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https://www.readbyqxmd.com/read/29141837/user-acceptance-of-wrist-worn-activity-trackers-among-community-dwelling-older-adults-mixed-method-study
#1
Arjun Puri, Ben Kim, Olivier Nguyen, Paul Stolee, James Tung, Joon Lee
BACKGROUND: Wearable activity trackers are newly emerging technologies with the anticipation for successfully supporting aging-in-place. Consumer-grade wearable activity trackers are increasingly ubiquitous in the market, but the attitudes toward, as well as acceptance and voluntary use of, these trackers in older population are poorly understood. OBJECTIVE: The aim of this study was to assess acceptance and usage of wearable activity trackers in Canadian community-dwelling older adults, using the potentially influential factors as identified in literature and technology acceptance model...
November 15, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29060796/ppg-pulse-direction-determination-algorithm-for-ppg-waveform-inversion-by-wrist-rotation
#2
Changmok Choi, Byung-Hoon Ko, Jongwook Lee, Seung Keun Yoon, Uikun Kwon, Sang Joon Kim, Younho Kim
This paper describes photoplethysmography (PPG)-based pulse direction determination algorithm on a site of the radial artery using a wrist band. It has been well known that PPG is susceptible to noise and motion artifacts in the mobile environment and many research efforts have been made to focus on rejection of the noise and motion artifacts. However, no research has been performed to find PPG pulses when PPG is inverted by wrist movement. We present an algorithm, which accurately yields which direction PPG pulses face regardless of wrist movement...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29059822/a-novel-method-for-accurate-estimation-of-hrv-from-smartwatch-ppg-signals
#3
Tanmoy Bhowmik, Jishnu Dey, Vijay Narayan Tiwari
Photoplethysmography(PPG) as a non-invasive tool for monitoring various cardiovascular parameters, has become popular due to the ease of wearable integration and pervasive nature. Due to unobtrusive nature of sensor placement at wrist, smartwatches and wrist based fitness bands have gained popularity. However, any movement of the wrist along with frequent loose contacts significantly corrupts the PPG signal. Reliable peak detection from the corrupted PPG signal is essential for any further processing, as many physiological quantities such as heart rate variability (HRV) depends on the peak-to-peak distances in the PPG signal, known as the RR Series...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29019964/building-iot-services-for-aging-in-place-using-standard-based-iot-platforms-and-heterogeneous-iot-products
#4
Sheik Mohammad Mostakim Fattah, Nak-Myoung Sung, Il-Yeup Ahn, Minwoo Ryu, Jaeseok Yun
An aging population and human longevity is a global trend. Many developed countries are struggling with the yearly increasing healthcare cost that dominantly affects their economy. At the same time, people living with old adults suffering from a progressive brain disorder such as Alzheimer's disease are enduring even more stress and depression than those patients while caring for them. Accordingly, seniors' ability to live independently and comfortably in their current home for as long as possible has been crucial to reduce the societal cost for caregiving and thus give family members peace of mind, called 'aging in place' (AIP)...
October 11, 2017: Sensors
https://www.readbyqxmd.com/read/28979208/sedentary-behavior-among-national-elite-rowers-during-off-training-a-pilot-study
#5
Billy Sperlich, Martin Becker, Andreas Hotho, Birgit Wallmann-Sperlich, Mahdi Sareban, Kay Winkert, Jürgen M Steinacker, Gunnar Treff
The aim of this pilot study was to analyze the off-training physical activity (PA) profile in national elite German U23 rowers during 31 days of their preparation period. The hours spent in each PA category (i.e., sedentary: <1.5 metabolic equivalents (MET); light physical activity: 1.5-3 MET; moderate physical activity: 3-6 MET and vigorous intense physical activity: >6 MET) were calculated for every valid day (i.e., >480 min of wear time). The off-training PA during 21 weekdays and 10 weekend days of the final 11-week preparation period was assessed by the wrist-worn multisensory device Microsoft Band II (MSBII)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28938980/the-use-of-short-term-acupressure-to-prevent-long-term-ponv-was-this-a-case-of-too-little-too-late
#6
Rebecca T Gilbert, Nancy Farish, Eleanor Bergland, Mark Conaway, Jill Hance, Susan Ketcham, Lisa Letzkus, Marie Manz, Kathy Podgorski, Beth Quatrara, Ruth Ryman, Anika Spry
PURPOSE: Postoperative nausea and vomiting (PONV) is a common surgical complication that contributes to poor patient outcomes. The purpose of this study was to determine if acupressure to the P6 pressure point during the immediate postoperative period decreased PONV for the first 24 postoperative hours. DESIGN: This was a double-blind, randomized study. METHODS: Experimental group participants wore a wristband, which administered acupressure to the P6 pressure point of one wrist...
