Table 3. Effect of intervention on physical activity, dietary intake and weight. Values represent means (SD).
| Outcome | MD-C/Pt-C | MD-I/Pt-C | MD-C/Pt-I | MD-I/Pt-I | p-value: MD-I main effect |
p-value: Pt-I main effect |
|---|---|---|---|---|---|---|
| Physical activity by accelerometry (Moderate-vigorous physical activity, minutes/week) | ||||||
| Baseline | 43.9 (122.5) | 36.4 (127.1) | 37.9 (89.1) | 28.8 (106.7) | ||
| Change (6-month) | −15.7 (122.0) | 18.5 (297.8) | 6.2 (103.2) | 28.4 (134.9) | .15 | .49 |
| Change (18-month) | −13.0 (145.7) | 5.0 (95.1) | −21.5 (138.8) | −0.7 (112.3) | .07 | .10 |
| Dietary pattern | ||||||
| F/V, servings/d | ||||||
| Baseline | 1.28 (.90) | 1.23 (.88) | 1.33 (.99) | 1.42 (1.13) | ||
| Change (6-month) | 0.04 (.81) | 0.09 (.72) | 0.59 (1.27) | 0.92 (1.34) | .02 | <.0001 |
| Change (18-month) | 0.01 (0.90) | −0.03 (0.87) | 0.41 (1.13) | 0.55 (1.13) | .53 | <.0001 |
| Dairy, servings/d | ||||||
| Baseline | 0.94 (.90) | 0.89 (.89) | 0.94 (.89) | 0.95 (.81) | ||
| Change (6-month) | −0.01 (.72) | 0.01 (.56) | 0.06 (.67) | 0.21 (.75) | .17 | .01 |
| Change (18-month) | −0.03 (0.80) | −0.00 (0.61) | 0.08 (0.51) | −0.01 (0.79) | .57 | .56 |
| Total fat, % Kcal | ||||||
| Baseline | 38.1 (8.0) | 39.8 (8.3) | 38.4 (8.1) | 37.3 (6.8) | ||
| Change (6-month) | 0.6 (7.0) | −1.2 (6.7) | −2.3 (8.5) | −4.3 (7.1) | .002 | <.0001 |
| Change (18-month) | 0.8 (8.0) | −1.1 (6.6) | −1.7 (7.7) | −2.8 (7.8) | .02 | <.0001 |
| Saturated fat, % Kcal | ||||||
| Baseline | 10.6 (2.5) | 11.0 (2.3) | 10.9 (2.7) | 10.5 (2.4) | ||
| Change (6-month) | 0.2 (2.3) | −0.2 (2.0) | −1.0 (2.7) | −1.3 (2.1) | .07 | <.0001 |
| Change (18-month) | 0.1 (2.3) | −0.2 (2.0) | −0.9 (2.1) | −1.0 (2.2) | .28 | <.0001 |
| Urinary Sodium, mmol/24 hrs | ||||||
| Baseline | 174.7 (77.0) | 175.2 (82.9) | 150.9 (68.0) | 170.3 (76.2) | ||
| Change (6-month) | −22.8 (71.2) | −23.6 (75.2) | −13.1 (62.2) | −31.4 (79.7) | .62 | .14 |
| Change (18-month) | −8.3 (84.1) | −1.4 (69.9) | −24.0 (85.2) | −28.0 (76.6) | .03 | .32 |
| Weight, lb | ||||||
| Baseline | 202.1 (39.6) | 199.0 (38.4) | 192.3 (38.0) | 202.5 (37.5) | ||
| Change (6-month) | −0.3 (6.3) | 0.1 (11.2) | −5.2 (10.7) | −7.0 (10.7) | .44 | <.0001 |
| Change (18-month) | −2.1 (12.0) | −0.4 (13.4) | −2.6 (12.2) | −3.8 (9.8) | .83 | .06 |
N in each category ranged from 74% (urine) to 91% (weight) of randomized participants at 6 months and from 71% (urine) to 89% (weight) at 18 months.