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"Anaerobic threshold"

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https://www.readbyqxmd.com/read/29776810/congenital-heart-disease-in-adults-assessmentof-functional-capacity-using-cardiopulmonary-exercise-testing
#1
Sílvia Aguiar Rosa, Ana Agapito, Rui M Soares, Lídia Sousa, José Alberto Oliveira, Ana Abreu, Ana Sofia Silva, Sandra Alves, Helena Aidos, Fátima F Pinto, Rui Cruz Ferreira
AIM: The aim of the study was to compare functional capacity in different types of congenital heart disease (CHD), as assessed by cardiopulmonary exercise testing (CPET). METHODS: A retrospective analysis was performed of adult patients with CHD who had undergone CPET in a single tertiary center. Diagnoses were divided into repaired tetralogy of Fallot, transposition of the great arteries (TGA) after Senning or Mustard procedures or congenitally corrected TGA, complex defects, shunts, left heart valve disease and right ventricular outflow tract obstruction...
May 15, 2018: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29757824/improvements-in-key-cardiopulmonary-exercise-testing-variables-following-cardiac-rehabilitation-in-patients-with-coronary-artery-disease
#2
Dejana Popovic, Nikhil Kumar, Sundeep Chaudhry, Akshay Bagai, Ross Arena, Naresh Kumar
PURPOSE: Improvements in cardiorespiratory fitness (VO2peak) post-cardiac rehabilitation (post-CR) are used to gauge therapeutic efficacy. The aim of the present study was to assess the effect of supervised CR on other cardiopulmonary exercise testing (CPX) variables, specifically those that reflect ventilatory efficiency and VO2 changes in relation to changes in work rate (WR). METHODS: Patients (n = 142; mean age 63 ± 9 y; 23% female) with coronary artery disease (CAD) participated in supervised CR for 3 to 6 mo completing 60 ± 17 sessions (range: 32-96 sessions), with intensity derived from the baseline CPX...
May 11, 2018: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29727012/reliability-of-repeated-arm-crank-cardiopulmonary-exercise-tests-in-patients-with-small-abdominal-aortic-aneurysm
#3
J W Durrand, K Wagstaff, A Kasim, L Cawthorn, G R Danjoux, E Kothmann
Arm-crank ergometry may be useful in patients unable to pedal, for instance due to peripheral arterial disease. Twenty participants with small abdominal aortic aneurysm undertook two serial arm-crank tests and then a pedal test, four of whom had indeterminate anaerobic thresholds, precluding analysis. The mean (SD) peak arm and leg oxygen consumptions in 16 participants were 13.71 (2.62) ml.kg-1 .min-1 and 16.82 (4.44) ml.kg-1 .min-1 , with mean (SD) individual differences of 3.11 (2.48) ml.kg-1 .min-1 , p = 0...
May 4, 2018: Anaesthesia
https://www.readbyqxmd.com/read/29719514/longer-work-rest-intervals-during-high-intensity-interval-training-hiit-lead-to-elevated-levels-of-mir-222-and-mir-29c
#4
Boris Schmitz, Florian Rolfes, Katrin Schelleckes, Mirja Mewes, Lothar Thorwesten, Michael Krüger, Andreas Klose, Stefan-Martin Brand
Aim: MicroRNA-222 (miR-222) and miR-29c have been identified as important modulators of cardiac growth and may protect against pathological cardiac remodeling. miR-222 and -29c may thus serve as functional biomarkers for exercise-induced cardiac adaptations. This investigation compared the effect of two workload-matched high-intensity interval training (HIIT) protocols with different recovery periods on miR-222 and -29c levels. Methods: Sixty-three moderately trained females and males (22.0 ± 1.7 years) fulfilled the eligibility criteria and were randomized into two HIIT groups using sex and exercise capacity...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29719466/effect-of-high-dose-ginsenoside-complex-ug0712-supplementation-on-physical-performance-of-healthy-adults-during-a-12-week-supervised-exercise-program-a-randomized-placebo-controlled-clinical-trial
#5
Eon Sook Lee, Yun Jun Yang, Jun Hyung Lee, Yeong Sook Yoon
Background: Ginseng has been used as an ergogenic agent, although evidence for its effectiveness is weak. A randomized, double-blind, placebo-controlled clinical trial was conducted to evaluate the effect of a ginsenoside complex (UG0712) on changes in exercise performance. Methods: Sedentary individuals ( n   =  117) were randomly assigned into one of three groups: low-dose ginsenoside supplementation (100 mg/d, n   =  39), high-dose ginsenoside supplementation (500 mg/d, n   =  39), or a placebo group (500 mg/d, n   =  39)...
