Relevant bibliographies by topics / Exercise tolerance

Academic literature on the topic 'Exercise tolerance'

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Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Exercise tolerance"

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AHMAD, AYAZ, and KHALID AMJAD KAYANI. "EXERCISE TOLERANCE TEST." Professional Medical Journal 13, no. 04 (December 16, 2006): 550–54. http://dx.doi.org/10.29309/tpmj/2006.13.04.4922.

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Objective: To ascertain the role of Exercise Tolerance Test as ascreening tool for coronary artery disease, in asymptomatic men who had one or more risk factors for developingischemic heart disease. Design: A descriptive study. Place and Time Period: Department of Medicine PAF HospitalMushaf Sarghoda from March 2004 to March 2005. Patients and Methods: A total no of 100 asymptomatic men age25-50 years with mean age of 38 years were included in the study. They were divided in to five groups according tonumber of risk factors they had for developing CAD. Following risk factors were included in the study (hypertension,diabetes ,smoking, obesity, hyper-lipidemia, family history of CAD.). All of them underwent E.T.T over treadmill usingmodified Bruce protocol. Test was considered positive if 2mm or more ST segment depression was noted .those testedpositive had coronary angiogram done to confirmed IHD. Results: Seven out of 100 tested positive for IHD on E.T.T.Those tested positive underwent coronary angiography 6 out of seven showed significant narrowing of coronaryarteries and 1 had normal angiogram. These results showed that E.T.T has a 76% sensitivity and 87% Specificity.Conclusion: E.T.T is an important, reliable and cost effective test to detect latent CAD in asymptomatic persons whohad multiple risk factors for developing CAD.
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Gaunt, Helen. "Exercise tolerance testing." British Journal of Cardiac Nursing 14, no. 1 (January 2, 2019): 31–34. http://dx.doi.org/10.12968/bjca.2019.14.1.31.

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Silva-Filho, Antonio, Luana Azoubel, Rodrigo Barroso, Erika Carneiro, Carlos Dias-Filho, Rachel Ribeiro, Alessandra Garcia, Carlos Dias, Bruno Rodrigues, and Cristiano Mostarda. "A Case-control Study of Exercise and Kidney Disease: Hemodialysis and Transplantation." International Journal of Sports Medicine 40, no. 03 (January 31, 2019): 209–17. http://dx.doi.org/10.1055/a-0810-8583.

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AbstractWe aimed to analyze the effect of an exercise training program in autonomic modulation, and exercise tolerance of hemodialysis and kidney-transplanted patients. 4 groups of exercised and non-exercised patients undergoing hemodialysis and kidney-transplanted subjects had their biochemical tests, and heart rate variability evaluations analyzed. Also, sleep quality, anxiety and depression questionnaires were evaluated. Both exercised groups showed improvements in cardiovascular autonomic modulation, biochemical markers, and exercise tolerance after the exercise training program. The exercised kidney-transplanted patients group showed better improvements in cardiovascular autonomic modulation, biochemical markers, and exercise tolerance when compared to the exercised hemodialysis patients group. Both groups showed improvements in sleep quality, anxiety, and depression. The group of kidney-transplanted patients show better results in the cardiovascular autonomic modulation than subjects undergoing hemodialysis. However, the patients undergoing hemodialysis showed improvements in blood pressure, HDL, hemoglobin and phosphorus, changes not observed in the kidney-transplanted group. Exercise is beneficial for both hemodialysis and kidney-transplanted patients groups. However, exercise programs should be focused mainly in improving cardiovascular risk factors in the HD patients.
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Wakabayashi, Hidetaka. "Nutrition and Exercise Tolerance." Japanese Journal of Rehabilitation Medicine 59, no. 1 (January 18, 2022): 40–46. http://dx.doi.org/10.2490/jjrmc.59.40.

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Pettitt, Robert W., and Ida E. Clark. "High-Intensity Exercise Tolerance." Strength and Conditioning Journal 35, no. 2 (April 2013): 11–16. http://dx.doi.org/10.1519/ssc.0b013e31828a9520.

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Boudoulas, Harisios, and Carl V. Leier. "Zatebradine and exercise tolerance." Journal of the American College of Cardiology 27, no. 4 (March 1996): 951–53. http://dx.doi.org/10.1016/0735-1097(96)84779-6.

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Király, Michael A., Holly E. Bates, Natalia A. Kaniuk, Jessica T. Y. Yue, John H. Brumell, Stephen G. Matthews, Michael C. Riddell, and Mladen Vranic. "Swim training prevents hyperglycemia in ZDF rats: mechanisms involved in the partial maintenance of β-cell function." American Journal of Physiology-Endocrinology and Metabolism 294, no. 2 (February 2008): E271—E283. http://dx.doi.org/10.1152/ajpendo.00476.2007.

