Differences in Cortical Representation and Structural Connectivity of Hands and Feet between Professional Handball Players and Ballet Dancers

Table 5

Group comparisons of radial diffusivity (RD) in the respective corticospinal tracts (CST).

CST	Ballet		Handball		Controls		t (20)	p	d
	M	SD	M	SD	M	SD
	0.00056	0.00004	0.00060	0.00002	0.00060	0.00005	−3.01	0.014	−1.37
	0.00058	0.00004	0.00060	0.00003	0.00060	0.00040	−1.30	0.280	−0.60
	0.00060	0.00004	0.00058	0.00004	0.00059	0.00007	1.63	0.190	0.52
	0.00062	0.00003	0.00064	0.00003	0.00063	0.00005	−0.97	0.395	−0.70
	0.00061	0.00004	0.00057	0.00003	0.00060	0.00005	3.00	0.019	1.20
	0.00063	0.00004	0.00055	0.00003	0.00061	0.00005	6.30		2.41
	0.00064	0.00004	0.00063	0.00003	0.00065	0.00003	0.63	0.539	0.30
	0.00067	0.00003	0.00057	0.00003	0.00063	0.00005	7.19		3.50

Note. Differences were calculated between the two sports groups using unpaired t-tests (false discovery rate [FDR] corrected). Value within brackets represents degrees of freedom; d, effect size (Cohen’s d); L, left hemisphere; M, mean; M1, primary motor cortex; n, number of subjects; p, error probability (two-tailed); R, right hemisphere; S1, primary somatosensory cortex; SD, standard deviation; t, t-value.