Table 2

Estimated versus measured blood glucose at the final laboratory session (week 7).

N
 Estimated blood glucose
 Measured blood glucose
 Difference (Estimated - Measured)
 Estimation error (%)
All Trained
 64
 84.9 ± 7.81
 87.2 ± 7.92
 -2.3 ± 4.73
 4.1 ± 3.1 (4.7 ± 3.6)4
Hungry Trained5
 18
 78.1 ± 6.7
 80.1 ± 6.3
 -2.0 ± 2.53
 2.6 ± 1.9 (3.2 ± 2.4)
Not-hungry Trained6
 46
 87.6 ± 6.5
 90.0 ± 6.67
 -2.4 ± 5.33
 4.8 ± 3.2 (5.4 ± 3.6)






All Controls
 72
 78.5 ± 11.6
 89.8 ± 10.58
 -11.3 ± 14.89,10
 15.4 ± 10.4 (17.1 ± 11.5)
Hungry Controls5
 4211
 75.9 ± 9.8
 89.2 ± 10.27
 -13.3 ± 11.912,13
 14.9 ± 9.8 (16.7 ± 11.0)
Not-hungry Controls6
 30
 82.2 ± 12.9
 90.6 ± 10.9
 -8.4 ± 17.914,15
 16.1 ± 11.3 (17.8 ± 12.4)

1 Mean ± SD, mg/dL. Subjects stated to be either hungry or not hungry and they estimated their blood glucose at the hospital laboratory before breakfast.

2 Measurements performed by hospital autoanalyzer.

3 Estimated less measured blood glucose, significant at p < 0.01.

4 Absolute value of difference between estimated and measured blood glucose and, inside parenthesis, % of measurement.

5 Subjects who declared feeling hungry at the laboratory investigative session. The agreement limits (mean difference ± 2SD) were -7.0 to +3.0 mg/dL and -41.3 to +18.6 mg/dL in trained and control groups, respectively.

6 Subjects reporting to be not hungry at the laboratory investigative session. The agreement limits were -12.9 to +8.2 mg/dL and -45.0 to +28.0 mg/dL in trained and control groups, respectively.

7 p < 0.01 vs trained hungry subjects in the respective column.

8 p = 0.08, not significant, vs all 64 trained subjects.

9 F = 10.6, p = 0.0001 on the difference between estimated and measured blood glucose.

10 t-test p = 0.0001 vs all trained subjects.

11 p = 0.001 vs number of hungry subjects in the trained group.

12 F = 24.6, p = 0.0001 on the difference between estimated and measured blood glucose.

13 t test p = 0.0001 vs trained hungry subjects.

14 F = 11.9, p = 0.0001 on the difference between estimated and measured blood glucose.

15 t test p = 0.07 vs trained not-hungry subjects.

Ciampolini and Bianchi Nutrition & Metabolism 2006 3:42   doi:10.1186/1743-7075-3-42