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https://www.readbyqxmd.com/read/27919716/postoperative-cardiac-ischemia-detection-by-continuous-12-lead-electrocardiographic-monitoring-in-vascular-surgery-patients-a-prospective-observational-study
#1
Aino Ollila, Juha Virolainen, Joonas Vanhatalo, Pirkka Vikatmaa, Ilkka Tikkanen, Maarit Venermo, Markku Salmenperä, Ville Pettilä, Leena Vikatmaa
OBJECTIVES: Elderly patients undergoing vascular surgery are at major risk for perioperative cardiac complications. The authors investigated continuous electrocardiographic Holter monitoring in a postoperative setting to determine the degree of postoperative ischemic load and its possible associations with perioperative myocardial infarction. DESIGN: A prospective, observational study. SETTING: One university hospital. PARTICIPANTS: The study comprised 51 patients aged 65 years or older undergoing peripheral arterial surgery...
September 28, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/27919494/physical-activity-in-pediatric-onset-multiple-sclerosis-validating-a-questionnaire-for-clinical-practice-and-research
#2
Dominique Kinnett-Hopkins, Stephanie A Grover, E Ann Yeh, Robert W Motl
BACKGROUND: Knowledge regarding physical activity (PA) and its benefits in pediatric onset multiple sclerosis (POMS) is growing and suggests high levels of inactivity. The utility of a validated screening tool for clinical settings is unknown. This study evaluated the Godin Leisure-Time Exercise Questionnaire (GLTEQ) as a measure of PA in POMS. METHODS: POMS patients (n=27) and healthy controls (n=45) wore an accelerometer over a 7-day period and then completed the GLTEQ...
November 2016: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/27919488/clinical-assessment-of-gait-in-individuals-with-multiple-sclerosis-using-wearable-inertial-sensors-comparison-with-patient-based-measure
#3
Massimiliano Pau, Silvia Caggiari, Alessandro Mura, Federica Corona, Bruno Leban, Giancarlo Coghe, Lorena Lorefice, Maria Giovanna Marrosu, Eleonora Cocco
BACKGROUND: This study aims to verify the feasibility of use of wearable accelerometers in an ambulatory environment to assess spatiotemporal parameters of gait in people with Multiple Sclerosis (pwMS), as well as the correlation of objective data with patient-reported outcomes. METHODS: One hundred and five pwMS (Expanded Disability Status Scale, EDSS in the range 0-6.5) classified in three sub-groups (EDSS 0-1.5, EDSS 2-4, EDSS 4.5-6.5) and 47 healthy controls (HC) participated in the study...
November 2016: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/27919265/fatigue-in-patients-with-juvenile-idiopathic-arthritis-relationship-to-perceived-health-physical-health-self-efficacy-and-participation
#4
Wineke Armbrust, Otto H T M Lelieveld, Jolanda Tuinstra, Nico M Wulffraat, G J F Joyce Bos, Jeannette Cappon, Marion A J van Rossum, Pieter J J Sauer, Mariët Hagedoorn
BACKGROUND: Fatigue is common in patients with JIA and affects daily life negatively. We assessed the presence and severity of fatigue in patients with JIA, including factors presumed associated with fatigue (e.g., disease activity, disability, pain, physical activity, exercise capacity, and self-efficacy), and whether fatigue is related to participation in physical education classes, school attendance, and sports frequency. METHODS: The current study used baseline data of 80 patients with JIA (age 8-13) who participated in an intervention aimed at promoting physical activity...
December 6, 2016: Pediatric Rheumatology Online Journal
https://www.readbyqxmd.com/read/27918703/patterns-and-predictors-of-change-in-moderate-to-vigorous-physical-activity-over-time-in-multiple-sclerosis
#5
Rachel E Klaren, Jeffer E Sasaki, Edward McAuley, Robert W Motl
BACKGROUND: Physical inactivity is common in persons with multiple sclerosis (MS), but there is very little known about the pattern and predictors of changes in physical activity over time. PURPOSE: This study examined changes in moderate-to-vigorous physical activity (MVPA) over a 30-month time period and the demographic and clinical predictors of such changes in relapsing-remitting MS (RRMS). METHODS: 269 persons with MS wore an accelerometer for a 7-day period and completed a demographic/clinical scale every 6 months over a 30-month period...