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Exercise improves glucose tolerance in obese rodent models and humans; however, effects with respect to mechanisms of β-cell compensation remain unexplained. We examined exercise's effects during the progression of hyperglycemia in male Zucker diabetic fatty (ZDF) rats until 19 wk of age. At 6 wk old, rats were assigned to 1) basal-euthanized for baseline values; 2) exercise-swam individually for 1 h/day, 5 days/wk; and 3) controls ( n = 8–10/group). Exercise (13 wk) resulted in maintenance of fasted hyperinsulinemia and prevented increases in fed and fasted glucose ( P < 0.05) compared with sham-exercised and sedentary controls ( P < 0.05). β-Cell function calculations indicate prolonged β-cell adaptation in exercised animals alone. During an intraperitoneal glucose tolerance test (IPGTT), exercised rats had lower 2-h glucose ( P < 0.05) vs. controls. Area-under-the-curve analyses from baseline for IPGTT glucose and insulin indicate improved glucose tolerance with exercise was associated with increased insulin production and/or secretion. β-Cell mass increased in exercised vs. basal animals; however, mass expansion was absent at 19 wk in controls ( P < 0.05). Hypertrophy and replication contributed to expansion of β-cell mass; exercised animals had increased β-cell size and bromodeoxyuridine incorporation rates vs. controls ( P < 0.05). The relative area of GLUT2 and protein kinase B was significantly elevated in exercised vs. sedentary controls ( P < 0.05). Last, we show formation of ubiquitinated protein aggregates, a response to cellular/oxidative stress, occurred in nonexercised 19 wk-old ZDF rats but not in lean, 6 wk-old basal, or exercised rats. In conclusion, improved β-cell compensation through increased β-cell function and mass occurs in exercised but not sedentary ZDF rats and may be in part responsible for improved glucoregulation.
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Dickson, Eric W., Christopher P. Hogrefe, Paula S. Ludwig, Laynez W. Ackermann, Lynn L. Stoll, and Gerene M. Denning. "Exercise enhances myocardial ischemic tolerance via an opioid receptor-dependent mechanism." American Journal of Physiology-Heart and Circulatory Physiology 294, no. 1 (January 2008): H402—H408. http://dx.doi.org/10.1152/ajpheart.00280.2007.

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Exercise increases serum opioid levels and improves cardiovascular health. Here we tested the hypothesis that opioids contribute to the acute cardioprotective effects of exercise using a rat model of exercise-induced cardioprotection. For the standard protocol, rats were randomized to 4 days of treadmill training and 1 day of vigorous exercise ( day 5), or to a sham exercise control group. On day 6, animals were killed, and global myocardial ischemic tolerance was assessed on a modified Langendorff apparatus. Twenty minutes of ischemia followed by 3 h of reperfusion resulted in a mean infarct size of 42 ± 4% in hearts from sham exercise controls and 21 ± 3% ( P < 0.001) in the exercised group. The cardioprotective effects of exercise were gone by 5 days after the final exercise period. To determine the role of opioid receptors in exercise-induced cardioprotection, rats were exercised according to the standard protocol; however, just before exercise on days 4 and 5, rats were injected subcutaneously with 10 mg/kg of the opioid receptor antagonist naltrexone. Similar injections were performed in the sham exercise control group. Naltrexone had no significant effect on baseline myocardial ischemic tolerance in controls (infarct size 43 ± 4%). In contrast, naltrexone treatment completely blocked the cardioprotective effect of exercise (infarct size 40 ± 5%). Exercise was also associated with an early increase in myocardial mRNA levels for several opioid system genes and with sustained changes in a number of genes that regulate inflammation and apoptosis. These findings demonstrate that the acute cardioprotective effects of exercise are mediated, at least in part, through opioid receptor-dependent mechanisms that may include changes in gene expression.
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Hamazaki, Nobuaki, Kentaro Kamiya, and Atsuhiko Matsunaga. "Simplified Evaluation of Exercise Tolerance." Japanese Journal of Rehabilitation Medicine 59, no. 1 (January 18, 2022): 4–11. http://dx.doi.org/10.2490/jjrmc.59.4.

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McAllister, Richard M., Michael D. Delp, and M. Harold Laughlin. "Thyroid Status and Exercise Tolerance." Sports Medicine 20, no. 3 (September 1995): 189–98. http://dx.doi.org/10.2165/00007256-199520030-00005.

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Dissertations / Theses on the topic "Exercise tolerance"

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Staiano, Walter. "Mind over muscle? Psychobiology of exercise tolerance." Thesis, Bangor University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.613639.

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It has always been of great interest for scientists to study human performance and fatigue in order to better understand the limiting factors and determinants, which ultimately rule exercise tolerance in humans. In the last decades, the focus has moved to study fatigue and human performance not only from a physiological point of view but also to integrate it with psychophysiological mechanisms in order to reach a fuller understanding of fatigue processes and its implications on exercise performance. The aim of this thesis was to analyse the most prominent models of exercise tolerance and delineate psychological and physiological factors determining and/or limiting exercise performance. Moreover, the role of "effort" and its implications for exercise tolerance has been defined and elucidated. In chapter 2, it has been shown that maximal voluntary cycling power measured before and immediately after exhaustive cycling exercise does not decrease below the constant power at which participants were cycling at exhaustion. Such decrease in power, therefore, does not explain and challenge the traditional assumptions that in high intensity aerobic exercise muscle fatigue causes exhaustion, which occurs when the power generated from the muscles does not match any longer the power required by the task. Moreover, this study suggests the implication of other psychobiological variables such as rating of perceived exertion as important determinant and main limiting factor of exercise tolerance In chapter 3 has been tested the hypothesis that rating of perceived exertion and naturally occurring muscle pain, the two main perceptual determinants influencing physical performance have a different impact on physical performance. Muscle pain unpleasantness (Cook's scale) and rating of perceived exertion (RP E) (Borg's scale) were rated during a high intensity aerobic cycling test. During the cycling task, a constant increase in RPE was reported until subjects withdrew exercise while naturally occurring muscle pain rating increased at a moderate level without reaching the maximal rating. These findings suggest a high correlation between rating of perceived exertion and high intensity cycling at exhaustion and minimize the impact of naturally occurring muscle pain as limiting factor in aerobic performance. In chapter 4 it has been tested the validity and efficacy of a novel protocol to measure neural correlates of rating of perceived exertion using functional magnetic resonance imaging (fMRI). By comparing two different conditions: Fatigued leg vs. Non fatigued Leg, nine participants performed a series of leg extensions tasks alternating both legs. During this task, brain activation was measured using a 3 Tesla fMRI scanner and rating of perceived exertion has been recorded. Main results have shown an increase in rating of perceived exertion concomitantly to an increase in central motor command across the series of leg extension task performed and a significant activation of the cingulate gyrus and insular cortex has been detected when comparing higher ratings of effort compared to lower ones. These new findings may help the understanding of the neurobiology of perceived exertion and the brain areas and neural processes implicated with an increase of the rating of perceived exertion. Moreover, it elucidates the role of effort-based decisionmaking mechanisms related with perceived exertion. Overall, our findings showed the validity of a more psychophysiological approach to study complex processes of fatigue and to delineate main determinants involved in human performance with particular attention to the rating of perceived exertion. It redefined the role and the impact of exercise-related muscle pain in endurance performance. Finally, it proposes new neurophysiological insights into the origin and development of perceptions of effort in the brain. iii
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Ward, Judith Ann. "Role development of nurses supervising exercise tolerance tests." Thesis, University of Canterbury. Health Sciences Centre, 2010. http://hdl.handle.net/10092/5228.

