Fig 2 -

The recording devices; (a) Chair fitted with load-cell sensors; (b) Alice PDx.</p

R-peaks estimation using CNN vs R-peaks from ECG signal.

R-peaks estimation using CNN vs R-peaks from ECG signal.</p

Fig 7 -

Comparison of HRV obtained from conventional algorithm and proposed method; (a) HRV obtained from conventional algorithm [21]; (b) HRV obtained from proposed method.</p

The wheatstone bridge arrangement of load-cell sensor.

The wheatstone bridge arrangement of load-cell sensor.</p

An example of detection of R-peaks directly after the exercise period; The orange boxes note indicate failures in peak detection.

An example of detection of R-peaks directly after the exercise period; The orange boxes note indicate failures in peak detection.</p

Analysis flowchart.

Validation is based on the output RRI.</p

Accurate detection of R peaks from subject with abnormal ECG waves.

The occurrences of irregular heartbeats are shown with orange background.</p

Sample BCG and ECG signals showing the correspondence between R-peaks and J-peak.

Sample BCG and ECG signals showing the correspondence between R-peaks and J-peak.</p

Model of heartbeat mechanism and changes in force [7].

Model of heartbeat mechanism and changes in force [7].</p

Results of paired t-test for the duration of each sleep-wake state before and after DXM administration for the data in Fig 2C.

Results of paired t-test for the duration of each sleep-wake state before and after DXM administration for the data in Fig 2C.</p