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https://www.readbyqxmd.com/read/28422523/can-the-lamberts-submaximal-cycle-test-reflect-overreaching-in-professional-cyclists
#1
Lieselot Decroix, Robert P Lamberts, Romain Meeusen
PURPOSE: The Lamberts and Lambert Submaximal Cycle Test (LSCT) consists of 3 stages during which cyclist's cycle for 6 minutes at 60%, 6 minutes at 80% and 3 minutes at 90% of their maximal heart rate, followed by one-minute recovery. It was the aim of this study to determine if the LSCT is able to reflect a state of functional overreaching in professional female cyclists during an 8-day training camp and the following recovery days. METHODS: Six professional female cyclists performed an LSCT on day 1, day 5 and day 8 of the training camp and 3 days after the training camp...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28422346/does-limb-partitioning-and-positioning-affect-acute-cardiorespiratory-responses-during-strength-exercises-in-patients-with-copd
#2
Priscila Robles, Tamara Araujo, Dina Brooks, Karl Zabjek, Tania Janaudis-Ferreira, Susan Marzolini, Roger Goldstein, Sunita Mathur
BACKGROUND AND OBJECTIVE: Cardiorespiratory responses and symptoms in response to endurance exercise in patients with COPD vary with the number and position of involved limbs. Responses to such variations have never been quantified for strength exercises. We therefore assessed acute cardiorespiratory responses during brief bouts of weight lifting exercises. METHODS: We compared double- versus single-limb leg extensions and arm elevations, as well as arm elevation done above or below shoulder level in patients with moderate to severe COPD (n = 10, 6 males, 66 (8...
April 19, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28421409/six-minute-walk-test-for-assessing-physical-functional-capacity-in-chronic-heart-failure
#3
REVIEW
Huiyun Du, Parichat Wonggom, Jintana Tongpeth, Robyn A Clark
PURPOSE OF THE REVIEW: The six-minute walk test (6MWT) is a submaximal exercise test for evaluating physical functional capacity. This review aims to report the research on the use of the 6MWT in chronic heart failure (CHF) that has been published in the past 5 years. RECENT FINDINGS: The 6MWT distance does not accurately reflect peak VO2. Minimal clinically important difference in the 6MWT distance, and additional measurements, such as heart rate recovery, can assist in the interpretation of the 6MWT distance, so management decisions can be made...
April 18, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28420825/colchicine-improves-survival-left-ventricular-remodeling-and-chronic-cardiac-function-after-acute-myocardial-infarction
#4
Koichiro Fujisue, Koichi Sugamura, Hirofumi Kurokawa, Junichi Matsubara, Masanobu Ishii, Yasuhiro Izumiya, Koichi Kaikita, Seigo Sugiyama
BACKGROUND: Several studies have reported that colchicine attenuated the infarct size and inflammation in acute myocardial infarction (MI). However, the sustained benefit of colchicine administration on survival and cardiac function after MI is unknown. It was hypothesized that the short-term treatment with colchicine could improve survival and cardiac function during the recovery phase of MI.Methods and Results:MI was induced in mice by permanent ligation of the left anterior descending coronary artery...
April 18, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28419834/sex-differences-in-autonomic-response-and-situational-appraisal-of-a-competitive-situation-in-young-adults
#5
Diana Abad-Tortosa, Adrián Alacreu-Crespo, Raquel Costa, Alicia Salvador, Miguel Ángel Serrano
Competition is a social stressor capable of eliciting physiological responses modulated by the outcome. The main objective of this study was to analyze the psychophysiological changes associated with competition and its outcome in men and women, taking into account the role of situational appraisal. To this end, 112 young people (46 men and 66 women) participated in a laboratory task in a competitive or non-competitive condition, while Blood Pressure (BP), Heart Rate Variability (HRV), and Skin Conductance (SC) responses were measured...
