2.6.1. Group correlations between goniometry and EMG parameters
The Pearson Product–Moment correlation coefficient (Altman, 1991) was calculated between the various goniometry and EMG summary measures with the statistical software JMP® (Version 7.0, SAS Institute, Cary, NC, USA). Correlations greater than 0.6 were tabulated and subjected to further analysis. This correlation threshold was regarded as being strong enough for practical purposes and gives for n = 15 a p-value less than 0.02