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https://www.readbyqxmd.com/read/28338405/physiological-responses-to-treadmill-running-with-body-weight-support-in-hypoxia-compared-to-normoxia
#1
Ben J Lee, Charles Douglas Thake
CONTEXT: Anecdotal reports suggest elite sports clubs combine lower body positive pressure (LBPP) rehabilitation with a hypoxic stimulus in order to maintain or increase physiological and metabolic strain, which are reduced during LBPP. However the effects of hypoxia on cardiovascular and metabolic response during LBPP rehabilitation is unknown. OBJECTIVE: Evaluate the use of normobaric hypoxia as a means to increase physiological strain during body weight supported (BWS) running...
March 24, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28337151/a-reduction-in-maximal-incremental-exercise-test-duration-48-h-post-downhill-run-is-associated-with-muscle-damage-derived-exercise-induced-pain
#2
Bryna C R Chrismas, Lee Taylor, Jason C Siegler, Adrian W Midgley
Purpose: To examine whether exercise induced muscle damage (EIMD) and muscle soreness reduce treadmill maximal incremental exercise (MIE) test duration, and true maximal physiological performance as a consequence of exercise induced pain (EIP) and perceived effort. Methods: Fifty (14 female), apparently healthy participants randomly allocated into a control group (CON, n = 10), or experimental group (EXP, n = 40) visited the laboratory a total of six times: visit 1 (familiarization), visit 2 (pre 1), visit 3 (pre 2), visit 4 (intervention), visit 5 (24 h post) and visit 6 (48 h post)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28330661/association-between-high-sensitivity-cardiac-troponin-levels-and-myocardial-ischemia-during-mental-stress-and-conventional-stress
#3
Muhammad Hammadah, Ibhar Al Mheid, Kobina Wilmot, Ronnie Ramadan, Ayman Alkhoder, Malik Obideen, Naser Abdelhadi, Shuyang Fang, Ijeoma Ibeanu, Pratik Pimple, Heval Mohamed Kelli, Amit J Shah, Brad Pearce, Yan Sun, Ernest V Garcia, Michael Kutner, Qi Long, Laura Ward, J Douglas Bremner, Fabio Esteves, Paolo Raggi, David Sheps, Viola Vaccarino, Arshed A Quyyumi
OBJECTIVES: This study sought to investigate whether patients with mental stress-induced myocardial ischemia will have high resting and post-mental stress high-sensitivity cardiac troponin I (hs-cTnI). BACKGROUND: Hs-cTnI is a marker of myocardial necrosis, and its elevated levels are associated with adverse outcomes. Hs-cTnI levels may increase with exercise in patients with coronary artery disease. Mental stress-induced myocardial ischemia is also linked to adverse outcomes...
March 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28330378/effects-of-exercise-training-on-kinin-receptors-expression-in-rats-with-myocardial-infarction
#4
Mei Shen, Min Yu, Jingya Li, Li Ma
OBJECTIVES: The objective of this study is to determine the role of kinin B1 and B2 receptors in exercise-induced cardiac muscle angiogenesis. METHOD: Thirty Wistar rats were randomly assigned to the control group, the myocardial infarction group and the exercise training group (myocardial infarction model was made and received 30 min exercise training on a treadmill). After 4 weeks of experiment, cardiac muscle was harvested. RESULTS: B1 and B2 receptor mRNA and protein levels in the exercise-training group were significantly higher than those in the myocardial infarction group, which were higher than those in the control group...
March 23, 2017: Archives of Physiology and Biochemistry
https://www.readbyqxmd.com/read/28329285/upright-treadmill-vs-semi-supine-bicycle-exercise-echocardiography-to-provoke-obstruction-in-symptomatic-hypertrophic-cardiomyopathy-a-pilot-study
#5
Patricia Reant, Maxence Dufour, Jerome Peyrou, Amelie Reynaud, Caroline Rooryck, Marina Dijos, Cecile Vincent, Claire Cornolle, Raymond Roudaut, Stephane Lafitte
Aims: Recent findings regarding hypertrophic cardiomyopathy (HCM) haemodynamics emphasized the relationship between symptoms, left ventricular outflow tract obstruction (LVOTO), and the preload condition as the venous return level. As various types of exercises have different effects on peripheral vascular beds, this study sought to compare upright treadmill exercise echocardiography (EE) to semi-supine bicycle EE in maximum provoked LVOTO in HCM patients. Methods and results: Semi-supine bicycle and upright treadmill EE were prospectively performed in HCM patients with New York Heart Association functional Class II...
