Table 5.

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

CST	Ballet (n = 10)		Handball (n = 12)		Controls (n = 22)		t (20)	p	d
	M	SD	M	SD	M	SD
HANDM1/R	0.00056	0.00004	0.00060	0.00002	0.00060	0.00005	−3.01	0.014	−1.37
HANDM1/L	0.00058	0.00004	0.00060	0.00003	0.00060	0.00040	−1.30	0.280	−0.60
HANDS1/R	0.00060	0.00004	0.00058	0.00004	0.00059	0.00007	1.63	0.190	0.52
HANDS1/L	0.00062	0.00003	0.00064	0.00003	0.00063	0.00005	−0.97	0.395	−0.70
FOOTM1/R	0.00061	0.00004	0.00057	0.00003	0.00060	0.00005	3.00	0.019	1.20
FOOTM1/L	0.00063	0.00004	0.00055	0.00003	0.00061	0.00005	6.30	1.60E −5	2.41
FOOTS1/R	0.00064	0.00004	0.00063	0.00003	0.00065	0.00003	0.63	0.539	0.30
FOOTS1/L	0.00067	0.00003	0.00057	0.00003	0.00063	0.00005	7.19	4.63E −6	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.