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Comparison of speckle plethysmography (SPG) and photoplethysmography (PPG) with regard to pulse waveform, heart rate, and heart rate variability (1) at rest, (2) with upper-arm occlusion, and (3) during exercise on a bicycle ergometer

Comparison of speckle plethysmography (SPG) and photoplethysmography (PPG) with regard to pulse waveform, heart rate, and heart rate variability (1) at rest, (2) with upper-arm occlusion, and (3) during exercise on a bicycle ergometer

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00041001
Enrollment
30
Registered
2026-07-15
Start date
2026-07-27
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Some PPG systems provide inaccurate measurements of HRV and the underlying heart rate waveform.

Interventions

Group 1: Arm 1: Observational Cohort – Simultaneous Measurement Prospective study of healthy subjects. For all participants, the pulse and ECG signal are recorded noninvasively using SPG, PPG, and ECG

Sponsors

Technische Universität München
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Healthy participants

Exclusion criteria

Exclusion criteria: - Cardiovascular diseases - Acute systemic infections - Existing health conditions (e.g., vascular diseases)

Design outcomes

Primary

MeasureTime frame
Evaluation of the morphological agreement between the pulsatile signals recorded using SPG and PPG and the reference blood pressure curve (Finapres), as well as the temporal agreement of the RR intervals detected from PPG and SPG relative to the ECG.—

Countries

Germany

Contacts

Public ContactChristian Fritzsche

Technische Universität München

christian.fritzsche@tum.de+49 89 289 153 67

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Aug 10, 2026