Table 2.

Changes in secondary outcomes related to physical activity for at least 1 valid day of accelerometer wear at follow-up

Physical activity-related secondary outcomeParticipants, nMean change from baselineAdjusted difference at follow-upa
Control, n= 173Intervention, n= 180ControlInterventionCoefficient (95% CI)P-value
Overall daily physical activity, mg
  6 months140128−0.38−0.360.12 (−0.80 to 1.04)0.793
Average acceleration for most active continuous 30 min, mg
  6 months140128−1.17−1.681.07 (−3.07 to 5.21)0.611
  12 months1371281.11−4.17−3.71 (−7.97 to 0.54)0.087
Minutes per day spent in moderate-to-vigorous 1-min bouts of physical activity (min/day)
  6 months140128−1.760.011.88 (−1.53 to 5.28)0.279
  12 months1371280.54−3.72−3.86 (−6.70 to −1.03)0.008
Minutes per day spent in slow walk, classified as>100 mg (min/day)
  6 months140128−2.29−1.041.70 (−3.46 to 6.86)0.518
  12 months137128−1.09−6.23−4.66 (−8.82 to −0.51)0.028
Minutes per day spent in brisk walk, classified as>200 mg (min/day)
  6 months1401280.060.0010.23 (−1.44 to 1.90)0.789
  12 months1371280.10−1.40−1.23 (−2.81 to 0.35)0.127
Minutes per day spent sedentary/inactive (min)
  6 months1351211.132.71−1.78 (−19.33 to 15.77)0.842
  12 months136124−10.155.229.91 (−11.78 to 31.60)0.369
Minutes’ sleep duration per night (min)
  6 months135121−2.20−2.800.69 (−10.49 to 11.86)0.904
  12 months1361245.632.43−1.33 (−16.98 to 14.32)0.867
  • a Adjusted for stratification factors: sex, ethnicity; change from baseline in accelerometer wear time and baseline value of outcome. Participants with missing outcome data or missing variables required for the model adjustment were excluded. CI = confidence interval.