Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 3.998
Filtrar
1.
Medicine (Baltimore) ; 99(10): e19124, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32150053

RESUMEN

Many smartphone users experience pain in the thumb/wrist. This pain can be due to certain types of hand injuries as well as inflammation of the extensor pollicis brevis and the abductor pollicis longus tendon sheaths, known as De Quervain tenosynovitis. The objective of this study was to evaluate the association between smartphone addiction and wrist/thumb pain and to determine the severity of the pain, as well as to calculate the prevalence of De Quervain tenosynovitis among medical students at King Abdulaziz University (KAU) in Jeddah.A total of 387 medical students were enrolled. The smartphone addiction scale-short version (SAS-SV) was used to divide participants into the smartphone addict group and non-addict group. Both groups completed the self-administered patient-rated wrist and hand evaluation (PRWHE) questionnaire to evaluate wrist/hand pain. The Finkelstein test was administered to those who reported pain in the thumb/wrist.Two hundred fifty-seven (66.4%) participants were smartphone addicts; 74 (19.1%) had a positive Finkelstein test. There was a significant correlation between smartphone addiction and high PRWHE scores (P = .036).Our study found the prevalence of smartphones addiction among university students to be high (66%), furthermore a correlation between heavy smartphones usage and hand pain was found which indicates that heavy usage of these devices can cause subclinical effects on the human hand.


Asunto(s)
Conducta Adictiva/epidemiología , Conducta Adictiva/fisiopatología , Dolor/etiología , Teléfono Inteligente , Pulgar/fisiopatología , Muñeca/fisiopatología , Estudios Transversales , Enfermedad de De Quervain/epidemiología , Enfermedad de De Quervain/etiología , Humanos , Dolor/epidemiología , Dimensión del Dolor , Prevalencia , Arabia Saudita/epidemiología , Estudiantes de Medicina
2.
Recenti Prog Med ; 111(3): 125-126, 2020 03.
Artículo en Italiano | MEDLINE | ID: mdl-32157257

RESUMEN

Oral cancer drugs often pose problems with proper intake and adequate compliance with treatment. In the age of electronic devices, it is appropriate to try and use technology to optimize drug intake and, potentially, the outcome.


Asunto(s)
Antineoplásicos , Aplicaciones Móviles , Neoplasias , Teléfono Inteligente , Humanos
3.
Stud Health Technol Inform ; 268: 45-59, 2020 Mar 02.
Artículo en Inglés | MEDLINE | ID: mdl-32141878

RESUMEN

Accurate assessment of postural balance is necessary to identify and measure falls risk, inform clinical practice, determine efficacy of treatment and ultimately falls prevention. The aim of this scoping review was to identify gaps and inform practice, research and policy. There are a multitude of technologies available for assessing balance and no one that meets the requirements of every situation. Force plates had provided the gold standard technology for measuring centre of pressure variables as the cornerstone of balance assessment. Inertial measurements units are now considered as valid and reliable, however inertial sensors in smartphone require further refinement to measure with the same degree of accuracy. Fusion systems combine wearable and non-wearable technology in formal gait labs but also gaming. The flexibility provided choice of wearable, non-wearable and fusion systems meets most clinical and research requirements.


Asunto(s)
Balance Postural , Teléfono Inteligente , Accidentes por Caídas , Marcha , Humanos
4.
Medicine (Baltimore) ; 99(11): e19513, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32176099

RESUMEN

A good mobile phone design may increase the productivity of users, as well as their comfort. To achieve mobile users' satisfaction, there is a need to come up with an ideal measurement that would not strain the human's body parts used to control the devices.To investigate the correlation between smartphone and hand anthropometry measurements and the development of hand discomfort and pain.89 Ahlia University students between the ages of 17- and 30-year-old participated in this study. Participants completed a demographic data sheet and had both of their hand dimensions and grip strength measured.A total number of 89 participants were recruited in this study with (57.3%) females and (42.7%) males. 38% have had hand pain recently while 61.8% did not experience any hand pain. There was weak negative correlation between the phone size (r = -0.04, P = .7), hand size (r = -0.08, P = .5), and the hand grip strength (r = -0.03, P = .7) all with the reporting of hand pain. For the phone screen size and the hand lengths (r = 0.22, P = .13) there was weak positive correlation.Mobile phone manufacturers should take into account the users' comfort when designing their phones as this could lead to hand pain and other musculoskeletal problems. Furthermore, hand pain is multifactorial so hand size; phone size and grip strength may be taken into account.


