Evaluation of arm dominance by using the mechanomyographic signal.
The authors collected and compared mechanomyo-graphic (MMG) signal behavior from the biceps brachii of left and right arms of right-handed men (n = 19) and women (n = 20) who performed isometric contractions at 5 contraction levels. Mean frequency (MF) and RMS values were calculated from the MMG signals that arose from lateral oscillations of muscle fibers. Across genders and arms, RMS values increased with contraction level and MF values decreased with increase in muscle contraction. The authors found no significant difference in those parameters between dominant and nondominant arms. Therefore, summation of muscle twitches obtained from the MMG signal collected in biceps brachii muscle does not reveal any difference between dominant and nondominant arms.
Garcia
Marco Antonio Cavalcanti
MA
School of Physical Education and Sports, Federal University of Rio de Janeiro, Brazil. marcoacg@unisys.com.br
Vargas
Cláudia Domingues
CD
de Souza
Márcio Nogueira
MN
Imbiriba
Luis Aureliano
LA
de Oliveira
Líliam Fernandes
LF
D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D001132:Arm / Q000502:physiology*; D004576:Electromyography / Q000379:methods; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D007537:Isometric Contraction / Q000502:physiology*; D008297:Male; D009068:Movement / Q000502:physiology*; D018482:Muscle, Skeletal / Q000502:physiology*; D012016:Reference Values; D013314:Stress, Mechanical