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Exercise dependence

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https://www.readbyqxmd.com/read/28924220/towards-addressing-the-body-electrolyte-environment-via-sweat-analysis-pilocarpine-iontophoresis-supports-assessment-of-plasma-potassium-concentration
#1
Donato Vairo, Laurie Bruzzese, Marion Marlinge, Lea Fuster, Nabil Adjriou, Nathalie Kipson, Philippe Brunet, Jennifer Cautela, Yves Jammes, Giovanna Mottola, Stephane Burtey, Jean Ruf, Regis Guieu, Emmanuel Fenouillet
Electrolyte concentration in sweat depends on environmental context and physical condition but also on the pathophysiological status. Sweat analyzers may be therefore the future way for biological survey although how sweat electrolyte composition can reflect plasma composition remains unclear. We recruited 10 healthy subjects and 6 patients to have a broad range of plasma electrolyte concentrations (chloride, potassium and sodium) and pH. These variables were compared to those found in sweat produced following cycling exercise or pilocarpine iontophoresis, a condition compatible with operating a wearable device...
September 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28923244/cardio-respiratory-function-during-exercise-in-the-cobia-rachycentron-canadum-the-impact-of-crude-oil-exposure
#2
Derek Nelson, John D Stieglitz, Georgina K Cox, Rachael M Heuer, Daniel D Benetti, Martin Grosell, Dane A Crossley
Aerobic exercise capacity is dependent on the cardiorespiratory system's ability to supply oxygen at a rate that meets energetic demands. In teleost fish crude oil exposure, with the associated polycyclic aromatic hydrocarbons (PAH's), reduces exercise performance and this has been hypothesized to be due to compromised cardiovascular function. In this study, we test this hypothesis by simultaneously measuring cardiovascular performance, oxygen consumption, and swim performance in a pelagic teleost, the cobia (Rachycentron canadum)...
September 15, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28919863/oxygen-uptake-kinetics-is-slower-in-swimming-than-arm-cranking-and-cycling-during-heavy-intensity
#3
Ana Sousa, Fabio Borrani, Ferran A Rodríguez, Grégoire P Millet
Oxygen uptake ([Formula: see text]) kinetics has been reported to be influenced by the activity mode. However, only few studies have compared [Formula: see text]O2 kinetics between activities in the same subjects in which they were equally trained. Therefore, this study compared the [Formula: see text]O2 kinetics response to swimming, arm cranking, and cycling within the same group of subjects within the heavy exercise intensity domain. Ten trained male triathletes (age 23.2 ± 4.5 years; height 180.8 ± 8...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28918494/betaine-in-the-brain-characterization-of-betaine-uptake-its-influence-on-other-osmolytes-and-its-potential-role-in-neuroprotection-from-osmotic-stress
#4
Leena S Knight, Quinn Piibe, Ian Lambie, Christopher Perkins, Paul H Yancey
Betaine (N-trimethylglycine), a common osmolyte, has received attention because of the number of clinical reports associating betaine supplementation with improved cognition, neuroprotection and exercise physiology. However, tissue analyses report little accumulation of betaine in brain tissue despite the presence of betaine/GABA transporters (BGT1) at the blood brain barrier and in nervous tissue, calling into question whether betaine influences neuronal function directly or indirectly. Therefore, the focus of this study was to determine what capacity nervous tissue has to accumulate betaine, specifically in the hippocampus, a region of the brain associated with learning and memory and one that is particularly susceptible to damage (e...
