N2 - We investigated the effect of low and high bar velocity on inter- and intrasubject similarity of muscle synergies during bench press. T1 - Inter- and intrasubject similarity of muscle synergies during bench press with slow and fast velocity We concluded that the activation coefficients are robust within conditions, indicating a robust temporal pattern of muscular activity across individuals, but the muscle synergy vector seemed to be individually assigned.", An opposite pattern was observed for the first muscle synergy vector. For the second synergy activation coefficient, the intersubject similarity within the fastvelocity condition was greater than the intrasubject similarity of the activation coefficient across the conditions. Two muscle synergies were sufficient to describe the dataset variability. The intrasubject similarity across conditions and intersubject similarity within conditions were computed for muscle synergy vectors and activation coefficients. Surface electromyography was recorded from 13 muscles, and muscle synergies were extracted using a nonnegative matrix factorization algorithm. A total of 13 trained male subjects underwent two exercise conditions: a slow- and a fast-velocity bench press. We concluded that the activation coefficients are robust within conditions, indicating a robust temporal pattern of muscular activity across individuals, but the muscle synergy vector seemed to be individually assigned.Ībstract = "We investigated the effect of low and high bar velocity on inter- and intrasubject similarity of muscle synergies during bench press. We investigated the effect of low and high bar velocity on inter- and intrasubject similarity of muscle synergies during bench press.
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