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Aerobic capacity and its correlates in patients with ankylosing spondylitis
Author(s) -
Hsieh LinFen,
Wei James ChengChung,
Lee HsinYi,
Chuang ChihCheng,
Jiang JiunnSong,
Chang KaeChwen
Publication year - 2016
Publication title -
international journal of rheumatic diseases
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.795
H-Index - 41
eISSN - 1756-185X
pISSN - 1756-1841
DOI - 10.1111/1756-185x.12347
Subject(s) - basfi , medicine , ankylosing spondylitis , aerobic capacity , vital capacity , erythrocyte sedimentation rate , spondylitis , pulmonary function testing , aerobic exercise , physical therapy , basdai , diffusing capacity , disease , lung , lung function , psoriatic arthritis
Abstract Aim To evaluate aerobic capacity in patients with ankylosing spondylitis (AS) and determine possible relationships between aerobic capacity, pulmonary function, and disease‐related variables. Method Forty‐two patients with AS and 42 healthy controls were recruited in the study. Descriptive data, disease‐related variables (grip strength, lumbosacral mobility, occiput‐to‐wall distance, chest expansion, finger‐to‐floor distance, Bath Ankylosing Spondylitis Disease Activity Index, Bath Ankylosing Spondylitis Functional Index (BASFI), Bath Ankylosing Spondylitis Global Score, erythrocyte sedimentation rate (ESR), C‐reactive protein (CRP) and hemoglobin), and chest and thoracic spine x‐rays were collected in each patient with AS. All subjects took standard pulmonary function and exercise tolerance tests, and forced vital capacity (FVC) and aerobic capacity were recorded. Results Both aerobic capacity and FVC in patients with AS were significantly lower than those in normal subjects ( P < 0.05). AS patients with BASFI scores of < 3 or BASDI scores of < 4 had a higher aerobic capacity. There was significant correlation between aerobic capacity, vital capacity, chest expansion, Schober's test, cervical range of motion, and BASFI in patients with AS. Neither aerobic capacity nor vital capacity correlated with disease duration, ESR, CRP, and hemoglobin. Conclusions Significantly reduced aerobic capacity and FVC were observed in patients with AS, and there was significant correlation between aerobic capacity, vital capacity, chest expansion, and BASFI.