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https://www.readbyqxmd.com/read/28320676/smartphone-based-rapid-screening-of-urinary-biomarkers
#1
Haakon Karlsen, Tao Dong
An ambulatory pre-screening Point-of-Care (POC) device compatible with commercially available diapers has been developed to rapidly screen urine samples for incontinent or functionally impaired elderly. This POC device consists of a set of colorimetric reaction pads with accompanying reference colors. A smartphone with camera is a convenient tool for analysis of colorimetric assays; and a software application has been developed for smartphones to photograph the colorimetric assay and classify colorimetric reactions according to the reference colors...
April 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28288955/resting-and-postexercise-heart-rate-detection-from-fingertip-and-facial-photoplethysmography-using-a-smartphone-camera-a-validation-study
#2
Bryan P Yan, Christy Ky Chan, Christien Kh Li, Olivia Tl To, William Hs Lai, Gary Tse, Yukkee C Poh, Ming-Zher Poh
BACKGROUND: Modern smartphones allow measurement of heart rate (HR) by detecting pulsatile photoplethysmographic (PPG) signals with built-in cameras from the fingertips or the face, without physical contact, by extracting subtle beat-to-beat variations of skin color. OBJECTIVE: The objective of our study was to evaluate the accuracy of HR measurements at rest and after exercise using a smartphone-based PPG detection app. METHODS: A total of 40 healthy participants (20 men; mean age 24...
March 13, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28281266/a-smartphone-based-colorimetric-reader-for-human-c-reactive-protein-immunoassay
#3
A G Venkatesh, Thomas van Oordt, E Marion Schneider, Roland Zengerle, Felix von Stetten, John H T Luong, Sandeep Kumar Vashist
A smartphone-based colorimetric reader (SBCR), comprising a Samsung Galaxy SIII mini, a gadget (iPAD mini, iPAD4, or iPhone 5s) and a custom-made dark hood and base holder assembly, is used for human C-reactive protein (CRP) immunoassay. A 96-well microtiter plate (MTP) is positioned on the gadget's screensaver to provide white light-based bottom illumination only in the specific regions corresponding to the well's bottom. The images captured by the smartphone's back camera are analyzed by a novel image processing algorithm...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28275604/iphone-4s-and-iphone-5s-imaging-of-the-eye
#4
Maaz Jalil, Sandor R Ferenczy, Carol L Shields
BACKGROUND/AIMS: To evaluate the technical feasibility of a consumer-grade cellular iPhone camera as an ocular imaging device compared to existing ophthalmic imaging equipment for documentation purposes. METHODS: A comparison of iPhone 4s and 5s images was made with external facial images (macrophotography) using Nikon cameras, slit-lamp images (microphotography) using Zeiss photo slit-lamp camera, and fundus images (fundus photography) using RetCam II. RESULTS: In an analysis of six consecutive patients with ophthalmic conditions, both iPhones achieved documentation of external findings (macrophotography) using standard camera modality, tap to focus, and built-in flash...
January 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/28274467/an-iphone-application-for-upper-arm-posture-and-movement-measurements
#5
Liyun Yang, Wilhelmus J A Grooten, Mikael Forsman
There is a need for objective methods for upper arm elevation measurements for accurate and convenient risk assessments. The aims of this study were (i) to compare a newly developed iOS application (iOS) for measuring upper arm elevation and angular velocity with a reference optical tracking system (OTS), and (ii) to compare the accuracy of the iOS incorporating a gyroscope and an accelerometer with using only an accelerometer, which is standard for inclinometry. The iOS-OTS limits of agreement for static postures (9 subjects) were -4...
March 6, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28269056/body-position-classification-for-cardiorespiratory-measurement
#6
Marcel Mlynczak, Martin Berka, Wiktor Niewiadomski, Gerard Cybulski
Heart activity, or at least heart rate variability, is associated with body position. Our previous studies have confirmed that impedance pneumography may be used to record respiratory function, but the calibration coefficients for this method depend on position. Data were collected from 24 students (12 male, 12 female), who alternated positions between lying (on front, back, and right side), sitting and standing. Signals from an attached iPhone's internal sensors (accelerometer, gyroscope, magnetometer) were recorded and attitude relative to gravity was calculated...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268861/implementation-of-a-smartphone-as-a-wireless-gyroscope-platform-for-quantifying-reduced-arm-swing-in-hemiplegie-gait-with-machine-learning-classification-by-multilayer-perceptron-neural-network
#7
Robert LeMoyne, Timothy Mastroianni
Natural gait consists of synchronous and rhythmic patterns for both the lower and upper limb. People with hemiplegia can experience reduced arm swing, which can negatively impact the quality of gait. Wearable and wireless sensors, such as through a smartphone, have demonstrated the ability to quantify various features of gait. With a software application the smartphone (iPhone) can function as a wireless gyroscope platform capable of conveying a gyroscope signal recording as an email attachment by wireless connectivity to the Internet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28246069/-back-on-track-a-mobile-app-observational-study-using-apple-s-researchkit-framework
#8
Martin Zens, Peter Woias, Norbert P Suedkamp, Philipp Niemeyer
BACKGROUND: In March 2015, Apple Inc announced ResearchKit, a novel open-source framework intended to help medical researchers to easily create apps for medical studies. With the announcement of this framework, Apple presented 5 apps built in a beta phase based on this framework. OBJECTIVE: The objective of this study was to better understand decision making in patients with acute anterior cruciate ligament (ACL) ruptures. Here, we describe the development of a ResearchKit app for this study...
