Table 5 Total change over time from the fitted mixed effects models for each Fitbit parameter
Before intervention (T-1-T0) 35 days | During intervention (T0-T2) 179 days | ||||||
|---|---|---|---|---|---|---|---|
Domain | Variable name | Est | [95% CI] | Est | [95% CI] | ||
Heart rate | RHR (bpm) | -1.4 | [-3.1 – 0.3] | 0.9 | [-0.6 – 2.4] | ||
Physical activity | Step count (steps/day) | 1667 | [0 – 3511] | *** | -465 | [-1016 – 107] | |
Sedentary time (hours/day) | -0.3 | [-0.9 – 0.2] | -0.2 | [-0.7 – 0.3] | |||
LPA (min/week) | 62.8 | [0.0– 126.9] | -78.2 | [-152.9 – -1.6] | * | ||
MPA (min/week) | 38.6 | [0.0 – 84.9] | * | -28.6 | [-40.4 – -16.1] | *** | |
VPA (min/week) | 65.6 | [0.0 – 156] | * | -22.0 | [-38.2 – -4.2] | * | |
Sleep | Sleep time (min/day) | 1.4 | [-19.5 – 22.3] | -15.2 | [-47.9 – 17.6] | ||
Sleep efficiency (%/day) | -0.1 | [-0.1– 0.0] | -0.2 | [-0.5– 0.1] | |||
Self-monitoring behaviour | Weigh-ins (days/week) | 0.9 | [-0.0 – 1.9] | -2.0 | [-2.8 – -1.2] | *** | |
Tracker days (days/week) | 0.8 | [0.1 – 1.5] | * | -0.7 | [-1.0 – -0.5] | *** | |
Activity registrations (number/week) | 1.6 | [0.1 – 3.0] | * | -0.7 | [-1.8 – 0.4] | ||