Asunto(s)
Antropometría , Traumatismos de la Mano/etiología , Fuerza de la Mano , Dolor/etiología , Teléfono Inteligente , Adolescente , Adulto , Estudios Transversales , Femenino , Traumatismos de la Mano/fisiopatología , Humanos , Masculino , Dolor/fisiopatología , Dimensión del Dolor , Valores de Referencia , Adulto Joven
5.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi ; 37(1): 150-157, 2020 Feb 25.
Artículo en Chino | MEDLINE | ID: mdl-32096389

RESUMEN

In order to solve the saturation distortion phenomenon of R component in fingertip video image, this paper proposes an iterative threshold segmentation algorithm, which adaptively generates the region to be detected for the R component, and extracts the human pulse signal by calculating the gray mean value of the region to be detected. The original pulse signal has baseline drift and high frequency noise. Combining with the characteristics of pulse signal, a zero phase digital filter is designed to filter out noise interference. Fingertip video images are collected on different smartphones, and the region to be detected is extracted by the algorithm proposed in this paper. Considering that the fingertip's pressure will be different during each measurement, this paper makes a comparative analysis of pulse signals extracted under different pressures. In order to verify the accuracy of the algorithm proposed in this paper in heart rate detection, a comparative experiment of heart rate detection was conducted. The results show that the algorithm proposed in this paper can accurately extract human heart rate information and has certain portability, which provides certain theoretical help for further development of physiological monitoring application on smartphone platform.


Asunto(s)
Algoritmos , Dedos/diagnóstico por imagen , Frecuencia Cardíaca , Monitoreo Fisiológico , Teléfono Inteligente , Humanos , Aplicaciones Móviles , Procesamiento de Señales Asistido por Computador
6.
J Sports Sci ; 38(6): 710-716, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32079484

RESUMEN

The purpose of this study was to investigate the validity of a smartphone app to measure biomechanical barbell parameters during the snatch. Ten collegiate NCAA division I athletes performed two repetitions each at 40, 50, 60, 70, and 80% of their 1-repetition maximum snatch. Barbell motions were simultaneously recorded with a motion capture system and the smartphone app. The motion capture system recorded the 3-D position of a reflective marker attached to the end of the barbell while the smartphone app was used to record sagittal plane video and track the shape of the weight plate from which the barbell center was derived. Peak forward (PFD) and backward (PBD) displacements and peak vertical displacement (PVD) and velocity (PVV) were calculated from both sets of data. Significant, strong to very strong Pearson's product-moment correlation coefficients between both systems were noted for all parameters (r = 0.729-0.902, all p < 0.001). Small significant biases between systems were observed for PVD (ES = 0.284, p < 0.001) and PFD (ES=0.340, p < 0.01), while trivial to small, non-significant biases were observed for PBD (ES = 0.143) and PVV (ES = -0.100). Collectively, the results suggest that the app can provide biomechanical data of barbell motions similar to a 3-D motion capture system.


Asunto(s)
Rendimiento Atlético/fisiología , Teléfono Inteligente , Validación de Programas de Computación , Levantamiento de Peso/fisiología , Fenómenos Biomecánicos , Humanos , Reproducibilidad de los Resultados , Estudios de Tiempo y Movimiento , Adulto Joven
9.
BMJ ; 368: m127, 2020 02 10.
Artículo en Inglés | MEDLINE | ID: mdl-32041693

RESUMEN

OBJECTIVE: To examine the validity and findings of studies that examine the accuracy of algorithm based smartphone applications ("apps") to assess risk of skin cancer in suspicious skin lesions. DESIGN: Systematic review of diagnostic accuracy studies. DATA SOURCES: Cochrane Central Register of Controlled Trials, MEDLINE, Embase, CINAHL, CPCI, Zetoc, Science Citation Index, and online trial registers (from database inception to 10 April 2019). ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Studies of any design that evaluated algorithm based smartphone apps to assess images of skin lesions suspicious for skin cancer. Reference standards included histological diagnosis or follow-up, and expert recommendation for further investigation or intervention. Two authors independently extracted data and assessed validity using QUADAS-2 (Quality Assessment of Diagnostic Accuracy Studies 2 tool). Estimates of sensitivity and specificity were reported for each app. RESULTS: Nine studies that evaluated six different identifiable smartphone apps were included. Six verified results by using histology or follow-up (n=725 lesions), and three verified results by using expert recommendations (n=407 lesions). Studies were small and of poor methodological quality, with selective recruitment, high rates of unevaluable images, and differential verification. Lesion selection and image acquisition were performed by clinicians rather than smartphone users. Two CE (Conformit Europenne) marked apps are available for download. SkinScan was evaluated in a single study (n=15, five melanomas) with 0% sensitivity and 100% specificity for the detection of melanoma. SkinVision was evaluated in two studies (n=252, 61 malignant or premalignant lesions) and achieved a sensitivity of 80% (95% confidence interval 63% to 92%) and a specificity of 78% (67% to 87%) for the detection of malignant or premalignant lesions. Accuracy of the SkinVision app verified against expert recommendations was poor (three studies). CONCLUSIONS: Current algorithm based smartphone apps cannot be relied on to detect all cases of melanoma or other skin cancers. Test performance is likely to be poorer than reported here when used in clinically relevant populations and by the intended users of the apps. The current regulatory process for awarding the CE marking for algorithm based apps does not provide adequate protection to the public. SYSTEMATIC REVIEW REGISTRATION: PROSPERO CRD42016033595.


