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https://www.readbyqxmd.com/read/29150800/beat-to-beat-estimation-of-stroke-volume-using-impedance-cardiography-and-artificial-neural-network
#1
S M M Naidu, Prem C Pandey, Uttam R Bagal, Suhas P Hardas
Impedance cardiography is a low-cost noninvasive technique, based on monitoring of the thoracic impedance, for estimation of stroke volume (SV). Impedance cardiogram (ICG) is the negative of the first derivative of the impedance signal. A technique for beat-to-beat SV estimation using impedance cardiography and artificial neural network (ANN) is proposed. A three-layer feed-forward ANN with error back-propagation algorithm is optimized by examining the effects of number of neurons in the hidden layer, activation function, training algorithm, and set of input parameters...
November 18, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29150762/seasonal-influence-on-adherence-to-and-effects-of-an-interval-walking-training-program-on-sedentary-female-college-students-in-japan
#2
Aiko Tanabe, Shizue Masuki, Ken-Ichi Nemoto, Hiroshi Nose
Habitual exercise training is recommended to young people for their health promotion, but adherence may be influenced by atmospheric temperature (T a ) if performed outdoors. We compared the adherence to and the effects of a home-based interval walking training (IWT) program on sedentary female college students between winter and summer. For summer training over 176 days, 48 subjects (18-22 years old) were randomly divided into two groups: the control group (CNTsummer, n = 24), which maintained a sedentary lifestyle as before, and the IWT group (IWTsummer, n = 24), which performed IWT while energy expenditure was monitored by accelerometry...
November 17, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/29150719/preoperative-optimization-for-major-hepatic-resection
#3
REVIEW
Sarah Walcott-Sapp, Kevin G Billingsley
PURPOSE: Major hepatic resections are performed for primary hepatobiliary malignancies, metastatic disease, and benign lesions. Patients with chronic liver disease, including cirrhosis and steatosis, are at an elevated risk of malnutrition and impaired strength and exercise capacity, deficits which cause increased risk of postoperative complications and mortality. The aims of this report are to discuss the pathophysiology of changes in nutrition, exercise capacity, and muscle strength in patient populations likely to require major hepatectomy, and review recommendations for preoperative evaluation and optimization...
November 18, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/29150165/effects-of-programmed-exercise-on-depressive-symptoms-in-midlife-and-older-women-a-meta-analysis-of-randomized-controlled-trials
#4
REVIEW
Faustino R Pérez-López, Samuel J Martínez-Domínguez, Héctor Lajusticia, Peter Chedraui
OBJECTIVE: To perform a systematic review and meta-analysis to clarify the effect of programmed exercise on depressive symptoms (DSs) in midlife and older women. METHODS: We carried out a structured search of PubMed-Medline, Web of Science, Scopus, Embase, Cochrane Library and Scielo, from database inception through June 29, 2017, without language restriction. The search included the following terms: "depression", "depressive symptoms", "exercise", "physical activity", "menopause", and "randomized controlled trial" (RCTs) in midlife and older women...
December 2017: Maturitas
https://www.readbyqxmd.com/read/29150159/diagnostic-performance-of-pulmonary-capacitance-at-rest-and-during-exercise-in-idiopathic-pulmonary-arterial-hypertension
#5
Pankaj Jain, Sriram Rao, Peter Macdonald, Eugene Kotlyar, Andrew Jabbour, Christopher Hayward, Anne Keogh
BACKGROUND: Reliable markers of early disease are needed in pulmonary arterial hypertension (PAH). As measures of the contribution of abnormal vascular compliance to overall vascular resistance, resting and exercise pulmonary capacitance-defined as the stroke volume divided by the change in pulmonary pulse pressure-may be sensitive markers of early disease. METHODS: We examined all patients in our pulmonary hypertension database with idiopathic PAH, who had undergone rest and exercise right heart catheterisation in one sitting...
