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Electromyographic analyses of global synkinesis in the paretic upper limb after stroke
HWANG IS; TUNG LC; YANG JF; CHEN YC; YEH CY; WANG CH
PHYS THER , 2005, vol. 85, n° 8, p. 755-765 Doc n°: 121079 Localisation : Documentation IRR Descripteurs : AF21 - ACCIDENTS VASCULAIRES CEREBRAUX, DD12 - EXPLORATION EXAMENS BILANS - MEMBRE SUPERIEUR Global synkinesis (GS), or motor irradiation, is an involuntary movement associated with the coactivation of numerous muscles in one limb when the opposite limb is active. The electromyographic (EMG) patterns of people with stroke and people who were healthy were analyzed to characterize GS development in relation to joint involvement and to attempt to relate these findings to clinical observations. Subjects and Methods. Twenty patients with stroke, divided into 2 groups with either greater levels of irradiation (SG, n = 10) or lesser levels of irradiation (SL, n=10), and 20 subjects in a control group were studied. A dynamometer was used to provide resistance for voluntary isometric muscle contractions of the flexor muscle groups of the shoulder, elbow, and wrist. The summated and standardized net EMG amplitudes of 8 principal muscles of the unexercised (paretic) upper extremity were used to characterize intensity and spatial representation of GS. Clinical measurements included the Fugl-Meyer Assessment Scale (FMA), Barthel Index of Activities of Daily Living (BI), and the stage on the Brunnstrom Stages of Motor Recovery Scale (BR). Langue : ANGLAIS |
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