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"Anaerobic threshold"

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https://www.readbyqxmd.com/read/29332919/high-intensity-interval-training-for-severe-left-ventricular-dysfunction-treated-with-left-ventricular-assist-device
#1
Yusuke Ugata, Hiroshi Wada, Kenichi Sakakura, Tatsuro Ibe, Miyuki Ito, Nahoko Ikeda, Hideo Fujita, Shin-Ichi Momomura
Aerobic training based on anaerobic threshold (AT) is well-known to improve cardiac function, exercise capacity, and long-term outcomes of patients with heart failure. Recent reports suggested that high-intensity interval training (HIIT) for patients with cardiovascular disease may improve cardiopulmonary exercise capacity. We present a 61-year-old male patient of severe left ventricular dysfunction with left ventricular assisted device (LVAD). Following HIIT for 8 weeks, exercise capacity and muscle strength have improved without worsening left ventricular function...
January 15, 2018: International Heart Journal
https://www.readbyqxmd.com/read/29325367/-effects-of-aerobic-exercise-combined-with-resistance-training-on-the-cardiorespiratory-fitness-and-exercise-capacity-of-patients-with-stable-coronary-artery-disease
#2
S X Liu, Y Y Chen, K L Xie, W L Zhang
Objective: To observe the effects of aerobic exercise combined with resistance training on the cardiorespiratory fitness and exercise capacity of patients with stable coronary artery disease (CAD) . Methods: From June 2014 to December 2015, 73 patients with stable CAD in our department were recruited and randomly assigned to two groups: the control group (n=38) and the exercise group (n=35) . Patients in both groups received conventional medical treatment for CAD and related cardiac health education. While for patients in exercise group, a twelve-week aerobic exercise combined with resistance training program were applied on top of conventional treatment and health education...
December 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29324512/exercise-capacity-in-patients-with-the-total-artificial-heart
#3
Justin M Canada, Ronald K Evans, Antonio Abbate, Ross Arena, Daniel G Tang, Vigneshwar Kasirajan, Keyur B Shah
There is a dearth of information regarding the functional abilities of patients with the total artificial heart (TAH). Increased utilization of the TAH and patient discharge to home with the portable unit necessitates a shift in focus to quality of life, which includes quantifying and ultimately optimizing functional capacity. To date, only single-patient case studies have described the exercise response of the TAH patient. Fourteen patients with the TAH underwent cardiopulmonary exercise testing with concurrent analysis of TAH device function...
January 10, 2018: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/29280079/photobiomodulation-increases-mitochondrial-citrate-synthase-activity-in-rats-submitted-to-aerobic-training
#4
Wouber Hérickson de Brito Vieira, Cleber Ferraresi, Maria Luiza Barcellos Schwantes, Sérgio Eduardo de Andrade Perez, Vilmar Baldissera, Mikhail Santos Cerqueira, Nivaldo Antonio Parizotto
This study investigated the effects of photobiomodulation by low-laser laser therapy (LLLT) on the activities of citrate synthase (CS) and lactate dehydrogenase (LDH) and the anaerobic threshold (AT) in rats submitted to treadmill exercise. Fifty-four rats were allocated into four groups: rest control (RCG), rest laser (RLG), exercise control (ECG), and exercise laser (ELG). The infrared LLLT was applied daily on the quadriceps, gluteus maximum, soleus, and tibialis anterior muscles. Muscle samples (soleus, tibialis anterior, and cardiac muscles) were removed 48 h after the last exercise session for spectrophotometric analysis of the CS and LDH...
December 26, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29262409/early-markers-of-cardiovascular-risk-in-autosomal-dominant-polycystic-kidney-disease
#5
Silvia Lai, Daniela Mastroluca, Silvia Matino, Valeria Panebianco, Antonio Vitarelli, Lidia Capotosto, Irene Turinese, Paolo Marinelli, Marco Rossetti, Alessandro Galani, Pia Baiocchi, Anna R D'Angelo, Paolo Palange
BACKGROUND/AIMS: Cardiovascular disease is the most frequent cause of morbidity and mortality in autosomal dominant polycystic kidney disease (ADPKD) patients, often before the onset of renal failure, and the pathogenetic mechanism is not yet well elucidated. The aim of the study was to identify early and noninvasive markers of cardiovascular risk in young ADPKD patients, in the early stages of disease. METHODS: A total of 26 patients with ADPKD and 24 control group, matched for age and sex, were enrolled, and we have assessed inflammatory indexes, mineral metabolism, metabolic state and markers of atherosclerosis and endothelial dysfunction (carotid intima media thickness (IMT), ankle brachial index (ABI), flow mediated dilation (FMD), renal resistive index (RRI), left ventricular mass index (LVMI)) and cardiopulmonary exercise testing (CPET), maximal O2 uptake (V'O2max), and O2 uptake at lactic acid threshold (V'O2@LT)...