Asunto(s)
Dermoscopía/métodos , Melanoma/diagnóstico , Aplicaciones Móviles , Neoplasias Cutáneas/diagnóstico , Teléfono Inteligente , Algoritmos , Biopsia , Dermoscopía/instrumentación , Reacciones Falso Negativas , Reacciones Falso Positivas , Humanos , Melanoma/patología , Reproducibilidad de los Resultados , Medición de Riesgo/métodos , Piel/diagnóstico por imagen , Piel/patología , Neoplasias Cutáneas/patología
11.
Anal Bioanal Chem ; 412(7): 1573-1583, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31932862

RESUMEN

We report a smartphone-paper-based sensor impregnated with cetyltrimethylammonium bromide modified silver nanoparticles (AgNPs/CTAB) for determination of Fe3+ in water and blood plasma samples. The methodology for determination of Fe3+ is based on the change in signal intensity of AgNPs/CTAB fabricated on a paper substrate after the deposition of analyte, using a smartphone followed by processing with ImageJ software. The mechanism of sensing for detection and determination of Fe3+ is based on the discoloration of AgNPs which impregnated the paper substrate. The discoloration is attributed to the electron transfer reaction taking place on the surface of NPs in the presence of CTAB. Fe3+ was determined when the paper was impregnated with 1 mM AgNPs for 5 min of reaction time and the substrate was kept under acidic conditions. The linear range for determination of total iron in terms of Fe3+ was 50-900 µg L-1 with a limit of determination (LOD) of 20 µg L-1 and coefficient of variation (CV) of 3.2%. The good relative recovery of 91.3-95.0% and interference studies showed the selectivity of the method for determination of total iron in water and blood plasma samples. Smartphone-paper-based sensors have advantages of simplicity, rapidity, user-friendliness, low cost, and miniaturization of the method for on-site determination of total iron compared to methods that require sophisticated analytical instruments. Graphical abstract Smartphone-paper-based sensor with cetyltrimethylammonium bromide modified silver nanoparticles for determination of Fe3+ in water and blood plasma samples.


Asunto(s)
Hierro/análisis , Hierro/sangre , Papel , Teléfono Inteligente , Agua/química , Límite de Detección
12.
Biomed Instrum Technol ; 54(1): 22-27, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-31961735

RESUMEN

Smartphones increasingly are used to facilitate the delivery of healthcare. Earlier studies assessing patient perceptions on smartphone use were performed before the emergence of broad clinical mobility platforms, and these studies did not distinguish potential differences related to smartphone device types. The current study evaluated the perceptions of neonatal intensive care unit parents on two different smartphone devices (personal phone and industrial phone) in the setting of an established clinical mobility platform. A total of 59 parents completed a multiple-choice survey exploring respondents' beliefs regarding whether smartphones could help care for their child, concerns regarding privacy/security, and perceived functionality of each smartphone. For both devices, most participants believed that smartphones were clearly used to help in the care of their child. However, respondents reported greater comfort with the industrial phone (P < 0.05). Respondents were more likely to express concern that the personal phone could compromise their child's personal/private information (P < 0.05). Respondents were more likely to believe that the industrial phone could receive emergency alerts/alarms compared with the personal phone (P < 0.05). Parental perceptions of smartphones generally were positive; however, perceived differences were found between devices, and smartphone functionality was underestimated. This suggested that education interventions addressing the value of smartphones for clinical mobility are warranted.


