| Behavioural measures . | Definitions . |
|---|---|
| Activity | |
| Active eventa (count) | Active event number per 24 h. |
| Inactive duration (hours) | Total duration spent inactive [<40 mg average acceleration (g, units of gravity acceleration)] per 24 h, excluding sleep. |
| MVPA duration (hours) | Total duration spent in moderate- and vigorous physical activity per 24 h (>644 mg of acceleration magnitude, e.g. moderate paced walking or leisure activities like light bicycling). |
| M6 intensity (mg) | Intensity of the most active 6 min in 24 h (g, units of gravity acceleration). |
| Average cadence (steps/day) | The mean walking cadence (steps/minute) per 24 h. |
| Peak cadence (steps/day) | The 95th percentile of walking cadence per 24 h, i.e. the walking speed when walking purposefully. |
| Activity volume (mg·s) | Activity volume = sum of durations × mean acceleration for each event (g·s, units of gravity acceleration seconds) per 24 h. |
| Sleep | |
| Total sleep duration (hours) | Total sleep duration within rest interval. |
| Sleep efficiency (%) | Percentage of sleep within rest interval. |
| WASO count | Wake after sleep onset—number of inactive and active events (>10 s length) of non-sleep taking place during the sleep interval. |
| Number of sleep events (count) | Discrete sleep events and postures within rest interval. |
| Behavioural measures . | Definitions . |
|---|---|
| Activity | |
| Active eventa (count) | Active event number per 24 h. |
| Inactive duration (hours) | Total duration spent inactive [<40 mg average acceleration (g, units of gravity acceleration)] per 24 h, excluding sleep. |
| MVPA duration (hours) | Total duration spent in moderate- and vigorous physical activity per 24 h (>644 mg of acceleration magnitude, e.g. moderate paced walking or leisure activities like light bicycling). |
| M6 intensity (mg) | Intensity of the most active 6 min in 24 h (g, units of gravity acceleration). |
| Average cadence (steps/day) | The mean walking cadence (steps/minute) per 24 h. |
| Peak cadence (steps/day) | The 95th percentile of walking cadence per 24 h, i.e. the walking speed when walking purposefully. |
| Activity volume (mg·s) | Activity volume = sum of durations × mean acceleration for each event (g·s, units of gravity acceleration seconds) per 24 h. |
| Sleep | |
| Total sleep duration (hours) | Total sleep duration within rest interval. |
| Sleep efficiency (%) | Percentage of sleep within rest interval. |
| WASO count | Wake after sleep onset—number of inactive and active events (>10 s length) of non-sleep taking place during the sleep interval. |
| Number of sleep events (count) | Discrete sleep events and postures within rest interval. |
aEvents are durations of ≥10 s of homogeneous acceleration.
| Behavioural measures . | Definitions . |
|---|---|
| Activity | |
| Active eventa (count) | Active event number per 24 h. |
| Inactive duration (hours) | Total duration spent inactive [<40 mg average acceleration (g, units of gravity acceleration)] per 24 h, excluding sleep. |
| MVPA duration (hours) | Total duration spent in moderate- and vigorous physical activity per 24 h (>644 mg of acceleration magnitude, e.g. moderate paced walking or leisure activities like light bicycling). |
| M6 intensity (mg) | Intensity of the most active 6 min in 24 h (g, units of gravity acceleration). |
| Average cadence (steps/day) | The mean walking cadence (steps/minute) per 24 h. |
| Peak cadence (steps/day) | The 95th percentile of walking cadence per 24 h, i.e. the walking speed when walking purposefully. |
| Activity volume (mg·s) | Activity volume = sum of durations × mean acceleration for each event (g·s, units of gravity acceleration seconds) per 24 h. |
| Sleep | |
| Total sleep duration (hours) | Total sleep duration within rest interval. |
| Sleep efficiency (%) | Percentage of sleep within rest interval. |
| WASO count | Wake after sleep onset—number of inactive and active events (>10 s length) of non-sleep taking place during the sleep interval. |
| Number of sleep events (count) | Discrete sleep events and postures within rest interval. |
| Behavioural measures . | Definitions . |
|---|---|
| Activity | |
| Active eventa (count) | Active event number per 24 h. |
| Inactive duration (hours) | Total duration spent inactive [<40 mg average acceleration (g, units of gravity acceleration)] per 24 h, excluding sleep. |
| MVPA duration (hours) | Total duration spent in moderate- and vigorous physical activity per 24 h (>644 mg of acceleration magnitude, e.g. moderate paced walking or leisure activities like light bicycling). |
| M6 intensity (mg) | Intensity of the most active 6 min in 24 h (g, units of gravity acceleration). |
| Average cadence (steps/day) | The mean walking cadence (steps/minute) per 24 h. |
| Peak cadence (steps/day) | The 95th percentile of walking cadence per 24 h, i.e. the walking speed when walking purposefully. |
| Activity volume (mg·s) | Activity volume = sum of durations × mean acceleration for each event (g·s, units of gravity acceleration seconds) per 24 h. |
| Sleep | |
| Total sleep duration (hours) | Total sleep duration within rest interval. |
| Sleep efficiency (%) | Percentage of sleep within rest interval. |
| WASO count | Wake after sleep onset—number of inactive and active events (>10 s length) of non-sleep taking place during the sleep interval. |
| Number of sleep events (count) | Discrete sleep events and postures within rest interval. |
aEvents are durations of ≥10 s of homogeneous acceleration.
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