April 15, 2017: Biological Psychology
https://www.readbyqxmd.com/read/28416899/the-efficacy-of-a-discontinuous-graded-exercise-test-in-measuring-peak-oxygen-uptake-in-children-aged-8-to-10-years
#6
D Lambrick, J Jakeman, R Grigg, S Kaufmann, J Faulkner
As children's natural activity patterns are highly intermittent in nature, and characterised by rapid changes from rest to vigorous physical activity, discontinuous exercise tests may be considered ecologically valid for this population group. This study compared the peak physiological responses from a discontinuous and continuous graded exercise test (GXT_D, GXT_C, respectively) during treadmill exercise in children. Twenty-one healthy children (9.6 ± 0.6 y) completed GXT_D and GXT_C in a randomised order, separated by 72-hours...
March 2017: Biology of Sport
https://www.readbyqxmd.com/read/28416890/relationship-between-perceived-exertion-during-exercise-and-subsequent-recovery-measurements
#7
T N Mann, R P Lamberts, A Nummela, M I Lambert
The return towards resting homeostasis in the post-exercise period has the potential to represent the internal training load of the preceding exercise bout. However, the relative potential of metabolic and autonomic recovery measurements in this role has not previously been established. Therefore the aim of this study was to investigate which of 4 recovery measurements was most closely associated with Borg's Rating of Perceived Exertion (RPE), a measurement widely acknowledged as an integrated measurement of the homeostatic stress of an exercise bout...
March 2017: Biology of Sport
https://www.readbyqxmd.com/read/28415931/comparison-of-dexmedetomidine-and-propofol-for-conscious-sedation-in-inguinal-hernia-repair-a-prospective-randomized-controlled-trial
#8
Hong-Mei Wang, Xiao-Yu Shi, Xia-Rong Qin, Jia-Li Zhou, Yan-Fei Xia
Objective The ideal agents for conscious sedation during ambulatory inguinal hernia repair are still unclear. We aimed to compare the analgesic, sedative, haemodynamic, and side effects of dexmedetomidine with those of propofol in combination with fentanyl for conscious sedation in patients undergoing inguinal hernia repair. Methods Eighty patients undergoing unilateral inguinal hernia repair were prospectively randomized to receive either dexmedetomidine (n = 40) or propofol (n = 40). Dexmedetomidine and propofol dosages were adjusted to maintain the targeted level of sedation...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28415064/physical-demands-of-multimodal-training-competitions-and-their-relationship-to-measures-of-performance
#9
Andrew R Jagim, Owen Rader, Margaret T Jones, Jonathan M Oliver
Jagim, AR, Rader, O, Jones, MT, and Oliver, JM. Physical demands of multimodal training competitions and their relationship to measures of performance. J Strength Cond Res 31(5): 1212-1220, 2017-The purpose of this study was to identify the physical demands of multimodal training (MMT) competitions and to determine the extent of their relationship to select measures of performance. Eighteen (>1.5 years of strength training experience) men (n = 10) and women (n = 8) (mean ± SD; age: 37.8 ± 10.6 years, height: 172...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28414662/weil-s-disease-from-a-local-new-orleans-bar
#10
H P Kahn, L Bateman
INTRODUCTION: Leptospirosis is a zoonotic infection that typically presents with fever, myalgias, nausea, and vomiting after contact with contaminated waters or infected animals (typically rodents); and their excrements. Conditions favorable to the transmission of leptospirosis are common in LA and, without treatment, leptospirosis can lead to both liver and renal failure, meningitis, pulmonary hemorrhage and ultimately death. CASE: A 56 year old woman with no past medical history presented to the Emergency Department with weakness, myalgias, jaundice and decreased urine output for one week...
March 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28414607/cardiac-arrest-in-an-american-cocker-spaniel-during-a-deep-ear-flush-procedure
#11
Alexandra Gould, Fernando L Garcia-Pereira, W Dunbar Gram
CASE DESCRIPTION A 14-year-old spayed female American Cocker Spaniel with bilateral otitis media and no evidence of cardiovascular instability was anesthetized to allow performance of a deep ear flush. CLINICAL FINDINGS Otoscopic examination of the left ear revealed evidence of chronic inflammation; the ear was flushed with sterile saline (0.9% NaCl) solution. Examination of the right ear revealed more severe chronic inflammation than in the left ear, including a ruptured tympanum (timing of rupture unknown)...
