Table 1. Changes in biochemical parameters and plasma volume during performance tests before (Test 1) and after (Test 2) rapid body mass loss. Data are means (SD).
Metabolite
Test 1
Test 2
Pre 1
Post 1
Pre 2
Post 2
Ammonia (µmol·l–1)
20.3 (10.0)
67.6 (26.5)*
19.6 (9.7)
80.9 (29.1) *
Lactate (mmol·l–1)
1.8 (0.7)
6.9 (1.9) *
1.6 (0.8)
6.9 (2.2) *
Glucose (mmol·l–1)
4.1 (0.7)
3.9 (0.9)
4.0 (0.9)
3.9 (0.9)
Urea (mmol·l–1)
4.9 (0.8)
4.9 (0.8)
5.9 (1.2) †
5.9 (1.1) †
Haematocrit (%)
42.9 (2.5)
44.7 (3.0) *
44.8 (2.0) †
46.0 (2.7) *†
Haemoglobin (g·100 ml–1)
14.0 (0.9)
14.5 (1.1) *
14.4 (0.9) †
15.0 (1.1) * †
Change in plasma volume (%)
–6.6 (4.4)
–5.6 (3.8)
Pre = before and Post = after performance test blood sample. Significantly different (p < 0.05):