Table 4 Cardiovascular Amplitude and Metric Offset Values for Naturally Cycling and Birth Control Cohorts

From: A Novel method for quantifying fluctuations in wearable derived daily cardiovascular parameters across the menstrual cycle

Ā 

RHR

RMSSD

Mean (Ā±s.d.)

Naturally cycling

Birth control pills

Naturally cycling

Birth control pills

Metric offset days 2ā€“5

āˆ’ 1.36ā€‰bpm (Ā±1.07)*

0.03ā€‰bpm (Ā±1.12)*

2.47ā€‰ms (Ā±3.84)*

āˆ’ 0.69ā€‰ms (Ā±3.97)*

Metric offset final 7 days

1.37ā€‰bpm (Ā±1.09)*

0.31ā€‰bpm (Ā±1.04)*

āˆ’ 2.18ā€‰ms (Ā±3.78)*

āˆ’ 0.18ā€‰ms (Ā±3.55)*

Cardiovascular amplitude

2.3ā€‰bpm (Ā±1.95)*

0.28ā€‰bpm (Ā±1.94)*

4.65ā€‰ms (Ā±6.90)*

āˆ’ 0.51ā€‰ms (Ā±6.7)*

  1. *pā€‰<ā€‰0.001.
  2. Mean values (Ā±s.d) for the offset of the underlying metric of RHR and RMSSD for days two through five of the menstrual cycle, the final seven days of the menstrual cycle, and the difference between the two (cardiovascular amplitude) for both Naturally Cycling and Birth Control cohorts. Values are compared for statistical significance in the difference between the Naturally Cycling and Birth Control Cohorts using a two-sample t-test.
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