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Exercise dependence

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https://www.readbyqxmd.com/read/28544643/adaptations-to-endurance-training-depend-on-exercise-induced-oxidative-stress-exploiting-redox-inter-individual-variability
#1
Nikos V Margaritelis, Anastasios A Theodorou, Vassilis Paschalis, Aristidis S Veskoukis, Konstantina Dipla, Andreas Zafeiridis, George Panayiotou, Ioannis S Vrabas, Antonios Kyparos, Michalis G Nikolaidis
AIM: The aim of the present study was to reveal the role of reactive oxygen and nitrogen species (RONS) in exercise adaptations under physiological in vivo conditions and without the interference from other exogenous redox agents (e.g., a pro-oxidant or antioxidant). METHODS: We invented a novel methodological set-up that exploited the large redox inter-individual variability in exercise responses. More specifically, we used exercise-induced oxidative stress as the "classifier" measure (i...
May 24, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28543923/sex-differences-in-fitness-and-cardiac-function-during-exercise-in-adolescents-with-chronic-fatigue
#2
Paolo T Pianosi, Eric Emerling, Kristin C Mara, Amy L Weaver, Philip R Fischer
Females demonstrate less robust Frank-Starling mechanism with respect to cardiac preload than males at rest. We asked whether this phenomenon would also affect cardiac performance during exercise. We hypothesized that stroke volume (SV) response to exercise would be more limited in deconditioned females such that cardiac output would be mainly rate dependent, compared with males. We conducted a chart audit of clinical exercise tests performed by adolescents with chronic fatigue. Oxygen uptake (VO2 ) was measured breath-by-breath at rest and during cycle ergometry, while cardiac output was measured by acetylene rebreathing at rest plus 2-3 sub-threshold workloads...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28543228/scenario-evaluator-for-electrical-resistivity-survey-pre-modeling-tool
#3
Neil Terry, Frederick D Day-Lewis, Judith L Robinson, Lee D Slater, Keith Halford, Andrew Binley, John W Lane, Dale Werkema
Geophysical tools have much to offer users in environmental, water resource, and geotechnical fields; however, techniques such as electrical resistivity imaging (ERI) are often oversold and/or overinterpreted due to a lack of understanding of the limitations of the techniques, such as the appropriate depth intervals or resolution of the methods. The relationship between ERI data and resistivity is nonlinear; therefore, these limitations depend on site conditions and survey design and are best assessed through forward and inverse modeling exercises prior to field investigations...
May 23, 2017: Ground Water
https://www.readbyqxmd.com/read/28542270/prevalence-of-cough-throughout-childhood-a-cohort-study
#4
Maja Jurca, Alban Ramette, Cristian M Dogaru, Myrofora Goutaki, Ben D Spycher, Philipp Latzin, Erol A Gaillard, Claudia E Kuehni
BACKGROUND: Cough in children is a common reason for medical consultations and affects quality of life. There are little population-based data on the epidemiology of recurrent cough in children and how this varies by age and sex, or between children with and without wheeze. We determined the prevalence of cough throughout childhood, comparing several standardised cough questions. We did this for the entire population and separately for girls and boys, and for children with and without wheeze...
2017: PloS One
https://www.readbyqxmd.com/read/28541595/how-does-ivabradine-effect-erectile-dysfunction-in-patients-with-heart-failure
#5
Fatih Aydın, Serkan Bektur, Yasin Taşdelen, Yüksel Kıvrak, Ayşe Hüseyinoglu Aydın
BACKGROUND AND AIM: Erectile dysfunction (ED) is the inability or insufficiensy of penile erection that causes dissatisfaction during sexual intercourse. ED is seen in patients with heart failure (HF) ranging from %56-81 depending on the severity. Patients usually blame their cardiovascular medications for their ED. Ivabradine is used for antianginal effects and to improve exercise intolerance and decrease mortality in patients with HF. Most beta-blockers are known to cause ED but unlike beta-blockers the effect of ivabradine over ED has never been evaluated...
May 25, 2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28541137/clinical-use-of-continuous-glucose-monitoring-in-adults-with-type-2-diabetes
#6
Anders L Carlson, Deborah M Mullen, Richard M Bergenstal
Hemoglobin A1c is an excellent population health measure for the risk of vascular complications in diabetes, while continuous glucose monitoring (CGM) is a tool to help personalize a diabetes treatment plan. The value of CGM in individuals with type 1 diabetes (T1D) has been well demonstrated when compared with utilizing self-monitoring of blood glucose (SMBG) to guide treatment decisions. CGM is a tool for patients and clinicians to visualize the important role that diet, exercise, stress management, and the appropriate selection of diabetes medications can have in managing type 2 diabetes (T2D)...
