PAactivPAL (version 2.0)

SLI: Standing/Light Intensity Physical Activity Summary

Description

Summarize standing and light intensity activity measures

Usage

SLI(final_dat, bed_time, takeoff_time)

Arguments

final_dat

Raw event file, will be cleaned in this function. Event file is required for this function.

bed_time

Sleep and wake up time log, reported by participants. Log is not required for this function.

takeoff_time

Take on and off time log, reported by participants. Log is not required for this function.

Value

Year The calendar year of recorded eventMonth The calendar month of recorded eventDay The calendar day of recorded eventDayofweek The day of that weekWeekday_or_weekend The recored event date is a weekday or weekend (0 for weekday, 1 for weekend)total_number_of_activity_bouts Total events that are standing or steppingtotal_number_of_activity_bouts Total number of events that are standing or steppingmean_activity_bout_length Average length of activity boutprop_of_activity_time_greater_5min The ratio of the number of active bouts greater than 5 min to the total number of active eventsprop_of_activity_time_greater_10min The ratio of the number of active bouts greater than 10 min to the total number of active events.prop_of_activity_time_greater_30min The ratio of the number of active bouts greater than 30 min to the total number of active events.total_activity_time_greater_5min The summation of the active durations which are greater than 5 mintotal_activity_time_greater_10min The summation of the active durations which are greater than 10 mintotal_activity_time_greater_30min The summation of the active durations which are greater than 30 minpercentile_activity_time_5 5% percentile of activity bouth lengthpercentile_activity_time_25 25% percentile of activity bout lengthpercentile_activity_time_50 50% percentile of activity bout lengthpercentile_activity_time_75 75% percentile of activity bout lengthpercentile_activity_time_95 95% percentile of activity bout lengthalpha_activity alpha of activity time, see detailsstepping_to_standing_ratio Ratio of stepping to standing, the ratio of total stepping hours to standing hours

Details

alpha_activity is defined by 1+1/M, where M is the average of log(activity bout length /minimum activity bout length)

Examples

#For CRAN less than 5s running time policy, we only select the first day to run.
r4=SLI(sample_event[1:3095,],sample_bed_time[1,],sample_takeon_log[1,])
summary(r4)