October 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28932987/effects-of-hand-configuration-on-muscle-force-coordination-co-contraction-and-concomitant-intermuscular-coupling-during-maximal-isometric-flexion-of-the-fingers
#7
Camille Charissou, David Amarantini, Robin Baurès, Eric Berton, Laurent Vigouroux
PURPOSE: The mechanisms governing the control of musculoskeletal redundancy remain to be fully understood. The hand is highly redundant, and shows different functional role of extensors according to its configuration for a same functional task of finger flexion. Through intermuscular coherence analysis combined with hand musculoskeletal modelling during maximal isometric hand contractions, our aim was to better understand the neural mechanisms underlying the control of muscle force coordination and agonist-antagonist co-contraction...
November 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28883892/impact-of-post-meal-and-one-time-daily-exercise-in-patient-with-type-2-diabetes-mellitus-a-randomized-crossover-study
#8
Daizy Pahra, Nitasha Sharma, Sandhya Ghai, Abhishek Hajela, Shobhit Bhansali, Anil Bhansali
BACKGROUND: To evaluate the effectiveness of short-timed post-meal and one-time daily exercise on glycemic control in patients with T2DM. METHODS: Sixty-four T2DM patients were randomised into crossover design. Group A (n = 32) underwent post-meal exercise (moderate-intensity brisk walking covering 1500-1600 steps for 15 min, starting 15 min after each meal) from d1 to d60 followed by one-time daily exercise (45 min pre-breakfast brisk walking at stretch covering 4500-4800 steps) from d61 to d120, while it was vice versa for the group B (n = 32)...
2017: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/28868605/development-of-digastric-muscles-in-human-fetuses-a-review-and-findings-in-the-flexor-digitorum-superficialis-muscle
#9
José Francisco Rodríguez-Vázquez, Zhe Wu Jin, Peng Zhao, Gen Murakami, Xiang Wu Li, Yu Jin
The digastricus and omohyoideus muscles are digastric muscles with two muscle bellies. An insertion tendon of the posterior belly becomes an intermediate tendon in digastricus muscles, whereas a single band-like muscle in omohyoideus muscles may later be interrupted by an intermediate tendon, possibly due to muscle cell death caused by mechanical stress. In human fetuses, an intermediate tendon provides the temporal origins of the tensor veli palatini and tensor tympani muscles. Some reptiles, including snakes, carry multiple series of digastric-like axial muscles, in which each intersegmental septum is likely to become an intermediate tendon...
September 4, 2017: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/28843679/phase-coherence-classification-a-new-wavelet-based-method-to-separate-local-field-potentials-into-local-in-coherent-and-volume-conducted-components
#10
M von Papen, H Dafsari, E Florin, F Gerick, L Timmermann, J Saur
BACKGROUND: Local field potentials (LFP) reflect the integrated electrophysiological activity of large neuron populations and may thus reflect the dynamics of spatially and functionally different networks. NEW METHOD: We introduce the wavelet-based phase-coherence classification (PCC), which separates LFP into volume-conducted, local incoherent and local coherent components. It allows to compute power spectral densities for each component associated with local or remote electrophysiological activity...
