The Effects of Acute Exercise on Cognitive Performance in Hypoxic Conditions PDF Download

Author: Yongsuk Seo
Publisher:
ISBN:
Category : Anoxemia
Languages : en
Pages : 101

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Book Description
INTRODUCTION: Exposure to high altitude or hypoxia may elicit negative cognitive performance and mood state in many individuals. This may place the individuals at undue risk. Moderate intensity exercise may improve psychological and mood state at normoxia but little is known about its effect in hypoxia. PURPOSE: The purpose of this study was to quantify the effects of two exercise intensities on cognitive performance and mood state in normobaric hypoxia. METHOD: 19 young, healthy men completed the ANAM versions of the Go/No-Go task and Running Memory Continuous Performance Task (RMCPT) during baseline (21% O2) as well as during rest and cycle ergometer workloads that elicited 40 and 60% of adjusted VO2max in normobaric hypoxia (12.5% O2). RESULTS: During exercise at 40% and 60% of adjusted VO2max improved throughput score in RMCPT (p=0.023, p=0.006, respectively) and total mood disturbance (TMD) (p=0.009) compared to rest in hypoxia (p=0.015). In addition there was improved TMD during recovery compare to rest in hypoxia. There is no significant difference in throughput score of RMCPT and TMD between two exercise intensities. CONCLUSION: The current study demonstrated that at moderate exercise (i.e., 40-60% adjusted VO2max) attenuated the adverse effects of hypoxia on cognitive performance and mood. This finding may be beneficial for individuals to reduce the risk of impaired cognitive function and mood. Further studies are needed to replicate this current finding, and to clarify the possible mechanisms associated with the potential benefits of exercise on mood state in normobaric hypoxia.

Author: Terry McMorris
Publisher: John Wiley & Sons
ISBN: 0470740671
Category : Medical
Languages : en
Pages : 386

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Book Description
This textbook focuses on the relationship between physical exercise and cognition, a very timely and important topic with major theoretical and practical implications for a number of areas including ageing, neurorehabilitation, depression and dementia. It brings together a wide range of analytical approaches and experimental results to provide a very useful overview and synthesis of this growing field of study. The book is divided into three parts: Part I covers the conceptual, theoretical and methodological underpinnings and issues. Part II focuses on advances in exercise and cognition research, with appropriate sub-sections on ‘acute’ and ‘chronic’ exercise and cognition. Part III presents an overview of the area and makes suggestions for the direction of future research. This text provides a cutting-edge examination of this increasingly important area written by leading experts from around the world. The book will prove invaluable to researchers and practitioners in a number of fields, including exercise science, cognitive science, neuroscience and clinical medicine. Key Features: Unique in-depth investigation of the relationship between physical exercise and brain function. Covers theoretical approaches and experimental results and includes chapters on the latest developments in research design. Examines the effects of both acute and chronic exercise on brain function. International list of contributors, who are leading researchers in their field.

Author: Jeffrey Daniel Labban
Publisher:
ISBN:
Category : Cognition
Languages : en
Pages : 74

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Book Description
"Though the body of literature converges on the notion that acute exercise has a small, positive effect on cognitive performance in general (Chang, Labban, Gapin, & Etnier, 2012; Lambourne & Tomporowski, 2010), effects on certain cognitive domains remain poorly understood. Among these cognitive domains, memory is one of the least studied within the acute exercise literature. Despite the lack of attention in the exercise literature, memory is an intriguing and important domain of study. Most effects of acute exercise on cognitive function abate relatively quickly following exercise cessation. However, if exercise can improve the ability to process and/or store newly acquired information, then it is conceivable that the product of these effects (i.e. - improved recall) could be observed well after exercise cessation. The purpose of this study was twofold. The primary purpose was to test whether a single bout of aerobic exercise affects performance on a long-term memory task. The secondary purpose was to determine whether that effect operates primarily through the encoding and/or consolidation processes of long-term memory formation. The secondary purpose was tested by manipulating the timing of exercise relative to exposure to the to-be-remembered material (word list). A within-subjects, repeated measures design was used. Participants completed 3 conditions in randomized order, including 2 treatment conditions and one control condition. Treatment conditions involved participants exercising either immediately prior to or immediately following word list exposure. Exercise prior to exposure could impact encoding or consolidation (E+C); whereas, exercise following exposure could only impact consolidation (C). The control condition involved no exercise (NE) at all. Exercise consisted of 20 minutes, at moderate intensity, on a cycle ergometer, as well as a 5-minute warm-up and a 5-minutecool-down (30 minutes total). Memory for the word list was assessed 60 minutes and 24 hours after participants had finished listening to it. Analyses revealed that the E+C condition produced significantly better recall of the word list following both the 60-minute (?p2 = 0.24) and 24-hour (?p2 = 0.22) delays. Pairwise comparisons revealed statistically significant differences in recall for the E+C condition versus the NE condition; however, no differences were observed involving the C condition. These results suggested that acute exercise can benefit long-term memory, and that this benefit is accomplished primarily through an effect on the encoding process."--Abstract from author supplied metadata.

