Results: Mean age of the patients was 47.9 years, with mean disease duration of 7.6 years. Disease status was evaluated by International Myositis Assessment and Clinical Studies Group (IMACS) core set measures. Aerobic capacity was evaluated by means of the treadmill maximum (Centurion 200, Micromed, Brazil) cardiorespiratory test, demonstrated through VO2max (mL/kg.min). Materials and methods: This is a cross-sectional study, from 2017 to 2018, that compared 23 female patients with SAM (2017 EULAR/ACR classification criteria: 13 dermatomyositis, 4 polymyositis and also 6 antisynthetase syndrome) with 17 aged, gender and body mass index-matched healthy individuals. Thus, the aim of the present study was to analyze aerobic capacity in SAM.
However, few studies have assessed in SAM. Reduced aerobic capacity has been documented in several autoimmune rheumatic diseases. Alexandre Moura dos Santos, Rafael Giovane Misse, Jean Marcos de Souza, Diego Sales de Oliveira, Fernanda Rodrigues Lima, Ana Lúcia de Sá Pinto, Samuel Katsuyuki Shinjo FACULDADE DE MEDICINA DA UNIVERSIDADE DE SÃO PAULO, SÃO PAULO, SÃO PAULO, Brasilīackground: Systemic autoimmune myopathies (SAM) are a heterogeneous group of diseases that cause chronic muscle inflammation and progressive muscle weakness.