Asunto(s)
Teléfono Inteligente , Niño , Humanos , Padres , Encuestas y Cuestionarios
13.
J Sports Sci ; 38(5): 552-558, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-31941416

RESUMEN

The objective of this study was to analyse the effect of the use of social networks in smartphones or playing video games on the passing decision-making performance in professional soccer athletes. Participants were 25 male professional soccer athletes (mean ± SD: age 23.4 ± 2.8 years). The participants performed three randomised conditions divided into three groups: control (CON), smartphone (SMA), and video game (VID). Before and after each experimental condition, the Stroop Task assessed the level of induced mental fatigue. Then, the athletes performed a simulated soccer match. A CANON® camera recorded the matches for further analysis on passing decision-making performance. A group effect was identified (p < .01) with impairment on passing decision-making performance for the SMA (p = .01, ES = 0.5) and VID (p = .01, ES = 0.5) conditions. We concluded that the use of social networks on smartphones and/or playing video games right before official soccer matches might impair the passing decision-making performance in professional soccer athletes.


Asunto(s)
Toma de Decisiones , Teléfono Inteligente , Fútbol/psicología , Juegos de Video , Adulto , Rendimiento Atlético , Estudios Cruzados , Humanos , Masculino , Redes Sociales en Línea , Estado de Hidratación del Organismo/fisiología , Distribución Aleatoria , Fútbol/fisiología , Test de Stroop , Adulto Joven
15.
Isr Med Assoc J ; 22(1): 37-42, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31927804

RESUMEN

BACKGROUND: There is a need for standardized and objective methods to measure postural instability (PI) and gait dysfunction in Parkinson's disease (PD) patients. Recent technological advances in wearable devices, including standard smartphones, may provide such measurements. OBJECTIVES: To test the feasibility of smartphones to detect PI during the Timed Up and Go (TUG) test. METHODS: Ambulatory PD patients, divided by item 30 (postural stability) of the motor Unified Parkinson's Disease Rating Scale (UPDRS) to those with a normal (score = 0, PD-NPT) and an abnormal (score ≥ 1, PD-APT) test and a group of healthy controls (HC) performed a 10-meter TUG while motion sensor data was recorded from a smartphone attached to their sternum using the EncephaLog application. RESULTS: In this observational study, 44 PD patients (21 PD-NPT and 23 PD-APT) and 22 HC similar in age and gender distribution were assessed. PD-APT differed significantly in all gait parameters when compared to PD-NPT and HC. Significant difference between PD-NPT and HC included only turning time (P < 0.006) and step-to-step correlation (P < 0.05). CONCLUSIONS: While high correlations were found between EncephaLog gait parameters and axial UPDRS items, the pull test was least correlated with EncephaLog measures. Motion sensor data from a smartphone can detect differences in gait and balance measures between PD with and without PI and HC.


Asunto(s)
Enfermedad de Parkinson/diagnóstico , Balance Postural , Teléfono Inteligente , Anciano , Estudios de Casos y Controles , Estudios de Factibilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedad de Parkinson/fisiopatología
16.
Medicine (Baltimore) ; 99(4): e18934, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31977910

RESUMEN

INTRODUCTION: Interventions aimed at addressing subthreshold depression (StD) are important to prevent the onset of major depressive disorder. Our video playback application (SPSRS) is designed to reduce depressive symptoms by presenting positive words in videos, shedding new light on the treatment of StD. However, no randomized controlled trial (RCT) has utilized this video playback application for the treatment of individuals with StD. Therefore, a pilot RCT was designed to determine the feasibility of a full-scale trial. We herein present a study protocol for investigating the utility of a video playback application intervention for individuals with StD. METHODS: This 5-week, single-blind, 2-arm, parallel-group, pilot RCT will determine the effectiveness of the video playback application by comparing individuals who had and had not been exposed to the same. A total of 32 individuals with StD will be randomly assigned to the experimental or control group at a 1:1 ratio. The experimental group will receive a 10-minute intervention containing the video playback application per day, whereas the control group will receive no intervention. The primary outcome will include changes in the Center for Epidemiologic Studies Depression Scale score after the 5-week intervention, while secondary outcomes will include changes in the Kessler Screening Scale for psychological distress and the generalized anxiety disorder 7-item scale score after the 5-week intervention. Statistical analysis using linear mixed models with the restricted maximum likelihood estimation method will then be performed. DISCUSSION: This pilot RCT will have been the first to explore the utility of SPSRS application interventions that display positive words in videos for individuals with StD. The results of this pilot trial are expected to help in the design and implementation of a full-scale RCT that investigates the effects of SPSRS applications among individuals with StD. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04136041.


