Respiratory Rate · desk opened AUG 1 2026 · revision 2
Reviewed OCT 15 2026
Respiratory Rate: What Holds Up and What Doesn't
Breathing rate is one of the least validated numbers a wearable reports. None of these three claims reaches settled, and one is not supported at all.
3 questions rated against 55 screened studies. Each rating is the evidence on that one question, not an average of the desk.
respiratory rate hub →Where the evidence stands · 3 questions rated the number beside each is how many studies sit behind it
Uncertain
2 questions
Unsupported
1 question
Do wearables measure respiratory rate accurately?
§Rated proposition Consumer-grade wearable devices measure respiratory rate with accuracy comparable to clinical reference methods.
What the studies found Wearable breathing-rate sensors agree closely with clinical reference methods at rest. Contactless camera measurement is rated separately and is not settled.
- Systematic-review or meta-analytic evidence affirms the core relationship.
- Multiple supporting studies are consistent with the core relationship.
- A clean anchor supports this claim, but an unresolved conflicting study contradicts it on the core relationship, so the evidence is treated as in genuine dispute.
- Some evidence conflicts on secondary points that do not change the core direction.
Used in 5 articles
- Does Wrist vs Chest Placement Affect Respiratory Rate Accuracy?10 shared studies
- Why Camera-Based Breathing Rate Accuracy Is Still Unsettled7 shared studies
- Watch Breathing Rate Lacks Validation During Exercise7 shared studies
- Wearable Breathing Rate Misses by 1 Breath on Average6 shared studies
- Wearable Monitors Have Not Shown Earlier Warning of Decline2 shared studies
54 studies scored · 2 anchor · 46 supporting · 3 conflicting · 3 commentary (not counted) · Evidence last evaluated Oct 15, 2026
Can a wearable warn that someone is deteriorating?
§Rated proposition Continuous wearable vital-sign monitoring detects patient deterioration earlier than intermittent checks.
What the studies found Continuous wearable monitoring did not catch deterioration earlier in hospital. It missed all four ICU admissions, and two intensive-care physicians reading the same sensor data agreed 10 percent of the time.
- Null-result evidence bears directly on the claimed effect.
Used in 1 article
1 studies scored · 1 null-result · Evidence last evaluated Oct 15, 2026
Can a camera measure your breathing rate accurately?
§Rated proposition A consumer-grade contactless camera measures respiratory rate accurately.
What the studies found Contactless cameras read heart rate well. Respiratory rate is a different problem, and the reviews that looked at it report research gaps rather than accuracy.
- An anchor study was assessed but its own reported finding supports this claim only weakly, so the evidence is treated as unsettled rather than affirming.
Used in 2 articles
- Why Camera-Based Breathing Rate Accuracy Is Still Unsettled2 shared studies
- Wearable Breathing Rate Misses by 1 Breath on Average1 shared study
2 studies scored · 1 anchor · 1 supporting · Evidence last evaluated Oct 15, 2026
MAINTAINED BY
The KnowYourPrime Research Desk · reviewed against new evidence on a rolling basis
Evidence on: Consumer-grade wearable devices measure respiratory rate with accuracy comparable to clinical reference methods.
54 scored
Anchor Studies2
Novel wearable and contactless heart rate, respiratory rate, and oxygen saturation monitoring devices: a systematic review and meta-analysis.
Journal
Anaesthesia · 2022
PMID
35947876
RCR
3.9
Citations
32
Study type
Meta-analysis
heart ratehumans
Clinical validation of a wearable respiratory rate device: A brief report.
Journal
Chronic respiratory disease · 2023
PMID
37612250
RCR
1.8
Citations
7
Study type
Observational study
Sample size
19 patients
humansbody mass index
Supporting Studies46
Effectiveness of consumer-grade contactless vital signs monitors: a systematic review and meta-analysis.
Journal
Journal of clinical monitoring and computing · 2022
PMID
34240262
RCR
2.9
Citations
22
Study type
Meta-analysis
Sample size
30 participants
adultheart rate
Clinical evaluation of a smart wristband for monitoring oxygen saturation, pulse rate, and respiratory rate.
