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Exercise dependence

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https://www.readbyqxmd.com/read/28817509/high-intensity-exercise-enhances-conduit-artery-vascular-function-in-older-adults
#1
Erika Iwamoto, Josh M Bock, Darren P Casey
PURPOSE: Modulation of vascular function follows an exercise intensity-dependent pattern in young adults. This study aimed to investigate the potential intensity-dependent effects of an acute bout of exercise on conduit and resistance artery function in healthy older adults. METHODS: Eleven healthy older adults (5 males/6 females, 66±1 years) completed 30 minutes of recumbent cycling at 50-55% (low-intensity) and 75-80% (high-intensity) of their age-predicted maximal heart rate on two separate study visits...
August 16, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28816705/microvascular-vasodilator-plasticity-following-acute-exercise
#2
Austin T Robinson, Ibra S Fancher, Abeer M Mahmoud, Shane A Phillips
Endothelium-dependent vasodilation is reduced following acute exercise, or following high intraluminal pressure in isolated arterioles from sedentary adults, but not in arterioles from regular exercisers. The preserved vasodilation in arterioles from exercisers is hydrogen peroxide (H2O2)-dependent, whereas resting dilation is nitric oxide (NO)-dependent. We hypothesize chronic exercise elicits adaptations allowing for maintained vasodilation when NO bioavailability is reduced.
August 14, 2017: Exercise and Sport Sciences Reviews
https://www.readbyqxmd.com/read/28813873/automation-of-motor-dexterity-assessment
#3
Patrick Heyer, Luis R Castrejon, Felipe Orihuela-Espina, Luis Enrique Sucar
Motor dexterity assessment is regularly performed in rehabilitation wards to establish patient status and automatization for such routinary task is sought. A system for automatizing the assessment of motor dexterity based on the Fugl-Meyer scale and with loose restrictions on sensing technologies is presented. The system consists of two main elements: 1) A data representation that abstracts the low level information obtained from a variety of sensors, into a highly separable low dimensionality encoding employing t-distributed Stochastic Neighbourhood Embedding, and, 2) central to this communication, a multi-label classifier that boosts classification rates by exploiting the fact that the classes corresponding to the individual exercises are naturally organized as a network...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813870/upper-limb-training-assessment-program-using-passive-force-controllable-rehabilitation-system
#4
Takehito Kikuchi, Chihiro Sato, Kazuki Yamabe, Isao Abe, Tetsuya Ohno, Shintaro Kugimiya, Akio Inoue
Upper limb rehabilitation training for Hemiplegie patients has been conducted mainly by human therapists. Training methods and conditions depend strongly on their experience because of the wide range of individual differences between patients. The force control and sensing functions of rehabilitation robots are expected to be used for the qualitative assessment of next-generation computational rehabilitation. In this study, we developed a simple exercise machine for upper limbs (SEMUL) using an electro-rheological fluid brake, as a safe brake-type robotic rehabilitation system...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28812404/effects-of-a-low-resistance-interval-bicycling-intervention-in-parkinson-s-disease
#5
Mehmet Uygur, Maria Bellumori, Christopher A Knight
Previous studies have shown that people with Parkinson's disease (PD) benefit from a variety of exercise modalities with respect to symptom management and function. Among the possible exercise modalities, speedwork has been identified as a promising strategy, with direct implications for the rate and amplitude of nervous system involvement. Considering that previous speed-based exercise for PD has often been equipment, personnel and/or facility dependent, and often time intensive, our purpose was to develop a population-specific exercise program that could be self-administered with equipment that is readily found in fitness centers or perhaps the home...
