Stepping bouts csv

The stepping bouts csv file provides a list of all continuous stepping bouts in the file, and their containing upright bouts. Non-upright bouts are also provided in the file for context.

Column headingDescription
TimeDate and time encoded as a floating point number, The integer part of number represents the date. The decimal portion represents the time.
(Full details at: http://support.microsoft.com/kb/210276)

To view the time in Excel, follow this these instructions
Time (approx)For convenience, the date and time accurate to the nearest second. This should not be used for
calculations of time diffferences.
Data CountCount in 0.1s resolution from the start of the recording
Event TypeThe event type:
0 – sedentary
1 – standing
2 – stepping

With the latest classification algorithm, additional event types are available:
2.1 – cycling
3.1 – primary lying
3.2 – secondary lying
4 – non-wear
5 – seated transport
DurationThe duration of the bout (in seconds)
Upright Bout NumberEach upright bout is labelled with a bout number for reference
Upright Bout Duration (s)The duration of the upright bout container of the stepping bout (in seconds)
Num StepsThe number of steps in the stepping bout
CadenceThe cadence of the stepping bout

In addition, aP4+ recordings provide the following outputs:

Column HeadingDescription
Longest Straight Line Time (s)The longest continuous section of straight line stepping in the stepping bout (in seconds)
Straight Line Time (s) (>=15s,<30s)The total time accumulated in the stepping bout of straight line stepping of between 15s and 30s
Straight Line Time (s) (>=30s,<45s)The total time accumulated in the stepping bout of straight line stepping of between 30s and 45s
Straight Line Time (s) (>=45s,<60s)The total time accumulated in the stepping bout of straight line stepping of between 45s and 60s
Straight Line Time (s) (>=60s)The total time accumulated in the stepping bout of straight line stepping of >=60s
Cumulative Positive Height Change (m)The cumulative positive per step height change in the stepping bout
Cumulative Negative Height Change (m)The cumulative negative per step height change in the stepping bout

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