Fig. 4. Principal components analysis (PCA) on kinematic variables. (A) Principal components 1 and 2 (PC₁ and PC₂) loadings. Loadings are scaled so that the variance of the transformed data is the same along all axes. (B) Transformed data scores on the PC₁ and PC₂ axes. According to the kinematic strength metric, based on the PCA, responses with scores in the bottom right are strong, while those in the upper left are weak. The black line separates the two regions.

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