May 2017: Diabetes Technology & Therapeutics
https://www.readbyqxmd.com/read/28538500/parental-perceptions-of-obesity-and-obesity-risk-associated-with-childhood-acute-lymphoblastic-leukemia
#7
Gary L Jones, Wendy McClellan, Sripriya Raman, Ashley Sherman, Erin Guest, Keith August
The prevalence of obesity and related comorbidities in survivors of childhood acute lymphoblastic leukemia (ALL) is well established and ranges anywhere from 29% to 69% depending on the study. We sought to explore the awareness of parents of survivors of childhood ALL regarding the increased risk of obesity and their perceptions regarding the overall health of their child. One hundred twenty-one parents of 99 survivors of pediatric ALL completed surveys regarding perceptions of obesity risk in survivors. Eighty percent of parents of overweight and obese survivors correctly identified their child as "a little overweight" or "overweight...
May 22, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28534495/exercise-induces-cerebral-vegf-and-angiogenesis-via-the-lactate-receptor-hcar1
#8
Cecilie Morland, Krister A Andersson, Øyvind P Haugen, Alena Hadzic, Liv Kleppa, Andreas Gille, Johanne E Rinholm, Vuk Palibrk, Elisabeth H Diget, Lauritz H Kennedy, Tomas Stølen, Eivind Hennestad, Olve Moldestad, Yiqing Cai, Maja Puchades, Stefan Offermanns, Koen Vervaeke, Magnar Bjørås, Ulrik Wisløff, Jon Storm-Mathisen, Linda H Bergersen
Physical exercise can improve brain function and delay neurodegeneration; however, the initial signal from muscle to brain is unknown. Here we show that the lactate receptor (HCAR1) is highly enriched in pial fibroblast-like cells that line the vessels supplying blood to the brain, and in pericyte-like cells along intracerebral microvessels. Activation of HCAR1 enhances cerebral vascular endothelial growth factor A (VEGFA) and cerebral angiogenesis. High-intensity interval exercise (5 days weekly for 7 weeks), as well as L-lactate subcutaneous injection that leads to an increase in blood lactate levels similar to exercise, increases brain VEGFA protein and capillary density in wild-type mice, but not in knockout mice lacking HCAR1...
May 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28533932/metabolic-parameters-and-responsiveness-of-isolated-iliac-artery-in-ldlr-mice-role-of-aerobic-exercise-training
#9
Nádia F Garcia, Amanda Cs Sponton, Maria A Delbin, Juliana M Parente, Michele M Castro, Angelina Zanesco, Camila de Moraes
Physical inactivity and dyslipidemia are considered risk factors for cardiovascular diseases. There are few studies evaluating the effects of physical exercise in small-caliber artery in a model that mimics familial hypercholesterolemia. The aim of this study was to examine the effect of exercise training, at moderate intensity, on metabolic parameters and iliac artery responsiveness in LDL(-/-) mice. Sedentary (SD) and trained (TR) mice performed AET (5 days/week, 60 minutes/day at 60-70% of maximum speed) during 8 weeks...
2017: American Journal of Cardiovascular Disease
https://www.readbyqxmd.com/read/28533692/changes-in-muscle-strength-after-diet-induced-weight-reduction-in-adult-men-with-obesity-a-prospective-study
#10
Bokun Kim, Takehiko Tsujimoto, Rina So, Xiaoguang Zhao, Sechang Oh, Kiyoji Tanaka
BACKGROUND AND OBJECTIVE: The benefits of weight reduction for musculoskeletal disorders are well understood. Steep declines in muscle mass following considerable weight reduction can decrease muscle strength and, consequently, physical performance. However, only a limited number of studies have examined the changes in muscle mass and strength in the context of interventional weight reduction programs. Thus, we investigated the influence of muscle mass decrease caused by diet-induced weight reduction on muscle strength in obese men...
