. 2003 May 23;550(Pt 2):585–603. doi: 10.1113/jphysiol.2003.039743

Table 4.

Arterial and femoral venous ion concentrations in whole blood, plasma and erythrocytes

Measurement	Condition	Rest	30%	65%	75%
Whole blood
[Lac⁻]_a (mequiv l⁻¹)	Pre	0.7 ± 0.1	1.1 ± 0.2	3.6 ± 0.5^*^‡	5.7 ± 0.8^*^‡^‡
	Post	0.7 ± 0.1	0.9 ± 0.1	2.5 ± 0.4^*^‡^§	3.7 ± 0.5^*^‡^§
[Lac⁻]_v (mequiv l⁻¹)	Pre	0.7 ± 0.1	1.1 ± 0.2	3.9 ± 0.6^*^‡	6.0 ± 0.9^*^‡^§
	Post	0.8 ± 0.1	0.9 ± 0.2	2.4 ± 0.4^*^‡^§	3.8 ± 0.6^*^‡^‡
[Cl⁻]_a (mequiv l⁻¹)	Pre	82.2 ± 1.3	85.8 ± 0.9	90.8 ± 2.2^*^‡	90.3 ± 1.0^*^‡
	Post	86.7 ± 1.1	85.9 ± 0.9	87.5 ± 1.8^§	89.5 ± 1.3
[Cl⁻]_v (mequiv l⁻¹)	Pre	85.7 ± 1.9	85.8 ± 1.1	88.3 ± 1.1	92.0 ± 1.8^*^‡^‡
	Post	86.5 ± 0.8	87.8 ± 0.6	85.9 ± 1.5	90.2 ± 0.8^*^‡
[Na⁺]_a (mequiv l⁻¹)	Pre	100.8 ± 2.1	101.3 ± 3.2	104.5 ± 2.6	105.8 ± 2.4^*^‡
	Post	106.6 ± 1.6^§	106.1 ± 1.8^§	106.4 ± 3.0	107.9 ± 3.8
[Na⁺]_v (mequiv l⁻¹)	Pre	103.6 ± 3.5	105.8 ± 1.4	105.2 ± 4.0	106.6 ± 3.9
	Post	103.3 ± 3.2	104.8 ± 2.4	104.6 ± 2.5	106.9 ± 3.2
[K⁺]_a (mequiv l⁻¹)	Pre	49.3 ± 1.4	48.2 ± 1.3	48.8 ± 1.7	48.1 ± 2.2
	Post	47.0 ± 1.8^§	46.9 ± 1.8^§	47.9 ± 2.1	46.6 ± 2.4
[K⁺]_v (mequiv l⁻¹)	Pre	48.3 ± 1.5	48.5 ± 1.7	48.4 ± 2.2	43.0 ± 3.6^*^‡^‡
	Post	47.2 ± 1.8	46.1 ± 1.8^§	48.0 ± 1.8	47.4 ± 2.3^§
Plasma
[Lac⁻]_a (mequiv l⁻¹)	Pre	1.2 ± 0.2	1.4 ± 0.2	5.2 ± 0.9^*^‡	8.1 ± 1.1^*^‡^‡
	Post	0.8 ± 0.1	1.1 ± 0.2	3.9 ± 0.8^*^§	5.8 ± 1.1^*^‡^‡^§
[Lac⁻]_v (mequiv l⁻¹)	Pre	1.2 ± 0.2	1.5 ± 0.3	5.4 ± 0.9^*^‡	8.8 ± 1.2^*^‡^‡
	Post	0.9 ± 0.1	1.2 ± 0.2	4.0 ± 0.9^*^§	6.4 ± 1.2^*^‡^‡^§
[Cl⁻]_a (mequiv l⁻¹)	Pre	106.1 ± 1.2	106.8 ± 0.9	109.2 ± 0.7^*^‡	109.3 ± 0.5^*^‡
	Post	108.6 ± 0.8^§	109.2 ± 0.7^§	109.8 ± 0.6^*	109.9 ± 0.7^*^§
[Cl⁻]_v (mequiv l⁻¹)	Pre	105.3 ± 1.0	106.1 ± 0.6	106.5 ± 0.5	107.0 ± 0.5^*
	Post	107.9 ± 0.5^§	107.6 ± 0.5^§	108.8 ± 0.9^§	108.4 ± 0.6
