. 2020 May 24;17:38. doi: 10.1186/s12986-020-00457-9

Table 2.

Results of Wingate anaerobic test before (WAnT_1) and after (WAnT_2) hockey-specific performance test – chronic supplementation strategy

		SB_-PRE	SB_-POST	p-Value Z¹ or F² r_c¹ or $η_{p}^{2}$ ²	PLA_-PRE	PLA_-POST	p-Value Z¹ or F² r_c¹ or $η_{p}^{2}$ ²
Work effort (W)	WAnT _1	232 ± 19	243 ± 16	0.005¹	234 ± 14	241 ± 14	0.031²
				2.82¹			6.257²
				0.82¹			0.385²
	WAnT _2	225 ± 23	228 ± 19	0.365²	227 ± 14	238 ± 17	0.104²
				0.898²			3.205²
				0.082²			0.243²
Mean power (W)	WAnT _1	575 ± 71	602 ± 67	0.005²	585 ± 73	602 ± 74	0.264²
				12.50²			1.397²
				0.556²			0.123²
	WAnT _2	560 ± 90	567 ± 77	0.382²	569 ± 72	595 ± 74	0.393²
				0.837²			0.796²
				0.077²			0.074²
Peak power (W)	WAnT _1	749 ± 94	777 ± 96	0.002²	753 ± 105	784 ± 104	0.254²
				17.306²			1.464²
				0.634²			0.128²
	WAnT _2	714 ± 109	738 ± 117	0.182¹	723 ± 89	762 ± 105	0.222²
				1.334¹			1.699²
				0.38¹			0.145²
Time to PP (s)	WAnT _1	6.10 ± 1.06	5.84 ± 0.94	0.246²	6.28 ± 0.87	5.98 ± 1.12	0.942²
				1.519²			0.006²
				0.132²			0.001²
	WAnT _2	5.77 ± 0.89	6.19 ± 1.16	0.766²	6.84 ± 2.46	5.88 ± 0.96	0.232²
				0.093²			1.618²
				0.009²			0.139²
Power carry threshold at 97%_PP (W)	WAnT _1	727 ± 91	753 ± 93	0.002²	731 ± 102	761 ± 101	0.244²
				17.191²			1.532²
				0.632²			0.133²
	WAnT _2	693 ± 106	716 ± 114	0.182¹	701 ± 86	740 ± 102	0.228²
				1.334¹			1.650²
				0.38¹			0.142²
Average power over the P_CT (W)	WAnT _1	739 ± 94	765 ± 95	0.001²	742 ± 104	774 ± 102	0.230²
				21.444²			1.632²
				0.682²			0.140²
	WAnT _2	704 ± 108	728 ± 116	0.182¹	713 ± 87	752 ± 102	0.197²
				1.334¹			1.910²
				0.380¹			0.160²
HR_max (bpm)	WAnT _1	175 ± 8	172 ± 9	0.160²	173 ± 9	171 ± 9	0.158¹
				2.300²			1.412¹
				0.187²			0.408¹
	WAnT _2	179 ± 6	177 ± 9	0.683²	177 ± 6	179 ± 8	0.182¹
				0.177²			1.334¹
				0.017²			0.385¹

¹Data analyzed by Wilcoxon signed-rank test; effect size expressed as rank correlation coefficient (r_c). ²Data analyzed by two-way ANOVA with repeated measurements; effect size expressed as partial eta-squared ( $η_{p}^{2}$ ). Abbreviations: HR_max – maximal heart rate, P_CT – power carry threshold at 97%_PP, PLA_-PRE – before placebo treatment, PLA_-POST – after placebo treatment, PP – peak power, SB_-PRE – before sodium bicarbonate supplementation, SB_-POST – after sodium bicarbonate supplementation, WAnT_1 – the Wingate anaerobic test performed before hockey-specific performance test, WAnT_2 – the Wingate anaerobic test performed after hockey-specific performance test