February 28, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28227273/body-position-classification-for-cardiorespiratory-measurement
#9
Marcel Mlynczak, Martin Berka, Wiktor Niewiadomski, Gerard Cybulski, Marcel Mlynczak, Martin Berka, Wiktor Niewiadomski, Gerard Cybulski, Marcel Mlynczak, Martin Berka, Gerard Cybulski, Wiktor Niewiadomski
Heart activity, or at least heart rate variability, is associated with body position. Our previous studies have confirmed that impedance pneumography may be used to record respiratory function, but the calibration coefficients for this method depend on position. Data were collected from 24 students (12 male, 12 female), who alternated positions between lying (on front, back, and right side), sitting and standing. Signals from an attached iPhone's internal sensors (accelerometer, gyroscope, magnetometer) were recorded and attitude relative to gravity was calculated...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227059/implementation-of-a-smartphone-as-a-wireless-gyroscope-platform-for-quantifying-reduced-arm-swing-in-hemiplegie-gait-with-machine-learning-classification-by-multilayer-perceptron-neural-network
#10
Robert LeMoyne, Timothy Mastroianni, Robert LeMoyne, Timothy Mastroianni, Robert LeMoyne, Timothy Mastroianni
Natural gait consists of synchronous and rhythmic patterns for both the lower and upper limb. People with hemiplegia can experience reduced arm swing, which can negatively impact the quality of gait. Wearable and wireless sensors, such as through a smartphone, have demonstrated the ability to quantify various features of gait. With a software application the smartphone (iPhone) can function as a wireless gyroscope platform capable of conveying a gyroscope signal recording as an email attachment by wireless connectivity to the Internet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28195576/the-mole-mapper-study-mobile-phone-skin-imaging-and-melanoma-risk-data-collected-using-researchkit
#11
Dan E Webster, Christine Suver, Megan Doerr, Erin Mounts, Lisa Domenico, Tracy Petrie, Sancy A Leachman, Andrew D Trister, Brian M Bot
Sensor-embedded phones are an emerging facilitator for participant-driven research studies. Skin cancer research is particularly amenable to this approach, as phone cameras enable self-examination and documentation of mole abnormalities that may signal a progression towards melanoma. Aggregation and open sharing of this participant-collected data can be foundational for research and the development of early cancer detection tools. Here we describe data from Mole Mapper, an iPhone-based observational study built using the Apple ResearchKit framework...
February 14, 2017: Scientific Data
https://www.readbyqxmd.com/read/28185821/public-response-to-mers-cov-in-the-middle-east-iphone-survey-in-six-countries
#12
Amani S Alqahtani, Harunor Rashid, Mada H Basyouni, Tariq M Alhawassi, Nasser F BinDhim
Gulf Cooperation Council (GCC) countries bear the heaviest brunt of MERS-CoV. This study aims to compare public awareness and practice around MERS-CoV across GCC countries. A cross-sectional survey was conducted using the Gulf Indicators (GI) smartphone app among people in the six GCC countries, namely Saudi Arabia, Kuwait, the United Arab Emirates, Qatar, Bahrain, and Oman. A total of 1812 participants recruited. All were aware of MERS-CoV, yet the perception and practice around MERS-CoV varied widely between countries...
February 6, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28137514/nurse-manager-and-student-nurse-perceptions-of-the-use-of-personal-smartphones-or-tablets-and-the-adjunct-applications-as-an-educational-tool-in-clinical-settings
#13
George McNally, Rosemary Frey, Michael Crossan
Personally owned handheld referencing technology such as smartphones or tablets, and the adjunct applications (apps) that can be used on them, are becoming a part of everyday life for the New Zealand population. In common with the population at large, student nurses have embraced this technology since the advent of the Apple iPhone in 2010. Little is known internationally or in New Zealand about the way student nurses may apply personally owned handheld referencing technology to their education process. The perceptions of New Zealand nurse managers, toward personally owned handheld referencing technology, could not be located...
January 4, 2017: Nurse Education in Practice
https://www.readbyqxmd.com/read/28100441/assessing-the-efficacy-of-an-app-based-method-of-family-planning-the-dot-study-protocol
#14
Rebecca G Simmons, Dominick C Shattuck, Victoria H Jennings
BACKGROUND: Some 222 million women worldwide have unmet needs for contraception; they want to avoid pregnancy, but are not using a contraceptive method, primarily because of concerns about side effects associated with most available methods. Expanding contraceptive options-particularly fertility awareness options that provide women with information about which days during their menstrual cycles they are likely to become pregnant if they have unprotected intercourse-has the potential to reduce unmet need...