September 16, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28916822/ampk-phosphorylation-of-ulk1-is-required-for-targeting-of-mitochondria-to-lysosomes-in-exercise-induced-mitophagy
#5
Rhianna C Laker, Joshua C Drake, Rebecca J Wilson, Vitor A Lira, Bevan M Lewellen, Karen A Ryall, Carleigh C Fisher, Mei Zhang, Jeffrey J Saucerman, Laurie J Goodyear, Mondira Kundu, Zhen Yan
Mitochondrial health is critical for skeletal muscle function and is improved by exercise training through both mitochondrial biogenesis and removal of damaged/dysfunctional mitochondria via mitophagy. The mechanisms underlying exercise-induced mitophagy have not been fully elucidated. Here, we show that acute treadmill running in mice causes mitochondrial oxidative stress at 3-12 h and mitophagy at 6 h post-exercise in skeletal muscle. These changes were monitored using a novel fluorescent reporter gene, pMitoTimer, that allows assessment of mitochondrial oxidative stress and mitophagy in vivo, and were preceded by increased phosphorylation of AMP activated protein kinase (Ampk) at tyrosine 172 and of unc-51 like autophagy activating kinase 1 (Ulk1) at serine 555...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28916259/what-we-see-when-we-read-visualization-and-vividness-in-reading-fictional-narratives
#6
REVIEW
Renate Brosch
Visualization is defined as the production of mental images in the process of reading (Esrock 2005: 633). This article is concerned with varieties of visualization during an absorbing reading of a fictional narrative, the mental images that range from an indistinct and largely automatic default visualization to the much more vivid images that occur at significant stages in the narrative. Neuroscientific studies of vision have collected a large and impressively varied body of experimental evidence for two major processing streams - the dorsal and the ventral-specialized for vision-for-action and vision for-perception respectively...
August 24, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28915274/prevalence-of-mind-and-body-exercises-mbe-in-relation-to-demographics-self-rated-health-and-purchases-of-prescribed-psychotropic-drugs-and-analgesics
#7
Lina Rådmark, Linda L Magnusson Hanson, Eva Bojner Horwitz, Walter Osika
This study aims to identify any differences regarding gender, age, socioeconomic status (SES), self-rated health, perceived stress and the purchase of prescribed drugs among people who practice mind and body exercises (MBE) extensively compared to people who do not. METHODS: The study includes 3,913 men and 4,803 women aged 20-72 who participated in the Swedish Longitudinal Occupational Survey of Health (SLOSH). The respondents were divided into three groups depending on frequency of MBE practice (never/seldom/often)...
2017: PloS One
https://www.readbyqxmd.com/read/28912128/aging-modifies-the-effect-of-cardiac-output-on-middle-cerebral-artery-blood-flow-velocity
#8
Anne-Sophie G T Bronzwaer, Jasper Verbree, Wim J Stok, Mat J A P Daemen, Mark A van Buchem, Matthias J P van Osch, Johannes J van Lieshout
An association between cerebral blood flow (CBF) and cardiac output (CO) has been established in young healthy subjects. As of yet it is unclear how this association evolves over the life span. To that purpose, we continuously recorded mean arterial pressure (MAP; finger plethysmography), CO (pulse contour; CO-trek), mean blood flow velocity in the middle cerebral artery (MCAV; transcranial Doppler ultrasonography), and end-tidal CO2 partial pressure (PetCO2) in healthy young (19-27 years), middle-aged (51-61 years), and elderly subjects (70-79 years)...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28911059/forcing-the-vicious-circle-sarcopenia-increases-toxicity-decreases-response-to-chemotherapy-and-worsens-with-chemotherapy
#9
F Bozzetti
Sarcopenia has recently emerged as a new condition that, independently from malnutrition, may adversely affect the prognosis of cancer patients. Purpose of this narrative review is to define the prevalence of sarcopenia in different primaries, its role in leading to chemotherapy toxicity and decreased compliance with the oncological therapy and the effect of some drugs on the onset of sarcopenia. Finally, the review aims to describe the current approaches to restore the muscle mass through nutrition, exercise and anti-inflammatory agents or multimodal programmes with a special emphasis on the results of randomized controlled trials...
