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https://www.readbyqxmd.com/read/27912733/the-effect-of-percutaneous-coronary-intervention-on-habitual-physical-activity-in-older-patients
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/27908977/physostomous-channel-catfish-ictalurus-punctatus-modify-swimming-mode-and-buoyancy-based-on-flow-conditions
#8
Makoto A Yoshida, Daisuke Yamamoto, Katsufumi Sato
The employment of gliding in aquatic animals as a means of conserving energy has been theoretically predicted and discussed for decades. Several studies have shown that some species glide, whereas others do not. Freshwater fish species that widely inhabit both lentic and lotic environments are thought to be able to adapt to fluctuating flow conditions in terms of locomotion. In adapting to the different functional demands of lentic and lotic environments on fish energetics, physostomous (open swim bladder) fish may optimise their locomotion and activity by controlling their net buoyancy; few buoyancy studies have however been conducted on physostomous fish in the wild...
December 1, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27908173/pacemaker-and-icd-oversensing-induced-by-movements-near-the-mri-scanner-bore
#9
E Mattei, F Censi, G Calcagnini, R Falsaperla, E Genovese, A Napolitano, V Cannatà
PURPOSE: The effect of the movement near the MRI scanner bore for people with a pacemaker (PM) or an implantable cardioverter defibrillator (ICD) is experimentally evaluated and discussed. METHODS: The authors performed in vitro measurements on a saline-filled human-shaped phantom (male, 170 cm height), equipped first with an MR-conditional PM (bicameral configuration, DDD programming), then with an MR-conditional ICD (biventricular configuration, detection algorithms enable but shock delivery disable)...
December 2016: Medical Physics
https://www.readbyqxmd.com/read/27908079/using-line-acceleration-to-measure-false-killer-whale-pseudorca-crassidens-click-and-whistle-source-levels-during-pelagic-longline-depredation
#10
Aaron Thode, Lauren Wild, Janice Straley, Dustin Barnes, Ali Bayless, Victoria O'Connell, Erin Oleson, Jit Sarkar, Dan Falvey, Linda Behnken, Sean Martin
False killer whales (Pseudorca crassidens) depredate pelagic longlines in offshore Hawaiian waters. On January 28, 2015 a depredation event was recorded 14 m from an integrated GoPro camera, hydrophone, and accelerometer, revealing that false killer whales depredate bait and generate clicks and whistles under good visibility conditions. The act of plucking bait off a hook generated a distinctive 15 Hz line vibration. Two similar line vibrations detected at earlier times permitted the animal's range and thus signal source levels to be estimated over a 25-min window...
November 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27906317/theoretical-modeling-and-experimental-demonstration-of-raman-probe-induced-spectral-dip-for-realizing-a-superluminal-laser
#11
Joshua Yablon, Zifan Zhou, Minchuan Zhou, Ye Wang, S Tseng, M S Shahriar
We have demonstrated experimentally a Diode-Pumped Alkali Laser (DPAL) with a Raman resonance induced dip in the center of the gain profile, in order to produce an anomalous dispersion, necessary for making the laser superluminal. Numerical calculations match closely with experimental results, and indicate that the laser is operating superluminally, with the group index far below unity (~0.00526) at the center of the dip. The estimated factor of enhancement in the sensitivity to cavity length perturbation is ~190, approximately equaling the inverse of the group index...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27905643/-inverse-association-of-cardiorespiratory-fitness-with-cardiovascular-risk-factors-in-chilean-adults
#12
Carlos Cristi-Montero, Rodrigo Ramírez-Campillo, Cristian Alvarez, Alex Garrido Méndez, María Adela Martínez, Ximena Díaz Martínez, Ana María Leiva, Carlos Salas, Manuel Gutiérrez, Ruth Sanzana-Inzunza, Eliana Durán, Ana María Labraña, Nicolás Aguilar-Farías, Carlos Celis-Morales
BACKGROUND: A high level of cardiorespiratory fitness (CRF) is an important protector against cardiovascular and metabolic diseases. AIM: To explore the association of CRF with several metabolic markers and estimate the variation of these parameters by an increase of 1 MET change in CRF. MATERIAL AND METHODS: Cross-sectional study of 447 adults (56% women) without medical history of cardiometabolic diseases. Physical activity evaluated using accelerometry, body mass index (BMI), blood pressure, blood glucose and insulin and lipid profile were measured...
August 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/27905148/simultaneous-validation-of-five-activity-monitors-for-use-in-adult-populations
#13
C Powell, B P Carson, K P Dowd, A E Donnelly
Numerous cut-points exist to measure physical activity by accelerometry. The ability to compare accelerometer findings from different devices from different locations may be advantageous to researchers. This study aimed to develop and validate cut-points for 1.5, 3, and 6 METs in five activity monitors simultaneously. Fifty-six participants (mean age=39.9 [±11.5] years) performed six activities while wearing a CosMED K4b(2) and five activity monitors: activPAL3 Micro, activPAL, ActiGraph GT1M, ActiGraph wGT3X-BT, and GENEActiv...