Journal
Journal of clinical monitoring and computing · 2025
PMID
39388061
RCR
4.0
Citations
10
Study type
Observational study
Sample size
100 patients
adultaged
Reliable Contactless Monitoring of Heart Rate, Breathing Rate, and Breathing Disturbance During Sleep in Aging: Digital Health Technology Evaluation Study.
Journal
JMIR mHealth and uHealth · 2024
PMID
39190477
RCR
3.0
Citations
14
Study type
Primary study
Sample size
n = 21
humansaged
Reliability of Zephyr BioHarness Respiratory Rate at Rest, During the Modified Canadian Aerobic Fitness Test and Recovery.
Journal
Journal of strength and conditioning research · 2020
PMID
30694966
RCR
1.2
Citations
12
Study type
Primary study
Sample size
60 participants
adultexercise
Validating a Consumer Smartwatch for Nocturnal Respiratory Rate Measurements in Sleep Monitoring.
Journal
Sensors (Basel, Switzerland) · 2026
PMID
37766031
RCR
1.2
Citations
7
Study type
Primary study
Sample size
195 participants
humansmale
Agreement between standard and continuous wireless vital sign measurements after major abdominal surgery: a clinical comparison study.
Journal
Physiological measurement · 2022
PMID
36322987
RCR
1.7
Citations
12
Study type
Primary study
Sample size
20 patients
humansmonitoring, physiologic
Respiratory rate assessments using a dual-accelerometer device.
Journal
Respiratory physiology & neurobiology · 2014
PMID
24263211
RCR
1.7
Citations
30
Study type
Primary study
accelerometryadult
Monitoring respiratory rates with a wearable system using a stretchable strain sensor during moderate exercise.
Journal
Medical & biological engineering & computing · 2020
PMID
31734768
RCR
1.2
Citations
23
Study type
Primary study
adultexercise
Validation of Instantaneous Respiratory Rate Using Reflectance PPG from Different Body Positions.
Journal
Sensors (Basel, Switzerland) · 2019
PMID
30384462
RCR
1.2
Citations
15
Study type
Validity study
adultalgorithms
Morphic Sensors for Respiratory Parameters Estimation: Validation against Overnight Polysomnography.
Journal
Biosensors · 2023
PMID
37504102
RCR
0.5
Citations
3
Study type
Primary study
malefemale
Clinical validation of a novel accelerometer-based respiratory rate monitor.
Journal
Journal of clinical monitoring and computing · 2026
PMID
41649789
Citations
0
Study type
Validity study
humansrespiratory rate
Bluetooth low energy thermohygrometric sensor for continuous respiratory rate monitoring: 48 h breathing simulator and human proof-of-concept.
Journal
Biomedical physics & engineering express · 2026
PMID
41880662
Citations
0
Study type
Primary study
humansrespiratory rate
Seconds Matter: Rapid Non-Contact Monitoring of Heart and Respiratory Rate from Face Videos.
Journal
Sensors (Basel, Switzerland) · 2026
PMID
41829469
Citations
0
Study type
Primary study
Sample size
200 participants
humansheart rate
Feasibility of Monitoring Heart and Respiratory Rates Using Nonwearable Devices and Consistency of the Measured Parameters: Pilot Feasibility Study.
Journal
JMIR human factors · 2024
PMID
39378444
RCR
0.4
Citations
1
Study type
Primary study
Sample size
n = 21
humansfeasibility studies
A Guide to Measuring Heart and Respiratory Rates Based on Off-the-Shelf Photoplethysmographic Hardware and Open-Source Software.
Journal
Sensors (Basel, Switzerland) · 2024
PMID
38931550
RCR
0.5
Citations
2
Study type
Primary study
humansphotoplethysmography
Evaluation of Photoplethysmography-Based Monitoring of Respiration Rate During High-Intensity Interval Training: Implications for Healthcare Monitoring.
Journal
Biosensors · 2024
PMID
39727896
RCR
1.2
Citations
2
Study type
Primary study
Sample size
35 participants
humansphotoplethysmography
Accuracy of the Instantaneous Breathing and Heart Rates Estimated by Smartphone Inertial Units.