November 8, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/29149855/increasing-upper-limb-training-intensity-in-chronic-stroke-using-embodied-virtual-reality-a-pilot-study
#6
Daniel Perez-Marcos, Odile Chevalley, Thomas Schmidlin, Gangadhar Garipelli, Andrea Serino, Philippe Vuadens, Tej Tadi, Olaf Blanke, José D R Millán
BACKGROUND: Technology-mediated neurorehabilitation is suggested to enhance training intensity and therefore functional gains. Here, we used a novel virtual reality (VR) system for task-specific upper extremity training after stroke. The system offers interactive exercises integrating motor priming techniques and embodied visuomotor feedback. In this pilot study, we examined (i) rehabilitation dose and training intensity, (ii) functional improvements, and (iii) safety and tolerance when exposed to intensive VR rehabilitation...
November 17, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/29149790/impressions-of-using-the-cohen-mansfield-agitation-inventory-as-an-outcome-measure-lessons-learnt-for-future-clinical-researchers-innovative-practice
#7
Lindsey Brett, Victoria Traynor, Shahla Meedya, Paul Stapley
The Cohen-Mansfield Agitation Inventory was a tool originally developed for use in research to measure agitation and subsequently used in clinical settings. It was the primary outcome measure for a randomised controlled trial which evaluated the effects and feasibility of a physiotherapist-led physical exercise intervention on agitation and physical performance of individuals living with dementia in nursing homes. The study produced weak results in regards to the Cohen-Mansfield Agitation Inventory due to small sample size and perceived issues with the use of the Cohen-Mansfield Agitation Inventory...
January 1, 2017: Dementia
https://www.readbyqxmd.com/read/29149198/experiences-of-older-people-with-dementia-participating-in-a-high-intensity-functional-exercise-program-in-nursing-homes-while-it-s-tough-it-s-useful
#8
Nina Lindelöf, Lillemor Lundin-Olsson, Dawn A Skelton, Berit Lundman, Erik Rosendahl
The objective of the study was to describe the views and experiences of participation in a high-intensity functional exercise (HIFE) program among older people with dementia in nursing homes. The study design was a qualitative interview study with 21 participants (15 women), aged 74-96, and with a Mini-Mental State Examination score of 10-23 at study start. The HIFE-program comprises exercises performed in functional weight-bearing positions and including movements used in everyday tasks. The exercise was individually designed, supervised in small groups in the nursing homes and performed during four months...
2017: PloS One
https://www.readbyqxmd.com/read/29149063/estimating-stair-running-performance-using-inertial-sensors
#9
Lauro V Ojeda, Antonia M Zaferiou, Stephen M Cain, Rachel V Vitali, Steven P Davidson, Leia A Stirling, Noel C Perkins
Stair running, both ascending and descending, is a challenging aerobic exercise that many athletes, recreational runners, and soldiers perform during training. Studying biomechanics of stair running over multiple steps has been limited by the practical challenges presented while using optical-based motion tracking systems. We propose using foot-mounted inertial measurement units (IMUs) as a solution as they enable unrestricted motion capture in any environment and without need for external references. In particular, this paper presents methods for estimating foot velocity and trajectory during stair running using foot-mounted IMUs...
November 17, 2017: Sensors
https://www.readbyqxmd.com/read/29148957/aerobic-exercise-training-performed-by-parents-reduces-mice-offspring-adiposity
#10
Paulo Vitor da Silva Romero, Débora Alves Guariglia, Francielli Ferreira Da Rocha, Caroline de Carvalho Picoli, Gustavo Renan Gilio, Gabriel Sergio Fabricio, Paulo Cesar de Freitas Mathias, Solange Marta Franzói de Moraes, Sidney Barnabé Peres
The present study aimed to determine the effects of physical training performed by parents on mice offspring adiposity. Male and female parents underwent an aerobic training protocol for 7 weeks. The trained and sedentary parents were allowed to mate and the resultant offspring divided in: S (Offspring from Sedentary Parents), T (Offspring from Trained Parents), ST (Offspring from Sedentary Father and Trained Mother) and TS (Offspring from Trained Father and Sedentary Mother). After weaning, offspring was euthanized, blood collected and samples of mesenteric and inguinal fat pads used to isolate adipocytes for morphologic and histological analyses...