September 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28904793/relationship-between-engagement-and-level-of-functional-status-in-older-adults
#10
Thomas A Dombrowsky
Functional status is an important component of quality of life for older adults and for their caregivers. Factors associated with level of functional status include age, comorbidity, cognitive status, depression, social support, and activity. Of the types of activity linked with functional status, the strongest evidence is for physical exercise, with weaker evidence for social and productive activity. Engagement is a construct including motivation, commitment, and participation. OBJECTIVE: The objective of this study was to determine whether or not engagement is associated with level of functional status after controlling for age, comorbidity, and depression among older adults...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28904280/food-dependent-exercise-induced-anaphylaxis-due-to-ingestion-of-mikan-citrus-unshiu
#11
Yutaka Tanaka, Marie Sugihara, Shuntaro Tsumagari, Nobue Takamatsu, Kazuyuki Kurihara
A 12-year-old girl was referred to our hospital owing to repeated anaphylactic reactions induced by exercise after meals. Food-dependent exercise-induced anaphylaxis (FDEIAn) was suspected. However, sequential tests of typical foods, including egg, milk, soy, and wheat, in combination with exercise, were all negative.The results of the skin prick test (SPT) for Citrus unshiu and specific IgE test for orange and grapefruit were positive. Although no symptoms were noted after an exercise challenge combined with the ingestion of only Citrus unshiu, an anaphylactic reaction was induced by additional acetyl-salicylic acid...
2017: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/28903474/nitric-oxide-heat-shock-protein-axis-in-menopausal-hot-flushes-neglected-metabolic-issues-of-chronic-inflammatory-diseases-associated-with-deranged-heat-shock-response
#12
Antônio Azambuja Miragem, Paulo Ivo Homem de Bittencourt
BACKGROUND: Although some unequivocal underlying mechanisms of menopausal hot flushes have been demonstrated in animal models, the paucity of similar approaches in humans impedes further mechanistic outcomes. Human studies might show some as yet unexpected physiological mechanisms of metabolic adaptation that permeate the phase of decreased oestrogen levels in both symptomatic and asymptomatic women. This is particularly relevant because both the severity and time span of hot flushes are associated with increased risk of chronic inflammatory disease...
September 1, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28901811/the-efficacy-of-stretching-exercises-to-reduce-posterior-shoulder-tightness-acutely-in-the-postoperative-population-a-single-blinded-randomized-controlled-trial
#13
Paul A Salamh, Morey J Kolber, Eric J Hegedus, Chad E Cook
BACKGROUND: Posterior shoulder tightness (PST) is a postoperative complication leading to pain, impaired mobility, and reduced function. Despite the potential morbidity associated with PST, no studies have investigated the efficacy of shoulder-stretching methods in the postsurgical population. The purpose of this study was to determine the short-term efficacy of two stretches designed to reduce PST. METHODS: The study enrolled 63 patients [mean age 51 (12) years, height 173...
September 13, 2017: Physiotherapy Theory and Practice
https://www.readbyqxmd.com/read/28899858/redd1-induction-regulates-the-skeletal-muscle-gene-expression-signature-following-acute-aerobic-exercise
#14
Bradley S Gordon, Jennifer L Steiner, Michael L Rossetti, Shuxi Qiao, Leif W Ellisen, Subramaniam S Govindarajan, Alexey M Eroshkin, Dave L Williamson, Paul M Coen
The metabolic stress placed on skeletal muscle by aerobic exercise promotes acute and long-term health benefits in part through changes in gene expression. However, the transducers that mediate altered gene expression signatures have not been completely elucidated. Regulated in Development and DNA Damage 1 (REDD1) is a stress-induced protein whose expression is transiently increased in skeletal muscle following acute aerobic exercise. However, the role of this induction remains unclear. Because REDD1 altered gene expression in other model systems, we sought to determine whether REDD1 induction following acute exercise altered the gene expression signature in muscle...
September 12, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28899356/barriers-to-lifestyle-changes-for-prevention-of-cardiovascular-disease-a-survey-among-40-60-year-old-danes
#15
Jesper Bo Nielsen, Anja Leppin, Dort E Gyrd-Hansen, Dorte Ejg Jarbøl, Jens Søndergaard, Pia Veldt Larsen
BACKGROUND: Elimination of modifiable risk factors including unhealthy lifestyle has the potential for prevention of 80% of cardiovascular disease cases. The present study focuses on disclosing barriers for maintaining specific lifestyle changes by exploring associations between perceiving these barriers and various sociodemographic and health-related characteristics. METHODS: Data were collected through a web-based questionnaire survey and included 962 respondents who initially accepted treatment for a hypothetical cardiovascular risk, and who subsequently stated that they preferred lifestyle changes to medication...