November 1, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28836682/millimeter-wave-emissivity-as-a-metric-for-the-non-contact-diagnosis-of-human-skin-conditions
#11
Amani Yousef Owda, Neil Salmon, Stuart William Harmer, Sergiy Shylo, Nicholas John Bowring, Nacer Ddine Rezgui, Mamta Shah
A half-space electromagnetic model of human skin over the band 30-300 GHz was constructed and used to model radiometric emissivity. The model showed that the radiometric emissivity rose from 0.4 to 0.8 over this band, with emission being localized to a layer approximately one millimeter deep in the skin. Simulations of skin with differing water contents associated with psoriasis, eczema, malignancy, and thermal burn wounds indicated radiometry could be used as a non-contact technique to detect and monitor these conditions...
October 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28813141/weavable-conductive-yarn-based-nico-zn-textile-battery-with-high-energy-density-and-rate-capability
#12
Yan Huang, Wing Shan Ip, Yuen Ying Lau, Jinfeng Sun, Jie Zeng, Nga Sze Sea Yeung, Wing Sum Ng, Hongfei Li, Zengxia Pei, Qi Xue, Yukun Wang, Jie Yu, Hong Hu, Chunyi Zhi
With intrinsic safety and much higher energy densities than supercapacitors, rechargeable nickel/cobalt-zinc-based textile batteries are promising power sources for next generation personalized wearable electronics. However, high-performance wearable nickel/cobalt-zinc-based batteries are rarely reported because there is a lack of industrially weavable and knittable highly conductive yarns. Here, we use scalably produced highly conductive yarns uniformly covered with zinc (as anode) and nickel cobalt hydroxide nanosheets (as cathode) to fabricate rechargeable yarn batteries...
September 26, 2017: ACS Nano
https://www.readbyqxmd.com/read/28763373/comparison-of-two-radiological-methods-in-the-determination-of-skeletal-maturity-in-the-indian-pediatric-population
#13
Swapnil M Keny, Dhiraj V Sonawane, Eknath Pawar, Akash A Saraogi, Vikram Singh, Feroz Khan, Pravin P Bande, Ajay Chandanwale
To determine a more precise and reliable method between Greulich-Pyle (GP) and MacKay's (MK) method for the determination of skeletal age in an Indian pediatric population. We carried out a cross sectional study for the assessment of skeletal age on the basis of examination of hand and wrist radiographs of 106 patients (1-15 years of age) who presented with soft tissue injury to hand by the GP and the MK method. These radiographs were evaluated by a radiologist and an orthopedic surgeon independently. In girls, the mean age difference between chronological and skeletal age was 8 months by the GP method, whereas it was 17 months by MK method...
July 31, 2017: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/28751169/differences-in-laser-doppler-indices-between-skin-surface-measurement-sites-in-subjects-with-diabetes
#14
Hsin Hsiu, Hsiao-Feng Hu, Hung-Chi Tsai
This study performed laser-Doppler flowmetry (LDF) measurements with the aim of identifying differences in diabetes-induced microcirculatory-blood-flow (MBF) responses between the following skin surface measurement sites: an acupoint around the wrist, an acupoint around the ankle, and a nearby nonacupoint around the ankle. The 67 study subjects were assigned to diabetic, prediabetic, and healthy groups according to the results of oral glucose tolerance tests. Beat-to-beat and spectral analyses were applied to the LDF waveform to obtain the foot delay time (FDT), the flow rise time (FRT), and the relative energy contributions (RECs) in five frequency bands...
July 25, 2017: Microvascular Research
https://www.readbyqxmd.com/read/28742045/a-multi-class-tactile-brain-computer-interface-based-on-stimulus-induced-oscillatory-dynamics
#15
Lin Yao, Mei Lin Chen, Xinjun Sheng, Natalie Mrachacz-Kersting, Xiangyang Zhu, Dario Farina, Ning Jiang
We proposed a multi-class tactile brain-computer interface that utilizes stimulus-induced oscillatory dynamics. It was hypothesized that somatosensory attention can modulate tactile induced oscillation changes, which can decode different sensation attention tasks. Subjects performed four tactile attention tasks, prompted by cues presented in random order and while both wrists were simultaneously stimulated: 1) selective sensation on left hand (SS-L), 2) selective sensation on right hand (SS-R), 3) bilateral selective sensation (SS-B), and 4) selective sensation suppressed or idle state (SS-S)...