November 17, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29148630/men-exhibit-greater-fatigue-resistance-than-women-in-alternated-bench-press-and-leg-press-exercises
#11
Estêvão R Monteiro, James Steele, Jefferson S Novaes, Amanda F Brown, Mark T Cavanaugh, Jakob L Vingren, David G Behm
BACKGROUND: The purpose of this study was to evaluate the influence of sex, exercise order, and rest interval on neuromuscular fatigue resistance for an alternated strength training sequence of bench press (BP) and leg press (LP) exercises. METHODS: Twelve women and 16 men, both recreationally trained, performed four sessions in a random order: 1) BP followed by LP with three-minutes rest (BP+LP with rest), 2) LP followed by BP with three-minutes rest (LP+BP with rest), 3) BP followed by LP without rest interval (BP+LP no rest), and 4) LP followed by BP without rest interval (LP+BP no rest)...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148629/carbohydrate-mouth-rinse-improves-cycling-performance-carried-out-until-the-volitional-exhaustion
#12
Bruno Bavaresco Gambassi, Ylana Gomes de Santana Barros Leal, Edson R Pinheiro Dos Anjos, Bruna A Antonelli, Daniela C Gomes Gonçalves E Silva, Iracema H Pires de Mélo Montenegro, Rita di Cássia de Oliveira Angelo, Isis S Correia Moura, Paulo A Schwingel
BACKGROUND: Carbohydrates (CHO) are among the most investigated nutritional ergogenic aids, and may be consumed in different forms, e.g., mouth rinse with carbohydrate solution (MRCS). In this sense, the aim of this study was to evaluate the impact of MRCS on the performance of physically active individuals undergoing a physical exercise session carried out until the volitional exhaustion. METHODS: This is a counter-balanced randomized study, with a double-blind design...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148627/assessment-of-endpoint-criteria-and-perceived-barriers-during-maximal-cardiorespiratory-fitness-testing-among-pregnant-women
#13
Caitlin M Hesse, Rachel A Tinius, Bailey J Cooley, Alyssa A Olenick, Maire M Blankenship, Donald L Hoover, Jill M Maples
BACKGROUND: A plateau in volume of oxygen consumption (VO2) is the primary indicator for determining if an individual has reached their maximal aerobic capacity. However, secondary criteria can also be used to identify maximal effort (i.e. lactate level, rating of perceived exertion (RPE), percent of age-predicted maximal heart rate (HR) and respiratory exchange ratio (RER)). Age and gender-specific secondary criteria have been developed for the general population, but no secondary criteria have been established for pregnant women...
November 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29148129/development-of-functional-electrical-stimulation-rowing-the-rowstim-series
#14
Brian Andrews, Robin Gibbons, Garry Wheeler
Potentially, functional electrical stimulation (FES)-assisted exercise may have an important therapeutic role in reducing comorbidities associated with spinal cord injury (SCI). Here, we present an overview of these secondary life-threatening conditions, discuss the rationale behind the development of a hybrid exercise called FES rowing, and describe our experience in developing FES rowing technology. FES rowing and sculling are unique forms of adaptive rowing for those with SCI. The paralyzed leg musculature is activated by multiple channels of electrical pulses delivered via self-adhesive electrodes attached to the skin...
November 2017: Artificial Organs
https://www.readbyqxmd.com/read/29148008/supervised-preoperative-forearm-exercise-to-increase-blood-vessel-diameter-in-patients-requiring-an-arteriovenous-access-for-hemodialysis-rationale-and-design-of-the-pinch-trial
#15
Esther D Wilschut, Joris I Rotmans, Ernst Jan Bos, Daniëlle van Zoest, Daniël Eefting, Jaap F Hamming, Koen E A van der Bogt
BACKGROUND: Failure of maturation occurs in 30%-60% of arteriovenous fistula (AVF) creation for hemodialysis, with highest rates in distal radiocephalic fistulas. This is partly due to initial small blood vessel size with limited blood flow capacity. Forearm exercise has shown potential as stimulus for increasing blood vessel size in patients with end-stage renal disease (ESRD) and may promote maturation of AVFs in the upper limb when applied postoperatively. However, it is unknown if forearm exercise increases blood vessel size pre-operatively, which may contribute to more distal AVF creation and raise success rates of AVF surgery...
