Table 1

Baseline characteristics for subjects with marginal (n = 15) or adequate (n = 7) vitamin C status


Marginal vitamin C status Plasma vitamin C <34 μmol/L
Adequate vitamin C status Plasma vitamin C ≥34 μmol/L
p value1

Vitamin C, μmol/L
18.1 ± 2.5
42.9 ± 3.4
.000
BMI, kg/m2
25.0 ± 1.3
23.3 ± 1.4
.436
Total carnitine, ng/ml
12.0 ± 0.8
6.5 ± 0.9
.000
RER2
0.87 ± 0.02
0.83 ± 0.01
.034
Fat energy*, kcals/kg
1.02 ± 0.12
1.36 ± 0.11
.045
VO2max*, ml/kg/min
37.5 ± 2.5
36.9 ± 2.3
.866

1Independent t-test.

2Computed at steady state during 60-minute submaximal walk test.

Johnston et al. Nutrition & Metabolism 2006 3:35   doi:10.1186/1743-7075-3-35