title: Aerobic exercise is safe and effective in systemic sclerosis.
abstract: Several studies have established that systemic sclerosis patients have a reduced exercise capacity when compared to healthy individuals. It is relevant to evaluate whether aerobic exercise in systemic sclerosis patients is a safe and effective intervention to improve aerobic capacity. Seven patients without pulmonary impairment and seven healthy controls were enrolled in an 8-week program consisting of moderate intensity aerobic exercise. Patients and controls had a significant improvement in peak oxygen consumption (19.72+/-3.51 vs. 22.27+/-2.53 and 22.94+/-4.70 vs. 24.55+/-3.00, respectively, p=0.006), but difference between groups was not statistically significant (p=0.149). This finding was reinforced by the fact that at the end of the study both groups were able to perform a significantly higher exercise intensity when compared to baseline, as measured by peak blood lactate (1.43+/-0.51 vs. 1.84+/-0.33 and 1.11+/-0.45 vs. 1.59+/-0.25, respectively, p=0.01). Patients improved the peak exercise oxygen saturation comparing to the baseline (84.14+/-9.86 vs. 90.29+/-5.09, p=0.048). Rodnan score was similar before and after the intervention (15.84+/-7.84 vs.12.71+/-4.31, p=0.0855). Digital ulcers and Raynaud's phenomenon remained stable. Our data support the notion that improving aerobic capacity is a feasible goal in systemic sclerosis management. The long term benefit of this intervention needs to be determined in large prospective studies.
authors.affiliation: Department of Rheumatology, University of Sao Paulo, Av. Dr. Arnaldo, 455 - 3 degrees andar - sala 3133, Sao Paulo 01246-903, Brazil. reumato@usp.br
authors.forename: N C
authors.initials: NC
authors.lastname: Oliveira
authors.forename: L M
authors.initials: LM
authors.lastname: dos Santos Sabbag
authors.forename: A L
authors.initials: AL
authors.lastname: de Sá Pinto
authors.forename: C L
authors.initials: CL
authors.lastname: Borges
authors.forename: F R
authors.initials: FR
authors.lastname: Lima
mesh_terms: D000328:Adult; D005081:Exercise Therapy / Q000379:methods*; D017079:Exercise Tolerance / Q000502:physiology; D005260:Female; D006801:Humans; D007773:Lactates / Q000097:blood; D008875:Middle Aged; D010101:Oxygen Consumption / Q000502:physiology*; D011446:Prospective Studies; D011788:Quality of Life; D012129:Respiratory Function Tests; D012595:Scleroderma, Systemic / Q000503:physiopathology / Q000628:therapy*; D016896:Treatment Outcome
chemical_list: D007773:Lactates