Table 1.
Weight, physical activity, and diet at baseline and annual changes from baseline among participants in the ILS group: DPP, 1996–2001
| Baseline
|
Year 1
|
Year 2
|
Year 3
|
|
|---|---|---|---|---|
| Mean (25th–75th percentile)* | Mean change (25th–75th percentile)* | Mean change (25th–75th percentile)* | Mean change (25th–75th percentile)* | |
| Weight | ||||
| n | 1,079 | 1,023 | 999 | 638 |
| Weight (kg) | 94.1 (79.2–105.1) | −6.8 (−10.0 to −2.6)† | −5.4 (−8.5 to −1.10) † | −4.1 (−7.3 to 0.0) † |
| BMI (kg/m2) | 33.9 (28.9–37.2) | −2.4 (−3.5 to −1.0) † | −1.9 (−3.0 to −0.4) † | −1.5 (−2.7 to 0.0) † |
| Percent weight loss | — | 7.2 (3.0–10.5) † | 5.8 (1.2–9.8) † | 4.5 (0–8.5) † |
| Energy expenditure | ||||
| n | 1,077 | 1,013 | 995 | 635 |
| Modifiable Activity Questionnaire (MET hours/week)‡ | 15.5 (3.8–19.3) | +6.6 (−0.1 to +14.4) † | +5.7 (−0.7 to +13.9) † | +4.3 (−2.3 to +13.1) † |
| Low Level Physical Activity Recall (MET hours/week)§ | 67.1 (36.3–91.1) | +8.3 (−15.1 to +30.9) † | +8.0 (−17.0 to +33.9) † | +8.1 (−19.3 to +35.2) † |
| Energy intake|| | ||||
| n | 1,054 | 987 | — | — |
| Total kcal/day | 2,137 (1,452–2,550) | −452.3 (−803.3 to +29.0) † | — | — |
| Total fat/day (g) | 83.0 (49.3–102.5) | −30.3 (−47.6 to −6.3) † | — | — |
| Percent of calories from fat | 34.1 (29.6–38.5) | −6.6 (−10.9 to −1.9) † | — | — |
*
Twenty-fifth to 75th percentile of change in variable.
†
P < 0.0001 compared with baseline value by paired t test.
‡
One-year recall using Modifiable Activity Questionnaire (see Research Design and Methods).
§
Seven-day recall using Low Level Physical Activity Recall (see Research Design and Methods).
||
Diet information was not collected after year 1 (see Research Design and Methods).