August 16, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28811779/effect-of-exercise-and-morphine-on-psychological-and-physical-dependencies-bdnf-and-trkb-gene-expression-in-rat-s-hippocampus
#6
Mojtaba Naghshvarian, Mohammad-Reza Zarrindast, Shahram Ejtemaei Mehr, Mohammad Mehdi Ommati, Seyedeh Fatemeh Sajjadi
OBJECTIVES: To compare the effect of exercise and morphine on abstinence syndrome and hippocampal gene expression in rat model. METHODS: Thirty adult male rats were exposed to voluntary wheel exercise (low, medium, high) for 28 days. The subjects entered Conditioned Place Preference (CPP) apparatus and experienced morphine (low, medium, high) CPP and followed by naloxone test. Correlation between exercise level, morphine injection, concurrent morphine administration and exercise with morphine CPP, BDNF and TrkB genes was determined...
May 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28810981/thermoregulatory-response-to-exercise-after-exertional-heat-stroke
#7
Emmanuel Sagui, Sophie Beighau, Arnaud Jouvion, Julie Trichereau, Delphine Cornet, René Charles Berthelot, Frédéric Canini, Laurent Grélot
BACKGROUND: After one episode of exertional heat stroke (EHS), risk factors must be identified to determine the potential for subsequent episodes. One of these risk factors, core body temperature (Tco) kinetics during strenuous exercise, may be a surrogate marker suggestive of impaired thermoregulation. This study aimed to determine the kinetics of increases in Tco among military subjects who had a history of EHS. METHODS: Forty subjects (38 males, mean age 28.4 ± 4...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810170/the-role-of-speed-and-incline-in-the-spontaneous-choice-of-technique-in-classical-roller-skiing
#8
Gertjan Ettema, Espen Kveli, Magne Øksnes, Øyvind Sandbakk
Cross-country skiers change technique depending on terrain (incline) and effort (work rate; speed at a particular incline or resistance). The literature is not unequivocal about the influence of incline or speed on the choice of technique, i.e., which of these act as a 'control parameter'. Identifying task related control parameters for spontaneous technique shifts assists elucidating which mechanisms are active for triggering technique transitions. The aim of this study was to investigate whether speed or incline acted as such control parameter for technique shifts during classic style roller skiing...
August 12, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28809631/-comparison-between-the-range-of-movement-canine-real-cervical-spine-and-numerical-simulation-computer-model-validation
#9
R Srnec, Z Horák, R Sedláček, M Sedlinská, M Krbec, A Nečas
PURPOSE OF THE STUDY In developing new or modifying the existing surgical treatment methods of spine conditions an integral part of ex vivo experiments is the assessment of mechanical, kinematic and dynamic properties of created constructions. The aim of the study is to create an appropriately validated numerical model of canine cervical spine in order to obtain a tool for basic research to be applied in cervical spine surgeries. For this purpose, canine is a suitable model due to the occurrence of similar cervical spine conditions in some breeds of dogs and in humans...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28807718/autonomic-regulation-of-systemic-inflammation-in-humans-a-multi-center-blinded-observational-cohort-study
#10
Gareth L Ackland, Gary Minto, Martin Clark, John Whittle, Robert Cm Stephens, Thomas Owen, Pradeep Prabhu, Ana Gutierrez Del Arroyo
OBJECTIVE: Experimental animal models demonstrate that autonomic activity regulates systemic inflammation. By contrast, human studies are limited in number and exclusively use heart rate variability (HRV) as an index of cardiac autonomic regulation. HRV measures are primarily dependent on, and need to be corrected for, heart rate. Thus, independent autonomic measures are required to confirm HRV-based findings. Here, the authors sought to replicate the findings of preceding HRV-based studies by using HRV-independent, exercise-evoked sympathetic and parasympathetic measures of cardiac autonomic regulation to examine the relationship between autonomic function and systemic inflammation...
