| M10: mean diurnal motor activity (counts/min) |
daily average of the 10 most active consecutive hours over 5 days [43–45] |
| L5: mean nocturnal motor activity (counts/min) |
daily average of the 5 less active consecutive hours over 5 days [43–45] |
| RA: motor activity (day minus night, normalised) |
RA = (M10-L5)/(M10+L5). RA values range from 0 to 1, and higher values indicate higher activity during the day relative tonight [45] |
| P10: phase of M10 onset (hh:min) |
corresponds to the onset of the M10 phase, i.e., the onset of the 10 most active consecutive hours of motor activity |
| P5: phase of L5 onset (hh:min) |
corresponds to the onset of L5 phase, i.e., the onset of the 5 less active consecutive hours of motor activity |
| IS: interdaily stability |
corresponds to the circadian rhythm stability of motor activity over 5 days; a high IS value indicates a more synchronized rest/activity rhythm [46] |
| IV: intradaily variability |
corresponds to the circadian rhythm fragmentation of motor activity; a high IV value indicates a more fragmented rest/activity rhythm (for example, occurrence of daytime naps and/or episodes of night time activity) [46] |
| M16_light: mean diurnal light exposure (lux) |
daily average of the 16 consecutive hours with more exposure to light over 5 days |
| L8_light: mean nocturnal light exposure (lux) |
daily average of the 8 consecutive hours with less light exposure over 5 days |
| RA_light: light exposure (day minus night, normalised) |
RA_light = (M16_light—L8_light)/(M16_light + L8_light)). RA_light values range from 0 to 1, and higher values indicate higher light exposure during the day relative to light exposure at night [45] |