December 5, 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27918699/validation-of-questionnaire-assessed-physical-activity-in-comparison-with-objective-measures-using-accelerometers-and-physical-performance-measures-among-community-dwelling-adults-aged-%C3%A2-85-years-in-tokyo-japan
#6
Yuko Oguma, Yusuke Osawa, Michiyo Takayama, Yukiko Abe, Shigeho Tanaka, I-Min Lee, Yasumichi Arai
BACKGROUND: To date, there is no physical activity (PA) questionnaire with convergent and construct validity for the oldest-old. The aim of the present study was to investigate the validity of questionnaire-assessed PA in comparison with objective measures determined by uniaxial and triaxial accelerometers and physical performance measures in the oldest-old. METHODS: Participants were 155 elderly (mean age 90 years) who were examined at the university and agreed to wear an accelerometer for 7 days in the 3-year-follow-up survey of the Tokyo Oldest-Old Survey of Total Health...
December 5, 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27918697/psychosocial-and-friend-influences-on-objective-sedentary-behavior-and-screen-time-a-mixed-methods-analysis
#7
Jeanette M Garcia, Alen Agaronov, John R Sirard, Diane Whaley, David J Rice, Arthur Weltman
BACKGROUND: Sedentary behavior (SB) increases throughout adolescence, and is associated with adverse health outcomes. PURPOSE: Examine psychosocial and friend influences on SB and screen time in adolescents using a mixed-methods design. METHODS: 108 middle and high school students wore accelerometers to measure objective SB, completed screen time and psychosocial questionnaires, and nominated friends to complete activity questionnaires. Focus groups centered around influences on SB behavior...
December 5, 2016: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/27918482/fuzzy-computing-model-of-activity-recognition-on-wsn-movement-data-for-ubiquitous-healthcare-measurement
#8
Shu-Yin Chiang, Yao-Chiang Kan, Yun-Shan Chen, Ying-Ching Tu, Hsueh-Chun Lin
Ubiquitous health care (UHC) is beneficial for patients to ensure they complete therapeutic exercises by self-management at home. We designed a fuzzy computing model that enables recognizing assigned movements in UHC with privacy. The movements are measured by the self-developed body motion sensor, which combines both accelerometer and gyroscope chips to make an inertial sensing node compliant with a wireless sensor network (WSN). The fuzzy logic process was studied to calculate the sensor signals that would entail necessary features of static postures and dynamic motions...
December 3, 2016: Sensors
https://www.readbyqxmd.com/read/27916856/a-novel-gravity-compensation-method-for-high-precision-free-ins-based-on-extreme-learning-machine
#9
Xiao Zhou, Gongliu Yang, Qingzhong Cai, Jing Wang
In recent years, with the emergency of high precision inertial sensors (accelerometers and gyros), gravity compensation has become a major source influencing the navigation accuracy in inertial navigation systems (INS), especially for high-precision INS. This paper presents preliminary results concerning the effect of gravity disturbance on INS. Meanwhile, this paper proposes a novel gravity compensation method for high-precision INS, which estimates the gravity disturbance on the track using the extreme learning machine (ELM) method based on measured gravity data on the geoid and processes the gravity disturbance to the height where INS has an upward continuation, then compensates the obtained gravity disturbance into the error equations of INS to restrain the INS error propagation...
November 29, 2016: Sensors
https://www.readbyqxmd.com/read/27916817/real-time-classification-of-patients-with-balance-disorders-vs-normal-subjects-using-a-low-cost-small-wireless-wearable-gait-sensor
#10
Bhargava Teja Nukala, Taro Nakano, Amanda Rodriguez, Jerry Tsay, Jerry Lopez, Tam Q Nguyen, Steven Zupancic, Donald Y C Lie
Gait analysis using wearable wireless sensors can be an economical, convenient and effective way to provide diagnostic and clinical information for various health-related issues. In this work, our custom designed low-cost wireless gait analysis sensor that contains a basic inertial measurement unit (IMU) was used to collect the gait data for four patients diagnosed with balance disorders and additionally three normal subjects, each performing the Dynamic Gait Index (DGI) tests while wearing the custom wireless gait analysis sensor (WGAS)...
