title: Relationship between function, strength and electromyography of upper extremities of persons with tetraplegia.
abstract: METHODS
  Cross-sectional.
  
  
  OBJECTIVE
  To analyze the relationships between functional tests, arm strength and root mean square of surface electromyography (EMG).
  
  
  METHODS
  Sao Paulo, Brazil.
  
  
  METHODS
  Twenty-four individuals with chronic tetraplegia participated. Upper extremity motor score (UEMS), functional independence measure (FIM) motor score, spinal cord independence measure III and capabilities of upper extremity (CUE) were performed. Muscle strength of the right elbow flexors-extensors was assessed using dynamometry and manual muscle test (MMT) and EMG of right biceps and triceps brachii were performed. Spearman's rank correlation coefficients and Mann-Whitney's U-test were used.
  
  
  RESULTS
  Functional tests and UEMS correlated strongly among them. UEMS highly correlated with triceps dynamometry and EMG. The dynamometry showed a very high correlation with MMT on the extensor group and a moderate correlation with flexor group. Triceps EMG showed moderate correlation with FIM and CUE. High correlations between triceps EMG and elbow extensors dynamometry and MMT were observed. A significant better performance on functional tests was observed on lower ASIA motor levels. The low-tetraplegia group showed a significant higher score on triceps EMG and dynamometry.
  
  
  CONCLUSIONS
  Arm strength and EMG seem to be related to functional capabilities and independence in chronic tetraplegia.
authors.affiliation: Department of Orthopedics and Traumatology, UNICAMP, State University of Campinas, Campinas, Brazil. vavargas@fcm.unicamp.br
authors.forename: V M
authors.initials: VM
authors.lastname: de Vargas Ferreira
authors.forename: R
authors.initials: R
authors.lastname: Varoto
authors.forename: Ê W
authors.initials: ÊW
authors.lastname: Azevedo Cacho
authors.forename: A
authors.initials: A
authors.lastname: Cliquet
mesh_terms: D000328:Adult; D001132:Arm / Q000503:physiopathology*; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D004576:Electromyography / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D053580:Muscle Strength / Q000502:physiology; D018908:Muscle Weakness / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*; D018482:Muscle, Skeletal / Q000294:innervation / Q000503:physiopathology; D011782:Quadriplegia / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology*; D013119:Spinal Cord Injuries / Q000150:complications / Q000503:physiopathology*; D055815:Young Adult