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Book The Influence of an Acute Bout of Aerobic Exercise on Cortical Contributions to Motor Preparation and Execution

Download or read book The Influence of an Acute Bout of Aerobic Exercise on Cortical Contributions to Motor Preparation and Execution written by Jonathan S. Thacker and published by . This book was released on 2012 with total page 73 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing evidence supports the use of physical activity for modifying brain activity and overall neurological health (Hillman et al, 2008). Specifically, aerobic exercise appears to improve cognitive efficacy with regards to decisional oddball tasks shown through the P300, whose amplitude and latency is augmented (Magnié et al., 2000). Furthermore, the effects of an acute bout of aerobic exercise on cardiovascular function are well established and are sustained following exercise cessation. Based on these findings, we proposed that (1) an acute bout of exercise may modulate movement-related cortical excitability within motor areas and (2) that transient effects would be sustained as long as heart rate (HR) remained elevated. Subjects (n=23) were placed in a soundproof booth and instructed to perform a self-paced unimanual ballistic wrist extension every 3-6 seconds of the right wrist while holding a moveable handle. The motion involved a brisk contraction followed by relaxation and positional reset, collected continuously for approximately 8 minutes. Electroencephalography was used to measure movement-related cortical activity of the Bereitschaftspotential (BP) time-locked to onset of muscle activity associated with movement. The BP is a slow negative self-paced movement related cortical potential that precedes movement by approximately 1500ms. Current work commonly separates the BP into 3 main components early, late, and re-afferent Potentials. The early BP is representative of motor preparation of supplementary motor area (SMA) activity while the late component is representative of motor execution from primary motor cortex (M1). Early and late components are often distinguished by a a characteristic change in slope; where the early BP is a slow negative rise and the late components a steeper negative deflection beginning approximately 500ms prior to movement onset. Broken down further the late component consists of a portion of negative slope before giving rise to a peak approximately 100ms after movement onset known as the motor potential (MP). Following baseline measures, subjects performed 20 minutes of aerobic exercise at a moderate intensity (70% of age-predicted maximum heart rate) on a recumbent cycle ergometer. After the cessation of exercise, BP measures were recorded at two time points: immediately post-exercise (Post) and following a return to iv baseline HR (Post[Rest]) and two additional measures separated by 15 minutes each (Post[Rest2] and Post[Rest3]) which was, on average, 45 minutes after the cessation of exercise. Electromyography (EMG) was employed over the extensor carpi radialis muscle belly to describe muscle burst activity and onset characteristics. Results determined that Early but not Late BP was influenced by aerobic exercise. This early movement related cortical adaptation is indicative of enhanced processing within supplementary motor area. Moreover, this effect was sustained for up to an hour and 15 minutes following exercise cessation. This data is suggestive that aerobic exercise influences on motor related cortical excitability is not driven by an aerobic exercise effect and is more indicative of a delayed neurotransmitter effect.