January 18, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28097928/validity-and-reliability-of-a-novel-iphone-app-for-the-measurement-of-barbell-velocity-and-1rm-on-the-bench-press-exercise
#15
Carlos Balsalobre-Fernández, David Marchante, Mario Muñoz-López, Sergio L Jiménez
The purpose of this study was to analyse the validity and reliability of a novel iPhone app (named: PowerLift) for the measurement of mean velocity on the bench-press exercise. Additionally, the accuracy of the estimation of the 1-Repetition maximum (1RM) using the load-velocity relationship was tested. To do this, 10 powerlifters (Mean (SD): age = 26.5 ± 6.5 years; bench press 1RM · kg(-1) = 1.34 ± 0.25) completed an incremental test on the bench-press exercise with 5 different loads (75-100% 1RM), while the mean velocity of the barbell was registered using a linear transducer (LT) and Powerlift...
January 18, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28077218/a-person-by-situation-account-of-why-some-people-more-frequently-engage-in-upward-appearance-comparison-behaviors-in-everyday-life
#16
Adam Rogers, Matthew Fuller-Tyszkiewicz, Vivienne Lewis, Isabel Krug, Ben Richardson
Although the influence of stable, trait-like factors (such as trait body dissatisfaction and appearance internalization) on instances of appearance comparison has been well documented, the additive and interactive influence of contextual factors (such as one's current body satisfaction) on comparison behaviors is unknown. Therefore, the present study tested a Person×Situation model in which both state and trait body image variables interacted to predict engagement in various forms of comparison (upward, downward, and lateral)...
January 2017: Behavior Therapy
https://www.readbyqxmd.com/read/28070457/the-concurrent-validity-and-reliability-of-the-leg-motion-system-for-measuring-ankle-dorsiflexion-range-of-motion-in-older-adults
#17
Carlos Romero Morales, César Calvo Lobo, David Rodríguez Sanz, Irene Sanz Corbalán, Beatriz Ruiz Ruiz, Daniel López López
BACKGROUND: New reliable devices for range of motion (ROM) measures in older adults are necessary to improve knowledge about the functional capability in this population. Dorsiflexion ROM limitation is associated with ankle injuries, foot pain, lower limb disorders, loss of balance, gait control disorders and fall risk in older adults. The aim of the present study was to assess the validity and reliability of the Leg Motion device for measuring ankle dorsiflexion ROM in older adults. METHODS: Adescriptive repeated-measures study was designed to test the reliability of Leg Motion in thirty-three healthy elderly patients older than 65 years...
2017: PeerJ
https://www.readbyqxmd.com/read/27965211/gotta-catch-em-all-pok%C3%A3-mon-go-and-physical-activity-among-young-adults-difference-in-differences-study
#18
Katherine B Howe, Christian Suharlim, Peter Ueda, Daniel Howe, Ichiro Kawachi, Eric B Rimm
OBJECTIVE:  To estimate the effect of playing Pokémon GO on the number of steps taken daily up to six weeks after installation of the game. DESIGN:  Cohort study using online survey data. PARTICIPANTS:  Survey participants of Amazon Mechanical Turk (n=1182) residing in the United States, aged 18 to 35 years and using iPhone 6 series smartphones. MAIN OUTCOME MEASURES:  Number of daily steps taken each of the four weeks before and six weeks after installation of Pokémon GO, automatically recorded in the "Health" application of the iPhone 6 series smartphones and reported by the participants...
December 13, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27955929/ten-thousand-steps-a-pedometer-study-of-junior-dentists-in-a-major-british-teaching-hospital-and-a-district-general-hospital
#19
R M Keat, M Thomas, A McKechnie
Sedentary behaviour is widely associated with deleterious health outcomes that in modern medicine have similar connotations to smoking tobacco and alcohol misuse. The integration of e-portfolio, e-logbook, British National Formulary (BNF) and encrypted emails has made smartphones a necessity for trainees. Smartphones also have the ability to record the amount of exercise taken, which allows activity at work to be monitored. The aim of this study to compare the activity of the same group of dental core trainees when they worked within a large multisite teaching hospital and a smaller district general hospital, to find out if supplementary activity was needed outside work...
December 9, 2016: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/27924670/safety-of-iphone-retinal-photography
#20
Sheng Chiong Hong, Giles Wynn-Williams, Graham Wilson
BACKGROUND: With the advancement in mobile technology, smartphone retinal photography is becoming a popular practice. However, there is limited information about the safety of the latest smartphones used for retinal photography. AIMS: This study aims to determine the photobiological risk of iPhone 6 and iPhone 6 plus when used in conjunction with a 20Diopter condensing lens for retinal photography. METHOD: iPhone 6 and iPhone 6 plus (Apple, Cupertino, CA) were used in this study...
April 2017: Journal of Medical Engineering & Technology
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