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

From: 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

  SB-PRE SB-POST p-Value
Z1 or F2
rc1 or \( {\eta}_p^2 \)2
PLA-PRE PLA-POST p-Value
Z1 or F2
rc1 or \( {\eta}_p^2 \)2
Δ
SB
PRE-POST
Δ
PLA
PRE-POST
p-Value
Z1 or F2
rc1 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
HRmax (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
HRaverage (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
  1. 1Data analyzed by Wilcoxon signed-rank test; effect size expressed as rank correlation coefficient (rc). 2Data analyzed by two-way ANOVA with repeated measurements; effect size expressed as partial eta-squared (\( {\eta}_p^2 \)). Abbreviations: HRaverage – average heart rate, HRmax – 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