May 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28413579/metabolic-recovery-of-the-failing-heart-emerging-therapeutic-options
#12
Dale J Hamilton
Heart failure has mortality rates that parallel those of breast cancer. Current management strategies include neurohormonal blockade, rate control measures, natriuretic peptide preservation, implantation of mechanical assist devices, and heart transplantation. Despite these strategies, however, the failing myocardium remains energy depleted. New strategies to promote metabolic recovery are being developed to potentially augment current treatment guidelines. For example, an unexpected finding of our own studies showed that mechanical unloading with assist devices in advanced-stage heart failure restored metabolic flux...
January 2017: Methodist DeBakey Cardiovascular Journal
https://www.readbyqxmd.com/read/28408349/early-effects-of-prolonged-cardiac-arrest-and-ischemic-postconditioning-during-cardiopulmonary-resuscitation-on-cardiac-and-brain-mitochondrial-function-in-pigs
#13
Timothy R Matsuura, Jason A Bartos, Adamantios Tsangaris, Kadambari Chandra Shekar, Matthew D Olson, Matthias L Riess, Martin Bienengraeber, Tom P Aufderheide, Robert W Neumar, Jennifer N Rees, Scott H McKnite, Anna E Dikalova, Sergey I Dikalov, Hunter F Douglas, Demetris Yannopoulos
Background Out-of-hospital cardiac arrest (CA) is a prevalent medical crisis resulting in severe injury to the heart and brain and an overall survival of less than 10 percent. Mitochondrial dysfunction is predicted to be a key determinant of poor outcomes following prolonged CA. However, the onset and severity of mitochondrial dysfunction during CA and cardiopulmonary resuscitation (CPR) is not fully understood. Ischemic postconditioning (IPC), controlled pauses during the initiation of CPR, has been shown to improve cardiac function and neurologically favorable outcomes after fifteen minutes of CA...
April 10, 2017: Resuscitation
https://www.readbyqxmd.com/read/28407037/what-explains-socioeconomic-differences-in-the-speed-of-heart-rate-recovery-to-postural-challenge
#14
Cathal McCrory, Lisa F Berkman, Patrick V Moore, Rose Anne Kenny
Background: Much recent work has focused on the value of heart rate recovery (HRR) as a marker of cardiovascular health and a predictor of mortality. This article explores socioeconomic variation in HRR following exposure to a potent physiological stressor. Methods: The sample involved a nationally representative cohort of 4,475 community-dwelling older persons aged 50 years and older participating in the Irish Longitudinal Study on Ageing (TILDA). Participants completed an active stand (ie, vertical stand from a supine position) as part of a detailed clinic-based cardiovascular health assessment...
April 12, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28402023/heart-rate-recovery-improvement-in-patients-following-acute-myocardial-infarction-exercise-training-%C3%AE-blocker-therapy-or-both
#15
Wladimir M Medeiros, Fabio A de Luca, Alcides R de Figueredo Júnior, Felipe A R Mendes, Carlos Gun
Heart rate recovery (HRR) is a strong mortality predictor. Exercise training (ET) and β-blocker therapy have significant impact on the HRR of patients following myocardial infarction (MI). However, the combination of ET and β-blocker therapy, as well as its effectiveness in patients with a more compromised HRR (≤12 bpm), has been under-studied. Male patients (n = 64) post-MI were divided: Training + β-blocker (n = 19), Training (n = 15), β-blocker (n = 11) and Control (n = 19). Participants performed an ergometric test before and after 3 months of intervention...
