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Unraveling the interaction between pathological upper limb synergies and compensatory trunk movements during reach-to-grasp after stroke: a cross-sectional study

van Kordelaar, Joost ; van Wegen, Erwin E. H. ; Kwakkel, Gert

Experimental brain research, 2012-09, Vol.221 (3), p.251-262 [Periódico revisado por pares]

Berlin/Heidelberg: Springer-Verlag

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Título:
Unraveling the interaction between pathological upper limb synergies and compensatory trunk movements during reach-to-grasp after stroke: a cross-sectional study
Autor: van Kordelaar, Joost ; van Wegen, Erwin E. H. ; Kwakkel, Gert
Assuntos: Adaptation, Physiological - physiology ; Aged ; Biological and medical sciences ; Biomedical and Life Sciences ; Biomedicine ; Cross-Sectional Studies ; Elbow ; Female ; Fundamental and applied biological sciences. Psychology ; Hand Strength - physiology ; Humans ; Male ; Medical sciences ; Middle Aged ; Motor control and motor pathways. Reflexes. Control centers of vegetative functions. Vestibular system and equilibration ; Movement - physiology ; Neurology ; Neurosciences ; Psychomotor Performance - physiology ; Research Article ; Stroke ; Stroke - physiopathology ; Torso - physiology ; Upper Extremity - physiology ; Vascular diseases and vascular malformations of the nervous system ; Vertebrates: nervous system and sense organs
É parte de: Experimental brain research, 2012-09, Vol.221 (3), p.251-262
Notas: ObjectType-Article-2
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Descrição: The aim of the present study was to identify how pathological limb synergies between shoulder and elbow movements interact with compensatory trunk movements during a functional movement with the paretic upper limb after stroke. 3D kinematic joint and trunk angles were measured during a reach-to-grasp movement in 46 patients with stroke and 12 healthy individuals. We used principal component analyses (PCA) to identify components representing linear relations between the degrees of freedom of the upper limb and trunk across patients with stroke and healthy participants. Using multivariate logistic regression analysis, we investigated whether component scores were related to the presence or absence of basic limb synergies as indicated by the arm section of the Fugl-Meyer motor assessment (FMA). Four and three principal components were extracted in patients with stroke and healthy individuals, respectively. Visual inspection revealed that the contribution of joint and trunk angles to each component differed substantially between groups. The presence of the flexion synergy (Shoulder Abduction and Elbow Flexion) was reflected by component 1, whereas the compensatory role of trunk movements for lack of shoulder and elbow movements was reflected by components 2 and 3 respectively. The presence or absence of basic limb synergies as determined by means of the FMA was significantly related to components 2 ( p = 0.014) and 3 ( p = 0.003) in patients with stroke. These significant relations indicate that PCA is a useful tool to identify clinically meaningful interactions between compensatory trunk movements and pathological synergies in the elbow and shoulder during reach-to-grasp after stroke.
Editor: Berlin/Heidelberg: Springer-Verlag
Idioma: Inglês

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Unraveling the interaction between pathological upper limb synergies and compensatory trunk movements during reach-to-grasp after stroke: a cross-sectional study

van Kordelaar, Joost ; van Wegen, Erwin E. H. ; Kwakkel, Gert

Berlin/Heidelberg: Springer-Verlag

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