Accessory Inspiratory Muscles in Chronic Neck Pain

Condition(s) studied

Investigational drug(s) / intervention(s)

Diaphragm Ultrasonography: Diaphragm thickness was assessed by ultrasonography while the participant was in a standardized position. Measurements were obtained at the end of expiration and during maximal inspiration.

Anterior Scalene Muscle Ultrasonography: Anterior scalene muscle thickness was assessed by ultrasonography while the participant was in a standardized position. Measurements were obtained at rest and during maximal inspiratory effort.

Upper Trapezius Muscle Ultrasonography: Upper trapezius muscle thickness was assessed by ultrasonography while the participant was in a standardized position. Measurements were obtained at rest and during maximal inspiratory effort.

Maximal Inspiratory Pressure Measurement: Maximal inspiratory pressure was measured using a respiratory pressure measurement device. The participant performed a maximal inspiratory effort against an occluded airway after complete expiration. Repeated measurements were performed with appropriate rest intervals.

Maximal Expiratory Pressure Measurement: Maximal expiratory pressure was measured using a respiratory pressure measurement device. The participant performed a maximal expiratory effort against an occluded airway after maximal inspiration. Repeated measurements were performed with appropriate rest intervals.

Pulmonary Function Testing: Pulmonary function testing was performed using spirometry while the participant was in a standardized seated position. The participant completed maximal forced expiratory maneuvers following standardized instructions, and technically acceptable measurements were recorded.

Study summary

This cross-sectional case-control study aims to investigate the ultrasonographic structural and functional characteristics of accessory inspiratory muscles in individuals with chronic non-specific neck pain and compare them with healthy controls. In addition, the relationships between accessory inspiratory muscle characteristics, diaphragm function, respiratory muscle strength, and pulmonary function parameters will be examined. The findings may improve understanding of the respiratory involvement associated with chronic neck pain and contribute to more comprehensive assessment strategies.

Eligibility

Primary outcome measure(s)

• Diaphragm Thickening Ratio — Baseline
  Diaphragm thickening ratio measured using ultrasonography.
• Sternocleidomastoid Muscle Thickness — Baseline
  Sternocleidomastoid muscle thickness measured using ultrasonography.

Trial sites (1)

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