Journal
Sensors (Basel, Switzerland) · 2025
PMID
40006324
RCR
2.2
Citations
6
Study type
Primary study
humanssmartphone
Validity of a novel respiratory rate monitor comprising stretchable strain sensors during a 6-min walking test in patients with chronic pulmonary obstructive disease.
Journal
Respiratory medicine · 2022
PMID
34768076
RCR
0.2
Citations
2
Study type
Validity study
Sample size
50 patients
adultaged
Accuracy of Rhythm Diagnostic Systems' MultiSense ® in Detection of Arterial Oxygen Saturation and Respiratory Rate During Hypoxia in Humans: Effects of Skin Color and Device Localization.
Journal
Sensors (Basel, Switzerland) · 2025
PMID
39796917
RCR
0.0
Citations
0
Study type
Primary study
adulthumans
Prospective observational study of 2 wearable strain sensors for measuring the respiratory rate.
Journal
Medicine · 2024
PMID
39029069
RCR
0.7
Citations
2
Study type
Observational study
humansrespiratory rate
Contact-Based Methods for Measuring Respiratory Rate.
Journal
Sensors (Basel, Switzerland) · 2019
PMID
30795595
RCR
11.9
Citations
152
Study type
Review
exercisehumans
Breathing Rate Estimation From the Electrocardiogram and Photoplethysmogram: A Review.
Journal
IEEE reviews in biomedical engineering · 2018
PMID
29990026
RCR
10.7
Citations
163
Study type
Review
algorithmselectrocardiography
An assessment of algorithms to estimate respiratory rate from the electrocardiogram and photoplethysmogram.
Journal
Physiological measurement · 2016
PMID
27027672
RCR
8.9
Citations
153
Study type
Primary study
adolescentadult
Toward a Robust Estimation of Respiratory Rate From Pulse Oximeters.
Journal
IEEE transactions on bio-medical engineering · 2017
PMID
27875128
RCR
7.2
Citations
108
Study type
Validity study
adolescentadult
Photoplethysmographic derivation of respiratory rate: a review of relevant physiology.
Journal
Journal of medical engineering & technology · 2012
PMID
22185462
RCR
5.1
Citations
104
Study type
Review
humansmonitoring, physiologic
Comparison of different modulations of photoplethysmography in extracting respiratory rate: from a physiological perspective.
Journal
Physiological measurement · 2021
PMID
32731213
RCR
2.7
Citations
28
Study type
Comparative study
algorithmsarm
Non-Contact Respiratory Monitoring Using an RGB Camera for Real-World Applications.
Journal
Sensors (Basel, Switzerland) · 2021
PMID
34372363
RCR
2.6
Citations
19
Study type
Primary study
humansmonitoring, physiologic
An IMU-Based Wearable System for Respiratory Rate Estimation in Static and Dynamic Conditions.
Journal
Cardiovascular engineering and technology · 2023
PMID
36849621
RCR
2.9
Citations
10
Study type
Primary study
Sample size
11 women
malehumans
Contactless Camera-Based Heart Rate and Respiratory Rate Monitoring Using AI on Hardware.
Journal
Sensors (Basel, Switzerland) · 2023
PMID
37177754
RCR
2.0
Citations
6
Study type
Primary study
humansheart rate
Respiratory Rate Estimation during Walking and Running Using Breathing Sounds Recorded with a Microphone.
Journal
Biosensors · 2023
PMID
37367002
RCR
1.7
Citations
10
Study type
Primary study
malefemale
Electrocardiogram Derived Respiratory Rate Using a Wearable Armband.
Journal
IEEE transactions on bio-medical engineering · 2021
PMID
32746038
RCR
1.5
Citations
13
Study type
Primary study
Sample size
15 subjects
algorithmselectrocardiography
Comparative evaluation of susceptibility to motion artifact in different wearable systems for monitoring respiratory rate.
