title: Shoulder abduction torque steadiness is preserved in subacromial impingement syndrome.
abstract: This study compared peak torque and torque steadiness during isometric abduction in subjects with subacromial impingement syndrome (SIS) and those with no upper limb disorders. The SIS group consisted of 27 subjects (33.48 +/- 9.94 years) with unilateral SIS. The control group consisted of 23 healthy and active subjects (32.26 +/- 9.04 years). Peak torque and torque steadiness were measured during isometric abduction (80 masculine in the scapular plane) of the shoulder. Standard deviation, coefficient of variation, stability time, median frequency, and relative power were measured from the steadiness trials. There were neither significant interactions between group and side (P > 0.05), nor were there significant main effects of group and side (P > 0.05) for all variables analyzed. The results of this study showed that steadiness is preserved by SIS during isometric abduction of the shoulder.
authors.affiliation: Department of Physical Therapy, Federal University of São Carlos, Rodovia Washington Luís, km 235, São Carlos, SP, 13565-905, Brazil.
authors.forename: Paula Rezende
authors.initials: PR
authors.lastname: Camargo
authors.forename: Mariana Arias
authors.initials: MA
authors.lastname: Avila
authors.forename: Ana Beatriz
authors.initials: AB
authors.lastname: de Oliveira
authors.forename: Naoe Aline
authors.initials: NA
authors.lastname: Asso
authors.forename: Benedito Galvão
authors.initials: BG
authors.lastname: Benze
authors.forename: Tania
authors.initials: T
authors.lastname: de Fátima Salvini
mesh_terms: D000328:Adult; D000368:Aged; D001696:Biomechanical Phenomena; D005260:Female; D006225:Hand / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction / Q000502:physiology; D018482:Muscle, Skeletal / Q000503:physiopathology; D017006:Rotator Cuff / Q000503:physiopathology; D012782:Shoulder / Q000503:physiopathology*; D019534:Shoulder Impingement Syndrome / Q000503:physiopathology*; D012785:Shoulder Joint / Q000503:physiopathology*; D019415:Torque