November 29, 2016: Biosensors
https://www.readbyqxmd.com/read/27914468/intra-individual-variability-in-day-to-day-and-month-to-month-measurements-of-physical-activity-and-sedentary-behaviour-at-work-and-in-leisure-time-among-danish-adults
#11
E S L Pedersen, I H Danquah, C B Petersen, J S Tolstrup
BACKGROUND: Accelerometers can obtain precise measurements of movements during the day. However, the individual activity pattern varies from day-to-day and there is limited evidence on measurement days needed to obtain sufficient reliability. The aim of this study was to examine variability in accelerometer derived data on sedentary behaviour and physical activity at work and in leisure-time during week days among Danish office employees. METHODS: We included control participants (n = 135) from the Take a Stand! Intervention; a cluster randomized controlled trial conducted in 19 offices...
December 3, 2016: BMC Public Health
https://www.readbyqxmd.com/read/27914427/reconstructing-the-normal-velocities-of-acoustic-sources-in-noisy-environments-using-a-rigid-microphone-array
#12
Shang Xiang, Weikang Jiang, Hao Jiang, Jianzheng Gao
An acoustic source identification technique with single layer pressure measurement is presented to reconstruct normal velocities of target sources in noisy environments. The theory for this reconstruction is developed from the inverse patch transfer functions method which is supposed to combine measurements of pressure and velocity on a surface surrounding the source. The rigid microphone array is called an acoustic mask, which is designed to obtain pressure on the Neumann boundary condition and realized by microphones flush mounted on the aluminum plate...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27914423/measurement-of-the-low-wavenumber-component-within-a-turbulent-wall-pressure-by-an-inverse-problem-of-vibration
#13
Damien Lecoq, Charles Pézerat, Fabien Chevillotte, Rémi Bessis
An experimental validation is implemented for the measurement of a weak acoustic component within a turbulent wall pressure by an inverse problem of vibration. The turbulent flow is generated by a forward-facing step in a wind tunnel. In addition to the flow, an acoustic source with a low level excites the plate and plays the role of an additional acoustic component to be identified. The inverse methods called the force analysis technique and the corrected force analysis technique are used to compute the wall pressure fluctuations from the measurement of the plate vibration using an array of 13 accelerometers...
September 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27912733/the-effect-of-percutaneous-coronary-intervention-on-habitual-physical-activity-in-older-patients
#14
Sarah J Charman, Vincent T van Hees, Louise Quinn, Joseph R Dunford, Bilal Bawamia, Murugapathy Veerasamy, Michael I Trenell, Djordje G Jakovljevic, Vijay Kunadian
BACKGROUND: Given the ongoing burden of cardiovascular disease and an ageing population, physical activity in patients with coronary artery disease needs to be emphasized. This study assessed whether sedentary behaviour and physical activity levels differed among older patients (≥75 years) following percutaneous coronary intervention (PCI) for acute coronary syndrome (ACS) consisting of ST-segment elevation myocardial infarction (STEMI) and non STEMI (NSTEMI) versus an elective admission control group of stable angina patients...
December 3, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27911566/pedometer-step-count-targets-during-pulmonary-rehabilitation-in-copd-a-randomized-controlled-trial
#15
Claire M Nolan, Matthew Maddocks, Jane L Canavan, Sarah E Jones, Veronica Delogu, Djeya Kaliaraju, Winston Banya, Samantha S C Kon, Michael I Polkey, William D-C Man
RATIONALE: Increasing physical activity is a key therapeutic aim in COPD. Pulmonary rehabilitation (PR) improves exercise capacity, but there is conflicting evidence regarding its ability to improve physical activity levels. OBJECTIVE: To determine whether using pedometers as an adjunct to PR can enhance time spent in at least moderate intensity physical activity (time ≥ 3METs) in people with COPD. METHODS: In this single-blinded randomized controlled trial, participants were assigned 1:1 to receive control (PR comprising 8 weeks, two supervised sessions/week) or intervention (PR plus pedometer-directed step targets, reviewed weekly for 8 weeks)...