September 12, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28898308/-the-treatment-of-cannabis-dependence-clinical-work-psychotherapy-and-evidence
#16
José Capece, Federico Pavlovsky
Identifying compulsive consumption of marijuana in association with another mental disorder (attentional defcit disorder, bipolar disorder, depression or psychosis) presents the challenge of clarifying validated therapeutic strategies, especially within the teen population, in which it shows the highest prevalence. The ever-increasing prevalence and the need for regional treatments, demand that we approach this health matter as a public health issue. The ideological con?icts related to the necessary decriminalization of consumption and the current debate on the medical use of marijuana often confuse the urgent need to establish effective therapeutic strategies for the population affected by this mental disorder...
November 2016: Vertex: Revista Argentina de Psiquiatriá
https://www.readbyqxmd.com/read/28890529/factors-relating-to-the-feeling-of-school-avoidance-among-elementary-school-children-results-from-the-mext-ministry-of-education-culture-sports-science-and-education-super-shokuiku-school-project
#17
Masahiro Akimoto, Michikazu Sekine, Masaaki Yamada, Takashi Tatsuse
Purpose This study aims to evaluate whether lifestyle factors including media use and social and family environments are associated with elementary school children's feeling of school avoidance.Methods Total study population for this study was 2,057 children in 5 elementary schools in Takaoka city, Toyama prefecture, which participated in the MEXT Super Shokuiku School Project. A questionnaire survey was conducted in July 2014 and 1,936 students responded (Response rate: 94.1%). Of those who responded, data from 1,698 respondents were relevant for this study...
2017: [Nihon Kōshū Eisei Zasshi] Japanese Journal of Public Health
https://www.readbyqxmd.com/read/28890521/effect-of-burdock-extract-on-physical-performance-and-physiological-fatigue-in-mice
#18
Wen-Chyuan Chen, Yi-Ju Hsu, Mon-Chien Lee, Hua Shuai Li, Chun-Sheng Ho, Chi-Chang Huang, Fu-An Chen
Burdock (BD) is a common vegetable with many pharmacological properties. However, few studies have examined the effect of BD on exercise performance and physical fatigue. We aimed to evaluate the potential beneficial effects of BD on fatigue and ergogenic functions following physical challenge in mice. METHODS: Male ICR mice were divided into four groups to receive either vehicle, or BD at 348.5, 697 or 1,742.5 mg/kg/day, by daily oral gavage for 4 weeks. Exercise performance and fatigue were evaluated from forelimb grip strength, exhaustive swimming time, and post-exercise levels of physical fatigue-related biomarkers serum lactate, ammonia, glucose, and creatine kinase (CK)...
September 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28889088/participation-in-randomised-controlled-trials-perspectives-of-psychiatric-patients-and-key-relatives
#19
Donae Elizabeth George, Saumil Dholakia, Prathap Tharyan
This study assessed the perspectives of adults who had acute nonorganic psychiatric disorders and were admitted in a private, not for- profit medical college hospital, and also of their key relatives, on randomised controlled trials (RCTs). Structured questionnaires and audio-recorded interviews were used for the purpose. We explored their willingness and motivation to participate in two hypothetical RCTs with different risks and burdens. The transcripts of the interviews were analysed using the principles of grounded theory and framework analysis...
August 1, 2017: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/28888922/microrna-20a-participates-in-the-aerobic-exercise-based-prevention-of-coronary-artery-disease-by-targeting-pten
#20
Dongwei Wang, Yi Wang, Juan Ma, Wenping Wang, Bingbing Sun, Tengfei Zheng, Ming Wei, Yangli Sun
BACKGROUND: Exercise can reduce the coronary artery disease (CAD) incidence. MiRNA-20a has been reported to distinctly expressed after sustain physical activity. However, its expression and regulation pattern in CAD model with or without exercise has not been reported. OBJECTIVE: In present study, we aim to investigate regulatory mechanism of miR-20a in exercise-associated reduced-CAD incidence and miR-20a-dependent signaling pathways. METHODS: Eight weeks old male ApoE/LDLR double knock out mice were recruited for this study...
September 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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