[Na⁺]_a (mequiv l⁻¹)	Pre	144.2 ± 0.6	143.4 ± 0.9	146.4 ± 0.8^*^‡	147.1 ± 0.7^*^‡
	Post	145.1 ± 1.5	146.7 ± 1.17^§	146.2 ± 0.4	147.2 ± 0.8^*
[Na⁺]_v (mequiv l⁻¹)	Pre	143.7 ± 1.0	145.7 ± 0.7^*	147.2 ± 0.8^*	148.6 ± 0.7^*^‡
	Post	144.7 ± 1.0	145.9 ± 0.7	147.7 ± 1.1^*	148.5 ± 0.9^*^‡
[K⁺]_a (mequiv l⁻¹)	Pre	4.22 ± 0.12	4.59 ± 0.06^*	5.16 ± 0.08^*^‡	5.52 ± 0.15^*^‡^‡
	Post	4.39 ± 0.13	4.72 ± 0.10^*	5.19 ± 0.18^*^‡	5.32 ± 0.13^*^‡^‡
[K⁺]_v (mequiv l⁻¹)	Pre	4.03 ± 0.08	4.62 ± 0.06^*	5.15 ± 0.09^*^‡	5.62 ± 0. 13^*^‡^‡
	Post	4.21 ± 0.13	4.67 ± 0.10^*	5.10 ± 0.10^*^‡	5.37 ± 0.13^*^‡^‡^§
Erythrocytes
[Lac⁻]_a (mequiv l⁻¹)	Pre	0.04 ± 0.4	0.7 ± 0.1	1.4 ± 0.4^*	2.8 ± 0.6^*^‡^‡
	Post	0.5 ± 0.1	0.4 ± 0.1	0.6 ± 0.7	0.9 ± 0.9^§
[Lac⁻]_v (mequiv l⁻¹)	Pre	0.1 ± 0.3	0.6 ± 0.1	2.2 ± 0.6^*^‡	2.8 ± 0.8^*^‡
	Post	0.6 ± 0.1	0.4 ± 0.2	0.4 ± 0.7^§	0.3 ± 0.9^§
[Cl⁻]_a (mequiv l⁻¹)	Pre	51.5 ± 1.0	57.8 ± 1.5	67.3 ± 5.4^*^‡	67.3 ± 3.3^*^‡
	Post	57.0 ± 2.7^§	51.2 ± 4.1^§	56.2 ± 4.2^§	60.5 ± 5.0^‡^§
[Cl⁻]_v (mequiv l⁻¹)	Pre	61.2 ± 4.9	59.8 ± 3.7	67.2 ± 3.2	75.0 ± 4.5^*^‡^‡
	Post	56.6 ± 2.3	59.8 ± 2.3	55.0 ± 3.8^§	65.4 ± 2.4^§
[Na⁺]_a (mequiv l⁻¹)	Pre	44.8 ± 2.7	46.3 ± 3.3	53.6 ± 5.1	56.8 ± 4.7^*
	Post	54.8 ± 2.2^§	47.9 ± 4.6	51.1 ± 5.3	54.1 ± 7.2
[Na⁺]_v (mequiv l⁻¹)	Pre	54.7 ± 6.4	55.1 ± 5.2	58.1 ± 7.8	60.6 ± 7.2
	Post	46.8 ± 5.3	47.7 ± 4.2	46.9 ± 3.4	51.8 ± 4.9
[K⁺]_a (mequiv l⁻¹)	Pre	107.5 ± 2.2	105.9 ± 2.1	102.4 ± 3.2	98.8 ± 5.0^*
	Post	104.4 ± 2.5	109.0 ± 3.5	107.4 ± 1.3^§	104.0 ± 4.2^§
[K⁺]_v (mequiv l⁻¹)	Pre	103.4 ± 4.4	103.6 ± 2.9	97.5 ± 5.5	85.2 ± 7.8^*^‡^‡
	Post	106.9 ± 1.9	104.0 ± 3.0	105.9 ± 1.7^§	104.1 ± 3.6^§

Significantly different from rest

^†

significantly different from 30%

^‡

significantly different from 65%

^§

significantly different from pre-training.