Table 9.

Effect of matcha or caffeine intake on motor function-related tasks.

Task			−4 Weeks (1)	0 Weeks (2)	12 Weeks (3)	Change from Baseline		p-Values (KW Test)
			(Baseline)	(Single Dose)		0 W (4)	12 W (5)	(1)	(2)	(3)	(4)	(5)
FTT	Right taps,	Placebo	60.9 ± 5.2	61.1 ± 4.6	59.8 ± 5.4	0.12 ± 1.7	−1.12 ± 4.5	0.50	0.93	0.29	0.45	0.39
	average	Caffeine	58.8 ± 5.2	60.6 ± 4.0	56.6 ± 7.9	1.82 ± 3.6	−2.12 ± 6.4
		Matcha	59.4 ± 6.2	60.5 ± 5.6	59.5 ± 5.6	1.12 ± 4.0	0.12 ± 4.9
	Left taps,	Placebo	57.1 ± 5.3	57.1 ± 5.8	54.9 ± 6.1	0.00 ± 3.0	−2.18 ± 3.5	0.12	0.18	0.14	0.37	0.51
	average	Caffeine	53.4 ± 5.5	53.4 ± 6.5	50.6 ± 7.0	0.00 ± 3.8	−2.76 ± 5.3
		Matcha	54.1 ± 5.9	55.6 ± 5.3	53.6 ± 5.9	1.59 ± 2.9	−0.47 ± 3.6

Values are presented as the mean ± standard deviation. Group (inter) analysis was performed using the Kruskal–Wallis test (KW). (1) (2) (3) (4) (5) The numbers in brackets at −4 weeks, 0 weeks and 12 weeks corresponded to the numbers listed in the column with the p-value for the KW test. Time (intra) was analyzed using Dunnett’s test (T3) for intra-group comparisons, using the baseline condition as the reference (baseline vs. 0 W and baseline vs. 12 W). Abbreviations: FTT, Finger Tapping test; KW, Kruskal–Wallis test; W, weeks.