Table 2. Effects of fasting and meal on metabolic factors.
During fasting, two measurements were made: baseline, and after completion of the MRI scan. On the meal day, three measurements were made: baseline, 30 minutes after consumption of the mixed meal, and after exiting the scanner. Pre-post measurements were compared using paired t-tests for the fasting day, and repeated-measures analysis of variance on the fed day. Means sharing the same superscript are not significantly different from each other (Fischer’s Least Significant Difference).
| Variable | Fasting | Fed | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Baseline | Post-Scan | df | p | Baseline | Pre-Scan | Post-Scan | F | df | p | |
| Glucose | 80.5 (12.1) | 82.8 (12.8) | 15 | 0.43 | 75.2 (12.9)a | 103.4 (29.6)b | 84.0 (15.5)c | 19.1 | 2,28 | < .001 |
| Insulin | 8.0 (5.0) | 6.4 (5.1) | 15 | 0.02 | 7.2 (5.8)a | 35.2 (20.2)b | 14.5 (12.3)c | 27.4 | 2,26 | < .001 |
| HDL | 48.4 (13.9) | 48.0 (12.7) | 15 | 0.78 | 52.4 (16.1) | 52.8 (17.5) | 51.6 (15.7) | 0.08 | 2,28 | 0.92 |
| LDL | 100.9 (17.8) | 95.9 (29.0) | 14 | 0.35 | 102.5 (30.9) | 100.5 (32.0) | 100.6 (28.3) | 0.56 | 2,26 | 0.58 |
| VLDL | 17.9 (8.4) | 18.1 (9.5) | 14 | 0.86 | 18.3 (11.7)ab | 18.4 (13.4)a | 20.3 (14.7)b | 4.14 | 2,26 | 0.03 |
| Cholesterol | 169.8 (24.0) | 169.4 (21.0) | 15 | 0.93 | 179.7 (29.4) | 177.5 (30.1) | 179.9 (23.7) | 2.15 | 2,28 | 0.14 |
| Triglycerides | 119.1 (123.1) | 114.9 (105.5) | 15 | 0.58 | 113.6 (110.1) | 91.3 (66.7) | 100.9 (74.5) | 1.11 | 2,28 | 0.34 |