title: Influence of scapular position on cervical rotation range of motion.
abstract: METHODS
  Cross-sectional study, quasi-experimental design.
  
  
  OBJECTIVE
  To compare the active cervical rotation range of motion (ROM) between healthy young subjects with a neutral vertical scapular alignment and subjects with scapular depression, and to examine the influence of modifying the vertical position of the scapulae on active cervical rotation ROM.
  
  
  BACKGROUND
  Altered scapular alignment is proposed to be related to neck dysfunction and pain. Changes in the alignment of either the scapulae or the cervical spine can potentially influence the biomechanics of the other by altering the tension at the cervicoscapular muscles.
  
  
  METHODS
  Fifty-eight college age students with neutral vertical scapular alignment (NS group, n = 29) or depressed scapular alignment (DS group, n = 29) volunteered to participate in the study. Cervical rotation ROM was assessed using the CROM device in 2 conditions: condition 1, resting scapular position; condition 2, neutral vertical scapular position with forearms supported.
  
  
  RESULTS
  The ANOVA revealed no significant group-by-condition interaction (F = 0.19, df = 1, P = .66). There was a significant main effect of condition (F = 47.16, df = 1, P<.001). For both groups, there was an increase in cervical rotation ROM in condition 2 when compared to condition 1 (mean +/- SD, 10.2 degrees +/- 3.1 degrees; 95% Cl: 4.1 degrees to 16.4 degrees). There was no main effect of group (F = .41, df = 1, P = .53).
  
  
  CONCLUSIONS
  Our results suggest that in a young healthy population the vertical scapular alignment does not influence cervical rotation ROM. Supporting the upper limbs, however, results in a significant and similar increase in cervical rotation ROM for both groups.
authors.affiliation: Catholic University of Minas Gerais - PUC-Minas, Department of Physical Therapy, Belo Horizonte, MG, Brazil.
authors.forename: Guilherme Trivellato
authors.initials: GT
authors.lastname: Andrade
authors.forename: Daniel Camara
authors.initials: DC
authors.lastname: Azevedo
authors.forename: Igor
authors.initials: I
authors.lastname: De Assis Lorentz
authors.forename: Rodrigo S
authors.initials: RS
authors.lastname: Galo Neto
authors.forename: Victor
authors.initials: V
authors.lastname: Sadala Do Pinho
authors.forename: Rafael T R
authors.initials: RT
authors.lastname: Ferraz Gonçalves
authors.forename: Mary Kate
authors.initials: MK
authors.lastname: Mcdonnell
authors.forename: Linda R
authors.initials: LR
authors.lastname: Van Dillen
mesh_terms: D000328:Adult; D000886:Anthropometry; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D016059:Range of Motion, Articular / Q000502:physiology*; D012399:Rotation; D012540:Scapula / Q000502:physiology*; D013131:Spine / Q000502:physiology*