Author: Jeffrey D. Labban
Publisher:
ISBN:
Category : Cognition
Languages : en
Pages : 43

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"The purpose of this study was to examine whether acute aerobic exercise of moderate intensity has an effect on cognitive performance on a long-term memory task; and secondly, if that effect is influenced by the order in which the exercise is introduced relative to the memory task. Sixty-four college students composed the sample, which was divided into four conditions: exercise-rest, rest-exercise, exercise-exercise, and rest-rest. Recall was assessed using the Standard New York University (NYU) Paragraphs for immediate and delayed recall. Participants were read two separate paragraphs. Following a 35-minute delay, participants were then asked to recount as much of the paragraphs as they could, as close to verbatim as possible. The first word in each condition denotes the participant's task prior to paragraph exposure, and the second denotes their task during the 35-minute delay. ANOVA examining differences in delayed recall performance between the two groups completing one bout of exercise (exercise-rest and rest-exercise) and the rest-rest group was significant, F(2,45) = 4.37, p = 0.018. Helmert planned contrast revealed that the exercise-rest group performed significantly better on delayed recall testing than all other groups, F(1,32) = 3.81, p

Author: Thomas Benjamin Williams
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
This note is part of Quality testing.

Author: Michelle R. VanTieghem
Publisher:
ISBN:
Category :
Languages : en
Pages : 112

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Book Description

Author: Terry McMorris
Publisher: Academic Press
ISBN: 0128011483
Category : Psychology
Languages : en
Pages : 508

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Book Description
Exercise-Cognition Interaction: Neuroscience Perspectives is the only book on the market that examines the neuroscientific correlation between exercise and cognitive functioning. The upsurge in research in recent years has confirmed that cognitive-psychology theory cannot account for the effects of exercise on cognition, and both acute and chronic exercise effect neurochemical and psychophysiological changes in the brain that, in turn, affect cognitive functioning. This book provides an overview of the research into these effects, from theoretical research through current studies that emphasize neuroscientific theories and rationales. It addition, users will find a thorough examination of the effects of exercise interventions on cognitive functioning in special populations, including the elderly, children, and those suffering from a variety of diseases, including schizophrenia, diabetes, and an array of neurological disorders. With contributions from leading researchers in the field, this book will be the go-to resource for neuroscientists, psychologists, medical professionals, and other researchers who need an understanding of the role exercise plays in cognitive functioning. - Provides a comprehensive account of how exercise affects brain functioning, which in turn affects cognition - Covers both theory and empirical research - Presents a thorough examination of the effects of exercise interventions on cognitive functioning in special populations, including the elderly, children, and those suffering from a variety of diseases - Examines neurochemical, psychophysiological, and genetic factors - Covers acute and chronic exercise

Author: Peixuan Zheng
Publisher:
ISBN:
Category : Electronic dissertations
Languages : en
Pages : 0

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Book Description
Physical activity (PA) is increasingly recognized as an effective approach for improving cognitive function. However, it is unclear how short-term PA or physical inactivity might influence cognition, and whether this effect is associated with other health outcomes such as vascular function. A series of three studies were conducted to address this knowledge gap. The first study systematically reviewed and meta-analyzed 90 effects from 16 randomized controlled trials to examine the effect of acute exercise on cognitive function in healthy older adults aged 60 years or above. The results revealed that acute exercise elicited a small but significant improvement in cognitive function compared to the non-exercise control condition (standardized mean difference [SMD] = 0.17, p = 0.003), and greater improvements were found in time- than accuracy-related cognitive outcomes (SMD = 0.24 versus 0.11, p 0.05). The second study investigated the effects of a single bout of moderate-intensity walking on cognitive and vascular function in physically inactive older adults aged 60 years or above. Compared to the control (sitting) condition, acute exercise (30-min walking at 100 steps/min) significantly improved performance in executive function, whereas reduced carotid to femoral pulse wave velocity (p-values 0.05). Changes in processing speed and aortic augmentation index were similar between conditions (p 0.05), whereas central mean arterial blood pressure was increased after sitting (p

Author: Olivier Girard
Publisher: Frontiers Media SA
ISBN: 2889454061
Category :
Languages : en
Pages : 169

