Sodium Bicarbonate and Time-to-Exhaustion Cycling Performance: A Retrospective Analysis Exploring the Mediating Role of Expectation

Sports Medicine - Open

Table 1 Mean ± SD for blood metabolites at baseline, pre-exercise and post-exercise

	SB-SOL	SB-CAP	PL-SOL	PL-CAP
pH
Baseline	7.445 ± 0.031	7.442 ± 0.027	7.443 ± 0.021	7.434 ± 0.026
Pre-exercise	7.521 ± 0.031 *	7.521 ± 0.040 *	7.438 ± 0.030	7.447 ± 0.032
Post-exercise	7.287 ± 0.057 *	7.293 ± 0.073 *	7.226 ± 0.064	7.237 ± 0.058
Bicarbonate (mmol·L⁻¹)
Baseline	26.8 ± 1.7	26.1 ± 1.5	26.5 ± 1.5	26.6 ± 1.5
Pre-exercise	34.4 ± 2.4 *^#	32.2 ± 1.6 *	26.4 ± 1.1	27.1 ± 1.3
Post-exercise	15.5 ± 2.6 *	15.9 ± 3.2 *	12.6 ± 2.5	13.0 ± 1.9
Base excess (mmol·L⁻¹)
Baseline	2.8 ± 1.7	2.1 ± 1.6	2.4 ± 1.3	2.5 ± 1.1
Pre-exercise	10.6 ± 2.2 *^#	8.9 ± 1.8 *	2.5 ± 1.2	3.2 ± 1.6
Post-exercise	-9.8 ± 3.1 *	-9.3 ± 3.9 *	−13.4 ± 3.1	−12.9 ± 2.6
Lactate (mmol·L⁻¹)
Baseline	1.34 ± 0.36	1.18 ± 0.37	1.23 ± 0.47	1.11 ± 0.33
Pre-exercise	1.50 ± 0.35	1.80 ± 0.62	1.74 ± 0.40	1.70 ± 0.53
Post-exercise	14.09 ± 3.15 *	13.58 ± 2.95 *	11.26 ± 2.17	11.73 ± 2.83