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Ergometry

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https://www.readbyqxmd.com/read/28101567/influence-of-arm-crank-ergometry-on-development-of-lymphedema-in-breast-cancer-patients-after-axillary-dissection-a-randomized-controlled-trail
#1
Thorsten Schmidt, Jette Berner, Walter Jonat, Burkhard Weisser, Christioph Röcken, Marion van Mackelenbergh, Christoph Mundhenke
OBJECTIVE: To investigate the safety and efficacy of arm crank ergometry in breast cancer patients after axillary lymph node dissection, with regard to changes in bioelectrical impedance analysis, arm circumference, muscular strength, quality of life and fatigue. DESIGN: Randomized controlled clinical intervention trial. SUBJECTS: Forty-nine patients with breast cancer after axillary lymph node dissection. METHODS: Arm crank ergometer training twice-weekly was compared with usual care over 12 weeks...
January 19, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28035016/esmolol-infusion-versus-propranolol-infusion-effects-on-heart-rate-and-blood-pressure-in-healthy-volunteers
#2
Matthew D Muller, Tariq Ali Ahmad, Alvaro F Vargas Pelaez, David N Proctor, Anthony S Bonavia, J Carter Luck, Stephan R Maman, Amanda J Ross, Urs A Leuenberger, Patrick M McQuillan
Despite its widespread clinical use, the β1 adrenergic receptor antagonist esmolol hydrochloride is not commonly used in human physiology research and the effective dose (compared to the nonselective β-blocker propranolol) is unclear. In four separate studies, we used cycle ergometry exercise and infusions of isoproterenol and epinephrine to test the heart rate (HR)- lowering effect of esmolol compared to propranolol and saline in healthy humans. In Cohort 1, both esmolol (ΔHR: 57 ± 6) and propranolol (ΔHR: 56 ± 7) attenuated exercise tachycardia compared to saline (ΔHR: 88 ± 17)...
December 29, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28025662/the-effect-of-a-live-high-train-high-exercise-regimen-on-behavioural-temperature-regulation
#3
Shawnda A Morrison, Urša Ciuha, Daniela Zavec-Pavlinić, Ola Eiken, Igor B Mekjavic
PURPOSE: Acute hypoxia alters the threshold for sensation of cutaneous thermal stimuli. We hypothesised that hypoxia-induced alterations in cutaneous temperature sensation may lead to modulation of the perception of temperature, ultimately influencing behavioural thermoregulation and that the magnitude of this effect could be influenced by daily physical training. METHODS: Fourteen men were confined 10 days to a normobaric hypoxic environment (PIO2 = 88.2 ± 0...
December 26, 2016: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28009787/prevalence-of-exercise-induced-arterial-hypoxemia-in-distance-runners-at-sea-level
#4
Keren Constantini, David A Tanner, Timothy P Gavin, Craig A Harms, Joel M Stager, Robert F Chapman
PURPOSE: It has been reported that ~50% of endurance-trained men demonstrate exercise induced arterial oxyhemoglobin hypoxemia (EIAH) during heavy exercise. However, this often-cited prevalence rate comes from a single study using a cohort of 25 highly trained men who completed maximal cycle ergometry. As arterial oxyhemoglobin saturation (SpO2) during maximal exercise is reported to be significantly lower during treadmill vs. cycle ergometry in the same subjects, we hypothesized that the prevalence of EIAH would be greater than previously reported (and commonly referenced) in a larger cohort of highly endurance-trained men during maximal treadmill running...
December 22, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27997623/the-coupling-of-peripheral-blood-pressure-and-ventilatory-responses-during-exercise-in-young-adults-with-cystic-fibrosis
#5
Erik H Van Iterson, Courtney M Wheatley, Sarah E Baker, Thomas P Olson, Wayne J Morgan, Eric M Snyder
PURPOSE: Cystic fibrosis (CF) is commonly recognized as a pulmonary disease associated with reduced airway function. Another primary symptom of CF is low exercise capacity where ventilation and gas-exchange are exacerbated. However, an independent link between pathophysiology of the pulmonary system and abnormal ventilatory and gas-exchange responses during cardiopulmonary exercise testing (CPET) has not been established in CF. Complicating this understanding, accumulating evidence suggests CF demonstrate abnormal peripheral vascular function; although, the clinical implications are unclear...
2016: PloS One
https://www.readbyqxmd.com/read/27993287/addition-of-vitamin-b12-to-exercise-training-improves-cycle-ergometer-endurance-in-advanced-copd-patients-a-randomized-and-controlled-study
#6
Fernanda Viana Paulin, Alessandro Moura Zagatto, Gaspar R Chiappa, Paulo de Tarso Müller
Vitamin B12 is essential in the homocysteine, mitochondrial, muscle and hematopoietic metabolisms, and its effects on exercise tolerance and kinetics adjustments of oxygen consumption (V'O2p) in rest-to-exercise transition in COPD patients are unknown. This randomized, double-blind, controlled study aimed to verify a possible interaction between vitamin B12 supplementation and these outcomes. After recruiting 69 patients, 35 subjects with moderate-to-severe COPD were eligible and 32 patients concluded the study, divided into four groups (n = 8 for each group): 1...
January 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/27992070/exercise-for-haemophilia
#7
REVIEW
Karen Strike, Kathy Mulder, Rojer Michael
BACKGROUND: Haemophilia is a bleeding disorder associated with haemorrhaging into joints and muscles. Exercise is often used to aid recovery after bleeds, and to improve joint function in the presence of arthropathy. OBJECTIVES: Our objective was to systematically review the available evidence on the safety and effectiveness of exercise for people with haemophilia. SEARCH METHODS: We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group's Coagulopathies Trials Register and electronic databases PubMed, OVID-Embase, and CINAHL...
19, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27938891/reference-standards-for-cardiorespiratory-fitness-measured-with-cardiopulmonary-exercise-testing-using-cycle-ergometry-data-from-the-fitness-registry-and-the-importance-of-exercise-national-database-friend-registry
#8
Leonard A Kaminsky, Mary T Imboden, Ross Arena, Jonathan Myers
The importance of cardiorespiratory fitness (CRF) is well established. This report provides newly developed standards for CRF reference values derived from cardiopulmonary exercise testing (CPX) using cycle ergometry in the United States. Ten laboratories in the United States experienced in CPX administration with established quality control procedures contributed to the "Fitness Registry and the Importance of Exercise: A National Database" (FRIEND) Registry from April 2014 through May 2016. Data from 4494 maximal (respiratory exchange ratio, ≥1...
December 7, 2016: Mayo Clinic Proceedings
https://www.readbyqxmd.com/read/27931056/-guideline-s2k-awmf-of-the-deutsche-gesellschaft-f%C3%A3-r-pneumologie-und-beatmungsmedizin-and-the-deutsche-gesellschaft-f%C3%A3-r-arbeitsmedizin-und-umweltmedizin-diagnostics-and-expert-opinion-in-the-occupational-disease-no-4101-silicosis-including-coal-worker-s-pneumoconiosis
#9
X Baur, M Heger, R M Bohle, K G Hering, K Hofmann-Preiß, D Nowak, A Tannapfel, H Teschler, T Voshaar, T Kraus
During the last 1.5 years an update of the guideline on silicosis was made by an interdisciplinary working group. New medical and scientific knowledge and the experience in expert opinion practice were taken into account.By preparing the initial guideline in 2010 standardization of diagnostics and adaption of the "Moers convention" which was not based on medical knowledge was in the focus, whereas the current update deals with fine emendation and extension, especially of the compensation rate (adaption with the Reichenhall recommendation)...
December 2016: Pneumologie
https://www.readbyqxmd.com/read/27927683/pharmacokinetics-and-pharmacodynamics-of-inorganic-nitrate-in-heart-failure-with-preserved-ejection-fraction
#10
Payman Zamani, Victor X Tan, Haideliza Soto-Calderon, Melissa Beraun, Jeffrey Brandimarto, Lien Trieu, Swapna Varakantam, Paschalis-Thomas Doulias, Raymond R Townsend, Jesse Chittams, Kenneth B Margulies, Thomas P Cappola, David C Poole, Harry Ischiropoulos, Julio A Chirinos
RATIONALE: Nitrate-rich beetroot juice has been shown to improve exercise capacity in Heart Failure with Preserved Ejection Fraction (HFpEF), but studies using pharmacologic preparations of inorganic nitrate are lacking. OBJECTIVE: To determine: (1) the dose-response effect of potassium nitrate (KNO3) on exercise capacity; (2) the population-specific pharmacokinetic and safety profile of KNO3 in HFpEF. METHODS AND RESULTS: We randomized 12 subjects with HFpEF to oral KNO3 (n=9) or potassium chloride (KCl, n=3)...
December 7, 2016: Circulation Research
https://www.readbyqxmd.com/read/27925037/nutrition-assessment-modal-ergometry
#11
D F Ribas, G Kelman, R F Buzzini, R S Simões, W M Bernardo
No abstract text is available yet for this article.
October 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27884959/cardiac-responses-to-exercise-distinguish-postural-orthostatic-tachycardia-syndrome-variants
#12
Paolo T Pianosi, Darrell R Schroeder, Philip R Fischer
We previously showed that one-third of adolescents with postural orthostatic tachycardia syndrome (POTS) have hyperkinetic circulation. In a subsequent cohort, we compare participants with POTS grouped according to cardiac output (Q˙) versus oxygen uptake (V˙O2) function, whose circulatory response to exercise lay at the lower end of this distribution. We hypothesized that such grouping determines the circulatory response to incremental-protocol, upright, cycle ergometry by whatever blend of flow and resistance adjustments best maintains normal blood pressure...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27858577/long-term-endurance-training-increases-serum-cathepsin-s-and-decreases-il-6-and-hscrp-levels
#13
Michael Sponder, Ioana-Alexandra Campean, Michael Emich, Monika Fritzer-Szekeres, Brigitte Litschauer, Jutta Bergler-Klein, Senta Graf, Jeanette Strametz-Juranek
Cathepsin S (CS) was shown to play a key role in cancer progression, atherosclerosis, heart valve disease, insulin resistance and diabetes mellitus. The present prospective study aimed to investigate the influence of sports on CS, interleukin-6 (Il-6) and high-sensitivity C-reactive protein (hsCRP) levels. Ninety-eight of 109 participants completed the study. Ergometries were performed at baseline and after 8 months to evaluate/quantify the performance gain. Blood samples were taken at baseline and every 2 months...
November 18, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27857959/head-temperature-modulates-thermal-behavior-in-the-cold-in-humans
#14
Toby Mündel, Aaron Raman, Zachary J Schlader
We tested the hypothesis that skin temperature, specifically of the head, is capable of modulating thermal behavior during exercise in the cold. Following familiarization 8 young, healthy, recreationally active males completed 3 trials, each consisting of 30 minutes of self-paced cycle ergometry in 6°C. Participants were instructed to control their exercise work rate to achieve and maintain thermal comfort. On one occasion participants wore only shorts and shoes (Control) and on the 2 other occasions their head was either warmed (Warming) or cooled (Cooling)...
April 2016: Temperature: Multidisciplinary Biomedical Journal
https://www.readbyqxmd.com/read/27856712/rates-of-performance-loss-and-neuromuscular-activity-in-men-and-women-during-cycling-evidence-for-a-common-metabolic-basis-of-muscle-fatigue
#15
Christopher W Sundberg, Sandra K Hunter, Matthew W Bundle
The durations that muscular force and power outputs can be sustained until failure fall predictably on an exponential decline between an individual's 3-s burst maximum to the maximum performance they can sustain aerobically. The exponential time constants describing these rates of performance loss are similar across individuals suggesting that a common metabolically-based mechanism governs muscle fatigue; however, these conclusions come from studies mainly on men. To test whether the same physiological understanding can be applied to women, we compared the performance-duration relationships and neuromuscular activity between 7 men (23...
