A comparison of respiratory muscle strength, pulmonary function tests and endurance in patients with early and late stage ankylosing spodylitis

Ankylosing spondylitis (AS) is a multisystemic disease in which pulmonary function is altered owing mainly to the restriction of chest wall involvement. A restrictive ventilatory defect has been extensively reported. This has been suggested to be a consequence of reduced mobility of the thoracic cag...

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