Estimate HF-HRV

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SCENARIO: ALEX or LOGAN wants to be able to obtain estimates of high-frequency heart rate variability (i.e., variability within the frequency range of respiration).

GIVEN: ALEX or LOGAN have completely edited a file

WHEN: They hit save and close

THEN: Estimates of high frequency heart rate variability (both raw and log-transformed) should be included in the relevant output files

NOTES:

1. Successful completion will require the inclusion of a field marking the age of the individual