February 17, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28323991/whole-body-vibration-mimics-the-metabolic-effects-of-exercise-in-male-leptin-receptor-deficient-mice
#6
Meghan E McGee-Lawrence, Karl H Wenger, Sudipta Misra, Catherine L Davis, Norman K Pollock, Mohammed Elsalanty, Kehong Ding, Carlos M Isales, Mark W Hamrick, Joanna R Erion, Marlena Wosiski-Kuhn, Phonepasong Arounleut, Mark P Mattson, Roy G Cutler, Jack C Yu, Alexis M Stranahan
Whole-body vibration has gained attention as a potential exercise mimetic, but direct comparisons with the metabolic effects of exercise are scarce. To determine whether whole-body vibration recapitulates the metabolic and osteogenic effects of physical activity, we exposed male wildtype (Wt) and leptin receptor deficient (db/db) mice to daily treadmill exercise or whole-body vibration for three months. Body weights were analyzed and compared with Wt and db/db mice that remained sedentary. Glucose and insulin tolerance testing revealed comparable attenuation of hyperglycemia and insulin resistance in db/db mice following treadmill exercise or whole-body vibration...
March 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323283/treadmill-exercise-suppressed-stress-induced-dendritic-spine-elimination-in-mouse-barrel-cortex-and-improved-working-memory-via-bdnf-trkb-pathway
#7
K Chen, L Zhang, M Tan, C S W Lai, A Li, C Ren, K-F So
Stress-related memory deficit is correlated with dendritic spine loss. Physical exercise improves memory function and promotes spinogenesis. However, no studies have been performed to directly observe exercise-related effects on spine dynamics, in association with memory function. This study utilized transcranial two-photon in vivo microscopy to investigate dendritic spine formation and elimination in barrel cortex of mice under physical constrain or naive conditions, followed by memory performance in a whisker-dependent novel texture discrimination task...
March 21, 2017: Translational Psychiatry
https://www.readbyqxmd.com/read/28321639/brain-oxygenation-declines-in-elite-kenyan-runners-during-a-maximal-interval-training-session
#8
Jordan Santos-Concejero, F Billaut, L Grobler, J Oliván, T D Noakes, R Tucker
PURPOSE: The purpose of this study was to characterise the cerebral oxygenation (Cox) response during a high-intensity interval training session in Kenyan runners, and to examine any relationship with running performance. METHODS: 15 Kenyan runners completed a 5-km time trial (TT) and a Fatigue Training Test on a treadmill (repeated running bouts of 1-km at a pace 5% faster than their mean 5-km TT pace with a 30-s recovery until exhaustion). Changes in Cox were monitored via near-infrared spectroscopy through concentration changes in oxy- and deoxy-haemoglobin (Δ[O2Hb] and Δ[HHb]), tissue oxygenation index (TOI), and total hemoglobin index (nTHI)...
March 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28321240/validation-of-veterans-specific-activity-questionnaire-to-assess-exercise-tolerance-of-chinese-elderly-with-coronary-heart-disease
#9
Yan Wang, Jing-Jing Shi, Bo-Zhong Wang
OBJECTIVE: The Veterans Specific Activity Questionnaire (VSAQ) has been used to assess exercise tolerance. Nevertheless, there is no validated Chinese version. The aim of this study is to determine whether a questionnaire-based method using the Chinese version of VSAQ (the modified VSAQ) is a practical tool to assess exercise tolerance of Chinese elderly with coronary heart disease. METHODS: One hundred thirty consecutive elderly patients who were diagnosed with coronary heart disease (CHD) (mean age 68...