December 2, 2016: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27910446/self-calibration-method-of-the-bias-of-a-space-electrostatic-accelerometer
#16
Shao-Bo Qu, Xiao-Mei Xia, Yan-Zheng Bai, Shu-Chao Wu, Ze-Bing Zhou
The high precision space electrostatic accelerometer is an instrument to measure the non-gravitational forces acting on a spacecraft. It is one of the key payloads for satellite gravity measurements and space fundamental physics experiments. The measurement error of the accelerometer directly affects the precision of gravity field recovery for the earth. This paper analyzes the sources of the bias according to the operating principle and structural constitution of the space electrostatic accelerometer. Models of bias due to the asymmetry of the displacement sensing system, including the mechanical sensor head and the capacitance sensing circuit, and the asymmetry of the feedback control actuator circuit are described separately...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910334/in-vacuum-sensors-for-the-beamline-components-of-the-iter-neutral-beam-test-facility
#17
M Dalla Palma, R Pasqualotto, E Sartori, S Spagnolo, M Spolaore, P Veltri
Embedded sensors have been designed for installation on the components of the MITICA beamline, the prototype ITER neutral beam injector (Megavolt ITER Injector and Concept Advancement), to derive characteristics of the particle beam and to monitor the component conditions during operation for protection and thermal control. Along the beamline, the components interacting with the particle beam are the neutralizer, the residual ion dump, and the calorimeter. The design and the positioning of sensors on each component have been developed considering the expected beam-surface interaction including non-ideal and off-normal conditions...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910103/reliability-and-concurrent-validity-of-a-new-iphone-%C3%A2-goniometric-application-for-measuring-active-wrist-range-of-motion-a-cross-sectional-study-in-asymptomatic-subjects
#18
Mohammad Reza Pourahmadi, Ismail Ebrahimi Takamjani, Javad Sarrafzadeh, Mehrdad Bahramian, Mohammad Ali Mohseni-Bandpei, Fatemeh Rajabzadeh, Morteza Taghipour
Measurement of wrist range of motion (ROM) is often considered to be an essential component of wrist physical examination. The measurement can be carried out through various instruments such as goniometers and inclinometers. Recent smartphones have been equipped with accelerometers and magnetometers, which, through specific software applications (apps) can be used for goniometric functions. This study, for the first time, aimed to evaluate the reliability and concurrent validity of a new smartphone goniometric app (Goniometer Pro©) for measuring active wrist ROM...
December 2, 2016: Journal of Anatomy
https://www.readbyqxmd.com/read/27909358/sensewearmini-and-actigraph-gt3x-accelerometer-classification-of-observed-sedentary-and-light-intensity-physical-activities-in-a-laboratory-setting
#19
Lynne M Feehan, Charles H Goldsmith, April Y F Leung, Linda C Li
Purpose: To compare the ability of SenseWear Mini (SWm) and Actigraph GT3X (AG3) accelerometers to differentiate between healthy adults' observed sedentary and light activities in a laboratory setting. Methods: The 22 participants (15 women, 7 men), ages 19 to 72 years, wore SWm and AG3 monitors and performed five sedentary and four light activities for 5 minutes each while observed in a laboratory setting. Performance was examined through comparisons of accuracy, sensitivity, specificity, positive and negative predictive values, and positive and negative likelihood ratios...
2016: Physiotherapy Canada. Physiothérapie Canada
https://www.readbyqxmd.com/read/27909071/does-task-specific-training-improve-upper-limb-performance-in-daily-life-poststroke
#20
Kimberly J Waddell, Michael J Strube, Ryan R Bailey, Joseph W Klaesner, Rebecca L Birkenmeier, Alexander W Dromerick, Catherine E Lang
Background A common assumption is that changes in upper limb (UL) capacity, or what an individual is capable of doing, translates to improved UL performance in daily life, or what an individual actually does. This assumption should be explicitly tested for individuals with UL paresis poststroke. Objective To examine changes in UL performance after an intensive, individualized, progressive, task-specific UL intervention for individuals at least 6 months poststroke. Methods Secondary analysis on 78 individuals with UL paresis who participated in a phase II, single-blind, randomized parallel dose-response trial...
December 1, 2016: Neurorehabilitation and Neural Repair
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