July 24, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28706550/effect-of-acupressure-on-early-complications-of-menopause-in-women-referring-to-selected-health-care-centers
#16
Maryam Armand, Gity Ozgoli, Reza Heshmat Giti, Hamid Alavi Majd
BACKGROUND: Menopausal period is accompanied by numerous disorders and complications. Nowadays, hormone therapy is the most effective existing method to treat these complications, but many women cannot undergo that due to the known potentiality of risk. So, the present study aimed to investigate the effect of acupressure on early complications of menopause. MATERIALS AND METHODS: This is a blind random clinical trial conducted on 70 menopaused women referring to selected health care centers in Tehran who were qualified to enter the study...
May 2017: Iranian Journal of Nursing and Midwifery Research
https://www.readbyqxmd.com/read/28659752/electrocorticographic-temporal-alteration-mapping-a-clinical-technique-for-mapping-the-motor-cortex-with-movement-related-cortical-potentials
#17
Zehan Wu, Tao Xie, Lin Yao, Dingguo Zhang, Xinjun Sheng, Dario Farina, Liang Chen, Ying Mao, Xiangyang Zhu
We propose electrocorticographic temporal alteration mapping (ETAM) for motor cortex mapping by utilizing movement-related cortical potentials (MRCPs) within the low-frequency band [0.05-3] Hz. This MRCP waveform-based temporal domain approach was compared with the state-of-the-art electrocorticographic frequency alteration mapping (EFAM), which is based on frequency spectrum dynamics. Five patients (two epilepsy cases and three tumor cases) were enrolled in the study. Each patient underwent intraoperative direct electrocortical stimulation (DECS) procedure for motor cortex localization...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28654423/daily-wrist-activity-classification-using-a-smart-band
#18
Nhan Duc Nguyen, Phuc Huu Truong, Gu-Min Jeong
OBJECTIVE: In this letter, we propose a novel method for classifying daily wrist activities by using a smart band. APPROACH: Triaxial acceleration data are collected by built-in sensors of the smart band during experiments regarding five activities, i.e. texting, calling, placing a hand in a pocket, carrying a suitcase, and swinging a hand. We analyze patterns in the sensor signals during these activities based on three types of features, i.e. norm, norm-variance, and frequency-domain features...
August 18, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28538708/accuracy-in-wrist-worn-sensor-based-measurements-of-heart-rate-and-energy-expenditure-in-a-diverse-cohort
#19
Anna Shcherbina, C Mikael Mattsson, Daryl Waggott, Heidi Salisbury, Jeffrey W Christle, Trevor Hastie, Matthew T Wheeler, Euan A Ashley
The ability to measure physical activity through wrist-worn devices provides an opportunity for cardiovascular medicine. However, the accuracy of commercial devices is largely unknown. The aim of this work is to assess the accuracy of seven commercially available wrist-worn devices in estimating heart rate (HR) and energy expenditure (EE) and to propose a wearable sensor evaluation framework. We evaluated the Apple Watch, Basis Peak, Fitbit Surge, Microsoft Band, Mio Alpha 2, PulseOn, and Samsung Gear S2. Participants wore devices while being simultaneously assessed with continuous telemetry and indirect calorimetry while sitting, walking, running, and cycling...
May 24, 2017: Journal of Personalized Medicine
https://www.readbyqxmd.com/read/28527545/comparing-effects-of-two-different-types-of-nei-guan-acupuncture-stimulation-devices-in-reducing-postoperative-nausea-and-vomiting
#20
Hanna Oh, Bo Hwan Kim
PURPOSE: To compare the effects of a relief band using transcutaneous electrical nerve stimulation with a wrist band using acupressure on the Nei-Guan acupuncture point to relieve postoperative nausea and vomiting (PONV) in patients who had undergone gynecologic surgery. DESIGN: A double-blinded randomized controlled trial. METHODS: In total, 54 patients scheduled for gynecologic surgery under general anesthesia were included in this study...
June 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
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