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Exercise Tolerance Testing (ETT) is widely accepted as an important diagnostic and prognostic tool and its primary purpose is to assess patients with known or suspected coronary artery disease. Previous studies have focused on concordance between doctors and other supervising personnel in regards to safety outcomes. ETTs are increasingly supervised by nurses now as a result of medical devolvement in this role. This study contributes a new perspective to international literature and focuses on understanding the process of role development for cardiac nurses who supervise ETTs. The overall aim was to gain greater understanding of how cardiac nurses have developed in the role of supervising ETTs and what their process has been. This is a mixed methods study that has utilised both qualitative descriptive techniques and descriptive quantitative data. These data were obtained by individual interviews with ETT nurses and the Clinical Director of Cardiology, and a survey of technicians who work alongside the ETT nurses at a tertiary hospital. Data were also obtained from a national survey of cardiac centres in New Zealand. Both methods were employed to give greater depth to the subject and place local findings in context with national data and international literature. Findings show there have been a number of international and local evolutionary factors contributing to the emergence of the ETT nurse’s role over time. Specific themes emerged from the interviews that describe individual process of role development. Technicians identified that the ETT service has improved as a consequence of having ‘dedicated ETT nurses’. Variability in regards to work place practices, training and assessment were found in the national survey. There is further potential for both increasing the number of nurses practicing as ETT nurses and further expansion of the role, however continued fragmentation, inconsistent service delivery and variation in national standards for practice in New Zealand may be barriers to collective and individual role development.
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Davies, Matthew John. "Limitations to exercise tolerance in health and disease." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/20510/.

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Exercise tolerance, the ability to sustain an exercise task, is a key determinant of performance, morbidity, mortality and quality of life. However, the fatigue mechanisms that underpin exercise tolerance remain poorly understood. The aim of this thesis was to determine: 1) the origins of fatigue causing the limit of tolerance (LoT) during whole-body dynamic exercise in which V̇O2max is attained, and 2) how this is altered by the task demands and in the presence of chronic heart failure (CHF). To assess this, maximum voluntary isokinetic cycling power was measured before, during and instantaneously at LoT of exercise, and compared to the task demands. To provide additional insight these power data were supplemented by gas exchange and electromyography measures. First, a series of ramp-incremental exercise tests were performed, using different ramp-incrementation rates to change power demand at LoT. Next, the power-tolerable duration relationship was used to investigate the effect of altering the power demand during constant-power exercise. In both studies, reducing power demands, and as a consequence slowing the rate of energy utilisation and metabolite build-up, caused a significant reserve in maximal voluntary power at LoT to become increasingly evident. A reduced exercise tolerance is a cardinal symptom of CHF, the consequence of fatigue and/or dyspnoeic sensations during exercise. At the LoT in CHF, the magnitude of difference between the maximal voluntary isokinetic power and task demands was different between individuals, suggesting this measurement may distinguish between individuals for which either the exercising muscles, or mechanisms proximal to this, are ultimately limiting exercise. These data demonstrate that the origins of task failure at V̇O2max can be altered, depending on the exercise task and health status. In future it is hoped these data can inform development of targeted strategies, aimed at increasing exercise tolerance, and as a consequence enhancing quality of life.
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Carlier, Mauraine. "Profiling individuals for pleasurable physical exercise : the neuropsychology of tolerance of exercise intensity." Thesis, Lille 3, 2017. http://www.theses.fr/2017LIL30039/document.