Book The Effect of Acute Aerobic Exercise on the Consolidation of Motor Memories

Download or read book The Effect of Acute Aerobic Exercise on the Consolidation of Motor Memories written by Sarah Holman and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Previous research has shown that acute aerobic exercise performed prior to motor training can assist with motor skill acquisition through enhancement of motor cortical plasticity. Recently, studies using high intensity interval training performed post-motor training have found improvements in the retention of the motor skill. This suggests that exercise performed post-motor training may enhance motor memory consolidation, although the mechanisms of this are unclear. We hypothesized that acute continuous moderate intensity exercise performed post-motor training would also assist with motor skill retention and that this behavioural change would be positively correlated with neural markers of cortical plasticity. Thirty-three participants were randomly assigned to one of two groups: exercise (EXE) or control (CON). During the first visit, participants completed a motor training session of a bimanual wrist flexion task using wrist movements to control the cursor position on a computer screen to reach a target. Movement to the target was cued, allowing for the generation of a cortical movement-related potential (MRP). MRP modulations represent changes in the excitability of the brain prior to movement which are associated with task performance. After motor training, EXE performed a session of continuous moderate intensity exercise on a recumbent bike for 20 minutes (70% of heart rate reserve (HRR)). CON read for the same amount of time. Both groups completed two post-training tests after the exercise or rest: one 10 minutes after the exercise/rest session (post-training test 1), and one once heart rate returned to resting level in EXE (post-training test 2) or 30 minutes after rest in CON. Participants returned to the lab 1 day and 7 days later to complete retention and transfer tests of the task. MRPs were measured using electroencephalography (EEG) to investigate neural markers related to motor performance and exercise during the first visit. To assess behavioural changes measures of speed and accuracy were collected at all timepoints as response time (RT) and root mean square (RMS) of the difference in the actual from the ideal trajectory of the cursor. Results show that EXE had a smaller change in accuracy scores compared to CON at both retention timepoints, however this group difference was only significant at the 7 day retention. There were no significant differences in speed between the groups at the retention tests and no significant differences in accuracy or speed between the groups at the transfer tests. Consistent with previous motor training studies our MRP data shows an increase in amplitude from early to late training, however this was only significant at CZ and not FCZ. MRP amplitude was not significantly increased after exercise at the post-training test 2. Correlational analysis revealed a significant correlation between the change in the MRP amplitude sum from early to late training and the change in RT from the last 5 trials of post-training 2 to retention 1. This was only observed in EXE and when both groups were pooled together. Our results suggest that post-motor training exercise helps to retain the accuracy of the skill after motor training. Additionally, there may be a relationship between excitability increases during training and performance of the skill at retention which may be enhanced with post-motor training exercise. These results inform motor learning paradigms and future studies with other populations including older adults and neurorehabilitation patients.

Book Exercise Cognition Interaction

Download or read book Exercise Cognition Interaction written by Terry McMorris and published by Academic Press. This book was released on 2015-11-06 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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

Book The Influence of Acute Aerobic Exercise on Excitability and Rapid Plasticity in the Primary Motor Cortex

Download or read book The Influence of Acute Aerobic Exercise on Excitability and Rapid Plasticity in the Primary Motor Cortex written by Amaya M. Singh and published by . This book was released on 2016 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this thesis was to explore the influence of a single session of aerobic exercise on excitability changes and markers of short-term plasticity in the human primary motor cortex (M1). To that end, this thesis consists of 4 studies. In the first experiment, we explored whether acute exercise alone could modulate resting excitability in M1. We demonstrated that 20 minutes of moderate-intensity stationary biking could suppress intracortical inhibition and enhance intracortical facilitation in a non-exercised upper limb muscle for up to 30 minutes following exercise completion. Since decreases in inhibition are a necessary precursor to neuroplastic changes, we then investigated whether exercise could enhance the induction of rapid plasticity. We used paired-associative stimulation (PAS), a technique that reliably induces long-term potentiation (LTP)-like plasticity in M1 and found that a preceding bout of exercise enhanced the effectiveness of the intervention. Next, we examined whether these cortical changes were consistent across the entire cortical representation of the target muscle and if they were related to any measurable changes in motor performance. We paired exercise with a bimanual motor training task and observed that while performance was not enhanced compared to training alone, exercise facilitated training-related cortical excitability increases throughout the representation of the trained muscle. Finally, we demonstrated that exercise has opposite effects on the induction of long-term depression (LTD), suggesting that exercise is biased towards increasing excitability, and that this influence is evident even when exercise is performed following, rather than prior to, plasticity induction. This thesis demonstrates that aerobic exercise may optimize the conditions for experience-dependent plasticity to occur and provides a rationale for the use of exercise as an adjunct to interventions that aim to induce LTP in human motor cortex.

Book Neuroplasticity and Rehabilitation

Download or read book Neuroplasticity and Rehabilitation written by Sarah A. Raskin and published by . This book was released on 2011 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brain plasticity is the focus of a growing body of research with significant implications for neurorehabilitation. This state-of-the-art volume explores ways in which brain-injured individuals may be helped not only to compensate for their loss of cognitive abilities, but also possibly to restore those abilities. Expert contributors examine the extent to which damaged cortical regions can actually recover and resume previous functions, as well as how intact regions are recruited to take on tasks once mediated by the damaged region. Evidence-based rehabilitation approaches are reviewed for a range of impairments and clinical populations, including both children and adults.

