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Table 2 Results of Wingate anaerobic test before (WAnT_1) and after (WAnT_2) 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

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 PCT (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

HRmax (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

  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: HRmax – maximal heart rate, PCT – 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