Fig. 5.

Nonnegative matrix factorization of unilateral fast limb muscle activations. The organization of this figure is similar to that of Fig. 4, however, only 12 muscles from the faster moving lower limb are included. Temporal patterns are ordered with reference to dominant peak location, although pattern 3 was relatively inconsistent between participants, and the general pattern of this temporal pattern was used for ordering. This figure shows the slight temporal shift of pattern 2 in the split-belt conditions. As well, the loadings for the split-belt conditions appear to be similar to that seen in the 6 km/h tied condition.