2017: Diabetes, Metabolic Syndrome and Obesity: Targets and Therapy
https://www.readbyqxmd.com/read/28533314/exercise-metabolism-fuels-for-the-fire
#11
Mark Hargreaves, Lawrence L Spriet
During exercise, the supply of adenosine triphosphate (ATP) is essential for the energy-dependent processes that underpin ongoing contractile activity. These pathways involve both substrate-level phosphorylation, without any need for oxygen, and oxidative phosphorylation that is critically dependent on oxygen delivery to contracting skeletal muscle by the respiratory and cardiovascular systems and on the supply of reducing equivalents from the degradation of carbohydrate, fat, and, to a limited extent, protein fuel stores...
May 22, 2017: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/28528369/effect-of-physical-stress-on-drug-induced-sleep-endoscopy-for-obstructive-sleep-apnea
#12
Sang Min Park, Dong-Kyu Kim
Drug-induced sleep endoscopy (DISE) is a reliable upper airway evaluation tool, widely used to improve surgical results in patients with obstructive sleep apnea (OSA). Several factors, including sleeping position and depth of sedation, affect DISE findings. This study aimed to evaluate the impact of physical stress on DISE findings. Eighty-five patients with OSA underwent two DISE examinations at the same level of sedation. The "first DISE" (control group) was performed after polysomnography, while the "second DISE" (test group) performed immediately after a treadmill stress test...
May 20, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/28527694/voluntary-wheel-running-ameliorates-depression-like-behaviors-and-brain-blood-oxygen-level-dependent-signals-in-chronic-unpredictable-mild-stress-mice
#13
Peng Huang, Zhaoyang Dong, Weiliang Huang, Chuying Zhou, Weichao Zhong, Peiqian Hu, Ge Wen, Xuegang Sun, Heyu Hua, Huihui Cao, Lei Gao, Zhiping Lv
BACKGROUND: Physical exercise has been long recognized for its therapeutic effects on depressive disorders, but the underlying mechanisms remain largely unknown. In the study, we investigated whether the physical exercise by voluntary wheel running (VWR) alters depression-like behaviors and its impact on brain blood oxygen level-dependent (BOLD) signals in mice. METHODS: Adult male C57BL/6 mice were assigned to one of the following groups; (1) no exercise control (noEx), housed in a standard cage; (2) exercise (Ex), 2hours/day in a running wheel apparatus; (3) chronic unpredictable mild stress (CUMS), which was imitating adult stress; and (4) CUMS+Ex...
May 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28525788/psychosocial-relationship-status-and-quality-as-predictors-of-exercise-intervention-adherence-and-substance-use-outcomes-results-from-the-stride-ctn-0037-study
#14
Joseph M Trombello, Thomas Carmody, Tracy L Greer, Robrina Walker, Chad D Rethorst, Madhukar H Trivedi
Social/intimate relationship status and quality are associated with health-promoting behaviors, while living alone or being isolated are adversely associated with physical and mental health outcomes. Limited work has investigated how particular components of one's social environment - usual living arrangements, satisfaction with those arrangements, and global social and family discord - are related to substance use reduction and intervention adherence. We investigated these questions in 270 individuals receiving study intervention for stimulant abuse/dependence through the multi-site Stimulant Reduction Intervention using Dosed Exercise (CTN-0037) trial...
April 28, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28525338/different-training-schedules-influence-platelet-aggregation-in-show-jumping-horses
#15
C Giannetto, F Arfuso, F Fazio, E Giudice, S Di Pietro, D Bruschetta, G Piccione
Depending on the intensity, duration and type of physical exercise, equine metabolism has to adapt to nervous, cardiovascular, endocrine and respiratory system requirements. In horses, exercise and training are known to have considerable effects on the mechanisms of hemostatic system involving platelet activity. The aim of the present study was to evaluate the effect of different training schedules on platelet aggregation in 15 Italian Saddle jumping horses. Animals were divided into three equal groups: Group A was subjected to a high intensity-training program; group B to a light training program, group C included sedentary horses...
March 28, 2017: Polish Journal of Veterinary Sciences
https://www.readbyqxmd.com/read/28522101/cardiovascular-fitness-in-narcolepsy-is-inversely-related-to-sleepiness-and-the-number-of-cataplexy-episodes
#16
Martin Matoulek, Vladimír Tuka, Magdalena Fialová, Soňa Nevšímalová, Karel Šonka
OBJECTIVE: Cardiopulmonary fitness depends on daily energy expenditure or the amount of daily exercise. Patients with narcolepsy spent more time being sleepy or asleep than controls; thus we may speculate that they have a lower quantity and quality of physical activity. The aim of the present study was thus to test the hypothesis that exercise tolerance in narcolepsy negatively depends on sleepiness. PATIENTS AND METHODS: The cross-sectional study included 32 patients with narcolepsy with cataplexy, 10 patients with narcolepsy without cataplexy, and 36 age- and gender-matched control subjects, in whom a symptom-limited exercise stress test with expired gas analysis was performed...