December 15, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29248631/an-integrative-perspective-of-the-anaerobic-threshold
#6
Marcelo Magalhães Sales, Caio Victor de Sousa, Samuel da Silva Aguiar, Beat Knechtle, Pantelis Theodoros Nikolaidis, Polissandro Mortoza Alves, Herbert Gustavo Simões
The concept of anaerobic threshold (AT) was introduced during the nineteen sixties. Since then, several methods to identify the anaerobic threshold (AT) have been studied and suggested as novel 'thresholds' based upon the variable used to detect it (i.e. lactate threshold, ventilatory threshold). These different techniques have brought some confusion about how we should name this parameter, for instance, anaerobic threshold or the physiological measure used (i.e. lactate, ventilation). On the other hand, the modernization of scientific apparatus and methods, as well as the body of literature formed in the past decades, could provide a more cohesive understanding over the AT and the multiple physiological systems involved...
December 14, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29248153/impact-of-pectus-excavatum-on-cardiopulmonary-function
#7
Tariq Abu-Tair, Salmai Turial, Marike Hess, Christiane M Wiethoff, Gundula Staatz, André Lollert, Christoph Kampmann
BACKGROUND: Pectus excavatum is classified using the Haller Index (HI) or the Correction Index. However, no correlation between the HI and CI and cardiopulmonary impairment has been described in detail. METHODS: This prospective cohort study included 99 otherwise healthy patients with pectus excavatum who underwent cardiopulmonary exercise testing and magnetic resonance imaging at inspiration and expiration to correlate cardiopulmonary function with the grade of thoracic dysmorphia...
December 13, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29242309/physiological-differences-between-a-noncontinuous-and-a-continuous-endurance-training-protocol-in-recreational-runners-and-metabolic-demand-prediction
#8
Muhammad J Ali, Balasekaran Govindasamay, Hoon Kay Hiang, Gerald Seet Gim Lee
This study investigated the physiological difference in recreational runners between a noncontinuous and a continuous endurance training protocol. It also aimed to determine physiological surrogate that could monitor metabolic demand of prolonged running in real-time. For data collection, a total of 18 active male recreational runners were recruited. Physiological (HR, RR, RER, ṼO2, BLa), and overall perceptual (RPEO) responses were recorded against three designed test sessions. Session 1 included ṼO2submax test to determine critical speed (CS) at anaerobic threshold (AT)...
December 2017: Physiological Reports
https://www.readbyqxmd.com/read/29239986/practical-model-of-low-volume-paddling-based-sprint-interval-training-improves-aerobic-and-anaerobic-performances-in-professional-female-canoe-polo-athletes
#9
Mohsen Sheykhlouvand, Erfan Khalili, Mohammadali Gharaat, Hamid Arazi, Mousa Khalafi, Bahman Tarverdizadeh
Brief, intense exercise training employing running and cycling as exercise interventions may induce aerobic and anaerobic adaptations in athletes from wide range of sports. However, this has not been studied extensively for those sports in which the upper-body is predominantly involved. Our purpose was to examine the effects of kayak paddling-based sprint interval training (SIT) on cardiorespiratory fitness and anaerobic performance. 16 professional female canoe polo athletes (age = 27.6 ± 1.9 years; height = 165...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29238257/validation-of-an-arm-crank-ergometer-test-for-use-in-sedentary-adults
#10
Alexandros Mitropoulos, Anil Gumber, Helen Crank, Markos Klonizakis
The maximal oxygen uptake (V̇O2peak) test is an approved pre-operative examination tool, in a clinical setting: Both V̇O2peak and anaerobic threshold indicate a patient's physiological tolerance for major surgery and post-operative mortality, with cycle ergometry being routinely used for V̇O2peak tests in clinical settings, in many European countries. Nevertheless, the opportunities to assess populations with restricted mobility of the lower limbs are limited, as alternative methods (such as an arm-crank test protocol) to assess V̇O2peak are yet to be established...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29236871/evaluation-of-anaerobic-threshold-in-non-pregnant-and-pregnant-rats
#11
Aline Oliveira Netto, Nathália C D Macedo, Franciane Q Gallego, Yuri K Sinzato, Gustavo T Volpato, Débora C Damasceno
Several studies present different methodologies and results about intensity exercise, and many of them are performed in male rats. However, the impact of different type, intensity, frequency and duration of exercise on female rats needs more investigation. From the analysis of blood lactate concentration during lactate minimum test (LacMin) in the swimming exercise, the anaerobic threshold (AT) was identified, which parameter is defined as the transition point between aerobic and anaerobic metabolism. LacMin test is considered a good indicator of aerobic conditioning and has been used in prescription of training in different exercise modalities...