Journal
IEEE transactions on information technology in biomedicine : a publication of the IEEE Engineering in Medicine and Biology Society · 2010
PMID
20007035
RCR
1.3
Citations
32
Study type
Comparative study
adultartifacts
A novel computational signal processing framework towards multimodal vital signs extraction using neck-worn wearable devices.
Journal
Scientific reports · 2024
PMID
39333140
RCR
2.2
Citations
4
Study type
Primary study
humanswearable electronic devices
Finger and forehead PPG signal comparison for respiratory rate estimation.
Journal
Physiological measurement · 2020
PMID
31422948
RCR
1.2
Citations
15
Study type
Primary study
Sample size
35 subjects
adultfemale
Feasibility of Heart Rate and Respiratory Rate Estimation by Inertial Sensors Embedded in a Virtual Reality Headset.
Journal
Sensors (Basel, Switzerland) · 2021
PMID
33327531
RCR
0.9
Citations
10
Study type
Primary study
ballistocardiographyfeasibility studies
Respiratory modulation of the heart rate: A potential biomarker of cardiorespiratory function in human.
Journal
Computers in biology and medicine · 2024
PMID
38564855
RCR
0.5
Citations
1
Study type
Primary study
humansmale
Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator.
Journal
Sensors (Basel, Switzerland) · 2024
PMID
39686013
RCR
0.8
Citations
2
Study type
Primary study
humansrespiratory rate
A systematic review of contactless respiratory rate measurement using RGB cameras.
Journal
Physiological measurement · 2025
PMID
40816317
Citations
2
Study type
Systematic review
respiratory ratehumans
Comparison of Techniques for Respiratory Rate Extraction from Electrocardiogram and Photoplethysmogram.
Journal
Sensors (Basel, Switzerland) · 2025
PMID
40871998
Citations
4
Study type
Comparative study
photoplethysmographyhumans
Continuous respiratory rate monitoring through temporal fusion of ECG and PPG signals.
Journal
PloS one · 2025
PMID
40526643
Citations
3
Study type
Primary study
Sample size
42 subjects
humansrespiratory rate
Toward accurate estimation of respiratory rate from the photoplethysmogram: effect of different window period of PPG signals.
Journal
Physical and engineering sciences in medicine · 2025
PMID
40586998
Citations
2
Study type
Primary study
Sample size
524 participants
photoplethysmographyhumans
Accelerometer-based estimation of respiratory rate using principal component analysis and autocorrelation.
Journal
Physiological measurement · 2025
PMID
40054067
Citations
1
Study type
Primary study
humansaccelerometry
A Multi-Parametric Wearable System to Monitor Neck Movements and Respiratory Frequency of Computer Workers.
Journal
Sensors (Basel, Switzerland) · 2020
PMID
31963696
RCR
3.6
Citations
35
Study type
Primary study
adultcomputers
In-Ear Audio Wearable: Measurement of Heart and Breathing Rates for Health and Safety Monitoring.
Journal
IEEE transactions on bio-medical engineering · 2019
PMID
28678697
RCR
2.0
Citations
29
Study type
Primary study
adultalgorithms
Respiratory Waveform Estimation From Multiple Accelerometers: An Optimal Sensor Number and Placement Analysis.
Journal
IEEE journal of biomedical and health informatics · 2020
PMID
30176614
RCR
1.6
Citations
18
Study type
Primary study
accelerometryadolescent
Electrodeless Heart and Respiratory Rate Estimation during Sleep Using a Single Fabric Band and Event-Based Edge Processing.
Journal
Sensors (Basel, Switzerland) · 2022
PMID
36081149
RCR
0.5
Citations
4
Study type
Primary study
heart ratehumans
Conflicting Studies3
Can Caregivers Reliably Assess Their Child's Heart Rate and Respiration Rate Using Smartphone or Smartwatch Applications?
Journal
Pediatric emergency care · 2025
PMID
40341066
Citations
1
Study type
Primary study
Sample size
213 patients
Bears on
Core claim
humanschild
Comparison of manual and automated respiratory rate measurements on hospital wards: a prospective observational study.
Journal
Journal of clinical monitoring and computing · 2026
PMID
41240250
Citations
1
Study type
Comparative study
Bears on
Core claim
humansrespiratory rate
The use of a smart-textile garment during high-intensity functional training: a pilot study.
