the cardio zone ranges from 70 to 84% of hr max , and the fat burn zone ranges from 50
to 69% of hr max . Sleep quality/hygiene measures mainly capture time spent in defined
phases of sleep. All the processed measures are listed in Table 1, collected or aggregated with a default daily periodicity, except the ones in gray-shaded rows which are
acquired in higher intra-daily temporal resolution, mostly once in every 15 min or up to
once in a minute, depending on the variable.
Table 1. List of variables measured by the used wearable devices, with descriptions and units of
measure (SI base units in square brackets where applicable, like [s]-seconds, or [m]-meters)
Measured variable
Description [unit]
still_calories
amount of calories burned while being still
total_calories
total amount of calories burned (default in a day)
walk_steps
number of walked steps
walk_distance
walked distance [m]
stairs_floor_changes_up
number of floors traversed in climbing stairs up
elevation
vertical distance [m] traversed in climbing stairs
still_time
time [s] spent being still
physicalactivity_soft_time
time [s] spent performing light/”soft” physical activities like relaxed
walking/strolling or standing up and moving around in the home,
workplace or community
physicalactivity_moderate_time time [s] spent performing moderate physical activities like swift walking,
dancing, gardening
physicalactivity_intense_time
time [s] spent performing intense/vigorous physical activities like
running, fast cycling or swimming, tennis, jumping rope
physicalactivity_calories
amount of calories burned while performing physical activities
heartrate_cardio_time
time [s] duration of the heart rate being within the defined “cardio” target
range
heartrate_peak_time
time [s] duration of the heart rate being within the defined “peak” target
range
heartrate_resting
resting heart rate
heartrate_avg
average heart rate
heartrate_max
maximal heart rate
sleep_time
total time [s] spent in all phases of sleep
sleep_efficiency
calculated score derived from sleep_time, sleep_asleep_time and
sleep_wake_time
sleep_deep_count
number of times falling into deep sleep
sleep_deep_time
total time [s] spent in deep sleep
sleep_light_count
number of times falling into light sleep
sleep_light_time
total time [s] spent in light sleep
sleep_rem_count
number of times falling into REM sleep stage
sleep_rem_time
total time [s] spent in REM sleep stage
sleep_wake_count
number of times waking up
sleep_wake_time
total time [s] spent in waking up
sleep_awake_time
total time [s] spent awake during sleep
sleep_awake_count
number of times awakening during sleep
sleep_restless_time
total time [s] spent being restless during sleep
sleep_restless_count
number of times getting restless during sleep
sleep_asleep_time
total time [s] spent being fully asleep
sleep_asleep_count
number of times falling fully asleep
Baseline Modelling and Composite Representation
159
to 69% of hr max . Sleep quality/hygiene measures mainly capture time spent in defined
phases of sleep. All the processed measures are listed in Table 1, collected or aggregated with a default daily periodicity, except the ones in gray-shaded rows which are
acquired in higher intra-daily temporal resolution, mostly once in every 15 min or up to
once in a minute, depending on the variable.
Table 1. List of variables measured by the used wearable devices, with descriptions and units of
measure (SI base units in square brackets where applicable, like [s]-seconds, or [m]-meters)
Measured variable
Description [unit]
still_calories
amount of calories burned while being still
total_calories
total amount of calories burned (default in a day)
walk_steps
number of walked steps
walk_distance
walked distance [m]
stairs_floor_changes_up
number of floors traversed in climbing stairs up
elevation
vertical distance [m] traversed in climbing stairs
still_time
time [s] spent being still
physicalactivity_soft_time
time [s] spent performing light/”soft” physical activities like relaxed
walking/strolling or standing up and moving around in the home,
workplace or community
physicalactivity_moderate_time time [s] spent performing moderate physical activities like swift walking,
dancing, gardening
physicalactivity_intense_time
time [s] spent performing intense/vigorous physical activities like
running, fast cycling or swimming, tennis, jumping rope
physicalactivity_calories
amount of calories burned while performing physical activities
heartrate_cardio_time
time [s] duration of the heart rate being within the defined “cardio” target
range
heartrate_peak_time
time [s] duration of the heart rate being within the defined “peak” target
range
heartrate_resting
resting heart rate
heartrate_avg
average heart rate
heartrate_max
maximal heart rate
sleep_time
total time [s] spent in all phases of sleep
sleep_efficiency
calculated score derived from sleep_time, sleep_asleep_time and
sleep_wake_time
sleep_deep_count
number of times falling into deep sleep
sleep_deep_time
total time [s] spent in deep sleep
sleep_light_count
number of times falling into light sleep
sleep_light_time
total time [s] spent in light sleep
sleep_rem_count
number of times falling into REM sleep stage
sleep_rem_time
total time [s] spent in REM sleep stage
sleep_wake_count
number of times waking up
sleep_wake_time
total time [s] spent in waking up
sleep_awake_time
total time [s] spent awake during sleep
sleep_awake_count
number of times awakening during sleep
sleep_restless_time
total time [s] spent being restless during sleep
sleep_restless_count
number of times getting restless during sleep
sleep_asleep_time
total time [s] spent being fully asleep
sleep_asleep_count
number of times falling fully asleep
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159