026
• Last Updated: October 21, 2026

Record last verified: 2026-10

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)