23) (Figure 2). The match-induced change in blood [HCO3 -] was significantly different between the 2 trials (interaction effect p < 0.001; effect size = 2.92). Base excess showed opposite patterns between
the 2 trials. The post-match base excess was significantly lower than the pre-match level in the placebo trial (pre: 2.46 ± 1.68; post: 0.12 ± 2.15 mM, p < 0.05; effect size = 1.39) but was significantly elevated in the bicarbonate trial (pre: 3.08 ± 1.47; post: 11.36 ± 3.70 mM, p < 0.05; effect size = 5.63) (Figure 3). Post-match [HCO3 -] and base excess were significantly higher in the bicarbonate AZD4547 trial than those in the placebo trial. Blood [lactate] was significantly increased after the match in both placebo (pre: 1.22 ± 0.54; post: 2.17 ± 1.46 mM, p < 0.05; effect size = 1.76) and bicarbonate (pre: 1.23 ± 0.41; post: 3.21 ± 1.89 mM, p < 0.05; effect size = 4.83) trials (Figure 4). The match-induced change in blood [lactate] was significantly higher in the bicarbonate trial than that in the placebo trial
(interaction effect p < 0.05; effect size = 1.73). Blood pH remained unchanged after the match in the placebo trial (pre: 7.37 ± 0.32; post: 7.37 ± 0.14, p > 0.05) but was significantly increased in the bicarbonate trial (pre: 7.37 ± 0.26; post: 7.45 ± 0.63, p < 0.05; effect size = 0.31) (Figure 5). Figure 2 Blood bicarbonate concentrations before (white square) and after (black square) the simulated match in placebo and bicarbonate trials. ***p < 0.001, before vs after in the same trial; ††p < 0.01, bicarbonate vs placebo trial. 4SC-202 manufacturer Figure 3 Blood base excess before (white square) and after (black square) the simulated match in placebo and bicarbonate trials. **p < 0.01, before vs after in the same trial; ††p < 0.01, bicarbonate vs placebo trial. Figure 4 Blood lactate concentrations before (white square)
and after (black square) the simulated match in placebo and bicarbonate trials. **p < 0.01, before vs after in the same trial. Figure 5 Blood pH before (white square) and after (black square) the simulated match in placebo and bicarbonate trials. **p < 0.01, before vs after in the same trial. The accuracy and consistency scores of service and ground stroke in the Loughborough Tennis Skill Tests before and after the simulated match in both trials are presented in this website Table 1. The service consistency was significantly decreased after the simulated match in the placebo trial (95% confidence interval (CI) before: 12.7-21.1; after: 6.5-15.7; p < 0.05), but remained unchanged in the bicarbonate trial. The effect size for service consistency was 1.07 and 0.04 in the placebo and bicarbonate trial, respectively. The match-induced decline in service consistency was significantly larger in the placebo trial compared to that in the bicarbonate trial (interaction effect p = 0.004; effect size = 1.26). The 95% CI for the forehand ground stroke consistency before and after the placebo trial was 8.3-12.7 and 7.6-10.6, respectively.