December 1, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27904925/breaking-sitting-with-light-activities-vs-structured-exercise-a-randomised-crossover-study-demonstrating-benefits-for-glycaemic-control-and-insulin-sensitivity-in-type-2-diabetes
#14
Bernard M F M Duvivier, Nicolaas C Schaper, Matthijs K C Hesselink, Linh van Kan, Nathalie Stienen, Bjorn Winkens, Annemarie Koster, Hans H C M Savelberg
AIMS/HYPOTHESIS: We aimed to examine the effects of breaking sitting with standing and light-intensity walking vs an energy-matched bout of structured exercise on 24 h glucose levels and insulin resistance in patients with type 2 diabetes. METHODS: In a randomised crossover study, 19 patients with type 2 diabetes (13 men/6 women, 63 ± 9 years old) who were not using insulin each followed three regimens under free-living conditions, each lasting 4 days: (1) Sitting: 4415 steps/day with 14 h sitting/day; (2) Exercise: 4823 steps/day with 1...
December 1, 2016: Diabetologia
https://www.readbyqxmd.com/read/27903315/gait-and-posture-discrimination-in-sheep-using-a-tri-axial-accelerometer
#15
M Radeski, V Ilieski
Temporo-spatial observation of the leg could provide important information about the general condition of an animal, especially for those such as sheep and other free-ranging farm animals that can be difficult to access. Tri-axial accelerometers are capable of collecting vast amounts of data for locomotion and posture observations; however, interpretation and optimization of these data records remain a challenge. The aim of the present study was to introduce an optimized method for gait (walking, trotting and galloping) and posture (standing and lying) discrimination, using the acceleration values recorded by a tri-axial accelerometer mounted on the hind leg of sheep...
December 1, 2016: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/27903049/associations-between-time-spent-in-green-areas-and-physical-activity-among-late-middle-aged-adults
#16
Bart Dewulf, Tijs Neutens, Delfien Van Dyck, Ilse De Bourdeaudhuij, Steven Broekx, Carolien Beckx, Nico Van de Weghe
Physical activity is an important facilitator for health and wellbeing, especially for late middle-aged adults, who are more susceptible to cardiovascular diseases. Physical activity performed in green areas is supposed to be particularly beneficial, so we studied whether late middle- aged adults are more active in green areas than in non-green areas and how this is influenced by individual characteristics and the level of neighbourhood greenness. We tracked 180 late middle-aged (58 to 65 years) adults using global positioning system and accelerometer data to know whether and where they were sedentary or active...
November 16, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27896433/continuous-daily-assessment-of-multiple-sclerosis-disability-using-remote-step-count-monitoring
#17
V J Block, A Lizée, E Crabtree-Hartman, C J Bevan, J S Graves, R Bove, A J Green, B Nourbakhsh, M Tremblay, P-A Gourraud, M Y Ng, M J Pletcher, J E Olgin, G M Marcus, D D Allen, B A C Cree, J M Gelfand
Disability measures in multiple sclerosis (MS) rely heavily on ambulatory function, and current metrics fail to capture potentially important variability in walking behavior. We sought to determine whether remote step count monitoring using a consumer-friendly accelerometer (Fitbit Flex) can enhance MS disability assessment. 99 adults with relapsing or progressive MS able to walk ≥2-min were prospectively recruited. At 4 weeks, study retention was 97% and median Fitbit use was 97% of days. Substudy validation resulted in high interclass correlations between Fitbit, ActiGraph and manual step count tally during a 2-minute walk test, and between Fitbit and ActiGraph (ICC = 0...
November 28, 2016: Journal of Neurology
https://www.readbyqxmd.com/read/27896298/applying-latent-class-assignments-for-accelerometry-data-to-external-populations-data-from-the-national-health-and-nutrition-examination-survey-2003-2006
#18
Kelly R Evenson, Fang Wen, Annie Green Howard, Amy H Herring
Latent class analysis can identify unmeasured mutually exclusive categories (class membership) among participants for either observed categorical or continuous variables. More recently, latent class analysis has been applied to accelerometry to better understand the day-to-day patterns of physical activity and sedentary behavior. Typically, the class assignments are only relevant to the study for which they were derived and not made available for others to use. Using one-week accelerometry (ActiGraph #AM7164) data collected from the National Health and Nutrition Examination Survey during 2003-2006, latent classes of physical activity and sedentary behavior were derived separately for youths 6-17 years and adults >=18 years...
December 2016: Data in Brief
https://www.readbyqxmd.com/read/27896045/barriers-to-physical-activity-as-moderators-of-intervention-effects
#19
Michael E Schoeny, Louis Fogg, Susan W Buchholz, Arlene Miller, JoEllen Wilbur
The impact of interventions to increase physical activity (PA) may vary as a function of participants' barriers to PA. The aim of this paper is to determine whether individual barriers (demographic, physical health, psychological health, neighborhood factors, perceived barriers to PA, social support for PA) moderate treatment effects on increases in PA. Three treatment conditions tested the relative efficacy of a group-based PA intervention alone or supplemented by either personal or automated phone calls made between group meetings...
March 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/27895473/calf-raise-senior-a-new-test-for-assessment-of-plantar-flexor-muscle-strength-in-older-adults-protocol-validity-and-reliability
#20
Helô-Isa André, Filomena Carnide, Edgar Borja, Fátima Ramalho, Rita Santos-Rocha, António P Veloso
PURPOSE: This study aimed to develop a new field test protocol with a standardized measurement of strength and power in plantar flexor muscles targeted to functionally independent older adults, the calf-raise senior (CRS) test, and also evaluate its reliability and validity. PATIENTS AND METHODS: Forty-one subjects aged 65 years and older of both sexes participated in five different cross-sectional studies: 1) pilot (n=12); 2) inter- and intrarater agreement (n=12); 3) construct (n=41); 4) criterion validity (n=33); and 5) test-retest reliability (n=41)...
2016: Clinical Interventions in Aging
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