Table 3.
Baseline vs. 4-/8-week outcome comparisons (t-tests): mean (95% confidence interval).
| Overall |
P values |
||||
|---|---|---|---|---|---|
| Baseline | 4 wk | 8 wk | Baseline vs. 4 wk | Baseline vs. 8 wk | |
| Glucose | 89.5 (86.6–92.5) | 90.5 (86.2–94.9) | 92.3 (89.7–95.0) | .64 | .063 |
| Insulin | 20.6 (15.4–25.8) | 21.1 (15.1–27.0) | 20.7 (15.5–25.8) | .81 | .57 |
| HOMA-IR | 4.6 (3.4–5.7) | 4.8 (3.2–6.3) | 4.5 (3.2–5.7) | .69 | .89 |
| Moderate arm | P values | ||||
|---|---|---|---|---|---|
| Baseline | 4 wk | 8 wk | Baseline vs. 4 wk | Baseline vs. 8 wk | |
| Glucose | 91.5 (88.2–94.9) | 89.7 (82.9–96.5) | 91.4 (87.8–95.0) | .56 | .79 |
| Insulin | 23.2 (16.0–30.5) | 23.2 (13.6–32.9) | 22.4 (15.0–29.7) | .99 | .81 |
| HOMA-IR | 5.3 (3.6–7.0) | 5.3 (2.7–8.0) | 4.7 (2.7–6.6) | .99 | .56 |
| Vigorous arm | P values | ||||
|---|---|---|---|---|---|
| Baseline | 4 wk | 8 wk | Baseline vs. 4 wk | Baseline vs. 8 wk | |
| Glucose | 86.8 (81.1–92.4) | 91.6 (85.2–98.1) | 93.5 (88.7–98.3) | .06 | .007 |
| Insulin | 17.0 (8.5–25.5) | 18.1 (10.5–25.7) | 18.5 (9.4–27.5) | .64 | .42 |
| HOMA-IR | 3.6 (2.0–5.2) | 4.0 (2.5–5.6) | 4.2 (2.3–6.2) | .3 | .19 |
Note: Mean (95% confidence intervals for all values). The exact baseline values vary slightly on the basis of metric; the values compared with those in 4 weeks are displayed. The nonparametric test (Wilcoxon sign-rank) similar results are not displayed. Bold P-values denote significance.
HOMA-IR = homeostatic model assessment for insulin resistance.