. 2020 Jan 31;71:229–242. doi: 10.2478/hukin-2019-0081

Table 2.

Descriptive performances of taekwondo athletes, Student’s t-test and mean differences for the test–retest complemented with reliability statistics of the WAnT, SJ and CMJ

	Variables		Test	Retest	Mean difference ± standard deviation	t	p	ICC(95% CI)	SEM	SWC	MDC 95%
		W	622.96 ± 188.63	622.48 ± 165.91	0.479 ± 66.961	0.030	0.976	0.965 (0.906 to 0.987)	12.51 7	35.45	34.724
	P_peak
		W·kg^-0.67	39.03 ± 9.02	39.09 ± 7.60	˗0.062 ± 4.128	˗0.063	0.950	0.938 0.977(0.834 ) to	1.028	1.66	2.849
		W	443.69 ± 122.89	443.32 ± 109.78	0.367 ± 27.240	0.057	0.955	0.987 (0.965 to 0.995)	3.106	23.27	8.609
	P_mean
WAnT (n=18)		W·kg^-0.67	27.83 ± 5.71	27.86 ± 4.72	˗0.022 ± 1.737	˗0.054	0.957	0.973 0.990(0.928 ) to	0.285	1.04	0.791
	FI	W·s^-1	11.57 ± 4.43	12.60 ± 3.47	˗1.034 ± 3.071	˗1.429	0.171	0.817 0.931(0.524 ) to	1.314	0.79	3.641
	HR_{pea k}	bpm	186.39 ± 9.88	185.72 ± 8.96	0.667 ± 9.101	0.311	0.760	0.707 (0.199 to 0.891)	4.926	1.88	13.655
	RPE	˗	15.06 ± 1.26	15.22 ± 1.52	˗0.167 ± 1.098	˗0.644	0.528	0.821 0.933(0.523 ) to	0.465	0.28	1.288
SJ (n=16)	P_peak	W·kg^˗0.67	170.34 23.37 ±	171.55 24.70 ±	˗1.203 ± 3.363	˗1.431	0.173	0.995 0.998(0.985 ) to	0.283	4.81	0.659
CMJ (n=16)	P_peak	W·kg_-^0.67	174.89 26.06 ±	179.02 26.30 ±	˗4.128 ± 9.151	˗1.804	0.091	0.964 0.988(0.893 ) to	1.736	5.24	4.813

Values are presented as mean ± standard deviation. WAnT, 30-s Wingate anaerobic test; SJ, squat jump; CMJ, countermovement jump; P_peak, peak power; P_mean, mean power; FI, fatigue index; HR_peak, peak heart rate; RPE, ratings of perceived exertion; t, Student’s t; p, significations; ICC, intraclass-correlation coefficient; CI, confidence interval; SEM, standard error of measurement; SWC, smallest worthwhile change; MDC95%, minimal detectable change at 95% confidence interval