Journal
The Journal of sports medicine and physical fitness · 2019
PMID
30024125
RCR
0.6
Citations
13
Study type
Primary study
Bears on
Secondary point
adultclothing
Letters, Editorials and Comments (not counted in the rating)3
Estimation of Heart Rate and Respiratory Rate from PPG Signal Using Complementary Ensemble Empirical Mode Decomposition with both Independent Component Analysis and Non-Negative Matrix Factorization.
Journal
Sensors (Basel, Switzerland) · 2021
PMID
32517226
RCR
1.3
Citations
14
algorithmsheart rate
Video-based physiologic monitoring: promising applications for the ICU and beyond.
Journal
NPJ digital medicine · 2022
PMID
35256730
Bears on
Secondary point
One small wearable, one giant leap for patient safety?
Journal
Journal of clinical monitoring and computing · 2022
PMID
34665392
Bears on
Secondary point
humanspatient safety
Evidence on: Continuous wearable vital-sign monitoring detects patient deterioration earlier than intermittent checks.
1 scored
Null-Result Studies1
Detecting Patient Deterioration Early Using Continuous Heart rate and Respiratory rate Measurements in Hospitalized COVID-19 Patients.
Journal
Journal of medical systems · 2023
PMID
36692798
RCR
1.1
Citations
4
Study type
Primary study
Sample size
19 patients
Bears on
Core claim
humansheart rate
Evidence on: A consumer-grade contactless camera measures respiratory rate accurately.
2 scored
Anchor Studies1
A systematic review of contactless respiratory rate measurement using RGB cameras.
Journal
Physiological measurement · 2025
PMID
40816317
Citations
2
Study type
Systematic review
respiratory ratehumans
Supporting Studies1
Effectiveness of consumer-grade contactless vital signs monitors: a systematic review and meta-analysis.
Journal
Journal of clinical monitoring and computing · 2022
PMID
34240262
RCR
2.9
Citations
22
Study type
Meta-analysis
Sample size
30 participants
adultheart rate
01 Research Log
AUG 1 2026
Effectiveness of consumer-grade contactless vital signs monitors: a systematic review and meta-analysis. (Journal of clinical monitoring and computing 2022) entered as anchor on the measurement_validity claim.
Clinical evaluation of a smart wristband for monitoring oxygen saturation, pulse rate, and respiratory rate. (Journal of clinical monitoring and computing 2025) entered as supporting on the measurement_validity claim.
Comparison of manual and automated respiratory rate measurements on hospital wards: a prospective observational study. (Journal of clinical monitoring and computing 2026) entered as conflicting on the measurement_validity claim.
Clinical validation of a novel accelerometer-based respiratory rate monitor. (Journal of clinical monitoring and computing 2026) entered as supporting on the measurement_validity claim.
Monitoring respiratory rates with a wearable system using a stretchable strain sensor during moderate exercise. (Medical & biological engineering & computing 2020) entered as supporting on the measurement_validity claim.
An IMU-Based Wearable System for Respiratory Rate Estimation in Static and Dynamic Conditions. (Cardiovascular engineering and technology 2023) entered as supporting on the measurement_validity claim.
Toward accurate estimation of respiratory rate from the photoplethysmogram: effect of different window period of PPG signals. (Physical and engineering sciences in medicine 2025) entered as supporting on the measurement_validity claim.
Respiratory modulation of the heart rate: A potential biomarker of cardiorespiratory function in human. (Computers in biology and medicine 2024) entered as supporting on the measurement_validity claim.
Respiratory rate assessments using a dual-accelerometer device. (Respiratory physiology & neurobiology 2014) entered as supporting on the measurement_validity claim.
Validity of a novel respiratory rate monitor comprising stretchable strain sensors during a 6-min walking test in patients with chronic pulmonary obstructive disease. (Respiratory medicine 2022) entered as supporting on the measurement_validity claim.
A novel computational signal processing framework towards multimodal vital signs extraction using neck-worn wearable devices. (Scientific reports 2024) entered as supporting on the measurement_validity claim.