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Book Description
In the past, ‘traditional’ moderate-intensity continuous training (60-75% peak heart rate) was the type of physical activity most frequently recommended for both athletes and clinical populations (cf. American College of Sports Medicine guidelines). However, growing evidence indicates that high-intensity interval training (80-100% peak heart rate) could actually be associated with larger cardiorespiratory fitness and metabolic function benefits and, thereby, physical performance gains for athletes. Similarly, recent data in obese and hypertensive individuals indicate that various mechanisms – further improvement in endothelial function, reductions in sympathetic neural activity, or in arterial stiffness – might be involved in the larger cardiovascular protective effects associated with training at high exercise intensities. Concerning hypoxic training, similar trends have been observed from ‘traditional’ prolonged altitude sojourns (‘Live High Train High’ or ‘Live High Train Low’), which result in increased hemoglobin mass and blood carrying capacity. Recent innovative ‘Live Low Train High’ methods (‘Resistance Training in Hypoxia’ or ‘Repeated Sprint Training in Hypoxia’) have resulted in peripheral adaptations, such as hypertrophy or delay in muscle fatigue. Other interventions inducing peripheral hypoxia, such as vascular occlusion during endurance/resistance training or remote ischemic preconditioning (i.e. succession of ischemia/reperfusion episodes), have been proposed as methods for improving subsequent exercise performance or altitude tolerance (e.g. reduced severity of acute-mountain sickness symptoms). Postulated mechanisms behind these metabolic, neuro-humoral, hemodynamics, and systemic adaptations include stimulation of nitric oxide synthase, increase in anti-oxidant enzymes, and down-regulation of pro-inflammatory cytokines, although the amount of evidence is not yet significant enough. Improved O2 delivery/utilization conferred by hypoxic training interventions might also be effective in preventing and treating cardiovascular diseases, as well as contributing to improve exercise tolerance and health status of patients. For example, in obese subjects, combining exercise with hypoxic exposure enhances the negative energy balance, which further reduces weight and improves cardio-metabolic health. In hypertensive patients, the larger lowering of blood pressure through the endothelial nitric oxide synthase pathway and the associated compensatory vasodilation is taken to reflect the superiority of exercising in hypoxia compared to normoxia. A hypoxic stimulus, in addition to exercise at high vs. moderate intensity, has the potential to further ameliorate various aspects of the vascular function, as observed in healthy populations. This may have clinical implications for the reduction of cardiovascular risks. Key open questions are therefore of interest for patients suffering from chronic vascular or cellular hypoxia (e.g. work-rest or ischemia/reperfusion intermittent pattern; exercise intensity; hypoxic severity and exposure duration; type of hypoxia (normobaric vs. hypobaric); health risks; magnitude and maintenance of the benefits). Outside any potential beneficial effects of exercising in O2-deprived environments, there may also be long-term adverse consequences of chronic intermittent severe hypoxia. Sleep apnea syndrome, for instance, leads to oxidative stress and the production of reactive oxygen species, and ultimately systemic inflammation. Postulated pathophysiological changes associated with intermittent hypoxic exposure include alteration in baroreflex activity, increase in pulmonary arterial pressure and hematocrit, changes in heart structure and function, and an alteration in endothelial-dependent vasodilation in cerebral and muscular arteries. There is a need to explore the combination of exercising in hypoxia and association of hypertension, developmental defects, neuro-pathological and neuro-cognitive deficits, enhanced susceptibility to oxidative injury, and possibly increased myocardial and cerebral infarction in individuals sensitive to hypoxic stress. The aim of this Research Topic is to shed more light on the transcriptional, vascular, hemodynamics, neuro-humoral, and systemic consequences of training at high intensities under various hypoxic conditions.

Author: Stéphane Perrey
Publisher: MDPI
ISBN: 3036501924
Category : Medical
Languages : en
Pages : 272

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Book Description
The improvement of exercise performance in sports not only involves the enhancement of physical strength, but also includes the development of psychological and cognitive functions. There is an increasing body of evidence to show that physical exercise is a powerful way to improve a number of aspects of cognition and brain function at the systemic and behavioral levels. Yet, several questions remain: What type of exercise program is optimal for improving cognitive functions? What are the real effects of certain innovative exercise protocols on the relationship between behavior and the brain? To what extent do ergogenic aids boost cognitive function? How efficient are neuromodulation techniques in relation to behavioral performance? The answers to these questions likely require multidisciplinary insights not only from physiologists and sports scientists, but also from neuroscientists and psychologists. The manuscripts published (16 research papers and one perspective article from various academic fields) in this Special Issue Book “Exercise: A Gate That Primes the Brain to Perform” bring together current knowledge and novel directions in human exercise-cognition research dealing with performance. This book showcases the various relationships between cognitive function, brain activity, and behavioral performance with applications in sports and exercise science.