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Table 1 Baseline characteristics and typical structure of training loads in tested athletes during chronic and acute supplementation period

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

  Field hockey players  
Chronic-group Acute-group p-Value
n 12 12
Age (years) 24.3 ± 5.6 22.2 ± 2.6 0.261
Body mass (kg) 75.0 ± 8.3 82.2 ± 14.1 0.142
Body height (cm) 176 ± 5 183 ± 8 0.022
Body Mass Index (kg/m2) 24.2 ± 2.2 24.4 ± 2.3 0.822
Fat mass (%) 12.6 ± 3.2 12.7 ± 4.2 0.942
Fat-free mass (%) 87.4 ± 3.2 87.3 ± 4.2 0.942
Peak power (W) 733 ± 103 792 ± 153 0.272
Mean power (W) 577 ± 73 627 ± 107 0.202
Time in specific performance test (s) 923 ± 42 939 ± 26 0.191
Training sessions per week (no.) 4.7 ± 0.5 4.6 ± 0.7 0.931
Competitions (no.) 1 ± 0 1 ± 0
Training time
 total (hours) 8.2 ± 0.9 7.8 ± 1.1 0.041
 per one training session (hours) 1.8 ± 0.0 1.7 ± 0.0 0.021
  1. 1 Data analyzed by Mann−Whitney U test. 2 Data analyzed by t-test for independent variables