August 11, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28806762/a-becn1-mutation-mediates-hyperactive-autophagic-sequestration-of-amyloid-oligomers-and-improved-cognition-in-alzheimer-s-disease
#11
Altea Rocchi, Soh Yamamoto, Tabitha Ting, Yuying Fan, Katherine Sadleir, Yigang Wang, Weiran Zhang, Sui Huang, Beth Levine, Robert Vassar, Congcong He
Impairment of the autophagy pathway has been observed during the pathogenesis of Alzheimer's disease (AD), a neurodegenerative disorder characterized by abnormal deposition of extracellular and intracellular amyloid β (Aβ) peptides. Yet the role of autophagy in Aβ production and AD progression is complex. To study whether increased basal autophagy plays a beneficial role in Aβ clearance and cognitive improvement, we developed a novel genetic model to hyperactivate autophagy in vivo. We found that knock-in of a point mutation F121A in the essential autophagy gene Beclin 1/Becn1 in mice significantly reduces the interaction of BECN1 with its inhibitor BCL2, and thus leads to constitutively active autophagy even under non-autophagy-inducing conditions in multiple tissues, including brain...
August 14, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28806046/electrolytes-sodium-disorders
#12
Michael M Braun, Megan Mahowald
Sodium disorders (ie, hyponatremia, hypernatremia) are common electrolyte disturbances in clinical medicine and are associated with increased rates of morbidity and mortality. Etiologies of hyponatremia are classified into four categories. The first is pseudohyponatremia, in which the sodium level is low due to hyperproteinemia, hyperlipidemia, or hyperglycemia. The other three categories are based on overall patient fluid status and include hypovolemic (commonly due to fluid loss), hypervolemic (commonly due to fluid retention from heart failure, cirrhosis, or renal failure), and euvolemic (most often because of syndrome of inappropriate secretion of antidiuretic hormone)...
August 2017: FP Essentials
https://www.readbyqxmd.com/read/28805125/utilizing-mental-health-professionals-to-help-prevent-the-next-attacks
#13
Stevan Weine, David P Eisenman, La Tina Jackson, Janni Kinsler, Chloe Polutnik
Recent high-profile cases and scientific research on lone actor terrorist attackers have indicated that there may be an association with mental illness. Simultaneously, countering violent extremism (CVE) initiatives have recently been placing more emphasis on building intervention (aka secondary prevention) programmes to address this matter, with mental health professionals possibly playing important roles in preventing lone actor terrorist attacks. Mental health professionals can contribute to intervention programmes, as practitioners and as leaders, but more so by drawing upon the threat assessment model, than because of a possible association with mental illness...
August 2017: International Review of Psychiatry
https://www.readbyqxmd.com/read/28804233/effects-of-physical-activity-and-ginkgo-biloba-on-cognitive-function-and-oxidative-stress-modulation-in-ischemic-rats
#14
Ladan Vaghef, Hassan Bafandeh Gharamaleki
Either exercise or Ginkgo biloba is reported to improve cognitive functioning. The aim of this study is to compare the protective effects of forced exercise and Ginkgo biloba on oxidative stress as well as memory impairments induced by transient cerebral ischemia. Adult male Wistar rats were treated with treadmill running or Ginkgo biloba extract for 2 weeks before cerebral ischemia. Memory was assessed using a Morris water maze (MWM) task. At the end of the behavioral testing, oxidative stress biomarkers were evaluated in the hippocampus tissue...
September 2017: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28802909/variable-prognostic-value-of-blood-pressure-response-to-exercise
#15
Yuko Kato, Shinya Suzuki, Tokuhisa Uejima, Hiroaki Semba, Takeshi Yamashita
AIM: The aim of this study was to evaluate the impact of patient background including exercise capacity on the relationship between the blood pressure (BP) response to exercise and prognosis in patients visiting a cardiovascular hospital. METHODS: A total of 2134 patients who were referred to our hospital underwent symptom-limited maximal cardiopulmonary exercise testing, and were followed through medical records and mail. The BP response to exercise was defined as the difference between peak and rest systolic BP...
