JMIR mHealth and uHealth

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Physical Activity Pattern of Adults With Metabolic Syndrome Risk Factors: Time-Series Cluster Analysis

As a result, an increasing number of studies are focusing on measuring and analyzing physical activity using wrist-worn devices [7]. Several studies are currently exploring different aspects of physical activity using wrist-worn devices. These include investigations of the accuracy of these devices [8,9], the relationship between physical activity and personal characteristics [2,10], the impact of interventions using wrist-worn wearables [11,12], and behavior prediction [13-15].

Junhyoung Kim, Jin-Young Choi, Hana Kim, Taeksang Lee, Jaeyoung Ha, Sangyi Lee, Jungmi Park, Gyeong-Suk Jeon, Sung-il Cho

JMIR Mhealth Uhealth 2023;11:e50663

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Accuracy and Reliability of a Suite of Digital Measures of Walking Generated Using a Wrist-Worn Sensor in Healthy Individuals: Performance Characterization Study

First, analyses tend to rely on truth labels originated by participants’ self-reports, short-term close monitoring [10-12], or from reference devices with suboptimal accuracy (mean absolute percentage error >20%) and with the same body placement as the investigational devices, which would bias agreement results [13].

Nathan Kowahl, Sooyoon Shin, Poulami Barman, Erin Rainaldi, Sara Popham, Ritu Kapur

JMIR Hum Factors 2023;10:e48270

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Dementia-Related Products on an e-Commerce Platform

Electronic commerce (e-commerce) has allowed patients and their caregivers to directly buy health products and medical devices from a seller over the internet. The largest of these online corporations include Alibaba, Amazon, and e Bay. Tmall.com, a Chinese-language business-to-consumer (B2 C) website operated by Alibaba in China, has approximately 260 million monthly visits from potential consumers and ranks number 9 among all websites in the e-commerce and shopping category [1].

Benjamin K P Woo

JMIR Biomed Eng 2020;5(1):e17514

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Continuous Monitoring of Heart Rate Variability in Free-Living Conditions Using Wearable Sensors: Exploratory Observational Study

Among wearable sensors, commercial-off-the-shelf devices, such as smartwatches and smart rings, that integrate heart rate (HR), blood oxygen, and activity monitors are popular devices for use in real-world physiological monitoring because of their already broad owner base and form factor that is compatible with long-term wear [3].

Pooja Gaur, Dorota S Temple, Meghan Hegarty-Craver, Matthew D Boyce, Jonathan R Holt, Michael F Wenger, Edward A Preble, Randall P Eckhoff, Michelle S McCombs, Hope C Davis-Wilson, Howard J Walls, David E Dausch

JMIR Form Res 2024;8:e53977

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Patient Engagement With and Perspectives on a Mobile Health Home Spirometry Intervention: Mixed Methods Study

RPM uses technology such as mobile devices (m Health), wearables, or digital devices to communicate health information between patients and providers [1]. A 2022 systemic review found 268 published studies involving the use of RPM, reporting outcomes such as reduced health system costs, decreased hospitalizations, and improved patient quality of life [2,3].

Andrew W Liu, William Brown, III, Ndubuisi E Madu, Ali R Maiorano, Olivia Bigazzi, Eli Medina, Christopher Sorric, Steven R Hays, Anobel Y Odisho

JMIR Mhealth Uhealth 2024;12:e51236

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Charting a Course for Smartphones and Wearables to Transform Population Health Research

Consumer digital devices provide a major opportunity to transform our understanding of the mechanisms, determinants, and consequences of diseases, including arthritis, dementia, and heart disease [1-3]. Most people in high- and low-income societies now own and regularly use consumer digital devices. Around 9 in 10 people own a smartphone in the United Kingdom [4], while one-fifth of US adults own wearable technologies, like smartwatches and fitness trackers [5].

William G Dixon, Sabine N van der Veer, Syed Mustafa Ali, Lynn Laidlaw, Richard J B Dobson, Cathie Sudlow, Tim Chico, Jacqueline A L MacArthur, Aiden Doherty

J Med Internet Res 2023;25:e42449

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Mobile Device Accuracy for Step Counting Across Age Groups

The ubiquitous nature of mobile devices, including smartphones and wearable devices, makes them potentially useful to increase physical activity levels, and improve adherence to exercise programs. According to the Pew Research Center, approximately 80% of Americans own a smartphone [5].

François Paul Philippe Modave, Yi Guo, Jiang Bian, Matthew J Gurka, Alice Parish, Megan D Smith, Alexandra M Lee, Thomas W Buford

JMIR Mhealth Uhealth 2017;5(6):e88

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Assessing the Accuracy of Smartwatch-Based Estimation of Maximum Oxygen Uptake Using the Apple Watch Series 7: Validation Study

Additionally, researchers developed their methodologies to calculate oxygen uptake using wearable devices or smartphones [17-20]. Previous research further validated various fitness tests carried out using smartphones, offering additional insights into the accuracy of these devices in evaluating physical metrics [21,22].

Polona Caserman, Sungsoo Yum, Stefan Göbel, Andreas Reif, Silke Matura

JMIR Biomed Eng 2024;9:e59459

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Vaping: Public Health, Social Media, and Toxicity

Among the products from all the brands mentioned above, only products from SMOK were third-generation e-cigarettes (also known as mods, a type of highly customizable aerosol-generating devices that use e-liquids and have subohm tanks that allow for higher wattage), while all other products were fourth-generation e-cigarettes (also known as pod mods, a type of modifiable pod cartridges including vape bars that use nicotine salts and can come in different shapes).

Yehao Sun, Prital Prabhu, Dongmei Li, Scott McIntosh, Irfan Rahman

Online J Public Health Inform 2024;16:e53245

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Technology Use Among Older Adults and Their Caregivers: Cross-Sectional Survey Study

Therefore, technology use was broadly defined in this study to enable research into the use of diverse types of devices and functions. Devices and functions represent different aspects of technology use. Devices encompass the equipment or hardware of technology, whereas functions pertain to the specific tasks one can perform using technology. For instance, an individual may possess a smartphone, tablet, and computer but only use them for internet browsing.

Shinduk Lee, Marcia G Ory, Deborah Vollmer Dahlke, Matthew Lee Smith

JMIR Aging 2024;7:e50759

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