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Type:	Artigo de Periódico
Title:	Scapulothoracic kinematic pattern in the shoulder pain and scapular dyskinesis: A principal component analysis approach
Authors:	Denise Martineli Rossi Renan Alves Resende Sergio Teixeira da Fonseca Anamaria Siriani de Oliveira
Abstract:	The relationship between shoulder pain and scapular dyskinesis (SDK) is unclear. Differences between groups with and without SDK have been demonstrated, focusing on the amount of scapular motion at specific degrees of humeral elevation. However, this approach does not consider the temporal information and shape of the scapular motion temporal series. Principal Component Analysis (PCA) may clarify this variability and advance current understanding of ‘abnormal’ movement patterns. This study aimed to evaluate the scapular kinematics in patients with shoulder pain and in asymptomatic participants with and without SDK using PCA. Data were collected in 98 participants separated in four groups: Pain + SDK (n = 24), Pain (n = 25), No Pain + SDK (n = 24), and No Pain (n = 25). Scapulothoracic kinematic data were measured with an electromagnetic tracking device during arm elevation and lowering phases. PCA and analysis of variance were used to compare the groups. The No Pain + SDK group had a progressive increasing in anterior tilt over the elevation phase compared to the Pain (effect size = 0.79) and No Pain (effect size = 0.80) groups. During the arm-lowering, the Pain + SDK group had a progressive increasing in anterior tilt over this phase in comparison to the No Pain + SDK group (effect size = 0.68). Therefore, PCA demonstrated differences in the scapular anterior tilt related to SDK and shoulder pain. The presence of SDK revealed a scapular pattern with progressive increasing in anterior tilt over the elevation phase. However, during the arm-lowering phase, asymptomatic participants with SDK changed their motion pattern, unlike the symptomatic group, reinforcing the suggested association between scapular modifications and shoulder symptoms.
Subject:	Discinesias Dor de ombro Cinemática
language:	eng
metadata.dc.publisher.country:	Brasil
Publisher:	Universidade Federal de Minas Gerais
Publisher Initials:	UFMG
metadata.dc.publisher.department:	EEF - DEPARTAMENTO DE FISIOTERAPIA
Rights:	Acesso Restrito
metadata.dc.identifier.doi:	https://doi.org/10.1016/j.jbiomech.2018.07.010
URI:	http://hdl.handle.net/1843/48423
Issue Date:	Aug-2018
metadata.dc.url.externa:	https://www.sciencedirect.com/science/article/pii/S0021929018305116?via%3Dihub
metadata.dc.relation.ispartof:	Journal of biomechanics
Appears in Collections:	Artigo de Periódico

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