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Table 5 Changes in anthropometric and metabolic indicators and MVPA duration in intervention and control groups

From: Effectiveness of a school-based physical activity intervention on obesity in school children: a nonrandomized controlled trial

Measure   Intervention group   Control group Adjusted difference, mean (95% CI)a P value
  N Baseline mean (SD) Follow-up mean (SD) Mean (SE) change N Baseline mean (SD) Follow-up mean (SD) Mean (SE) change   
Waist circumference, cm 386 65.68 (12.62) 64.61 (11.69) −1.06 (0.17) 532 69.58 (12.58) 68.84 (12.25) −0.70 (0.14) −0.38 (−0.81 to 0.05) 0.393
Skinfold thickness, mm
Triceps skinfold 388 14.45 (7.28) 14.21 (7.06) −0.24 (0.18) 532 15.55 (6.82) 16.68 (7.89) 1.15 (0.16) −1.40 (−1.87 to −0.93) <0.001
Subscapular skinfold 388 11.94 (8.13) 11.77 (7.89) −0.18 (0.23) 532 13.34 (7.61) 14.40 (9.55) 1.08 (0.19) −1.26 (−1.84 to −0.67) <0.001
Abdominal skinfold 388 15.84 (12.34) 14.64 (11.80) −1.22 (0.22) 532 18.64 (11.26) 18.09 (12.36) −0.54 (0.20) −0.69 (−1.29 to −0.10) 0.023
Serum lipids, mmol/L
Total cholesterol 384 4.02 (0.68) 3.90 (0.65) −0.12 (0.02) 530 3.88 (0.68) 3.80 (0.64) −0.08 (0.02) −0.05 (−0.11 to 0.02) 0.143
Triglycerides 384 0.85 (0.40) 0.93 (0.42) 0.09 (0.02) 530 0.79 (0.42) 0.88 (0.46) 0.10 (0.02) −0.01 (−0.06 to 0.03) 0.599
HDL-C 384 1.46 (0.29) 1.44 (0.30) −0.02 (0.01) 530 1.40 (0.28) 1.36 (0.28) −0.04 (0.01) 0.02 (−0.003 to 0.05) 0.085
LDL-C 384 2.34 (0.58) 2.28 (0.54) −0.07 (0.02) 530 2.41 (0.62) 2.34 (0.56) −0.07 (0.02) 0.003 (−0.04 to 0.05) 0.910
Fasting glucose, mmol/L 384 4.99 (0.46) 4.97 (0.44) −0.03 (0.02) 530 4.65 (0.45) 4.81 (0.41) 0.17 (0.02) −0.19 (−0.24 to −0.15) <0.001
Duration of MVPA, min/day 334 44.7 (45.7) 53.5 (66.2) 8.9 (4.3) 483 46.6 (60.7) 32.8 (47.3) −13.8 (3.3) 22.7 (12.2 to 33.2) <0.001
In school 334 27.4 (26.0) 34.3 (46.1) 6.8 (2.9) 483 30.1 (40.3) 18.9 (28.3) −11.2 (2.1) 18.1 (11.2 to 25.0) <0.001
Out of school 334 17.2 (28.6) 19.3 (35.0) 2.0 (2.4) 483 16.4 (31.1) 13.9 (26.9) −2.6 (1.8) 4.6 (−1.0 to 10.2) 0.117
  1. aAdjusted differencewas calculated using multilevel models adjusted for sex and age.
  2. HDL-C: high density lipoprotein cholesterol. LDL-C: low density lipoprotein cholesterol. MVPA: moderate to vigorous physical activity.