Table 1 Main characteristics of the studied groups according to glucose tolerance—with normal glucose tolerance (NGT), with high 1-h postpoad glucose during OGTT > 8.6 mmol/l (1hrOGTT), and with isolated impaired glucose tolerance (iIGT)

number

14

19

42

Age (years)

43.6 ± 10.7

45.6 ± 8.9

47.6 ± 11.8

0.469

BMI (kg/m²)

30.5 ± 6.9

33.7 ± 6.9

31.0 ± 6.5

0.284

A1c (%)

5.4 ± 0.4

5.4 ± 0.3

5.5 ± 0.3

0.533

eAG (mmol/l)

6.0 ± 0.6

6.1 ± 0.5

6.2 ± 0.5

0.513

AUC-glucoseOGTT (mmol/l)

777 ± 110

1007 ± 94*

1167 ± 169*^,#

 < 0.0001

*< 0.0001 vs NGT

#< 0.0001 vs 1hrOGTT

Time in tight target (3.9–7.8 mmol/l) (%)

99 (99–100)

97 (94–99)

99 (97–99)*

0.005

*0.013 vs NGT