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Les ressentis affectifs lors d’un exercice physique ont été révélés comme prédicteurs de l’engagement dans une pratique régulière (Mohiyeddini, Pauli, & Bauer, 2009). Toutefois, alors que certains ont la possibilité d’expérimenter positivement une séance, d’autres ne le sont pas (Van Landuyt, Ekkekakis, Hall , & Petruzzello, 2000). Une des explications avancées par la théorie du double mode (Ekkekakis, 2003) est que les différences observées entre les individus sont dues à l'interaction existante entre leurs capacités physiques et leurs caractéristiques psychologiques. Dans ce contexte, mon travail de thèse visait à comprendre comment une caractéristique psychologique telle que la tolérance à l'effort peut impacter les réponses affectives d’un individu lors de la réalisation d'un exercice physique modéré. La tolérance est définie comme un trait qui influence la capacité de l'individu à continuer à s'exercer à un niveau d'intensité imposé même si l'activité devient inconfortable ou désagréable (Ekkekakis, Hall et Petruzzello, 2005). À ce jour, mon travail a révélé que le concept de tolérance semble être un concept valable dans un échantillon européen francophone (étude I) et ce quelle que soit la pratique physique hebdomadaire auto-déclarée par les individus. Mon travail montre également que la tolérance à l’effort impacte effectivement les ressentis durant un exercice physique modéré (études II et IV). De plus, il semblerait que plus les individus sont tolérants à l'effort, plus ils sont capables de produire un exercice physique intense (études III et IV). Fait intéressant, les résultats ont révélé que le niveau de tolérance semble être associé à l'efficacité du fonctionnement cognitif. Plus précisément, plus les individus possèdent des fonctions exécutives efficaces, plus ils possèdent un niveau élevé de tolérance à l'effort (étude III). Enfin, l'effet positif d'un environnement de distraction musicale sur la perception de la difficulté de l'exercice physique n'a été révélé que chez les personnes très tolérantes (étude IV); suggérant que la musique peut ne pas être adaptée à tous. En conclusion, à travers la réalisation d'une évaluation psychométrique de la version francophone (étude I), d'un paradigme dual (étude II) et d'une évaluation neuropsychologique des capacités cognitives des individus (étude III), mon travail de thèse a révélé que la tolérance à l’effort semble être un concept francophone valide prédisant la réponse affective positive ou négative à l'exercice physique ; et ce que l’exercice se réalise dans le silence ou en la musique (Études II et IV)
Affective responses to physical exercise have been reported as predictors of the degree of engagement a personis ready to set in regular practice (Mohiyeddini, Pauli, & Bauer, 2009). According to the dual mode theory, theindividuals’ differences occurring during the exercise are due to the interplay between one’s physical abilitiesand one’s psychological characteristics (Ekkekakis, 2003) with some experiencing positively the session whileothers do not (Van Landuyt, Ekkekakis, Hall, & Petruzzello, 2000). Hence, my thesis work targeted the betterunderstanding of the effect of one of the psychological characteristics, the Tolerance to effort, on one’saffective responses during moderate physical exercise. Furthermore, I tried to reveal that a neuropsychologicaldefinition of the Tolerance to effort can be possible, even required for prescribing exercise program. Toleranceis defined as a trait that influences one’s ability to continue exercising at an imposed level of intensity even ifthe activity becomes uncomfortable or unpleasant (Ekkekakis, Hall, & Petruzzello, 2005). To date, my workhas revealed that the concept of Tolerance seems to be a valid concept in a French-speaking European sample(Study I). Interestingly, the results were revealed whatever the individuals’ self-reported weekly physicalpractice. My work also shows that the way one experiences a physical exercise depends on one’s tolerancelevel (Studies II and IV). Furthermore, the more individuals were tolerant to effort, the more they were able toproduce intense physical exercise (Studies III and IV). Interestingly, results revealed that one’s tolerance levelseems to be associated with one’s efficiency of cognitive functioning. More specifically, the more individualspossess efficient executive functions, the more they possess high level of Tolerance to effort (Study III).Finally, the positive effect of a musical distracting environment on one’s perception of physical exercisedifficulty was revealed only in high tolerant individuals (Study IV); suggesting that music may not be adaptedto all. To conclude, through the conduction of a psychometric assessment of the French-speaking version(Study I), a dual task paradigm (Study II) and a neuropsychological assessment of individuals cognitiveabilities (Study III), my thesis work has revealed that one’s tolerance level seems to be a French-speaking validconcept predicting the positive or negative affective response to physical exercise either in silence or in music(Studies II and IV) and defining one’s tolerance to effort from a cognitive standpoint
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Ferguson, Carrie. "Human Exercise Tolerance and the Parameters of Aerobic Function." Thesis, University of Leeds, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485174.

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The determinants of exercise intolerance are vital as they impinge on all individuals and are applicable across the whole spectrum of physical abili.ties. Key in this regard is the rate at which pulmonary oxygen uptake (Vo2 ) adapts to meet the energetic requirement at exercise onset, with this dependent on both the limit (i.e. v02 max) and the contour (i.e. v02 kinetics) of the v02 response. The purpose of this research was. to better understand the mechanisms. controlling v02 kinetics, and also to investigate the mechanisms determining high-intensity exercise tolerance, with specific reference to the hyperbolic power-duration (P-t) relationship. Three studies were conducted: 1. The role of 02 delivery in the control of v02 kinetics during moderate-intensity cycle ergometry. The presence of a delayed increase in deoxygenated [haemoglobin] in the region of muscle interrogation suggests that, during this delay phase, there is a dynamic balance between capillary perfusion and O2 consumption. Hence, it was \. concluded that 02 delivery is not a primary determinant of v02 kinetics, although its potential contribution under certain conditions is acknowledged. 2. Effects of supra-critical power (CP) 'priming' exercise on the profile and parameters of the P-t relationship (i.e. CP and W'J and parameters of aerobic function (i.e. the v02 time constant (rVo2 ), functional gain, lactate threshold (BJ .and Va] maJ during subsequent supra-CP exercise performed to the tolerable limit. 't vo2 , functional gain, SL, CP, v02 max were unaffected, but WI was decreased such that exercise tolerance was reduced as a predictable function of the re-define'd P-t relationship. It was concluded that WI is a key parameter of high-intensity exercise tolerance. 3. The kinetics of w' recovery, relative to ·those of v02 and blood [Lactate]. WI recovery was clearly dissociated both from that of metabolic rate and blood [Lactate], being slower compared to the former but more rapid relative to the latter. Consistent with the results of Chapter 4, exercise tolerance was reduced as a predictable function of the re-defined P-t relationship, supporting the notion that WI 'depletion' shapes high intensity exercise tolerance. Furthermore, doubt is cast on the current view that WI simply reflects a fixed 'store' of energy; rather, accumulation of fatigue-related metabolites instead may be important in defining the physiological constructs ofthis parameter.
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Bailey, Stephen John. "O2 uptake kinetics as a determinant of exercise tolerance." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3078.

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Oxygen uptake ( O2) kinetics determine the magnitude of the O2 deficit and the degree of metabolic perturbation and is considered to be an important determinant of exercise tolerance; however, there is limited empirical evidence to demonstrate that O2 kinetics is a direct determinant of exercise tolerance. The purpose of this thesis was to investigate O2 kinetics as a determinant of exercise tolerance and to consider its potential interaction with the maximum O2 ( O2max) and the W′ (the curvature constant of the hyperbolic power-duration relationship) in setting the tolerable duration of exercise. Recreationally-active adult humans volunteered to participate in the investigations presented in this thesis. Pulmonary O2 kinetics was assessed on a breath-by-breath basis and exercise tolerance was assessed by a time-to-exhaustion trial, with exhaustion taken as the inability to maintain the required cadence. A period of repeated sprint training (RST) resulted in faster phase II O2 kinetics (Pre: 29 ± 5, Post: 23 ± 5 s), a reduced O2 slow component (Pre: 0.52 ± 0.19, Post: 0.40 ± 0.17 L•min-1), an increased O2max (Pre: 3.06 ± 0.62, Post: 3.29 ± 0.77 L•min-1) and a 53% improvement in severe exercise tolerance. A reduced O2 slow component and enhanced exercise tolerance was also observed following inspiratory muscle training (Pre: 0.60 ± 0.20, Post: 0.53 ± 0.24 L•min-1; Pre: 765 ± 249, Post: 1061 ± 304 s, respectively), L-arginine (ARG) administration (Placebo: 0.76 ± 0.29 L•min-1 vs. ARG: 0.58 ± 0.23; Placebo: 562 ± 145 s vs. ARG: 707 ± 232 s, respectively) and dietary nitrate supplementation administered as nitrate-rich beetroot juice (BR) (Placebo: 0.74 ± 0.24 vs. BR: 0.57 ± 0.20 L•min-1; Placebo: 583 ± 145 s vs. BR: 675 ± 203, respectively). However, compared to a control condition without prior exercise, the completion of a prior exercise bout at 70% Δ (70% of the difference between the work rate at the gas exchange threshold [GET] and the work rate at the O2max + the work rate at the GET) with 3 minutes recovery (70-3-80) speeded overall O2 kinetics by 41% (Control: 88 ± 22 s, 70-3-80: 52 ± 13 s), but impaired exercise tolerance by 16% (Control: 437 ± 79 s, 70-3-80: 368 ± 48 s) during a subsequent exercise bout. When the recovery duration was extended to 20 minutes (70-20-80) to allow a more complete replenishment of the W′, overall kinetics was speeded to a lesser extent (by 23%; 70-20-80: 68 ± 19 s) whereas exercise performance was enhanced by 15% (70-20-80: 567 ± 125 s) compared to the control condition. In addition, the faster O2 kinetics observed when exercise was initiated with a fast start (FS; 35 ± 6 s), compared to an even start (ES; 41 ± 10 s) and slow start (SS; 55 ± 14 s) pacing strategy, allowed the achievement of O2max in a 3 minute trial and exercise performance was enhanced. Exercise performance was unaffected in a 6 minute trial with a FS, despite faster O2 kinetics, as the O2max was attained in all the variously paced trials. Therefore, the results of this thesis demonstrate that changes in exercise performance cannot be accounted for, purely, by changes in O2 kinetics. Instead, enhanced exercise performance appears to be contingent on the interaction between the factors underpinning O2 kinetics, the O2max and the W′, in support of the proposed ‘triad model’ of exercise performance.
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Alexander, Andrew M. "Exercise tolerance through the severe and extreme intensity domains." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/38249.

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Master of Science
Department of Kinesiology
Thomas J. Barstow
Background and Aim: The power-duration relationship accurately predicts exercise tolerance for constant power exercise performed in the severe intensity domain. At intensities above critical power (CP), the power-duration relationship establishes a hyperbolic curve. However, the prediction of exercise tolerance is currently unclear for work rates within the extreme intensity domain (durations <2min). We hypothesized that the power-duration relationship deviates from a linear 1/time relationship for WRs within the extreme intensity domain. Methods: Six men completed nine bilateral knee-extension tests on non-consecutive days and then performed 3 exercise tests in the severe intensity domain (S1-S3; T[subscript lim]>2–15min) and 4 in the extreme domain at 60%, 70%, 80%, and 90%1RM (T[subscript lim]<2min), in random order. Twitch force (Q[subscript tw]), maximal voluntary contraction (MVC), and voluntary activation (VA) were measured on the right vastus lateralis before and after <80s) each test; EMG was measured on the right vastus lateralis throughout each test. T[subscript lim] were plotted as a function of 1/Time. T[subscript lim] for the extreme intensities were compared to the predicted T[subscript lim] of the slope of the S1-S3 regression. Results: The r² for the severe domain 1/time model was 0.99 ± 0.007. T[subscript lim] for exercise at 60%1RM was not different than the predicted T¬lim, however, T¬lim for exercise at 70–90%1RM was shorter than the predicted T[subscript lim] (p<0.05). Post hoc analysis of the extreme domain (70–90%1RM) revealed a significant linear relationship, suggesting a W’ within the extreme domain (W’ext). T[subscript lim] of exercise at 60% 1RM was not different from the predicted value of the 1/Time relationship of the extreme domain. Q[subscript tw] and MVC were significantly decreased following exercise at S1-S3 and 60% 1RM, while no changes existed in Q[subscript tw] or MVC following exercise at 80 and 90%1RM. Further, no changes were found in VA following any exercise intensity. Conclusion: These data suggest that exercise tolerance in the extreme domain is limited by different factors than in the severe domain. However, there is a separate but measurable W’ext. Further, the factors limiting exercise in the extreme domain must be those from can be recovered by the time post-exercise measurements were made.
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Mendes, Olga de Castro [UNESP]. "Tolerância ao esforço físico e função cardíaca em diferentes períodos pós-indução de estenose aórtica em ratos." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/89172.

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Em razão de, em estudos que analisam a relação remodelação cardíaca e estenose aórtica supravalvar: ser importante a detecção precoce da disfunção ventricular; o método hemodinâmico ser ideal para detecção da disfunção, porém inadequado para estudos seqüenciais; a taquipnéia manifestar-se, geralmente, quando há deterioração cardíaca grave e não estar estabelecida a relação entre a capacidade funcional e a função ventricular, torna-se necessário identificar se o(s) primeiro(s) sinal(is) de intolerância ao esforço físico está(ão) relacionado(s) a disfunção ventricular. Assim, este trabalho tem como objetivos avaliar em diferentes períodos, 3, 6, 12 e 18 semanas, após indução de estenose aórtica supravalvar em ratos a: 1) função do ventrículo esquerdo em repouso e as alterações morfológicas cardíacas por meio do ecocardiograma; 2) tolerância ao esforço físico, em teste incremental em esteira; 3) relação entre a tolerância ao esforço físico e a função cardíaca determinada em repouso. Foram utilizados 37 ratos Wistar, jovens, machos divididos em dois grupos: controle operado (GC, n=13) e estenose aórtica supravalvar (GEAo, n=24). O GEAo foi submetido a cirurgia com implantação de um clipe na artéria aorta para a indução da estenose aórtica supravalvar. O GC foi submetido à mesma cirurgia, porém sem a implantação do clipe. Os animais foram mantidos com água e ração e ad libitum, em ambiente com temperatura controlada a 23°C e ciclo de luz invertido. Todos os procedimentos foram realizados no ciclo escuro, com o auxílio de iluminação fluorescente vermelha, cuja emissão de onda, por ser longa, não é percebida pelos animais. Dos 24 ratos do grupo estenose aórtica (GEAo), 10 morreram e dois apresentaram sinais de insuficiência cardíaca ao final do experimento, taquipnéia associada a derrame pleural...
Considering that, in studies analyzing the relationship between cardiac remodeling and supravalvar aortic stenosis, the early detection of ventricular dysfunction is important, the hemodynamic method is ideal to detect such dysfunction although it is inadequate for sequential studies, tachypnea is generally manifested when severe cardiac deterioration exists and that the relationship between functional capacity and ventricular function has not been established, it is necessary to identify whether the first sign(s) of exercise intolerance is(are) related to ventricular dysfunction. Hence, this study aimed at evaluating, in different periods - 3, 6, 12 and 18 weeks - after the induction of supravalvar aortic stenosis in rats, the following aspects: 1) function of the left ventricle at rest and cardiac morphological alterations by means of an echocardiogram; 2) exercise tolerance during an incremental test on a treadmill; 3) relationship between exercise tolerance and cardiac function determined at rest. Thirty-seven young male Wistar rats were used. The animals were separated into two groups: operated control (CG, n=13) and supravalvar aortic stenosis (GEAo, n=24). GEAo was submitted to surgery with the implantation of a clip on the aorta artery for induction of supravalvar aortic stenosis. GC was submitted to the same type of surgery although without clip implantation. The animals were given water and chow ad libitum and maintained in a controlledtemperature environment at 23°C and an inverted light-dark cycle. All the procedures were performed in the dark cycle by using red fluorescent illumination, whose long wave emission is not perceived by the animals. Of the 24 rats in the GEAo ten died and two presented signs of cardiac insufficiency at the end of the experiment, tachypnea associated with pleural stroke, thrombus in the left atrium and hypertrophia in the right ventricle, thus... (Complete abstract click electronic access below)
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Morgan, A. D. "Psychological and physiological factors affecting exercise tolerance in chronic bronchitis." Thesis, University of Edinburgh, 1986. http://hdl.handle.net/1842/19158.

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Morton, Darren. "Effect of lactate tolerance board training on upper body anaerobic performance." Thesis, University of Ballarat, School of Human Movement and Sport Sciences Ballarat, Vic. :, 1994. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/32852.