April 2018: Journal of Ginseng Research
https://www.readbyqxmd.com/read/29692190/routine-pre-and-post-neoadjuvant-chemotherapy-fitness-testing-is-not-indicated-for-oesophagogastric-cancer-surgery
#6
R J Drummond, D Vass, H Wadhawan, C F Craig, C K MacKay, G M Fullarton, M J Forshaw
Introduction There is a known correlation between anaerobic threshold (AT) during cardiopulmonary exercise testing and development of cardiopulmonary complications in high-risk patients undergoing oesophagogastric cancer surgery. This study aimed to assess the value of routine retesting following neoadjuvant chemotherapy. Methods Patients undergoing neoadjuvant chemotherapy with subsequent oesophagogastric cancer surgery with pre- and post-neoadjuvant chemotherapy cardiopulmonary exercise data were identified from a prospectively maintained database...
April 25, 2018: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/29683925/short-term-8-weeks-high-intensity-interval-training-in-diseased-cohorts
#7
James E M Blackwell, Brett Doleman, Philip J J Herrod, Samuel Ricketts, Bethan E Phillips, Jonathan N Lund, John P Williams
BACKGROUND & AIM: Exercise training regimes can lead to improvements in measures of cardiorespiratory fitness (CRF), improved general health, and reduced morbidity and overall mortality risk. High intensity interval training (HIIT) offers a time-efficient approach to improve CRF in healthy individuals, but the relative benefits of HIIT compared to traditional training methods are unknown in across different disease cohorts. METHODS: This systematic review and meta-analysis compares CRF gains in randomised controlled trials of short-term (<8 weeks) HIIT vs...
April 21, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29666705/the-role-of-moderate-aerobic-exercise-as-determined-by-cardiopulmonary-exercise-testing-in-als
#8
Anna Caroline Marques Braga, Anabela Pinto, Susana Pinto, Mamede de Carvalho
Introduction: The efficacy of cardiopulmonary exercise testing (CPET) to determining exercise intensity has not been established in Amyotrophic Lateral Sclerosis (ALS). We studied this intervention. Methods: We included 48 ALS patients randomized in 2 groups: G1 ( n = 24), exercise intensity leveled by CPET; G2 ( n = 24), standard care limited by fatigue, during 6 months. ALS functional scale (ALSFRS-R) and forced vital capacity (FVC) were performed every 3 months; CPET was done at admission ( T 1) and 6 months later ( T 2)...
2018: Neurology Research International
https://www.readbyqxmd.com/read/29623546/exercise-rehabilitation-in-ventricular-assist-device-recipients-a-meta-analysis-of-effects-on-physiological-and-clinical-outcomes
#9
REVIEW
Liza Grosman-Rimon, Spencer D Lalonde, Nina Sieh, Maureen Pakosh, Vivek Rao, Paul Oh, Sherry L Grace
Exercise rehabilitation in heart failure patients has been shown to improve quality of life (QoL) and survival. It is also recommended in clinical practice guidelines for ventricular assist device (VAD) recipients. However, there have only been two meta-analyses on the effects of exercise rehabilitation in VAD patients, on only two outcomes. The objective of the review was to quantitatively evaluate the effect of exercise rehabilitation in VAD recipients on functional capacity, exercise physiology parameters, chronotropic responses, inflammatory biomarkers and neurohormones, heart structure and function, and clinical outcomes...
April 6, 2018: Heart Failure Reviews
https://www.readbyqxmd.com/read/29621885/improvement-in-exercise-capacity-and-delayed-anaerobic-metabolism-induced-by-far-infrared-emitting-garments-in-active-healthy-subjects-a-pilot-study
#10
Valentina Mantegazza, Mauro Contini, Maurizia Botti, Ada Ferri, Francesca Dotti, Pierluigi Berardi, Piergiuseppe Agostoni
Background Far-infrared-emitting garments have several biological properties including the capability to increase blood perfusion in irradiated tissues. Design The aim of the study was to evaluate whether far-infrared radiation increases exercise capacity and delays anaerobic metabolism in healthy subjects. Methods With a double-blind, crossover protocol, a maximal cardiopulmonary exercise test was performed in 20 volunteers, wearing far-infrared or common sport clothes, identical in texture and colour. Results Comparing far-infrared with placebo garments, higher oxygen uptake at peak of exercise and longer endurance time were observed (peak oxygen uptake 38...
