2.3.5. Statistical Analysis
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All data are presented as means ± standard errors, and 95% confidence intervals (CI) are also presented. The test–retest reliability for peak cadence and peak and mean power outputs during the first 6 s maximal sprint was calculated. The intraclass correlation coefficients were 0.96, 0.99, and 0.93, respectively; the coefficients of variation were 0.66%, 0.66%, and 2.68%, respectively. The principal analysis was conducted with the generalized linear mixed model (GLMM) using the “lme4” package (ver. 1.1.27.1) of R (ver. 4.1.2). The linear predictors, as fixed effects, were the trial type (ASP or PLA), timepoint, interaction (trial × timepoint), sequence (trial order), and period (first or second trial). The participants were the random effects. The following model was used:When evaluating the blood pH, HCO