TABLE 2.

Blood metabolic indicators at rest and during severe-intensity cycling.

		PLA30 min	PBMT30 min	PLA6 h	PBMT6 h	ANOVA
						Main Effect: Time	Main Effect: Condition	Interaction: Time × Condition
pH (a.u.)	Rest	7.46 ± 0.03 (7.44 to 7.48)	7.47 ± 0.02 (7.45 to 7.49)	7.46 ± 0.03 (7.44 to 7.48)	7.46 ± 0.03 (7.44 to 7.48)	p < 0.01 $n_{\text{p}}^2$ = 0.83	p = 0.74 $n_{\text{p}}^2$ = 0.04	p = 0.26 $n_{\text{p}}^2$ = 0.14
	Exercise	7.34 ± 0.06 (7.30 to 7.38)	7.34 ± 0.04 (7.31 to 7.37)	7.35 ± 0.04 (7.32 to 7.38)	7.35 ± 0.05 (7.32 to 7.39)
	Δ%	−1.56 ± 0.97 (−2.18 to −0.94)	−1.77 ± 0.67 (−2.20 to −1.35)	−1.42 ± 0.81 (−1.94 to −0.90)	−1.47 ± 0.77 (−1.97 to −0.98)		p = 0.26 $n_{\text{p}}^2$ = 0.14
${\text{HCO}}_3^{-}$ (mmol/L)	Rest	26.21 ± 2.20 (24.81 to 27.61)	26.85 ± 1.45 (25.92 to 27.77)	27.00 ± 1.69 (25.90 to 28.08)	26.74 ± 1.50 (25.78 to 27.69)	p < 0.01 $n_{\text{p}}^2$ = 0.97	p = 0.26 $n_{\text{p}}^2$ = 0.11	p = 0.55 $n_{\text{p}}^2$ = 0.06
	Exercise	19.10 ± 2.23 (17.68 to 20.51)	18.50 ± 1.52 (17.53 to 19.47)	19.21 ± 1.10 (18.51 to 19.91)	19.38 ± 1.28 (18.56 20.20)
	Δ%	−26.17 ± 15.41 (−35.97 to −16.38)	−30.94 ± 6.01 (−34.77 to −27.21)	−28.63 ± 5.13 (−31.90 to −25.37)	−27.39 ± 5.14 (−30.66 to −24.12)		p = 0.46 $n_{\text{p}}^2$ = 0.06
BE (mmol/L)	Rest	2.46 ± 1.58 (1.40 to 3.52)	2.73 ± 1.76 (1.55 to 3.92)	2.70 ± 1.86 (1.45 to 3.96)	2.75 ± 1.66 (1.63 to 3.87)	p < 0.01 $n_{\text{p}}^2$ = 0.98	p = 0.33 $n_{\text{p}}^2$ = 0.11	p = 0.53 $n_{\text{p}}^2$ = 0.07
	Exercise	−7.24 ± 2.11 (−8.66 to −5.82)	−7.50 ± 2.16 (−8.96 to −6.05)	−6.60 ± 1.37 (−7.53 to −5.68)	−6.44 ± 1.81 (−7.66 to −5.22)
	Δ%	−906.75 ± 1415.22 (−1857.51 to 44.00)	−929.28 ± 1410.62 (−1876.95 to 18.39)	−1200.53 ± 2176.54 (−2662.76 to 261.68)	−450.81 ± 339.51 (−678.90 to −222.72)		p = 0.62 $n_{\text{p}}^2$ = 0.05
K+ (mmol/L)	Rest	5.20 ± 0.43 (4.92 to 5.48)	5.12 ± 0.93 (4.53 to 5.72)	5.48 ± 0.73 (5.02 to 5.94)	5.21 ± 0.59 (4.83 to 5.59)	p < 0.01 $n_{\text{p}}^2$ = 0.68	p = 0.24 $n_{\text{p}}^2$ = 0.12	p = 0.22 $n_{\text{p}}^2$ = 0.11
	Exercise	5.67 ± 0.83 (5.14 to 6.20)	6.25 ± 0.63 (5.85 to 6.65)	5.97 ± 0.99 (5.34 to 6.60)	5.96 ± 0.67 (5.53 to 6.39)
	Δ%	9.53 ± 16.82 (−1.15 to 20.22)	24.40 ± 16.70 (13.79 to 35.02)	10.26 ± 20.68 (−2.87 to 23.40)	15.46 ± 15.88 (5.36 to 25.55)		p = 0.15 $n_{\text{p}}^2$ = 0.15
	[La–]rest (mmol/L)	0.71 ± 0.32 (0.51 to 0.91)	0.98 ± 0.43 (0.72 to 1.24)	0.97 ± 0.69 (0.55 to 1.39)	0.76 ± 0.27 (0.59 to 0.93)		p = 0.25 $n_{\text{p}}^2$ = 0.11
	AUC of [La–] (mmol/min)	22.40 ± 8.58 (17.22 to 27.61)	20.33 ± 7.81 (15.62 to 25.01)	19.84 ± 7.72 (15.10 to 24.50)	22.57 ± 11.64 (15.47 to 29.61)		p = 0.56 $n_{\text{p}}^2$ = 0.05
	[La–]peak (mmol/L)	12.23 ± 1.85 (11.12 to 13.31)	12.39 ± 1.72 (11.30 to 13.39)	12.45 ± 1.95 (11.30 to 13.60)	12.33 ± 2.13 (11.04 to 13.6)		p = 0.95 $n_{\text{p}}^2$ = 0.01

Values are expressed as Mean ± SD (CI95%). $n_{\text{p}}^2$ = partial eta squared; ${\text{HCO}}_3^{-}$ = sodium bicarbonate; BE = base excess; K⁺ = potassium ion; [La^–]_rest = blood lactate concentration at rest; [La^–]_peak = peak of blood lactate concentration; AUC = area under curve; PBMT_{30 min} = photobiomodulation treatment 30 min before exercise; PLA_{30 min} = placebo treatment 30 min before exercise; PBMT_{6 h} = photobiomodulation treatmen 6 h before exercise; PLA_{6 h} = placebo treatment 6 h before exercise. n = 13.