October 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/29230797/the-association-of-pre-operative-home-accelerometry-with-cardiopulmonary-exercise-variables
#12
H W Cui, G S Kirby, K Surmacz, C Hargrove, J Griffiths, B W Turney
We investigated the association of pre-operative activity, reported by the Duke Activity Score Index, Short Form-12 and measured by an accelerometer worn at home, with five cardiopulmonary exercise variables: peak power; peak oxygen consumption; anaerobic threshold; and ventilatory equivalents for oxygen and carbon dioxide. Fifty patients scheduled for major surgery underwent a standard pre-operative cardiopulmonary exercise test and wore a chest-mounted triaxial accelerometer for a mean (SD) duration of 3...
December 12, 2017: Anaesthesia
https://www.readbyqxmd.com/read/29223851/additional-value-of-anaerobic-threshold-in-a-general-mortality-prediction-model-in-a-urban-patient-cohort-with-chagas-cardiomyopathy
#13
Roberto Ribeiro da Silva, Michel Silva Reis, Basílio de Bragança Pereira, Emilia Matos do Nascimento, Roberto Coury Pedrosa
BACKGROUND: Anaerobic threshold (AT) is recognized as objective and direct measurement that reflects variations in metabolism of skeletal muscles during exercise. Its prognostic value in heart diseases of non-chagasic etiology is well established. However, the assessment of risk of death in Chagas heart disease is relatively well established by Rassi score. But, the added value that AT can bring to Rassi score has not been studied yet. OBJECTIVES: To assess whether AT presents additional effect to Rassi score in patients with chronic Chagas' heart disease...
December 6, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/29208757/critical-velocity-determined-by-a-non-exhaustive-method-in-subjects-with-copd
#14
Marceli Rocha Leite, Juliana Souza Uzeloto, Bruna Spolador de Alencar Silva, Ana Paula Coelho Figueira Freire, Fabiano Francisco de Lima, Eduardo Zapaterra Campos, Diego Giulliano Destro Christofaro, Carlos Augusto Kalva-Filho, Dionei Ramos, Ercy Mara Cipulo Ramos
BACKGROUND: Exercise training is an effective and low-cost tool for COPD rehabilitation. Thus, validating a non-exhaustive method to determine a patient's anaerobic threshold would be a very interesting tool in practical settings. We aimed to test the reproducibility of critical velocity values determined in a non-exhaustive manner (CVNE) and tolerance for exercise performed at this physiological marker in subjects with COPD. METHODS: Twelve subjects with COPD were evaluated in this cross-sectional study...
December 5, 2017: Respiratory Care
https://www.readbyqxmd.com/read/29199900/a-prescribed-walking-regimen-plus-arginine-supplementation-improves-function-and-quality-of-life-for-patients-with-pulmonary-arterial-hypertension-a-pilot-study
#15
Mary Beth Brown, Attie Kempf, Catherine M Collins, Gary M Long, Matthew Owens, Shikha Gupta, Yaron Hellman, Vincent Wong, Mark Farber, Tim Lahm
Current evidence suggests that exercise training is beneficial in pulmonary arterial hypertension (PAH). Unfortunately, the standard supervised, hospital-based programs limit patient accessibility to this important intervention. Our proof-of-concept study aimed to provide insight into the usefulness of a prescribed walking regimen along with arginine supplementation to improve outcomes for patients with PAH. Twelve PAH patients (all women) in New York Heart Association (NYHA) functional class (FC) II (n = 7) or III (n = 5) and in stable condition for ≥ 3 months were enrolled...
January 2018: Pulmonary Circulation
https://www.readbyqxmd.com/read/29190852/exercise-prescription-using-the-borg-rating-of-perceived-exertion-to-improve-fitness
#16
Manuel Vicente Garnacho-Castaño, Raúl Domínguez, Arturo Muñoz González, Raquel Feliu-Ruano, Noemí Serra-Payá, José Luis Maté-Muñoz
The present study aimed to compare two fitness-training methodologies, instability circuit resistance training (ICRT) versus traditional circuit resistance training (TCRT), applying an experimental model of exercise prescription controlling and modulating exercise load using the Borg rating of perceived exertion. Forty-four healthy young adults age (21.6±2.3 years) were randomly assigned to three groups: TCRT (n=14), ICRT (n=14) and a control group (n=16). Strength and cardiorespiratory tests were chosen to evaluate cardiorespiratory and muscular fitness before and after the training program...
November 30, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29189582/aerobic-fitness-in-top-class-soccer-referees
#17
Carlo Castagna, Mario Bizzini, Susana C Araújo Póvoas, Kai Schenk, Gery Büsser, Stefano DʼOttavio
Castagna, C, Bizzini, M, Araújo Póvoas, SC, Schenk, K, Büsser, G, and D'Ottavio, S. Aerobic fitness in top-class soccer referees. J Strength Cond Res XX(X): 000-000, 2017-The aim of this study was to examine the aerobic fitness status of top-class male soccer officials using a cross-sectional design and known population group constructs. Fifty-two field referees (FRs, age 38.4 ± 3.3 years; height 181 ± 5.6 cm; body mass 76.8 ± 6.8 kg; body mass index [BMI] 23.4 ± 1.7 kg·m; body fat 20.4 ± 3.6%; and international refereeing experience 5 ± 3...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29184292/cardiopulmonary-rehabilitation-program-impact-on-prognostic-markers-in-selected-patients-with-resting-and-exercise-induced-ventilatory-inefficiency-a-clinical-trial
#18
Sherin Hassan M Mehani, Heba Ahmed A Abdeen
[Purpose] Ventilatory limitation is a common problem in patients with chronic heart failure and pulmonary hypertension. Excess ventilation may arise from augmented ventilatory drive, over activity of chemoreceptors and muscle ergoreceptors, or premature onset of lactic acidosis. Exertional dyspnea can cause limitations in the activities of daily living and as a result, reduced quality of life for these patients. The aim of the present study was to evaluate the effect of cardiopulmonary rehabilitation program on ventilatory efficiency for these patients...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29184275/effects-of-lower-extremity-injuries-on-aerobic-exercise-capacity-anaerobic-power-and-knee-isokinetic-muscular-function-in-high-school-soccer-players
#19
Kwang-Jun Ko, Gi-Chul Ha, Dong-Woo Kim, Seol-Jung Kang
[Purpose] The study investigated the effects of lower extremity injuries on aerobic exercise capacity, anaerobic power, and knee isokinetic muscular function in high school soccer players. [Subjects and Methods] The study assessed U High School soccer players (n=40) in S area, South Korea, divided into 2 groups: a lower extremity injury group (n=16) comprising those with knee and ankle injuries and a control group (n=24) without injury. Aerobic exercise capacity, anaerobic power, and knee isokinetic muscular function were compared and analyzed...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29171164/exercise-performance-haemodynamics-and-respiratory-pattern-do-not-identify-heart-failure-patients-who-end-exercise-with-dyspnoea-from-those-with-fatigue
#20
Marco Morosin, Stefania Farina, Carlo Vignati, Emanuele Spadafora, Susanna Sciomer, Elisabetta Salvioni, Gianfranco Sinagra, Piergiuseppe Agostoni
AIMS: The two main symptoms referred by chronic heart failure (HF) patients as the causes of exercise termination during maximal cardiopulmonary exercise testing (CPET) are muscular fatigue and dyspnoea. So far, a physiological explanation why some HF patients end exercise because of dyspnoea and others because of fatigue is not available. We assessed whether patients referring dyspnoea or muscular fatigue may be distinguished by different ventilator or haemodynamic behaviours during exercise...
November 24, 2017: ESC Heart Failure
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