November 15, 2017: Journal of Vascular Access
https://www.readbyqxmd.com/read/29147922/the-effect-of-head-to-head-competition-on-behavioural-thermoregulation-thermophysiological-strain-and-performance-during-exercise-in-the-heat
#16
Jo Corbett, Danny K White, Martin J Barwood, Christopher R D Wagstaff, Michael J Tipton, Terry McMorris, Joseph T Costello
BACKGROUND: It has been suggested that pacing is a thermoregulatory behaviour. We investigated the effect of competition on pacing, performance and thermophysiological strain during exercise in the heat and the psychological factors mediating competition effects. METHOD: Eighteen males (maximum oxygen uptake [V O 2max] 3.69 [0.44] L min(-1)) undertook a preliminary 20-km cool (wet-bulb globe temperature [WBGT] 12 °C) cycling time trial (TT) and three experimental 20-km trials (balanced order): (i) cool TT (CoolSolo); (ii) hot (WBGT 26 °C) TT (HotSolo); (iii) hot head-to-head competition (HotH2H)...
November 17, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29147830/asymptomatic-adult-intrapericardial-diaphragmatic-hernia-detected-on-cardiac-spect-ct
#17
Muhammad Yasir Adeel, Saad Sikanderkhel, Zartashia Shahab, Isabel Oliva, Jaime Gerber
An 83-year-old man underwent exercise stress test with single photon emission computed tomography (SPECT) myocardial perfusion imaging for new electrocardiogram (EKG) changes. The stress EKG did not show any significant changes. Myocardial perfusion imaging with SPECT demonstrated an inferior wall defect and extracardiac uptake of nuclear tracer. Simultaneous cardiac computed tomography performed for attenuation correction showed presence of intrapericardial hepatic tissue in an anterior diaphragmatic hernia...
November 16, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29147771/maximum-striking-velocities-in-strikes-with-steel-rods-the-influence-of-rod-length-rod-mass-and-volunteer-parameters
#18
T X Trinh, S Heinke, C Rode, S Schenkl, M Hubig, G Mall, Holger Muggenthaler
In blunt force trauma to the head caused by attacks with blunt instruments, contact forces can be estimated based on the conservation of momentum if impact velocities are known. The aims of this work were to measure maximum striking velocities and to examine the influence of rod parameters such as rod mass and length as well as volunteer parameters such as sex, age, body height, body mass, body mass index and the average amount of physical exercise. Steel rods with masses of 500, 1000 and 1500 g as well as lengths of 40, 65 and 90 cm were exemplarily tested as blunt instruments...
November 16, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29147585/acute-exercise-and-neurocognitive-development-in-preadolescents-and-young-adults-an-erp-study
#19
Chien-Heng Chu, Arthur F Kramer, Tai-Fen Song, Chih-Han Wu, Tsung-Min Hung, Yu-Kai Chang
The purpose of this study was to examine the effect of a single bout of exercise on neurocognitive function in preadolescent children and young adults by determining the modulatory role of age and the neuroelectrical mechanism(s) underlying the association between acute exercise and executive function. Twenty preadolescents and 20 young adults completed the Stroop test, and neuroelectrical activity was recorded during two treatment sessions performed in a counterbalanced order. Exercise treatments involved moderate intensity aerobic exercise for 20 min as the main exercise and two 5 min periods of warm-up and cool-down...
2017: Neural Plasticity
https://www.readbyqxmd.com/read/29146687/exercise-induces-muscle-fiber-type-switching-via-transient-receptor-potential-melastatin-2-trpm2-dependent-ca-2-signaling
#20
Seo-Ho Lee, Byung-Ju Kim, Dae-Ryoung Park, Uh-Hyun Kim
The aim of the present study was to examine whether transient receptor potential melastatin 2 (TRPM2) plays a role in muscle fiber type transition during exercise. Mice were trained at a speed of 12 m/min at a slope of 0 ° for 60 min 5 consecutive d/wk for 4-wk. Exhaustion tests were performed on the treadmill (the speed was set at 6 m/min at a slope of 0° and increased at a rate of 1 m/min every 6 min). Isolated primary skeletal muscle cells from TRPM2 knockout (KO) mice showed lower amplitudes of electrical stimuli (ES)-induced Ca(2+) signals when compared to wild-type (WT) mice, due to a defect in Ca(2+) influx...
November 16, 2017: Journal of Applied Physiology
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