An assessment of algorithms to estimate respiratory rate from the electrocardiogram and photoplethysmogram. (Physiological measurement 2016) entered as supporting on the measurement_validity claim.
Finger and forehead PPG signal comparison for respiratory rate estimation. (Physiological measurement 2020) entered as supporting on the measurement_validity claim.
Comparison of different modulations of photoplethysmography in extracting respiratory rate: from a physiological perspective. (Physiological measurement 2021) entered as supporting on the measurement_validity claim.
Agreement between standard and continuous wireless vital sign measurements after major abdominal surgery: a clinical comparison study. (Physiological measurement 2022) entered as supporting on the measurement_validity claim.
Accelerometer-based estimation of respiratory rate using principal component analysis and autocorrelation. (Physiological measurement 2025) entered as supporting on the measurement_validity claim.
A systematic review of contactless respiratory rate measurement using RGB cameras. (Physiological measurement 2025) entered as supporting on the measurement_validity claim.
Bluetooth low energy thermohygrometric sensor for continuous respiratory rate monitoring: 48 h breathing simulator and human proof-of-concept. (Biomedical physics & engineering express 2026) entered as supporting on the measurement_validity claim.
Prospective observational study of 2 wearable strain sensors for measuring the respiratory rate. (Medicine 2024) entered as supporting on the measurement_validity claim.
Can Caregivers Reliably Assess Their Child's Heart Rate and Respiration Rate Using Smartphone or Smartwatch Applications? (Pediatric emergency care 2025) entered as conflicting on the measurement_validity claim.
Breathing Rate Estimation From the Electrocardiogram and Photoplethysmogram: A Review. (IEEE reviews in biomedical engineering 2018) entered as supporting on the measurement_validity claim.
Toward a Robust Estimation of Respiratory Rate From Pulse Oximeters. (IEEE transactions on bio-medical engineering 2017) entered as supporting on the measurement_validity claim.
Electrocardiogram Derived Respiratory Rate Using a Wearable Armband. (IEEE transactions on bio-medical engineering 2021) entered as supporting on the measurement_validity claim.
Comparative evaluation of susceptibility to motion artifact in different wearable systems for monitoring respiratory rate. (IEEE transactions on information technology in biomedicine : a publication of the IEEE Engineering in Medicine and Biology Society 2010) entered as supporting on the measurement_validity claim.
Novel wearable and contactless heart rate, respiratory rate, and oxygen saturation monitoring devices: a systematic review and meta-analysis. (Anaesthesia 2022) entered as anchor on the measurement_validity claim.
Clinical validation of a wearable respiratory rate device: A brief report. (Chronic respiratory disease 2023) entered as anchor on the measurement_validity claim.
Continuous respiratory rate monitoring through temporal fusion of ECG and PPG signals. (PloS one 2025) entered as supporting on the measurement_validity claim.
Reliability of Zephyr BioHarness Respiratory Rate at Rest, During the Modified Canadian Aerobic Fitness Test and Recovery. (Journal of strength and conditioning research 2020) entered as supporting on the measurement_validity claim.
Reliable Contactless Monitoring of Heart Rate, Breathing Rate, and Breathing Disturbance During Sleep in Aging: Digital Health Technology Evaluation Study. (JMIR mHealth and uHealth 2024) entered as supporting on the measurement_validity claim.
Feasibility of Monitoring Heart and Respiratory Rates Using Nonwearable Devices and Consistency of the Measured Parameters: Pilot Feasibility Study. (JMIR human factors 2024) entered as supporting on the measurement_validity claim.
The use of a smart-textile garment during high-intensity functional training: a pilot study. (The Journal of sports medicine and physical fitness 2019) entered as conflicting on the measurement_validity claim.
Photoplethysmographic derivation of respiratory rate: a review of relevant physiology. (Journal of medical engineering & technology 2012) entered as supporting on the measurement_validity claim.
Respiratory Rate Estimation during Walking and Running Using Breathing Sounds Recorded with a Microphone. (Biosensors 2023) entered as supporting on the measurement_validity claim.