January 1, 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29602291/surface-electromyographic-evaluation-of-the-neuromuscular-activation-of-the-inspiratory-muscles-during-progressively-increased-inspiratory-flow-under-inspiratory-resistive-loading
#11
H Sekiguchi, Y Tamaki, Y Kondo, H Nakamura, K Hanashiro, K Yonemoto, T Moritani, I Kukita
This study aimed to evaluate neuromuscular activation in the scalene and sternocleidomastoid muscles using surface electromyography (EMG) during progressively increased inspiratory flow, produced by increasing the respiratory rate under inspiratory-resistive loading using a mask ventilator. Moreover, we attempted to identify the EMG inflection point (EMGIP ) on the graph, at which the root mean square (RMS) of the EMG signal values of the inspiratory muscles against the inspiratory flow velocity acceleration abruptly increases, similarly to the EMG anaerobic threshold (EMGAT ) reported during incremental-resistive loading in other skeletal muscles...
March 1, 2018: Physiology International
https://www.readbyqxmd.com/read/29601082/cardiopulmonary-fitness-before-and-after-neoadjuvant-chemotherapy-in-patients-with-oesophagogastric-cancer
#12
M Navidi, A W Phillips, S M Griffin, K E Duffield, A Greystoke, K Sumpter, R C F Sinclair
BACKGROUND: Neoadjuvant chemotherapy may have a detrimental impact on cardiorespiratory reserve. Determination of oxygen uptake at the anaerobic threshold by cardiopulmonary exercise testing (CPET) provides an objective measure of cardiorespiratory reserve. Anaerobic threshold can be used to predict perioperative risk. A low anaerobic threshold is associated with increased morbidity after oesophagogastrectomy. The aim of this study was to establish whether neoadjuvant chemotherapy has an adverse effect on fitness, and whether there is recovery of fitness before surgery for oesophageal and gastric adenocarcinoma...
March 30, 2018: British Journal of Surgery
https://www.readbyqxmd.com/read/29566672/characteristics-of-exercise-capacity-in-female-systemic-lupus-erythematosus-associated-pulmonary-arterial-hypertension-patients
#13
Bigyan Pudasaini, Guo-Ling Yang, Chen Yang, Jian Guo, Ping Yuan, Yang Wen-Lan, Rui Zhang, Lan Wang, Qin-Hua Zhao, Su-Gang Gong, Rong Jiang, Tian-Xiang Chen, Xiong Wei, Jin-Ming Liu
BACKGROUND: To study the oxygen uptake efficiency and determine usefulness of submaximal parameters of oxygen uptake in systemic lupus erythematosus associated pulmonary arterial hypertension (SLE PAH) on performing a cardiopulmonary exercise test (CPET). METHODS: CPET was performed in 21 SLE PAH patients, equal number of idiopathic pulmonary arterial hypertension (IPAH) patients and controls. Peak VO2 , anaerobic threshold (AT), oxygen uptake efficiency slope (OUES) and oxygen uptake efficiency plateau (OUEP) and other CPET parameters were examined...
March 23, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29556773/differences-in-kinematics-and-energy-cost-between-front-crawl-and-backstroke-below-the-anaerobic-threshold
#14
Tomohiro Gonjo, Carla McCabe, Ana Sousa, João Ribeiro, Ricardo J Fernandes, João Paulo Vilas-Boas, Ross Sanders
PURPOSE: The purpose of this study was to determine kinematic and energetic differences between front crawl and backstroke performed at the same aerobic speeds. METHODS: Ten male competitive swimmers performed front crawl and backstroke at a pre-determined sub-anaerobic threshold speed to assess energy cost (through oxygen uptake measurement) and kinematics (using three-dimensional videography to determine stroke frequency and length, intra-cycle velocity fluctuation, three-dimensional wrist and ankle speeds, and vertical and lateral ankle range of motion)...
March 19, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29555526/neoadjuvant-therapy-reduces-cardiopulmunary-function-in-patients-undegoing-oesophagectomy
#15
Iain G Thomson, Matthew P Wallen, Adrian Hall, Rebekah Ferris, David C Gotley, Andrew P Barbour, Andrew Lee, Janine Thomas, Bernard M Smithers
Neoadjuvant therapy (NAT) for oesophageal cancer may reduce cardiopulmonary function, assessed by cardiopulmonary exercise testing (CPEX). Impaired cardiopulmonary function is associated with mortality following esophagectomy. We sought to assess the impact of NAT on cardiopulmonary function using CPEX and assessing the clinical relevance of any change in particular if changes were associated with post-operative morbidity. This was a prospective, cohort study of 40 patients in whom CPEX was performed before and after NAT...
March 16, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29553289/long-term-effect-of-exercise-training-in-patients-after-transcatheter-aortic-valve-implantation-follow-up-of-the-sport-tavi-randomised-pilot-study
#16
Axel Pressler, Leonie Förschner, Jana Hummel, Bernhard Haller, Jeffrey W Christle, Martin Halle
Background Increased exercise capacity favourably influences clinical outcomes after transcatheter aortic valve implantation. In our SPORT:TAVI randomised pilot trial, eight weeks of endurance and resistance training (training group, TG) shortly after transcatheter aortic valve implantation resulted in significantly improved exercise capacity, muscular strength and quality of life compared to usual care (UC). However, the long-term clinical benefits of such an intervention are unknown. Design A randomised controlled trial...
May 2018: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/29547235/does-level-d-personal-protective-equipment-guard-against-hazardous-biologic-agents-during-cardiopulmonary-resuscitation
#17
Francisco Martín Rodríguez, Cristina Fernández Pérez, Miguel Castro Villamor, José Luis Martín Conty, Pedro Arnillas Gómez, Verónica Casado Vicente
OBJECTIVES: Our aim was to determine the usefulness of level D personal protective equipment (PPE) in safeguarding health care staff who perform cardiopulmonary resuscitation (CPR). MATERIAL AND METHODS: Quasi-experimental, uncontrolled trial in 96 volunteers chosen randomly and stratified by sex, level of training, and professional category. The subjects were selected from a convenience sample of 164 nurses, physicians, and students of nursing and medicine (40 men [41...
2018: Emergencias: Revista de la Sociedad Española de Medicina de Emergencias
https://www.readbyqxmd.com/read/29535585/effect-of-endurance-training-on-the-lactate-and-glucose-minimum-intensities
#18
Pedro B Junior, Vitor L de Andrade, Eduardo Z Campos, Carlos A Kalva-Filho, Alessandro M Zagatto, Gustavo G de Araújo, Marcelo Papoti
Due to the controversy about the sensitive of lactate minimum intensity (LMI) to training and the need to develop other tool for aerobic fitness evaluation, the purpose of this study was to analyze the sensitivity of glucose minimum intensity (GMI) and LMI to endurance training. Eight trained male cyclists (21.4 ± 1.9 years, 67.6 ± 7.5 kg and 1.72 ± 0.10 m) were evaluated twice, before and after 12 weeks of training. GMI and LMI were calculated, respectively, by the lowest blood glucose and lactate values attained during an incremental test performed after a hyperlactemia induction, and VO2 max was determined during standard incremental effort...
March 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29534920/cardiorespiratory-responses-nitric-oxide-production-and-inflammatory-factors-in-patients-with-myocardial-infarction-after-rehabilitation
#19
José V Subiela, Sonia H Torres, Juan B De Sanctis, Noelina Hernández
There is evidence that myocardial infarction (MI) patients have an inflammatory process that includes skeletal muscles, and exercise has been reported to reduce some inflammatory markers. The aim of this work was to study NO and some inflammatory markers in quadriceps muscle of MI patients before and after cardiac rehabilitation. Muscle biopsy was obtained in 17 MI patients before and after CR and only once in 11 healthy subjects. Several cardiorespiratory and metabolic parameters were evaluated and skeletal muscle levels of nitric oxide synthases, nitrate, nitrite, nitrotyrosine, tumor necrosis factor alpha (TNF-α), transforming growth factor beta (TGF-β), interleukin- 6 (IL-6) and CD154...
June 1, 2018: Nitric Oxide: Biology and Chemistry
https://www.readbyqxmd.com/read/29534108/advances-of-the-reverse-lactate-threshold-test-non-invasive-proposal-based-on-heart-rate-and-effect-of-previous-cycling-experience
#20
Leonardo Henrique Dalcheco Messias, Emanuel Elias Camolese Polisel, Fúlvia Barros Manchado-Gobatto
Our first aim was to compare the anaerobic threshold (AnT) determined by the incremental protocol with the reverse lactate threshold test (RLT), investigating the previous cycling experience effect. Secondarily, an alternative RLT application based on heart rate was proposed. Two groups (12 per group-according to cycling experience) were evaluated on cycle ergometer. The incremental protocol started at 25 W with increments of 25 W at each 3 minutes, and the AnT was calculated by bissegmentation, onset of blood lactate concentration and maximal deviation methods...
2018: PloS One
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