Table 6.

Independent variables [SID], P_CO2 and [A_tot] in arterial and femoral venous plasma

Measurement	Condition	Rest	30%	65%	75%
[SID]a (mequiv l−1)	Pre	41.2 ± 0.7	39.8 ± 0.3*	37.1 ± 0.9*‡	35.3 ± 1.1*‡‡
	Post	40.1 ± 1.0	40.1 ± 0.8	37.7 ± 0.9*‡	36.8 ± 1.2*‡‡
[SID]v (mequiv l−1)	Pre	41.2 ± 0.6	42.7 ± 0.6	40.5 ± 1.0	38.5 ± 1.5*‡
	Post	40.1 ± 0.9	41.8 ± 0.3	40.1 ± 1.2	39.0 ± 1.4
Pa,CO2 (mmHg)	Pre	37.8 ± 1.7	40.2 ± 1.3	37.9 ± 1.6	34.1 ± 1.9*‡‡
	Post	36.0 ± 2.0	40.4 ± 1.7*	38.7 ± 1.5*	36.3 ± 1.4‡
Pv,C02 (mmHg)	Pre	45.9 ± 1.3	58.1 ± 1.7*	61.5 ± 1.8*‡	60.9 ± 2.6*‡
	Post	46.8 ± 1.5	57.9 ± 2.1*	60.9 ± 1.9*‡	61.2 ± 1.8*‡
[Atot]a (mequiv l−1)	Pre	15.1 ± 0.9	15.9 ± 1.2	16.0 ± 1.0*	18.0 ± 1.4*‡‡
	Post	15.0 ± 1.5	14.9 ± 1.1	15.5 ± 1.0	15.2 ± 1.2§
[Atot]v (mequiv l−1)	Pre	18.3 ± 1.9	17.3 ± 1.6	17.8 ± 1.5	17.2 ± 1.3
	Post	14.9 ± 1.3	15.2 ± 1.3§	15.2 ± 1.1§	15.0 ± 0.9§

[SID], strong ion difference; P_a,Co2, arterial partial pressure of CO₂; P_v,CO2, venous partial pressure of CO₂; [A_tot], total concentration of weak acids.

^*Significantly different from rest

^†significantly different from 30%

^‡significantly different from 65%

^§significantly different from pre-training.