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https://www.readbyqxmd.com/read/28212327/a-robust-random-forest-based-approach-for-heart-rate-monitoring-using-photoplethysmography-signal-contaminated-by-intense-motion-artifacts
#1
Yalan Ye, Wenwen He, Yunfei Cheng, Wenxia Huang, Zhilin Zhang
The estimation of heart rate (HR) based on wearable devices is of interest in fitness. Photoplethysmography (PPG) is a promising approach to estimate HR due to low cost; however, it is easily corrupted by motion artifacts (MA). In this work, a robust approach based on random forest is proposed for accurately estimating HR from the photoplethysmography signal contaminated by intense motion artifacts, consisting of two stages. Stage 1 proposes a hybrid method to effectively remove MA with a low computation complexity, where two MA removal algorithms are combined by an accurate binary decision algorithm whose aim is to decide whether or not to adopt the second MA removal algorithm...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28212076/selecting-power-efficient-signal-features-for-a-low-power-fall-detector
#2
Changhong Wang, Stephen Redmond, Wei Lu, Michael Stevens, Stephen Lord, Nigel Lovell
Falls are a serious threat to the health of older people. A wearable fall detector can automatically detect the occurrence of a fall and alert a caregiver or an emergency response service so they may deliver immediate assistance, improving the chances of recovering from fall-related injuries. One constraint of such a wearable technology is its limited battery life. Thus, minimization of power consumption is an important design concern, all the while maintaining satisfactory accuracy of the fall detection algorithms implemented on the wearable device...
February 15, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28208839/interventions-for-preventing-childhood-obesity-with-smartphones-and-wearable-device-a-protocol-for-a-non-randomized-controlled-trial
#3
Hye Jung Yang, Jae-Heon Kang, Ok Hyun Kim, Mona Choi, Myungju Oh, Jihyun Nam, Eunju Sung
BACKGROUND: Childhood obesity is a critical health issue, both currently and for the foreseeable future. To prevent obesity, behavior changes are essential. Smartphones can be a good tool, as the number of child smartphone users is rapidly increasing. We have developed a mobile platform system named "HAPPY ME," which is a smartphone application coupled with a wearable device, designed to improve healthy behaviors to prevent childhood obesity. This study aimed to evaluate the effectiveness of obesity prevention among children 10-12 years of age using HAPPY ME...
February 13, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208620/a-review-of-wearable-technologies-for-elderly-care-that-can-accurately-track-indoor-position-recognize-physical-activities-and-monitor-vital-signs-in-real-time
#4
REVIEW
Zhihua Wang, Zhaochu Yang, Tao Dong
Rapid growth of the aged population has caused an immense increase in the demand for healthcare services. Generally, the elderly are more prone to health problems compared to other age groups. With effective monitoring and alarm systems, the adverse effects of unpredictable events such as sudden illnesses, falls, and so on can be ameliorated to some extent. Recently, advances in wearable and sensor technologies have improved the prospects of these service systems for assisting elderly people. In this article, we review state-of-the-art wearable technologies that can be used for elderly care...
February 10, 2017: Sensors
https://www.readbyqxmd.com/read/28207403/predictive-walking-age-health-analyzer
#5
Priyanka Mandal, Krishna Tank, Tapas Monday, Chih-Hung Chen, M Jamal Deen
A simple, low-power and wearable health analyzer for early identification and management of some diseases is presented. To achieve this goal, we propose a walking pattern analysis system that uses features such as speed, energy, turn ratio, and bipedal behavior to characterize and classify individuals in distinct walking-ages. A database is constructed from 74 healthy young adults in the age range of 18 to 60 years using the combination of inertial signals from an accelerometer and a gyroscope on a level path including turns...
February 9, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28193033/wearable-potentiometric-chloride-sweat-sensor-the-critical-role-of-the-salt-bridge
#6
Dong-Hoon Choi, Jin Seob Kim, Garry R Cutting, Peter C Searson
The components of sweat provide an array of potential biomarkers for health and disease. Sweat chloride is of interest as a biomarker for cystic fibrosis, electrolyte metabolism disorders, electrolyte balance, and electrolyte loss during exercise. Developing wearable sensors for biomarkers in sweat is a major technological challenge. Potentiometric sensors provide a relatively simple technology for on-body sweat chloride measurement, however, equilibration between reference and test solutions has limited the time over which accurate measurements can be made...
December 20, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/28166774/highly-wearable-cuff-less-blood-pressure-and-heart-rate-monitoring-with-single-arm-electrocardiogram-and-photoplethysmogram-signals
#7
Qingxue Zhang, Dian Zhou, Xuan Zeng
BACKGROUND: Long-term continuous systolic blood pressure (SBP) and heart rate (HR) monitors are of tremendous value to medical (cardiovascular, circulatory and cerebrovascular management), wellness (emotional and stress tracking) and fitness (performance monitoring) applications, but face several major impediments, such as poor wearability, lack of widely accepted robust SBP models and insufficient proofing of the generalization ability of calibrated models. METHODS: This paper proposes a wearable cuff-less electrocardiography (ECG) and photoplethysmogram (PPG)-based SBP and HR monitoring system and many efforts are made focusing on above challenges...
