Fig. 5.

Changes in average squared Mahalanobis distances (± confidence intervals) across time points for 3 methods: assuming independence across targets (Ind.), assuming uniform correlation across targets (Unif.), and assuming correlations within subgroups for single-joint (Sing.) and multijoint (Mult.) targets. Negative values represent an improvement in reaching kinematics. The only changes that reach statistical significance (*) occur between pretest 2 and posttest 1, for the affected/trained arm.