December 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28320889/trunk-muscle-activation-during-movement-with-a-new-exercise-device-for-lumbo-pelvic-reconditioning
#10
Tobias Weber, Dorothée Debuse, Sauro E Salomoni, Edith L Elgueta Cancino, Enrico De Martino, Nick Caplan, Volker Damann, Jonathan Scott, Paul W Hodges
Gravitational unloading leads to adaptations of the human body, including the spine and its adjacent structures, making it more vulnerable to injury and pain. The Functional Re-adaptive Exercise Device (FRED) has been developed to activate the deep spinal muscles, lumbar multifidus (LM) and transversus abdominis (TrA), that provide inter-segmental control and spinal protection. The FRED provides an unstable base of support and combines weight bearing in up-right posture with side alternating, elliptical leg movements, without any resistance to movement...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/28320636/the-significance-of-equivocal-exercise-treadmill-ecg-for-intermediate-risk-chest-pain-assessment-insight-from-coronary-ct-angiography-data
#11
Gary T E Lau, Henry Wei, Jo Wickham, Andrew C Y To
BACKGROUND: Exercise treadmill test (ETT) is commonly the first-line investigation in troponin-negative chest pain patients. Inconclusive results are common and often lead to repeated functional testings. Coronary computed tomographic angiography (CCTA) has excellent negative predictive value for coronary artery disease detection and may play an important role in their diagnostic workup. We aim to analyse ETT and CCTA findings to understand their modern roles in intermediate risk chest pain population with inconclusive ETT...
March 1, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28320258/sex-differences-in-oxidative-stress-after-eccentric-and-concentric-exercise
#12
Magdalena Wiecek, Marcin Maciejczyk, Jadwiga Szymura, Zbigniew Szygula
OBJECTIVES: Comparison of redox balance changes in the blood of women and men as a result of submaximal eccentric (ECC) and concentric (CONC) efforts. METHODS: 10 women and 10 men performed three 45-minute submaximal treadmill runs at constant velocities (downhill run - ECC, uphill run - CONC and level run). Prior to the 45-minute exercises, after their completion and following 24 hours of recovery, the concentration of lactate, oxidized low-density lipoprotein (ox-LDL), 3-nitrotyrosine, uric acid (UA) and the white blood cell count (WBC), neutrophil (NEUT), lymphocyte (LYMPH) and monocyte content in the blood were determined...
March 20, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28320059/effects-of-treadmill-exercise-on-advanced-osteoarthritis-pain-in-rats
#13
Joshua Allen, Ian Imbert, Joshua Havelin, Terry Henderson, Glenn Stevenson, Lucy Liaw, Tamara King
OBJECTIVE: Exercise is commonly recommended for patients with osteoarthritis (OA) pain. However, whether exercise is beneficial in ameliorating persistent NSAID-resistant ongoing pain associated with advanced OA is unknown. METHODS: Rats treated with intra-articular monosodium iodoacetate (MIA) or saline underwent treadmill exercise or remained sedentary starting 10 days post-injection. Tactile sensory thresholds and weight bearing were assessed followed by radiographs at weekly intervals...
March 20, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28319508/exercise-combined-with-ultrasound-attenuates-neuropathic-pain-in-rats-associated-with-downregulation-of-il-6-and-tnf-%C3%AE-but-with-upregulation-of-il-10
#14
Po-Ching Huang, Kun-Ling Tsai, Yu-Wen Chen, Heng-Teng Lin, Ching-Hsia Hung
BACKGROUND: Although there are several evidences that suggest efficacies of therapeutic ultrasound (TU) or treadmill exercise (TE) to alleviate nerve injury-associated pain, molecular mechanisms are less clear. We aimed to investigate the impact of TU and/or TE on neuropathic pain induced by chronic constriction injury (CCI) of the sciatic nerve and their roles of proinflammatory and anti-inflammatory cytokines. METHODS: Rats were randomly divided into (n = 10 per group) sham operation (sham), CCI procedure followed by false application of TU (CCI + TU0), CCI procedure followed by false application of TU and TE (CCI + TU0 + TE), CCI, and CCI procedure followed by TU alone (CCI + TU), TE alone (CCI + TE), or both TU and TE (CCI + TU + TE) groups...
March 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28319140/role-of-muscle-il-6-in-gender-specific-metabolism-in-mice
#15
Amalia Molinero, Antonio Fernandez-Perez, Aina Mogas, Mercedes Giralt, Gemma Comes, Olaya Fernandez-Gayol, Mario Vallejo, Juan Hidalgo
The aim of the present work was to further explore the physiological roles of muscle-derived IL-6. Adult-floxed and conditional skeletal muscle IL-6 knock out male and female mice were used to study energy expenditure (indirect calorimetry at rest and during treadmill exercise, and body temperature cycle during the light phase) and energy intake (response to fast/refeeding). We also evaluated the responses to leptin and the activity of the insulin signalling pathway in skeletal muscle and liver by phosphorylation of Akt at Ser 473...
