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A Technology System to Help People With Multiple Disabilities Increase Contact With Objects and Control Environmental Stimulation: Single-Case Research Design

A Technology System to Help People With Multiple Disabilities Increase Contact With Objects and Control Environmental Stimulation: Single-Case Research Design

The purpose of this study was to assess (1) the suitability (applicability) of a sensor that did not need to be displayed in the proximity of the objects to be touched or explored but would detect the responses from a distance, thus bypassing the difficulties mentioned regarding optic and pressure sensors, and (2) the effectiveness of the sensor and related technology system in helping the participants increase contact with objects and control environmental stimulation.

Giulio E Lancioni, Gloria Alberti, Chiara Filippini, Nirbhay N Singh, Mark F O'Reilly, Jeff Sigafoos, Valeria Chiariello, Oriana Troccoli

JMIR Rehabil Assist Technol 2025;12:e70378

Effects of Missing Data on Heart Rate Variability Measured From A Smartwatch: Exploratory Observational Study

Effects of Missing Data on Heart Rate Variability Measured From A Smartwatch: Exploratory Observational Study

This study conducted long-term (months) continuous monitoring of high-resolution HRV data during daily life activities using a COTS smartwatch with a photoplethysmography sensor and activity (step count) data. The primary aim of this study was to evaluate the influence of missing data on HRV metrics collected from a photoplethysmography-based smartwatch both at rest and during physical activity in real-world settings.

Hope Davis-Wilson, Meghan Hegarty-Craver, Pooja Gaur, Matthew Boyce, Jonathan R Holt, Edward Preble, Randall Eckhoff, Lei Li, Howard Walls, David Dausch, Dorota Temple

JMIR Form Res 2025;9:e53645

Detecting Freezing of Gait in Parkinson Disease Using Multiple Wearable Sensors Sets During Various Walking Tasks Relative to Medication Conditions (DetectFoG): Protocol for a Prospective Cohort Study

Detecting Freezing of Gait in Parkinson Disease Using Multiple Wearable Sensors Sets During Various Walking Tasks Relative to Medication Conditions (DetectFoG): Protocol for a Prospective Cohort Study

The use of multiple sensors provides a more detailed and holistic view of the patient’s movements, enabling the capture of subtle changes that may not be detectable with a single sensor [15]. An IMU is cost-effective and straightforward to wear, rendering it suitable for both laboratory evaluation and daily use.

Sébastien Cordillet, Sophie Drapier, Frédérique Leh, Audeline Dumont, Florian Bidet, Isabelle Bonan, Karim Jamal

JMIR Res Protoc 2025;14:e58612

The Effects of Self-Monitoring Using a Smartwatch and Smartphone App on Stress Awareness, Self-Efficacy, and Well-Being–Related Outcomes in Police Officers: Longitudinal Mixed Design Study

The Effects of Self-Monitoring Using a Smartwatch and Smartphone App on Stress Awareness, Self-Efficacy, and Well-Being–Related Outcomes in Police Officers: Longitudinal Mixed Design Study

The emergence of wearable sensor technology facilitates promising opportunities to monitor a broad set of health-related outcomes [10]. Besides the initial use cases of wearables in estimating daily physical activity levels [11] and sleep duration [12], the introduction of photoplethysmography sensors enabled the measurement of other metrics such as heart rate [13], heart rate variability (HRV) [14], oxygen saturation [15], and potentially blood pressure [16].

Herman Jaap de Vries, Roos Delahaij, Marianne van Zwieten, Helen Verhoef, Wim Kamphuis

JMIR Mhealth Uhealth 2025;13:e60708

Impact of the Smarter Safer Homes Solution on Quality of Life and Health Outcomes in Older People Living in Their Own Homes: Randomized Controlled Trial

Impact of the Smarter Safer Homes Solution on Quality of Life and Health Outcomes in Older People Living in Their Own Homes: Randomized Controlled Trial

These technologies encompass a wide range of devices and systems, including sensor networks, remote monitoring, and assistive devices, which can enhance safety, health monitoring, and overall quality of life for older adults [8,9]. By integrating these technologies into the home environment, smart home solutions have the potential to address various challenges associated with aging in place, such as falls, medication adherence, and social isolation [10].