February 6, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28155094/ethical-implications-of-user-perceptions-of-wearable-devices
#8
REVIEW
L H Segura Anaya, Abeer Alsadoon, N Costadopoulos, P W C Prasad
Health Wearable Devices enhance the quality of life, promote positive lifestyle changes and save time and money in medical appointments. However, Wearable Devices store large amounts of personal information that is accessed by third parties without user consent. This creates ethical issues regarding privacy, security and informed consent. This paper aims to demonstrate users' ethical perceptions of the use of Wearable Devices in the health sector. The impact of ethics is determined by an online survey which was conducted from patients and users with random female and male division...
February 2, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28153815/clinical-evaluation-of-the-measurement-performance-of-the-philips-health-watch-a-within-person-comparative-study
#9
Jos Hendrikx, Loes S Ruijs, Lieke Ge Cox, Paul Mc Lemmens, Erik Gp Schuijers, Annelies Hc Goris
BACKGROUND: Physical inactivity is an important modifiable risk factor for chronic diseases. A new wrist-worn heart rate and activity monitor has been developed for unobtrusive data collection to aid prevention and management of lifestyle-related chronic diseases by means of behavioral change programs. OBJECTIVE: The objective of the study was to evaluate the performance of total energy expenditure and resting heart rate measures of the Philips health watch. Secondary objectives included the assessment of accuracy of other output parameters of the monitor: heart rate, respiration rate at rest, step count, and activity type recognition...
February 2, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28139173/automatic-diet-monitoring-a-review-of-computer-vision-and-wearable-sensor-based-methods
#10
Hamid Hassannejad, Guido Matrella, Paolo Ciampolini, Ilaria De Munari, Monica Mordonini, Stefano Cagnoni
Food intake and eating habits have a significant impact on people's health. Widespread diseases, such as diabetes and obesity, are directly related to eating habits. Therefore, monitoring diet can be a substantial base for developing methods and services to promote healthy lifestyle and improve personal and national health economy. Studies have demonstrated that manual reporting of food intake is inaccurate and often impractical. Thus, several methods have been proposed to automate the process. This article reviews the most relevant and recent researches on automatic diet monitoring, discussing their strengths and weaknesses...
January 31, 2017: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/28138532/printed-multifunctional-flexible-device-with-an-integrated-motion-sensor-for-health-care-monitoring
#11
Yuki Yamamoto, Shingo Harada, Daisuke Yamamoto, Wataru Honda, Takayuki Arie, Seiji Akita, Kuniharu Takei
Real-time health care monitoring may enable prediction and prevention of disease or improve treatment by diagnosing illnesses in the early stages. Wearable, comfortable, sensing devices are required to allow continuous monitoring of a person's health; other important considerations for this technology are device flexibility, low-cost components and processing, and multifunctionality. To address these criteria, we present a flexible, multifunctional printed health care sensor equipped with a three-axis acceleration sensor to monitor physical movement and motion...
November 2016: Science Advances
https://www.readbyqxmd.com/read/28135594/experiences-of-remote-mood-and-activity-monitoring-in-bipolar-disorder-a-qualitative-study
#12
K E A Saunders, A C Bilderbeck, P Panchal, L Z Atkinson, J R Geddes, G M Goodwin
BACKGROUND: Mobile technology enables high frequency mood monitoring and automated passive collection of data (e.g. actigraphy) from patients more efficiently and less intrusively than has previously been possible. Such techniques are increasingly being deployed in research and clinical settings however little is known about how such approaches are experienced by patients. Here, we explored the experiences of individuals with bipolar disorder engaging in a study involving mood and activity monitoring with a range of portable and wearable technologies...
January 27, 2017: European Psychiatry: the Journal of the Association of European Psychiatrists
https://www.readbyqxmd.com/read/28129141/wearable-devices-for-sports-new-integrated-technologies-allow-coaches-physicians-and-trainers-to-better-understand-the-physical-demands-of-athletes-in-real-time
#13
Dhruv R Seshadri, Colin Drummond, John Craker, James R Rowbottom, James E Voos
Elite-level athletes and professional sports teams are continually searching for opportunities to improve athletic performance and gain a competitive advantage on the field. Advances in technology have provided new avenues to maximize player health and safety. Over the last decade, time?motion analysis systems, such as video recording and computer digitization, have been used to measure human locomotion and improve sports performance. While these techniques were state of the art at the time, their usefulness is inhibited by the questionable validity of the acquired data, the labor-intensive nature of collecting data with manual hand-notation techniques, and their inability to track athlete position, movement, displacement, and velocity...