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"The present study was concerned with the effect of lactate tolerance training and a period of reduced training on the energy systems and associated performance."
Thesis (Master of Science (Human Movement)
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Books on the topic "Exercise tolerance"

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M, Steinacker Jürgen, Ward Susan A, and International Symposium on the Physiology and Pathophysiology of Exercise Tolerance (1994 : Ulm, Germany), eds. The physiology and pathophysiology of exercise tolerance. New York: Plenum Press, 1996.

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Steinacker, Jürgen M., and Susan A. Ward, eds. The Physiology and Pathophysiology of Exercise Tolerance. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3.

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J, Whipp Brian, Sargeant A. J, and Physiological Society (Great Britain), eds. Physiological determinants of exercise tolerance in humans. London: Portland Press on behalf of the Physiological Society, c c1999, 1999.

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Fundamentals of geometric dimensioning and tolerancing: Exercise workbook. 2nd ed. Wayne, Mich: Effective Training Inc., 1998.

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Broadbridge, Norma. A longitudinal study of exercise tolerance in adolescent schoolgirls. Birmingham: University of Birmingham, 1991.

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J, Balady Gary, and Pinã Ileana L, eds. Exercise and heart failure. Armonk, NY: Futura, 1997.

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Essentials of cardiopulmonary exercise testing. Champaign, IL: Human Kinetics, 1996.

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Smith, Nicola S. A. A study of exercise tolerance and health in female employees at Cadbury-Schweppes Bournville site. Birmingham: University of Birmingham, 1986.

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Institute, Nestlé Nutrition, ed. Nutritional coaching strategy to modulate training efficiency. Basel: Karger, 2013.

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Gerasimov, Sergey, and Irina Skovorodkina. Tolerance education in Junior schoolchildren. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1084985.

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The textbook presents the methodology of solving the problem of formation of tolerance in children of primary school age, the analysis of the legal framework of education for peace, non-violence, human rights and tolerance. Special attention is paid to the theoretical and practical aspects of tolerance in primary school children, didactic tools, the characteristics of the system of pedagogical means of education of tolerance at pupils of elementary school. Consists of a Preface, three chapters, conclusion, Glossary, bibliography and applications. Includes tables and diagrams that can be used in practical lessons with students of pedagogical colleges and universities. Each paragraph has a list of questions for self-examination and in-depth study delineated in this range of problems, exercises, assignments, a list of recommended literature. Intended for students of pedagogical colleges and educational institutions of higher education, and also for listeners of system of improvement of qualification and retraining of teachers.
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Book chapters on the topic "Exercise tolerance"

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LaCaille, Lara, Anna Maria Patino-Fernandez, Jane Monaco, Ding Ding, C. Renn Upchurch Sweeney, Colin D. Butler, Colin L. Soskolne, et al. "Exercise Tolerance Test." In Encyclopedia of Behavioral Medicine, 730. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1005-9_100604.

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Malik, Amyn, Gary V. Heller, and Gary V. Heller. "Exercise Tolerance Testing." In Handbook of Nuclear Cardiology, 173–78. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-2945-5_18.

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Gallagher, C. G., and D. D. Marciniuk. "Exercise in Chronic Respiratory Disease." In The Physiology and Pathophysiology of Exercise Tolerance, 169–74. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_24.

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Hughson, R. L., H. J. Green, S. M. Phillips, and J. K. Shoemaker. "Physiological Limitations to Endurance Exercise." In The Physiology and Pathophysiology of Exercise Tolerance, 211–17. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_31.

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Heipertz-Hengst, Christine. "The Horserider’S Spine During Exercise." In The Physiology and Pathophysiology of Exercise Tolerance, 233–38. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_34.

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Kochanski, Ryan, David Dornbos, and Yuchuan Ding. "Neuroprotection and Physical Preconditioning: Exercise, Hypothermia, and Hyperthermia." In Innate Tolerance in the CNS, 105–31. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-9695-4_5.

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Weicker, H., and G. Strobel. "Endocrine Regulation of Metabolism During Exercise." In The Physiology and Pathophysiology of Exercise Tolerance, 113–21. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_16.

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Pedersen, Bente Klarlund, and Thomas Rohde. "Exercise Physiology and the Immune System." In The Physiology and Pathophysiology of Exercise Tolerance, 175–77. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_25.

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Banister, E. W., R. H. Morton, and J. R. Fitz-Clarke. "Clinical Dose-Response Effects of Exercise." In The Physiology and Pathophysiology of Exercise Tolerance, 297–309. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5887-3_43.

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Derella, Cassandra C., Adeola A. Sanni, and Ryan A. Harris. "Oxidative Stress and Exercise Tolerance in Cystic Fibrosis." In Oxidative Eustress in Exercise Physiology, 183–91. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003051619-15.

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Conference papers on the topic "Exercise tolerance"

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Laviolette, L., F. Sava, AL Hamilton, S. Kesten, DE O'Donnell, KA Webb, and F. Maltais. "Obesity and Exercise Tolerance in COPD." In American Thoracic Society 2009 International Conference, May 15-20, 2009 • San Diego, California. American Thoracic Society, 2009. http://dx.doi.org/10.1164/ajrccm-conference.2009.179.1_meetingabstracts.a1549.

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Varughese, R. A., G. Y. Lam, A. Brotto, E. Bok, E. Y. Wong, D. Befus, R. Damant, G. Ferrara, M. Smith, and M. K. Stickland. "Reduced Exercise Tolerance in Long-COVID Patients." In American Thoracic Society 2021 International Conference, May 14-19, 2021 - San Diego, CA. American Thoracic Society, 2021. http://dx.doi.org/10.1164/ajrccm-conference.2021.203.1_meetingabstracts.a4116.

