The influence of progressive-chronic and acute sodium bicarbonate supplementation on anaerobic power and specific performance in team sports: a randomized, double-blind, placebo-controlled crossover study

Table 3 Results in hockey-specific performance test – chronic supplementation strategy

	SB_-PRE	SB_-POST	p-Value Z¹ or F² r_c¹ or \( {\eta}_p^2 \)²	PLA_-PRE	PLA_-POST	p-Value Z¹ or F² r_c¹ or \( {\eta}_p^2 \)²	Δ SB _PRE-POST	Δ PLA _PRE-POST	p-Value Z¹ or F² r_c¹ or \( {\eta}_p^2 \)²
Time (s)	919 ± 42	912 ± 27	0.050¹	919 ± 33	920 ± 31	0.088²	−6.5 ± 53.1	0.5 ± 32.6	0.638¹
			1.956¹			3.576²			0.471¹
			0.590¹			0.263²			0.136¹
HR_max (bpm)	179 ± 5	179 ± 7	0.756¹	179 ± 9	179 ± 7	0.251²	−0.3 ± 3.9	−0.7 ± 9.4	0.424¹
			0.311¹			1.485²			0.800¹
			0.094¹			0.129²			0.241¹
HR_average (bpm)	160 ± 6	159 ± 7	0.266¹	159 ± 7	160 ± 7	0.644²	−1.2 ± 4.7	1.0 ± 4.7	0.963²
			1.111¹			0.227²			0.002²
			0.335¹			0.022²			0.000²

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 (\( {\eta}_p^2 \)). Abbreviations: HR_average – average heart rate, HR_max – maximal heart rate, PLA_-PRE – before placebo treatment, PLA_-POST – after placebo treatment, SB_-PRE – before sodium bicarbonate supplementation, SB_-POST – after sodium bicarbonate supplementation

ISSN: 1743-7075