November 17, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27852810/multicomponent-cardiac-rehabilitation-in-patients-after-transcatheter-aortic-valve-implantation-predictors-of-functional-and-psychocognitive-recovery
#16
Sarah Eichler, Annett Salzwedel, Rona Reibis, Jörg Nothroff, Axel Harnath, Martin Schikora, Christian Butter, Karl Wegscheider, Heinz Völler
BACKGROUND: In the last decade, transcatheter aortic valve implantation has become a promising treatment modality for patients with aortic stenosis and a high surgical risk. Little is known about influencing factors of function and quality of life during multicomponent cardiac rehabilitation. METHODS: From October 2013 to July 2015, patients with elective transcatheter aortic valve implantation and a subsequent inpatient cardiac rehabilitation were enrolled in the prospective cohort multicentre study...
November 16, 2016: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/27808004/interval-training-elicits-higher-enjoyment-versus-moderate-exercise-in-persons-with-spinal-cord-injury
#17
Todd A Astorino, Jacob S Thum
BACKGROUND: High intensity interval training (HIIT) is a robust and time-efficient approach to improve multiple health indices including maximal oxygen uptake (VO2max). Despite the intense nature of HIIT, data in untrained adults report greater enjoyment of HIIT versus continuous exercise (CEX). However, this has yet to be investigated in persons with spinal cord injury (SCI). OBJECTIVE: To examine differences in enjoyment in response to CEX and HIIT in persons with SCI...
November 3, 2016: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/27804230/active-individuals-have-high-mitochondrial-content-and-oxidative-markers-in-their-abdominal-subcutaneous-adipose-tissue
#18
Maria F Pino, Stephanie A Parsons, Steven R Smith, Lauren M Sparks
OBJECTIVE: Exercise training (training) effects on white adipose tissue (WAT) thermogenic and oxidative capacities in humans are inconclusive. This study aimed to investigate whether an active lifestyle is characterized by thermogenic and/or oxidative transcriptional markers in human WAT. METHODS: In vivo maximal muscle ATP synthetic rates (ATPmax) were measured by (31) P-MRS, body composition by DXA, and peak oxygen uptake (VO2 peak) by cycle ergometry in active (n = 7) and sedentary (SED) individuals before and after 3 weeks of training (n = 9, SED only)...
November 2, 2016: Obesity
https://www.readbyqxmd.com/read/27793061/cardiorespiratory-kinetics-determined-by-pseudo-random-binary-sequences-comparisons-between-walking-and-cycling
#19
J Koschate, U Drescher, L Thieschäfer, O Heine, K Baum, U Hoffmann
This study aims to compare cardiorespiratory kinetics as a response to a standardised work rate protocol with pseudo-random binary sequences between cycling and walking in young healthy subjects. Muscular and pulmonary oxygen uptake (V̇O2) kinetics as well as heart rate kinetics were expected to be similar for walking and cycling. Cardiac data and V̇O2 of 23 healthy young subjects were measured in response to pseudo-random binary sequences. Kinetics were assessed applying time series analysis. Higher maxima of cross-correlation functions between work rate and the respective parameter indicate faster kinetics responses...
December 2016: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/27776081/acute-low-dose-caffeine-supplementation-increases-electromyographic-fatigue-threshold-in-healthy-men
#20
RANDOMIZED CONTROLLED TRIAL
Jacob J Morse, Gramos Pallaska, Patrick R Pierce, Travis M Fields, Sujay S Galen, Moh H Malek
Morse, JJ, Pallaska, G, Pierce, PR, Fields, TM, Galen, SS, and Malek, MH. Acute low-dose caffeine supplementation increases electromyographic fatigue threshold in healthy men. J Strength Cond Res 30(11): 3236-3241, 2016-The purpose of this study is to determine whether consumption of a single low-dose caffeine drink will delay the onset of the electromyographic fatigue threshold (EMGFT) in the superficial quadriceps femoris muscles. We hypothesize that the EMGFT values for the caffeine condition will be significantly higher than the EMGFT values for the placebo condition...
November 2016: Journal of Strength and Conditioning Research
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