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Chlumsky, Jan, Martina Vasakova, Martina Sterclova, Jan Anton, and Peter Paluch. "Limitations of exercise tolerance in patients with IPF." In ERS International Congress 2017 abstracts. European Respiratory Society, 2017. http://dx.doi.org/10.1183/1393003.congress-2017.oa1965.

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Mokaddem Mohsen, S., A. Chaker, N. Ben Lazreg, K. Kechaou, M. Maalej, and S. Ben Khamsa Jameleddine. "Effects of Covid-19 pneumonia on submaximal exercise tolerance." In ERS International Congress 2022 abstracts. European Respiratory Society, 2022. http://dx.doi.org/10.1183/13993003.congress-2022.4212.

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Kawachi, Shohei, and Fujimoto Keisaku. "Metronome-paced incremental hyperventilation can be used to predict dynamic lung hyperinflation and exercise tolerance during exercise." In ERS International Congress 2020 abstracts. European Respiratory Society, 2020. http://dx.doi.org/10.1183/13993003.congress-2020.553.

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Gaber, Khalid, Fatma Alagouri, and Najat M. Aloshibi. "Spirometry measured broncho-constriction in patients attending cardiac exercise tolerance test." In ERS International Congress 2017 abstracts. European Respiratory Society, 2017. http://dx.doi.org/10.1183/1393003.congress-2017.pa2501.

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Turinese, Irene, Paolo Marinelli, Marco Rossetti, Giovanni Statuto, Tiziana Filardi, Matteo Bonini, Alberto Paris, Susanna Morano, and Paolo Palange. "Exercise tolerance and ventilatory response in patients with type-1 diabetes." In ERS International Congress 2016 abstracts. European Respiratory Society, 2016. http://dx.doi.org/10.1183/13993003.congress-2016.pa2284.

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Burke, Leanne, Paul Whittaker, and Daniel Peckham. "Impact Of Anaemia On The Exercise Tolerance Of Cystic Fibrosis Patients." In American Thoracic Society 2010 International Conference, May 14-19, 2010 • New Orleans. American Thoracic Society, 2010. http://dx.doi.org/10.1164/ajrccm-conference.2010.181.1_meetingabstracts.a2342.

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Chykiamis, Nikolaos, Matthew Armstrong, Vivien Spencer, Nick Lane, Tom Hartley, William Gray, Stephen Bourke, and Ioannis Vogiatzis. "Influence of the VitaBreath on Exercise Tolerance in Patients with COPD." In ERS International Congress 2018 abstracts. European Respiratory Society, 2018. http://dx.doi.org/10.1183/13993003.congress-2018.pa3361.

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Blanco, Isabel, Elena Gimeno, Diego A. Rodríguez, Jordi Vilaró, Joaquim Gea, Rosa Güell, Salud Santos, Josep Roca, and Joan Albert Barberà. "Reduced Exercise Tolerance In Patients With COPD And Associated Pulmonary Hypertension." In American Thoracic Society 2010 International Conference, May 14-19, 2010 • New Orleans. American Thoracic Society, 2010. http://dx.doi.org/10.1164/ajrccm-conference.2010.181.1_meetingabstracts.a5254.

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Reports on the topic "Exercise tolerance"

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Quick, Oliver, and Carlen Reed-Poysden. Cardiopulmonary Exercise Test: Interpretation and Application in Perioperative Medicine. World Federation of Societies of Anaesthesiologists, June 2022. http://dx.doi.org/10.28923/atotw.473.

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Within this tutorial we will examine key Cardiopulmonary Exercise Tolerance Test (CPET) variables, explore common patterns of physiological deviation by exercise-limiting pathology and then explain how to use these results to plan the perioperative journey.
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Quick, Oliver, and Carlen Reed-Poysden. Cardiopulmonary Exercise Test: Interpretation and Application in Perioperative Medicine. World Federation of Societies of Anaesthesiologists, June 2022. http://dx.doi.org/10.28923/atotw.473.

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Within this tutorial we will examine key Cardiopulmonary Exercise Tolerance Test (CPET) variables, explore common patterns of physiological deviation by exercise-limiting pathology and then explain how to use these results to plan the perioperative journey.
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Montain, Scott J., Michael N. Sawka, Bruce S. Cadarette, Mark D. Quigley, and James M. McKay. Physiological Tolerance to Uncompensable Heat Stress: Effects of Exercise Intensity, Protective Clothing, and Climate. Fort Belvoir, VA: Defense Technical Information Center, January 1994. http://dx.doi.org/10.21236/ada283851.

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Gao, Ying, Shuang Wang, Kai Yin, and Yue Yuan. Effects of pulmonary rehabilitation on exercise tolerance and quality of life in interstitial lung disease:a protocol for systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, January 2022. http://dx.doi.org/10.37766/inplasy2022.1.0064.

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Wang, Cuihua, Gang Liu, Jun Xing, Yahui Wang, Baoli Zhao, and Mingqi Zheng. The effects of high-intensity interval training vs. moderate-intensity continuous training on exercise tolerance and prognosis in Heart Failure and Coronary Artery Disease Cardiac: a systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, August 2020. http://dx.doi.org/10.37766/inplasy2020.8.0112.

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Pulmonary rehabilitation improves exercise tolerance in pulmonary fibrosis. National Institute for Health Research, March 2018. http://dx.doi.org/10.3310/signal-00570.

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