Wei Lu, David Silvera-Tawil, Hwan-Jin Yoon, Liesel Higgins, Qing Zhang, Mohanraj Karunanithi, Julia Bomke, Joshua Byrnes, Jennifer Hewitt, Vanessa Smallbon, Jill Freyne, Deepa Prabhu, Marlien Varnfield

J Med Internet Res 2025;27:e59921

Reliability and Accuracy of the Fitbit Charge 4 Photoplethysmography Heart Rate Sensor in Ecological Conditions: Validation Study

Reliability and Accuracy of the Fitbit Charge 4 Photoplethysmography Heart Rate Sensor in Ecological Conditions: Validation Study

However, even if the concept remains similar, connected watches usually come with a green light PPG sensor for its ability to reduce motion artifacts, contrary to the red ones commonly used in the medical field for blood oxygen saturation evaluation [8,9]. The reason for this is that the deeper the light penetrates the tissue (eg, red wavelength), the more the pulse wave is affected by limb movements [10,11].

Maxime Ceugniez, Hervé Devanne, Eric Hermand

JMIR Mhealth Uhealth 2025;13:e54871

The Effect of Inhaled Beta-2 Agonists on Heart Rate in Patients With Asthma: Sensor-Based Observational Study

The Effect of Inhaled Beta-2 Agonists on Heart Rate in Patients With Asthma: Sensor-Based Observational Study

In this observational study, we assessed pulse rate as an approximation of HR continuously for 1 year with sensor-based wristwatches, while also registering physical activity levels and medication adherence, and the exact timing of beta-2 agonist inhalation with the use of smart inhalers. These data gives us the opportunity to assess the real-life effects of beta-2 agonists on HR. Therefore, in this study, we aim to assess the relationship between beta-2 agonists (LABAs and SABAs) and HR.

Rishi Jayant Khusial, Jacob K Sont, Omar S Usmani, Matteo Bonini, Kian Fan Chung, Stephen James Fowler, Persijn J Honkoop

JMIR Cardio 2024;8:e56848

User Perceptions of Wearability of Knitted Sensor Garments for Long-Term Monitoring of Breathing Health: Thematic Analysis of Focus Groups and a Questionnaire Survey

User Perceptions of Wearability of Knitted Sensor Garments for Long-Term Monitoring of Breathing Health: Thematic Analysis of Focus Groups and a Questionnaire Survey

This paper aims to explore user perceptions of our knitted breathing sensor garment to assess how it may evolve to meet user requirements for long-term breathing monitoring. We then investigate whether the preferred sensor implementation can also output good quality breathing signals.

Kristel Fobelets, Nikita Mohanty, Mara Thielemans, Lieze Thielemans, Gillian Lake-Thompson, Meijing Liu, Kate Jopling, Kai Yang

JMIR Biomed Eng 2024;9:e58166

Population Digital Health: Continuous Health Monitoring and Profiling at Scale

Population Digital Health: Continuous Health Monitoring and Profiling at Scale

We also demonstrate the feasibility of PDH and highlight its benefit through three case studies targeting key challenges: (1) inadequacy of digital health information, (2) inaccuracy of sensor data on health Io T devices, and (3) spatiotemporal data sparsity in digital health information.

Naser Hossein Motlagh, Agustin Zuniga, Ngoc Thi Nguyen, Huber Flores, Jiangtao Wang, Sasu Tarkoma, Mattia Prosperi, Sumi Helal, Petteri Nurmi

Online J Public Health Inform 2024;16:e60261

Effects of Monitoring Frailty Through a Mobile/Web-Based Application and a Sensor Kit to Prevent Functional Decline in Frail and Prefrail Older Adults: FACET (Frailty Care and Well Function) Pilot Randomized Controlled Trial

Effects of Monitoring Frailty Through a Mobile/Web-Based Application and a Sensor Kit to Prevent Functional Decline in Frail and Prefrail Older Adults: FACET (Frailty Care and Well Function) Pilot Randomized Controlled Trial

This kit consists of a gait-speed sensor (Figure 3) [20], a sensor to indirectly (through the chair stand test) measure power in the lower limbs (Figure 4) [19], and a wireless commercial weight scale to measure involuntary weight loss. This information was enriched to build a short comprehensive geriatric assessment thought different questionnaires, which were tailored to language appropriate for the study’s target population.

Myriam Valdés-Aragonés, Rodrigo Pérez-Rodríguez, José Antonio Carnicero, Pedro A Moreno-Sánchez, Myriam Oviedo-Briones, Elena Villalba-Mora, Pedro Abizanda-Soler, Leocadio Rodríguez-Mañas

J Med Internet Res 2024;26:e58312