U.S., April 8 -- ClinicalTrials.gov registry received information related to the study (NCT07515131) titled 'Respiratory Function and S-index in Radiographic Axial Spondyloarthritis' on March 25.
Brief Summary: Radiographic axial spondyloarthritis (r-axSpA) is a chronic inflammatory disease that may lead to reduced chest expansion and impaired respiratory function due to thoracic involvement. While inspiratory muscle strength is commonly assessed using maximum inspiratory pressure (MIP), the S-index is a novel parameter reflecting dynamic inspiratory muscle strength and has not yet been investigated in this population.
This study aims to compare chest expansion, spirometric parameters, and S-index values between individuals with r-axSpA a...