2017: PloS One
https://www.readbyqxmd.com/read/28317171/combination-of-change-in-hematological-parameters-with-exercise-stress-test-to-predict-coronary-artery-disease
#16
Ahmet Korkmaz, Abdulkadir Yıldız, Pınar Türker Duyuler, Serkan Duyuler, Samet Yılmaz, Funda Basyigit, Ozgul Ucar Elalmis, Umit Guray, Mehmet Ileri
OBJECTIVE: Treadmill exercise stress testing for identifying patients with a higher likelihood of coronary artery disease (CAD) before elective coronary angiography is recommended in the current guidelines. In this study, we aimed to evaluate the changes in the hematological parameters before and after exercise stress test in relation with the presence of CAD. METHODS: A total of 113 patients with chest pain who underwent treadmill exercise testing and coronary angiography were included in this study...
March 20, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28316113/the-utility-of-exercise-testing-in-risk-stratification-of-asymptomatic-patients-with-type-1-brugada-pattern
#17
Muthiah Subramanian, Mukund A Prabhu, M S Harikrishnan, Saritha S Shekhar, Praveen G Pai, K U Natarajan
INTRODUCTION: Risk stratification of asymptomatic patients with a Brugada type 1 ECG pattern remains an unresolved clinical conundrum. In contrast to provocative pharmacological testing in Brugada syndrome, there is limited data on the role of exercise stress testing as a risk stratification modality. The objective of this study was to evaluate the utility of exercise testing in asymptomatic patients with type 1 Brugada pattern to prognosticate major arrhythmic events(MAE) during follow-up...
March 18, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28306685/effects-of-a-6-week-aquatic-treadmill-exercise-program-on-cardiorespiratory-fitness-and-walking-endurance-in-subacute-stroke-patients-a-pilot-trial
#18
Eun Young Han, Sang Hee Im
OBJECTIVE: To assess the feasibility and safety of a 6-week course of water walking performed using a motorized aquatic treadmill in individuals with subacute stroke for cardiorespiratory fitness, walking endurance, and activities of daily living. METHODS: Twenty subacute stroke patents were randomly assigned to aquatic treadmill exercise (ATE) or land-based exercise (LBE). The ATE group (n = 10) performed water-based aerobic exercise on a motorized aquatic treadmill, and the LBE group (n = 10) performed land-based aerobic exercise on a cycle ergometer...
March 15, 2017: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/28304305/combined-dual-task-gait-training-and%C3%A2-aerobic-exercise-to-improve-cognition-%C3%A2-mobility-and%C3%A2-vascular-health-in%C3%A2-community-dwelling-older-adults-at%C3%A2-risk-for-future-cognitive-decline1
#19
Michael A Gregory, Narlon C Boa Sorte Silva, Dawn P Gill, Cheri L McGowan, Teresa Liu-Ambrose, J Kevin Shoemaker, Vladimir Hachinski, Jeff Holmes, Robert J Petrella
This 6-month experimental case series study investigated the effects of a dual-task gait training and aerobic exercise intervention on cognition, mobility, and cardiovascular health in community-dwelling older adults without dementia. Participants exercised 40 min/day, 3 days/week for 26 weeks on a Biodex GaitTrainer2 treadmill. Participants were assessed at baseline (V0), interim (V1: 12-weeks), intervention endpoint (V2: 26-weeks), and study endpoint (V3: 52-weeks). The study outcomes included: cognition [executive function (EF), processing speed, verbal fluency, and memory]; mobility: usual & dual-task gait (speed, step length, and stride time variability); and vascular health: ambulatory blood pressure, carotid arterial compliance, and intima-media thickness (cIMT)...
March 10, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28303967/effects-of-exercise-based-cardiac-rehabilitation-in-patients-after-percutaneous-coronary-intervention-a-meta-analysis-of-randomized-controlled-trials
#20
Xinyu Yang, Yanda Li, Xiaomeng Ren, Xingjiang Xiong, Lijun Wu, Jie Li, Jie Wang, Yonghong Gao, Hongcai Shang, Yanwei Xing
In this study, we assessed the effect of rehabilitation exercise after percutaneous coronary intervention (PCI) in patients with coronary heart disease (CHD). We performed a meta-analysis to determine the effects of exercise in patients after PCI. The Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, the Embase database, China National Knowledge Internet (CNKI), China Biology Medicine (CBM), and the Wanfang Database were searched for randomized controlled trials (RCTs). The key words used for the searches were PCI, exercise, walking, jogging, Tai Chi, and yoga...
March 17, 2017: Scientific Reports
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