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. Author manuscript; available in PMC: 2011 Jun 1.
Published in final edited form as: J Electromyogr Kinesiol. 2010 Feb 13;20(3):398–405. doi: 10.1016/j.jelekin.2010.01.002

Table 1.

Two principal components (mean and standard deviation) and their corresponding percentage variance.

Joints Predictable Unpredictable
APA CPA CPA
pc1 sd pc2 sd pc1 sd pc2 sd pc1 sd pc2 sd
Head 0.57 ± 0.31 0.49 ±0.26 0.70 ±0.27 0.47 ±0.37 0.28 ±0.17 0.74 ±0.19
Thorax 0.43 ±0.18 0.36 ±0.25 0.27 ±0.16 0.25 ±0.18 0.15 ±0.09 0.30 ±0.26
Spine 0.31 ±0.13 0.40 ±0.26 0.14 ±0.12 0.28 ±0.34 0.19 ±0.18 0.19 ±0.13
Hip 0.19 ±0.15 0.23 ±0.22 0.29 ±0.21 0.41 ±0.29 0.42 ±0.11 0.23 ±0.16
Knee 0.28 ±0.24 0.27 ±0.17 0.24 ±0.25 0.19 ±0.11 0.67 ±0.10 0.25 ±0.11
Ankle 0.18 ±0.24 0.21 ±0.27 0.22 ±0.19 0.25 ±0.23 0.36 ±0.18 0.23 ±0.19
% of variance 78.78 ±13.11 16.78 ±12.17 76.97 ±13.10 19.12 ±11.96 79.48 ±12.48 16.69 ±11.48