Morphic Sensors for Respiratory Parameters Estimation: Validation against Overnight Polysomnography. (Biosensors 2023) entered as supporting on the measurement_validity claim.
Evaluation of Photoplethysmography-Based Monitoring of Respiration Rate During High-Intensity Interval Training: Implications for Healthcare Monitoring. (Biosensors 2024) entered as supporting on the measurement_validity claim.
Validation of Instantaneous Respiratory Rate Using Reflectance PPG from Different Body Positions. (Sensors (Basel, Switzerland) 2019) entered as supporting on the measurement_validity claim.
Contact-Based Methods for Measuring Respiratory Rate. (Sensors (Basel, Switzerland) 2019) entered as supporting on the measurement_validity claim.
Estimation of Heart Rate and Respiratory Rate from PPG Signal Using Complementary Ensemble Empirical Mode Decomposition with both Independent Component Analysis and Non-Negative Matrix Factorization. (Sensors (Basel, Switzerland) 2021) entered as supporting on the measurement_validity claim.
Feasibility of Heart Rate and Respiratory Rate Estimation by Inertial Sensors Embedded in a Virtual Reality Headset. (Sensors (Basel, Switzerland) 2021) entered as supporting on the measurement_validity claim.
Non-Contact Respiratory Monitoring Using an RGB Camera for Real-World Applications. (Sensors (Basel, Switzerland) 2021) entered as supporting on the measurement_validity claim.
Contactless Camera-Based Heart Rate and Respiratory Rate Monitoring Using AI on Hardware. (Sensors (Basel, Switzerland) 2023) entered as supporting on the measurement_validity claim.
Validating a Consumer Smartwatch for Nocturnal Respiratory Rate Measurements in Sleep Monitoring. (Sensors (Basel, Switzerland) 2026) entered as supporting on the measurement_validity claim.
A Guide to Measuring Heart and Respiratory Rates Based on Off-the-Shelf Photoplethysmographic Hardware and Open-Source Software. (Sensors (Basel, Switzerland) 2024) entered as supporting on the measurement_validity claim.
Respiratory Rate Monitoring via a Fibre Bragg Grating-Embedded Respirator Mask with a Wearable Miniature Interrogator. (Sensors (Basel, Switzerland) 2024) entered as supporting on the measurement_validity claim.
Accuracy of Rhythm Diagnostic Systems' MultiSense ® in Detection of Arterial Oxygen Saturation and Respiratory Rate During Hypoxia in Humans: Effects of Skin Color and Device Localization. (Sensors (Basel, Switzerland) 2025) entered as supporting on the measurement_validity claim.
Accuracy of the Instantaneous Breathing and Heart Rates Estimated by Smartphone Inertial Units. (Sensors (Basel, Switzerland) 2025) entered as supporting on the measurement_validity claim.
Comparison of Techniques for Respiratory Rate Extraction from Electrocardiogram and Photoplethysmogram. (Sensors (Basel, Switzerland) 2025) entered as supporting on the measurement_validity claim.
Seconds Matter: Rapid Non-Contact Monitoring of Heart and Respiratory Rate from Face Videos. (Sensors (Basel, Switzerland) 2026) entered as supporting on the measurement_validity claim.
AUG 1 2026
Comparison of manual and automated respiratory rate measurements on hospital wards: a prospective observational study. (Journal of clinical monitoring and computing 2026) entered as a conflicting study on the measurement_validity claim, bearing on the core claim.
It caps the rating until reconciled.
AUG 1 2026
Can Caregivers Reliably Assess Their Child's Heart Rate and Respiration Rate Using Smartphone or Smartwatch Applications? (Pediatric emergency care 2025) entered as a conflicting study on the measurement_validity claim, bearing on the core claim.
It caps the rating until reconciled.
AUG 1 2026
The use of a smart-textile garment during high-intensity functional training: a pilot study. (The Journal of sports medicine and physical fitness 2019) entered as a conflicting study on the measurement_validity claim, flagged as bearing on a secondary point, not the core direction.
Because it does not hit the core claim, it does not cap the rating and is tracked as an open question.
