Table 1.
Study participants
| Intervention Mean (SD) | Control Mean (SD) | Treatment difference at 24 weeks (Intervention - Control) | ||||
|---|---|---|---|---|---|---|
| Baseline (n = 127) | 24 weeks (n = 117) | Baseline (n = 124) | 24 weeks (n = 113) | Estimate (95% confidence interval) | P-value | |
| Demographics | ||||||
| Age (years) | 11.2 | 11.3 | ||||
| Gender: | ||||||
| Male | 72 (57%) | 70 (56%) | ||||
| Female | 55 (43%) | 54 (44%) | ||||
| Ethnicity: | ||||||
| Māori | 16 (13%) | 13 (11%) | ||||
| Pacific | 67 (53%) | 66 (53%) | ||||
| NZ/European | 44 (34%) | 44 (35%) | ||||
| Refused to answer | 0 | 1 (1%) | ||||
| Total household income (before tax) | ||||||
| Under $20,000 | 14 (11%) | 22 (18%) | ||||
| $20,001-$30,000 | 14 (11%) | 21 (17%) | ||||
| $30,001-$40,000 | 19 (15%) | 17 (14%) | ||||
| $40,001-$50,000 | 18 (14%) | 14 (11%) | ||||
| $50,001-$60,000 | 5 (4%) | 9 (7%) | ||||
| $60,001-$70,000 | 11 (9%) | 4 (3%) | ||||
| $70,001-$80,000 | 9 (7%) | 7 (6%) | ||||
| $80,001-$90,000 | 6 (5%) | 6 (5%) | ||||
| Over $90,000 | 19 (15%) | 12 (10%) | ||||
| Don’t know | 9 (7%) | 12 (10%) | ||||
| Refused to answer | 3 (3%) | 0 (0%) | ||||
| Anthropometrics | ||||||
| zBMI score | 2.57 (0.8) | 2.58 (0.86) | 2.52 (0.93) | 2.56 (0.94) | −0.01 (−0.08, 0.05) | 0.67 |
| BMI (kg/m2) | 26.51 (4.50) | 26.63 (4.69) | 26.62 (5.30) | 26.75 (5.19) | −0.01 (−0.36, 0.35) | 0.97 |
| Height (m) | 1.53 (0.10) | 1.57 (0.10) | 1.54 (0.10) | 1.57 (0.10) | ||
| Weight (kg) | 63.21 (15.92) | 66.01 (16.64) | 63.98 (18.50) | 66.57 (18.36) | ||
| Waist circumference (cm) | 87.45 (14.39) | 89.06 (13.30) | 87.89 (14.79) | 89.12 (13.75) | −0.09 (−1.95, 1.77) | 0.93 |
| FFM (kg) | 42.01 (9.23) | 44.08 (8.94) | 42.48 (10.11) | 44.54 (0.47) | 0.24 (−0.63, 1.11) | 0.59 |
| FM (kg) | 21.20 (8.01) | 21.85 (9.31) | 21.05 (10.11) | 21.24 (9.21) | 0.08 (−0.97, 1.14) | 0.88 |
| Percentage body fat (%) | 32.78 (6.06) | 32.14 (6.76) | 31.93 (9.92) | 31.41 (6.93) | −0.05 (−1.38, 1.27) | 0.94 |
| Sedentary behaviours | Baseline (n = 127) | 24 weeks (n = 110) | Baseline (n = 124) | 24 weeks (n = 105) | ||
| Total sedentary time (min/day) | 550 (136) | 520 (130) | 561 (136) | 542 (140) | −20 (−56, 17) | 0.29 |
| Screen-based sedentary time (min/day) | 250 (162) | 120 (147) | 244 (145) | 235 (156) | −33 (−73, 7) | 0.11 |
| Non screen-based sedentary time (min/day) | 299 (137) | 321 (133) | 317 (137) | 307 (150) | 13 (−26, 51) | 0.51 |
| Enjoyment of sedentary behaviour | 3.69 (0.62) | 3.61 (0.54) | 3.80 (0.55) | 3.78 (0.64) | −0.12 (−0.26, 0.02) | 0.09 |
| Physical activities | Baseline (n = 127) | 24 weeks (n = 110) | Baseline (n = 124) | 24 weeks (n = 105) | ||
| PA level (MET/day) | 1.58 (0.26) | 1.59 (0.25) | 1.64 (0.34) | 1.60 (0.32) | 0.01 (−0.07, 0.09) | 0.82 |
| LPA (min/day) | 109 (59) | 129 (81) | 114 (72) | 138 (89) | −9 (−33, 14) | 0.43 |
| MPA (min/day) | 113 (96) | 113 (94) | 111 (104) | 89 (94) | 24 (−1, 50) | 0.06 |
| VPA (min/day) | 31(45) | 32 (48) | 44 (62) | 37 (52) | −1 (−15, 12) | 0.84 |
| MVPA (min/day) | 144 (100) | 145 (100) | 155 (110) | 127 (109) | 22 (−6, 51) | 0.13 |
| Locomotion | 164 (103) | 174 (101) | 174 (119) | 165 (108) | 9 (−20, 38) | 0.54 |
| Sleep (min/day) | 640 (85) | 645 (95) | 619 (85) | 633 (99) | 8 (−19, 34) | 0.57 |
| Enjoyment of physical activity | 4.13 (0.52) | 4.18 (0.57) | 4.21 (0.58) | 4.24 (0.59) | 0 (−0.1, 0.1) | 0.82 |
LPA: light physical activity; MVPA: moderate-to-vigorous intensity physical activity; SD: standard deviation; VPA: vigorous physical activity. Linear regression models for intervention difference adjusting for: baseline outcome value, age (in years), sex, most identified ethnicity.
Household income is in NZ$: As of June 2014, $NZ1 = $US0.85.