Asunto(s)
Depresión/terapia , Aplicaciones Móviles , Teléfono Inteligente , Estudios de Factibilidad , Proyectos Piloto , Ensayos Clínicos Controlados Aleatorios como Asunto
17.
Anal Bioanal Chem ; 412(3): 611-620, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31900539

RESUMEN

Infections caused by foodborne microorganisms are a great threat to the global environment and public healthcare today. Thus, rapid, portable and sensitive assays that can realize the identification of foodborne bacteria are highly desired. In this study, a smart fluorescent and colorimetric dual-readout sensing system has been established for simple and rapid E. coli determination by utilizing the Cu2+-triggered oxidation of o-phenylenediamine (OPD). Initially, Cu2+ can oxidize OPD to OPDox, resulting in an orange-yellow fluorescence and visible pale-yellow color. However, E. coli can effectively reduce Cu2+ into Cu+, inhibiting the Cu2+-triggered oxidation of OPD to OPDox. Consequently, the introduction of E. coli can turn off both the fluorescence and the UV-vis absorbance signals of the OPD-Cu2+ system, illustrating an original mechanism for fluorescent and colorimetric dual-channel detection of E. coli. Moreover, a filter paper-based visual sensor was built and coupled with OPD-Cu2+ solution under the assistance of a UV lamp. The as-prepared sensor can detect E. coli quantitatively with the help of a typical smartphone color-scanning application (APP). Thus, this study offers a valid dual-mode assay for sensitive and on-site visible detection of E. coli, guaranteeing the reliability of the results and is more attractive for practical use. Graphical Abstract Schematic illustration of the smartphone-integrated sensing system for fluorescent and colorimetric dual-channel detection of E. coli based on the Cu2+-OPD system.


Asunto(s)
Bacterias/aislamiento & purificación , Colorimetría/métodos , Colorantes Fluorescentes/química , Microbiología de Alimentos , Papel , Teléfono Inteligente , Espectrometría de Fluorescencia/métodos , Integración de Sistemas , Bacterias/patogenicidad , Técnicas Biosensibles , Reproducibilidad de los Resultados , Espectrofotometría Ultravioleta/métodos
18.
Dent Traumatol ; 36(1): 76-78, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-31390477

RESUMEN

Traumatic dental injuries (TDI) have emerged as a significant global public health concern. One major problem which is developing and yet unreported is the incidence of traumatic dental injuries and soft tissue facial trauma due to the inadvertent falling of smartphones on to the face during their use in rest time. This is related to the weight of the smartphones and their excessive use in all parts of the world. This paper aims to highlight this phenomenon as an emerging aetiological factor for dental and facial injuries in children.


Asunto(s)
Traumatismos Faciales , Teléfono Inteligente , Traumatismos de los Dientes , Niño , Traumatismos Faciales/epidemiología , Humanos , Prevalencia , Factores de Riesgo , Traumatismos de los Dientes/epidemiología
20.
Sci Total Environ ; 704: 135349, 2020 Feb 20.
Artículo en Inglés | MEDLINE | ID: mdl-31837870

RESUMEN

Mosquito surveillance remains a cornerstone of pest and disease control operations globally but is strongly limited in scale by resources. The use of citizen science to upscale scientific data collection is commonplace, and mosquito surveillance programs have begun to make use of citizen scientists in several countries, particularly for exotic species detection. Here we report on a proof of concept trial in southern Australia for a citizen science mosquito surveillance program characterised by fixed point trapping with BG GAT devices and remote mosquito identification through emailed images, which we term 'e-entomology'. In a study with 126 participants, we detected mosquito seasonality with peak abundance in mid-summer (1.78 mosquitoes per trap per day), weather correlations (positive correlation with maximum temperature, r = 0.41) and a diversity of species (15 of 22 known species in the region) in a metropolitan setting. Whilst we demonstrated that the costs of a citizen science program is only about 20% of a comparable professional surveillance program, the mosquito community sampled by citizen scientists was biased towards container-inhabiting species, particularly Aedes notoscriptus. This is the first time fixed-point mosquito trapping has been combined with citizen science e-entomology to deliver comprehensive surveillance of urban mosquitoes.


Asunto(s)
Monitoreo del Ambiente/métodos , Control de Mosquitos , Teléfono Inteligente , Aedes , Animales , Recolección de Datos , Entomología , Humanos , Australia del Sur
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA