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·l1) 20.3 (10.0) 67.6 (26.5)* 19.6 (9.7) 80.9 (29.1) *
Lactate (mmol·l1) 1.8 (0.7) 6.9 (1.9) * 1.6 (0.8) 6.9 (2.2) *
Glucose (mmol·l1) 4.1 (0.7) 3.9 (0.9) 4.0 (0.9) 3.9 (0.9)
Urea (mmol·l1) 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 ml1) 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):
from corresponding Pre value
from corresponding value in Test 1.