e.g. mhealth
Search Results (1 to 10 of 63 Results)
Download search results: CSV END BibTex RIS
CSV download: Download all 63 search results
(up to 5,000 articles maximum)
- 21 JMIR mHealth and uHealth
- 11 JMIR Formative Research
- 10 Journal of Medical Internet Research
- 8 JMIR Cardio
- 4 JMIR Research Protocols
- 2 JMIR Biomedical Engineering
- 2 JMIR Mental Health
- 1 JMIR AI
- 1 JMIR Cancer
- 1 JMIR Medical Informatics
- 1 JMIR Perioperative Medicine
- 1 JMIR Rehabilitation and Assistive Technologies
- 0 Medicine 2.0
- 0 Interactive Journal of Medical Research
- 0 iProceedings
- 0 JMIR Human Factors
- 0 JMIR Public Health and Surveillance
- 0 JMIR Serious Games
- 0 JMIR Preprints
- 0 JMIR Bioinformatics and Biotechnology
- 0 JMIR Medical Education
- 0 JMIR Challenges
- 0 JMIR Diabetes
- 0 JMIR Data
- 0 Journal of Participatory Medicine
- 0 JMIR Dermatology
- 0 JMIR Pediatrics and Parenting
- 0 JMIR Aging
- 0 JMIR Nursing
- 0 JMIRx Med
- 0 JMIRx Bio
- 0 JMIR Infodemiology
- 0 Transfer Hub (manuscript eXchange)
- 0 JMIR Neurotechnology
- 0 Asian/Pacific Island Nursing Journal
- 0 Online Journal of Public Health Informatics
- 0 JMIR XR and Spatial Computing (JMXR)
AF: atrial fibrillation; ECG: electrocardiogram; PPG: photoplethysmography; SR: sinus rhythm.
Metric M2 is the proportion of AF episodes detected through PPG monitoring relative to the total number of monitoring epochs, assessing frequency-based AF variations (Figure 2).
A schematic diagram of metric M2. AF: atrial fibrillation; ECG: electrocardiogram; PPG: photoplethysmography; SR: sinus rhythm.
JMIR Cardio 2025;9:e78075
Download Citation: END BibTex RIS
The PDL is a wrist-worn, research-grade monitoring device measuring photoplethysmography (PPG)- and accelerometry-derived data (Figure 1 A). Participants were blinded to their recorded parameters and did not receive feedback based on the measurements. The PDL is rain and splash resistant, but cannot be worn during showering or swimming. Data were offloaded from the PDL via Bluetooth as soon as the device was within reach of a gateway (Monitoring Study bo X [MSX]; Figure 1 B).
JMIR Form Res 2025;9:e59116
Download Citation: END BibTex RIS
Evaluating Diversity in Open Photoplethysmography Datasets: Protocol for a Systematic Review
Photoplethysmography (PPG) is an optical method for measuring blood volume changes in microcirculation, through noninvasive photodetection. It has become a widespread and essential tool, providing the sensing technology for pulse oximeters in clinical use and being widely used in consumer wearables such as smartwatches for heart rate monitoring. However, technical aspects of PPG make it susceptible to intrinsic bias, with the potential to adversely affect particular patient and consumer populations.
JMIR Res Protoc 2025;14:e73040
Download Citation: END BibTex RIS
Photoplethysmography (PPG) [3,4], ballistocardiography [5,6], electrical bioimpedance [7], or tonometry [8] has been widely studied for these purposes. Due to the ease of implementation, the optical PPG module is more often integrated into the wearable devices. The potential of estimation of BP [9,10] and PWV [11-13] from PPG signals attracts much attention.
Various approaches have been investigated to estimate PWV from PPG signals of different measurement sites [14].
JMIR Biomed Eng 2025;10:e58756
Download Citation: END BibTex RIS
This method uses a 2-sensor system that combines photoplethysmography (PPG) and a pressure sensor [12,13]. Previous investigations have revealed that, depending on the device, the variability of the systolic pressure has been overestimated by 78% and 103% in the low-frequency band [13]. In addition, the same investigation demonstrated an underestimation of the baroreflex sensitivity by −24% or −31%.
JMIR Cardio 2025;9:e54771
Download Citation: END BibTex RIS
Consequently, there is growing interest in wrist-, upper arm-, or forearm-wearable devices, which use photoplethysmography (PPG) [13]. PPG is a noninvasive measurement technique that detects blood volume changes in the microvascular bed of tissue by illuminating the skin and measuring the reflected light [14].
JMIR Cardio 2025;9:e67110
Download Citation: END BibTex RIS
Photoplethysmography (PPG) is an optical measurement technique that records changes in the light reflected from the skin surface due to volumetric changes in the facial blood vessels; small variations in perfusion provide valuable information about the cardiovascular system [9]. PPG has been used to measure PR [10,11], oxygen saturation [12], BP [13,14], and RR [10,15] and to detect atrial fibrillation [16].
JMIR Res Protoc 2025;14:e58334
Download Citation: END BibTex RIS
Wrist-worn devices most often use embedded photoplethysmography sensors that detect changes in light intensity on the skin surface due to changes in blood volume during the cardiac cycle to estimate heart rate [9]. While not all smartwatches are certified as medical devices currently, they offer a way of assessing the viability of photoplethysmography sensors, which are used in some cleared medical devices [9-11].
JMIR Form Res 2025;9:e53645
Download Citation: END BibTex RIS
The Empatica 4 is a watch-like multisensor device that measures physiological data such as electrodermal activity (EDA), photoplethysmography, skin temperature, and accelerometer readings. It is compact, lightweight, and comfortable to wear, making it suitable for unobtrusive continuous monitoring during cognitive screening of older adults.
JMIR Med Inform 2025;13:e60250
Download Citation: END BibTex RIS
The underlying CWD technology is mainly based on electrocardiography or photoplethysmography (PPG). While an ECG measures electrical signals from the heart using surface electrodes on the skin, PPG analyzes the heart rhythm through an optical technique that measures the peripheral pulse [10]. This PPG technology has been adopted by smartwatches and smartphones, using light-emitting diodes and sensors or smartphone flashlights and cameras to generate PPG waveforms.
JMIR Form Res 2025;9:e65139
Download Citation: END BibTex RIS