AUG 14 2026
One small wearable, one giant leap for patient safety? (Journal of clinical monitoring and computing 2022) entered as conflicting on the measurement_validity claim.
Video-based physiologic monitoring: promising applications for the ICU and beyond. (NPJ digital medicine 2022) entered as conflicting on the measurement_validity claim.
AUG 14 2026
One small wearable, one giant leap for patient safety? (Journal of clinical monitoring and computing 2022) entered as a conflicting study on the measurement_validity claim, flagged as bearing on a secondary point, not the core direction.
Because it does not hit the core claim, it does not cap the rating and is tracked as an open question.
AUG 14 2026
Video-based physiologic monitoring: promising applications for the ICU and beyond. (NPJ digital medicine 2022) entered as a conflicting study on the measurement_validity claim, flagged as bearing on a secondary point, not the core direction.
Because it does not hit the core claim, it does not cap the rating and is tracked as an open question.
AUG 21 2026
An IMU-Based Wearable System for Respiratory Rate Estimation in Static and Dynamic Conditions. (Cardiovascular engineering and technology 2023) entered as supporting on the measurement_validity claim.
SEP 4 2026
Respiratory Waveform Estimation From Multiple Accelerometers: An Optimal Sensor Number and Placement Analysis. (IEEE journal of biomedical and health informatics 2020) entered as supporting on the measurement_validity claim.
In-Ear Audio Wearable: Measurement of Heart and Breathing Rates for Health and Safety Monitoring. (IEEE transactions on bio-medical engineering 2019) entered as supporting on the measurement_validity claim.
A Multi-Parametric Wearable System to Monitor Neck Movements and Respiratory Frequency of Computer Workers. (Sensors (Basel, Switzerland) 2020) entered as supporting on the measurement_validity claim.
Non-Contact Respiratory Monitoring Using an RGB Camera for Real-World Applications. (Sensors (Basel, Switzerland) 2021) entered as supporting on the measurement_validity claim.
Electrodeless Heart and Respiratory Rate Estimation during Sleep Using a Single Fabric Band and Event-Based Edge Processing. (Sensors (Basel, Switzerland) 2022) entered as supporting on the measurement_validity claim.
SEP 17 2026
Effectiveness of consumer-grade contactless vital signs monitors: a systematic review and meta-analysis. (Journal of clinical monitoring and computing 2022) entered as anchor on the measurement_validity claim.
Respiratory Waveform Estimation From Multiple Accelerometers: An Optimal Sensor Number and Placement Analysis. (IEEE journal of biomedical and health informatics 2020) entered as supporting on the measurement_validity claim.
SEP 29 2026
Detecting Patient Deterioration Early Using Continuous Heart rate and Respiratory rate Measurements in Hospitalized COVID-19 Patients. (Journal of medical systems 2023) entered as null_result on the deterioration_detection claim.
SEP 29 2026
Detecting Patient Deterioration Early Using Continuous Heart rate and Respiratory rate Measurements in Hospitalized COVID-19 Patients. (Journal of medical systems 2023) entered as a null result study on the deterioration_detection claim, bearing on the core claim.
It caps the rating until reconciled.
SEP 29 2026
Effectiveness of consumer-grade contactless vital signs monitors: a systematic review and meta-analysis. (Journal of clinical monitoring and computing 2022) entered as supporting on the contactless_rr claim.
A systematic review of contactless respiratory rate measurement using RGB cameras. (Physiological measurement 2025) entered as anchor on the contactless_rr claim.
02 Revision Log
SEP 29 2026
contactless_rr: opened at Uncertain
Opened at Uncertain by rule from the current evidence for: A consumer-grade contactless camera measures respiratory rate accurately..
SEP 29 2026
deterioration_detection: opened at Unsupported
Opened at Unsupported by rule from the current evidence for: Continuous wearable vital-sign monitoring detects patient deterioration earlier than intermittent checks..
AUG 1 2026
measurement_validity: opened at Uncertain
Opened at Uncertain by rule from the current evidence for: Consumer-grade wearable or contactless devices measure respiratory rate with accuracy comparable to clinical reference methods..
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