April 12, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28400684/early-prediction-of-3-month-survival-of-patients-in-refractory-cardiogenic-shock-and-cardiac-arrest-on-extracorporeal-life-support
#16
Clément Delmas, Jean-Marie Conil, Simon Sztajnic, Bernard Georges, Caroline Biendel, Camille Dambrin, Michel Galinier, Vincent Minville, Olivier Fourcade, Stein Silva, Bertrand Marcheix
BACKGROUND: Extracorporeal life support (ECLS) holds the promise of significant improvement of the survival of patient in refractory cardiogenic shock (CS) or cardiac arrest (CA). Nevertheless, it remains to be shown to which extent these highly invasive supportive techniques could improve long-term patient's outcome. METHODS: The outcomes of 82 adult ECLS patients at our institution between January 2012 and December 2013 were retrospectively analyzed. RESULTS: Patients were essentially men (64...
March 2017: Indian Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/28400498/effect-of-thoracic-epidural-anesthesia-on-heart-rate-variability-in-a-porcine-model
#17
Arjun Mahajan, Tatsuo Takamiya, Peyman Benharash, Wei Zhou
Heart rate variability (HRV) is increasingly recognized as a means of evaluating autonomic tone. Thoracic epidural anesthesia (TEA) has been previously demonstrated to suppress the electrical storms in patients. However, the effect of TEA on HRV during sympathoexcitation remains unknown. In this study, we aimed to determine the effects of TEA on HRV response to left stellate ganglion stimulation (LSS) in a porcine model. In 12 anesthetized pigs after insertion of an epidural catheter to T1 level, a median sternotomy was performed to expose the heart and the left stellate ganglion...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28398944/alpine-skiing-as-winter-time-high-intensity-training
#18
Thomas Stöggl, Christoph Schwarzl, Edith E Müller, Masaru Nagasaki, Julia Stöggl, Martin Schönfelder, Josef Niebauer
INTRODUCTION: To counteract the winter activity deficit, we set out to analyze cardiorespiratory and metabolic responses of two high intensity training (HIT) protocols during alpine skiing (AS), cross-country skiing (XCS) and indoor cycling (IC) and the effects of sex, age and fitness level in this comparison. METHODS: Nineteen healthy subjects (two age and fitness groups, both sexes) performed AS, XCS, and IC with measurements of oxygen uptake (VO2), energy expenditure (EE), heart rate (HR), lactate, blood glucose and rate of perceived exertion, determined during 4-min of continuous high intensity (HITc: 90% HRmax for XCS and IC or short turn skiing during AS) or 10-min intermittent HIT [HITint: 5x1' high intensity (>90% HRmax or short turn skiing), 1' active recovery]...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28398556/prognosis-associated-with-redo-cardiac-resynchronization-therapy-following-complete-device-and-lead-extraction-due-to-device-related-infection
#19
Martin Seifert, Viviane Moeller, Anita Arya, Thomas Schau, Frank Hoelschermann, Christian Butter
Aims: An increase in the number of cardiac resynchronization therapy (CRT) device implantations worldwide has led to a consequent increase in the number of infections associated with the device, making extraction of the CRT device inevitable. Redo CRT implantation after treatment and recovery following device extraction is challenging. This study aimed to evaluate the success rate, complications, and long-term prognosis of redo CRT implantation, including the rates of subclavian, cava, and coronary sinus (CS) vein thrombosis as well as re-infection...
April 6, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28397006/acute-effect-of-stretching-one-leg-on-regional-arterial-stiffness-in-young-men
#20
Yosuke Yamato, Natsuki Hasegawa, Shumpei Fujie, Shigehiko Ogoh, Motoyuki Iemitsu
PURPOSE: Our previous study demonstrated that a single bout of stretching exercises acutely reduced arterial stiffness. We hypothesized that this acute vascular response is due to regional mechanical stimulation of the peripheral arteries. To test this hypothesis, we examined the effect of a single bout of passive one leg stretching on arterial stiffness, comparing the stretched and the non-stretched leg in the same subject. METHODS: Twenty-five healthy young men (20...
April 10, 2017: European Journal of Applied Physiology
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