Table 2.

Behavioral performances of the TCC and CON groups at pre- and post-tests.

	TCC group			CON group			Between-group differences at pre-test	Between-group differences at post-test
	Pre-test Mean (SD)	Post-test Mean (SD)	Within-group differences	Pre-test Mean (SD)	Post-test Mean (SD)	Within-group differences
Task-switching function
IEDerrors	27.1 (13.2)	19.2 (10.5)	0.016*	25.1 (15.7)	27.2 (14.3)	0.109	0.726	0.090
Physical functions
Knee extensor strength (kg)	22.8 (5.8)	31.9 (9.5)	<0.001†	23.1 (4.1)	24.9 (3.9)	0.024	0.977	0.005§
6MWT (m)	474.4 (75.0)	518.2 (66.4)	<0.001‡	492.1 (49.7)	490.2 (51.7)	0.795	0.399	0.109

6MWT, Six-Minute Walk Test; CON, control group; IED_errors, total errors of Intra/Extra-dimensional set shift test; SD, standard deviation; TCC, Tai Chi Chuan group.

^*p < 0.025: significant within-group differences between pre- and post-test IED_errors using Wilcoxon signed-rank tests for the TCC group.

^†p < 0.0125: significant within-group differences between pre- and post-test knee extensor strength using paired t-test for the TCC group.

^‡p < 0.0125: significant within-group differences between pre- and post-test 6MWT using Wilcoxon signed-rank test for the TCC group.

^§p < 0.0125: significant between-group differences in post-test knee extensor strength using independent t-test.