Evidence map›Paper›PMID 41031393›Full record

ArticleIEEE sensors journal2025

Elucidating the Reactivity of Reflectance-Based Core-Body Photoplethysmogram to Posture and Respiratory Changes.

Afra Nawar, Onur S Kilic, Farhan N Rahman, Chuoqi Chen, John A Berkebile, Michael Chan, Amit J Shah, Omer T Inan

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in IEEE sensors journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Real-Time SpOSensors (Basel, Switzerland) · 2026
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Afra NawarSchool of Electrical and Computer Engineering, Georgia Institute of Technology, USA.
Onur S KilicSchool of Electrical and Computer Engineering, Georgia Institute of Technology, USA.
Farhan N RahmanSchool of Electrical and Computer Engineering, Georgia Institute of Technology, USA.
Chuoqi ChenSchool of Electrical and Computer Engineering, Georgia Institute of Technology, USA.
John A BerkebileSchool of Electrical and Computer Engineering, Georgia Institute of Technology, USA.
Michael ChanCoulter Department of Biomedical Engineering, Georgia Institute of Technology, USA.
Amit J ShahDepartment of Epidemiology, Rollins School of Public Health, USA; Department of Medicine, Division of Cardiology, Emory University School of Medicine, USA, and the Atlanta Veterans Medical Center, USA.
Omer T InanSchool of Electrical and Computer Engineering and the Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA USA.

Funding

Investigation of Sex Differences in Cardiovascular Risk in Rural CommunitiesR01HL163998 · NHLBI · EMORY UNIVERSITY · PI Amit Jasvant Shah, Viola Vaccarino · 2023 to 2026
$4.4M
NHLBI NIH HHS R01 HL163998
6 · The paper itself

Abstract

At-home cardiovascular monitoring has become widespread with the commercialization of the photoplethysmogram (PPG) in wearable devices. A tremendous opportunity for comprehensive monitoring of chronotropic, inotropic, and vascular characteristics of the cardiovascular system can be unlocked if PPG data are combined with signals of other modalities at the core body. However, little is known about the quality of core-body PPG or its reactivity to environmental conditions. To elucidate core-body PPG signals, we compared the reactivity and quality of sternum and back PPG signals to finger-based PPG in 24 healthy participants during a protocol with posture and breathing changes. We found that signal quality of core-body PPG was affected by body location, wavelength, LED/photodiode configuration, posture, and breathing pattern. Notably, reflectance-mode red-wavelength core-body quality was less than that of transmittance-mode finger red-wavelength PPG (p<0.05). However, green-wavelength core-body PPG quality was comparable (p>0.05, sternum) or significantly greater (p<0.001, back). We also found that PPG amplitude reactivity for core-body signals was in accordance with that of the finger (p>0.05 or p<0.05,

Indexed as

breathingcore bodylocationnon-invasive monitoringPhotoplethysmographyposturesignal quality

Identifiers

PMID41031393
PMCPMC12478533

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.