January 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28128888/a-wearable-hydration-sensor-with-conformal-nanowire-electrodes
#14
Shanshan Yao, Amanda Myers, Abhishek Malhotra, Feiyan Lin, Alper Bozkurt, John F Muth, Yong Zhu
A wearable skin hydration sensor in the form of a capacitor is demonstrated based on skin impedance measurement. The capacitor consists of two interdigitated or parallel electrodes that are made of silver nanowires (AgNWs) in a polydimethylsiloxane (PDMS) matrix. The flexible and stretchable nature of the AgNW/PDMS electrode allows conformal contact to the skin. The hydration sensor is insensitive to the external humidity change and is calibrated against a commercial skin hydration system on an artificial skin over a wide hydration range...
January 27, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28118870/sleep-applications-to-assess-sleep-quality
#15
REVIEW
Ingo Fietze
This article highlights the potential uses that smartphone applications may have for helping those with sleep problems. Applications in smartphones offer the promised possibility of detection of sleep. From the author's own experience, one can also conclude that sleep applications are approximately as good as polysomnography in detection of sleep time, similar to the conventional wearable actimeters. In the future, sleep applications will help to further enhance awareness of sleep health and to distinguish those who actually poorly and only briefly sleep from those who suffer more likely from paradox insomnia...
December 2016: Sleep Medicine Clinics
https://www.readbyqxmd.com/read/28114076/a-multi-technique-reconfigurable-electrochemical-biosensor-enabling-personal-health-monitoring-in-mobile-devices
#16
Alexander Sun, A G Venkatesh, Drew A Hall
This paper describes the design and characterization of a reconfigurable, multi-technique electrochemical biosensor designed for direct integration into smartphone and wearable technologies to enable remote and accurate personal health monitoring. By repurposing components from one mode to the next, the biosensor's potentiostat is able reconfigure itself into three different measurements modes to perform amperometric, potentiometric, and impedance spectroscopic tests all with minimal redundant devices. A [Formula: see text] PCB prototype of the module was developed with discrete components and tested using Google's Project Ara modular smartphone...
September 26, 2016: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28113439/wearable-noncontact-armband-for-mobile-ecg-monitoring-system
#17
Vega Pradana Rachim, Wan-Young Chung
One of the best ways to obtain health information is from an electrocardiogram (ECG). Through an ECG, characteristics such as patients' heartbeats, heart conditions, and heart disease can be analyzed. Unfortunately, most available healthcare devices do not provide clinical data such as information regarding patients' heart activities. Many researchers have tried to solve this problem by inventing wearable heart monitoring systems with a chest strap or wristband, but their performances were not feasible for practical applications...
May 18, 2016: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28113209/dynamic-computation-offloading-for-low-power-wearable-health-monitoring-systems
#18
Haik Kalantarian, Costas Sideris, Bobak Mortazavi, Nabil Alshurafa, Majid Sarrafzadeh
OBJECTIVE: The objective of our work is to describe and evaluate an algorithm to reduce power usage and increase battery lifetime for wearable health-monitoring devices. METHODS: We describe a novel dynamic computation offloading scheme for real-time wearable health monitoring devices that adjusts the partitioning of data processing between the wearable device and mobile application as a function of desired classification accuracy. RESULTS: By making the correct offloading decision based on current system parameters, we show that we are able to reduce system power by as much as 20%...
May 18, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28113198/a-novel-framework-for-motion-tolerant-instantaneous-heart-rate-estimation-by-phase-domain-multi-view-dynamic-time-warping
#19
Qingxue Zhang, Dian Zhou, Xuan Zeng
OBJECTIVE: Long-term wearable instantaneous heart rate (IHR) monitoring is essential to enable pervasive heart health and fitness management. In this paper, a novel framework is proposed to robustly estimate the IHR from electrocardiogram (ECG) signals corrupted by large amounts of daily motion artifacts, which are one of the major impediments against the long-term IHR monitoring. METHODS: The corrupted ECG signals are firstly projected to a high-dimensional phase space, where the constructed phase portraits of heartbeats are of many new geometrical properties and are expected to be powerful patterns more immune to the motion artifacts...
December 15, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28113176/a-multi-technique-reconfigurable-electrochemical-biosensor-enabling-personal-health-monitoring-in-mobile-devices
#20
Alexander Sun, A G Venkatesh, Drew A Hall
This paper describes the design and characterization of a reconfigurable, multi-technique electrochemical biosensor designed for direct integration into smartphone and wearable technologies to enable remote and accurate personal health monitoring. By repurposing components from one mode to the next, the biosensor's potentiostat is able reconfigure itself into three different measurements modes to perform amperometric, potentiometric, and impedance spectroscopic tests all with minimal redundant devices. A [Formula: see text] PCB prototype of the module was developed with discrete components and tested using Google's Project Ara modular smartphone...
October 2016: IEEE Transactions on Biomedical Circuits and Systems
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