August 9, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28802639/body-weight-perception-and-body-weight-control-behaviors-in-adolescents
#16
Robson Frank, Gaia S Claumann, Érico P G Felden, Diego A S Silva, Andreia Pelegrini
OBJECTIVE: To investigate the association between the perception of body weight (as above or below the desired) and behaviors for body weight control in adolescents. METHODS: This was a cross-sectional study that included 1051 adolescents (aged 15-19 years) who were high school students attending public schools. The authors collected information on the perception of body weight (dependent variable), weight control behaviors (initiative to change the weight, physical exercise, eating less or cutting calories, fasting for 24h, taking medications, vomiting, or taking laxatives), and measured body weight and height to calculate the body mass index and then classify the weight status...
August 10, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28800689/evaluation-of-edar-vehicle-emissions-remote-sensing-technology
#17
Karl Ropkins, Timothy H DeFries, Francis Pope, David C Green, Jim Kemper, Sandeep Kishan, Gary W Fuller, Hu Li, Jim Sidebottom, Leigh R Crilley, Louisa Kramer, William J Bloss, J Stewart Hager
Despite much work in recent years, vehicle emissions remain a significant contributor in many areas where air quality standards are under threat. Policy-makers are actively exploring options for next generation vehicle emission control and local fleet management policies, and new monitoring technologies to aid these activities. Therefore, we report here on findings from two separate but complementary blind evaluation studies of one new-to-market real-world monitoring option, HEAT LLC's Emission Detection And Reporting system or EDAR, an above-road open path instrument that uses Differential Absorption LIDAR to provide a highly sensitive and selective measure of passing vehicle emissions...
August 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28799895/arginine-and-aerobic-training-prevent-endothelial-and-metabolic-alterations-in-rats-at-high-risk-for-the-development-of-the-metabolic-syndrome
#18
Renata F Medeiros, Thaiane G Gaique, Thais Bento-Bernardes, Raquel Kindlovits, Tamiris M B Gomes, Nadia Alice V Motta, Fernanda Carla Brito, Caroline Fernandes-Santos, Karen J Oliveira, Antonio Claudio L Nóbrega
Endothelial function is a key mechanism in the development of CVD. Arginine and exercise are important non-pharmacological strategies for mitigating the impact of metabolic changes in the metabolic syndrome, but the effect of their combined administration is unknown. Thus, the aim of this study was to investigate the isolated and combined effects of aerobic training and arginine supplementation on metabolic variables and vascular reactivity in rats at high risk for developing the metabolic syndrome. Wistar rats were divided into two groups: control and fructose (F - water with 10 % fructose)...
July 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28797940/values-for-the-icecap-supportive-care-measure-icecap-scm-for-use-in-economic-evaluation-at-end-of-life
#19
Elisabeth Huynh, Joanna Coast, John Rose, Philip Kinghorn, Terry Flynn
End of life care may have elements of value that go beyond health. A generic measure of the benefits of end of life care could be helpful to decision makers. Such a measure, based on the capability approach, has recently been developed: the ICECAP Supportive Care Measure. This paper reports the first valuation exercise for that measure, with data from 6020 individuals collected from an on-line general population panel during June 2013. Individuals were asked to complete a stated choice experiment that combined best-worst scaling and a standard discrete choice experiment...
July 21, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28796528/acute-passive-static-stretching-and-cramp-threshold-frequency
#20
Gino Panza, Justin Stadler, Donal Murray, Nicholas Lerma, Tomas Barrett, Ryan Pettit-Mee, Jeffrey E Edwards
CONTEXT:   Exercise-associated muscle cramps are a common clinical problem for athletes. OBJECTIVE:   To determine whether acute passive static stretching altered cramp threshold frequency (CTF) of electrically induced muscle cramps. DESIGN:   Crossover study. SETTING:   Laboratory. PATIENTS OR OTHER PARTICIPANTS:   Seventeen healthy college-aged individuals. INTERVENTION(S):   Stretching or no stretching...
August 10, 2017: Journal of Athletic Training
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