June 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28515080/effect-of-resistance-exercise-under-conditions-of-reduced-blood-insulin-on-ampk%C3%AE-ser485-491-inhibitory-phosphorylation-and-ampk-pathway-activation
#17
Kohei Kido, Takumi Yokokawa, Satoru Ato, Koji Sato, Satoshi Fujita
Insulin stimulates skeletal muscle glucose uptake via activation of the protein kinase B/Akt (Akt) pathway. Recent studies suggest that insulin down-regulates AMP-activated protein kinase (AMPK) activity via Ser485/491 phosphorylation of the AMPK α-subunit. Thus, lower blood insulin concentrations may induce AMPK signal activation. Acute exercise is one method to stimulate AMPK activation; however, no study has examined the relationship between blood insulin levels and acute resistance exercise-induced AMPK pathway activation...
May 17, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28515057/delaying-acl-reconstruction-and-treating-with-exercise-therapy-alone-may-alter-prognostic-factors-for-5-year-outcome-an-exploratory-analysis-of-the-kanon-trial
#18
Stephanie R Filbay, Ewa M Roos, Richard B Frobell, Frank Roemer, Jonas Ranstam, L Stefan Lohmander
AIM: Identify injury-related, patient-reported and treatment-related prognostic factors for 5-year outcomes in acutely ACL-ruptured individuals managed with early reconstruction plus exercise therapy, exercise therapy plus delayed reconstruction or exercise therapy alone. METHODS: Exploratory analysis of the Knee Anterior Cruciate Ligament, Nonsurgical versus Surgical Treatment (KANON) trial (ISRCTN84752559). Relationships between prognostic factors (baseline cartilage, meniscus and osteochondral damage, baseline extension deficit, baseline patient-reported outcomes, number of rehabilitation visits, graft/contralateral ACL rupture, non-ACL surgery and ACL treatment strategy) and 5-year Knee Injury and Osteoarthritis Outcome Score (KOOS) pain, symptoms, sport/recreation and quality of life (QOL) scores were explored using multivariable linear regression...
May 17, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28514807/can-transcranial-direct-current-stimulation-modulate-psychophysiological-response-in-sedentary-men-during-vigorous-aerobic-exercise
#19
Alexandre Hideki Okano, Daniel Gomes Silva Machado, Leônidas Oliveira Neto, Luiz Fernando Farias-Junior, Pedro Moraes Dutra Agrícola, Ademir Arruda, André Igor Fonteles, Li Min Li, Eduardo B Fontes, Hassan Mohamed Elsangedy, Alexandre Moreira
This study evaluated whether transcranial direct current stimulation (tDCS) could change physiological and psychological responses during vigorous exercise with a constant load. 13 sedentary males (23.0±4.2 years; 25.6±4.2 kg/m²) took part in this randomized, crossed-over, sham-controlled, and double-blinded study. Participants underwent 2 sessions with anodal or sham tDCS (2 mA, 20 min) applied before exercise over the left temporal cortex targeting the left insular cortex. The exercise was performed at vigorous intensity (%HRmax 81...
May 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28514669/the-relationship-between-cognition-and-depressive-symptoms-and-factors-modifying-this-association-in-alzheimer-s-disease-a-multivariate-multilevel-model
#20
Bei Yang, Hongmei Yu, Min Xing, Runlian He, Ruifeng Liang, Liye Zhou
OBJECTIVES: To examine whether there was a bidirectional association between cognition and depressive symptoms in Alzheimer's disease (AD), and to explore the role of socio-demographic factors and daily performance in this association. METHODS: We conducted a longitudinal study of 104 community-dwelling patients with confirmed AD from Taiyuan, China. We assessed cognition and depressive symptoms (dependent variables) with the Montreal Cognitive Assessment (MoCA) and the Geriatric Depression Scale-30 (GDS-30), respectively...
May 10, 2017: Archives of Gerontology and Geriatrics
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