Table 5. Changes in the pH and plasma lactate concentration of fillies subjected to incremental exercise tests (IET-1 and IET-2) and a 42-days aerobic fitness program associated with exercise L-carnitine or chromium (Chr) oral supplementation.

Variables	Groups	Evaluation times
		IET-1		IET-2
		Baseline	Fatigue	Before	Fatigue
pH	Car	7.43±0.01	7.24±0.02*	7.45±0.01	7.25±0.03*
	Chr	7.47±0.02	7.18±0.12*	7.45±0.01	7.15±0.11*
	E	7.44±0.01	7.15±0.12*	7.44±0.01	7.23±0.06*
	ET	7.45±0.02	7.19±0.09*	7.45±0.01	7.21±0.07*
	F value	1.76	0.49	0.87	0.89
	P value	0.201	0.735	0.479	0.466
Lactate (mmol / L)	Car	0.78±0.29	20.9±1.0*	1.38±0.14	16.6±0.6*
	Chr	0.67±0.13	22.9±6.0*	1.42±0.03	24.6±4.8*
	E	0.72±0.06	22.7±4.9*	1.48±1.06	16.7±3.2*
	ET	0.73±0,17	22.2±4.0*	1.43±0.53	19.3±4.9*
	F value	0.19	0.12	0.01	2.25
	P value	0.890	0.940	0.998	0.127

L-Carnitine group (Car, n = 3). Chromium group (Chr, n = 3). Exercise group (E, n = 3): exercise without supplementation and conditioning. Exercise total group (ET, n = 9): all animals that underwent at the exercise (the incremental exercise tests and the conditioning period) were analyzed as a separate treatment.

*indicates increase in relation to the baseline values.