Book Online and Offline Modulators of Motor Learning

Download or read book Online and Offline Modulators of Motor Learning written by Shahabeddin Vahdat and published by Frontiers Media SA. This book was released on 2017-05-25 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both the acquisition of new and the modification of previously acquired motor skills are necessary to achieve optimal levels of motor performance in everyday functioning as well as to attain expert performance levels that are evident in sports and arts. A multitude of factors have been shown to influence the various stages of the learning process, from the acquisition (i.e., motor memory encoding) to the consolidation and subsequent retention of a skill. These factors, or modulators, can affect learning through online processes taking place during practice of a new motor skill or through offline processes occurring in the absence of task performance (i.e., after training sessions). Although much of the recent research from various disciplines has placed an increased emphasis on identifying factors that can influence the motor learning process, we lack an integrated understanding of online and offline determinants of motor skill behaviours. Potential motor learning modulators include, but are certainly not limited to, stress, anxiety, attention, executive functioning, social interaction, stimulus-response mapping, training schedule/regimen, learning environment, vigilance/consciousness states including sleep, wakefulness or meditation, brain stimulation, interference as well as resting state brain connectivity. Pathological and non-pathological (i.e., development or aging) changes in the brain can also be conceptualized as potential modulators. The aim of this Research Topic is to bridge research from the cognitive, sensory, motor and psychological domains using various behavioural paradigms and neuroimaging techniques in order to provide a comprehensive view of the online and offline modulators of motor learning, and how they interact to influence motor performance. Critically, the overarching goal is to gain a better understanding of how motor behaviour can be optimized. We believe that merging research from diverse neuroscientific communities would contribute to fulfilling this goal and potentially highlight possible shared neurophysiological mechanisms influencing motor learning.

Book Promoting Motor Learning

Download or read book Promoting Motor Learning written by Robert Mackenzie and published by . This book was released on 2013 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Exercise and Cognitive Function

Download or read book Exercise and Cognitive Function written by Terry McMorris and published by John Wiley & Sons. This book was released on 2009-04-01 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book The Effects of an Acute Bout of Moderate Intensity Exercise on Cognitive Performance

Download or read book The Effects of an Acute Bout of Moderate Intensity Exercise on Cognitive Performance written by Molly C. Casebere and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The purpose of this study was to provide a real-world test of the relationship between the performance of an acute bout of moderate physical activity (walking) during the lunch hour and subsequent cognitive performance in the workplace. Participants were generally healthy, middle aged (mean age = 45.23), white-collar workers. Participants were randomly assigned to walk or not walk on their lunch break and then complete a battery of computer-based cognitive tests later in the afternoon. On a second day, the same procedures were repeated with the walkers now being the non-walkers and vice versa. Within subjects analysis revealed significant differences, p

Book Effects of an Acute Bout of Aerobic Exercise on Cardiovascular and Subjective Responses During Subsequent Cognitive Work and Stress

Download or read book Effects of an Acute Bout of Aerobic Exercise on Cardiovascular and Subjective Responses During Subsequent Cognitive Work and Stress written by Janine L. Dyck and published by . This book was released on 1988 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Investigating the Attentional Effects of Acute Aerobic Exercise and Crossmodal Processing on the Modulation of Frontoparietal Interactions

Download or read book Investigating the Attentional Effects of Acute Aerobic Exercise and Crossmodal Processing on the Modulation of Frontoparietal Interactions written by Christina Popovich and published by . This book was released on 2015 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The sense of touch commences when afferent sensory signals from the periphery ascend via the spinal cord to the cortex. At the cortical level, incoming peripheral signals are susceptible to neuronal modulation at the primary somatosensory cortex; the principle region responsible for tactile perception. This modulation is largely influenced by two attentional mechanisms: 1) Bottom-up attention whereby salient stimuli automatically capture attention; and/or, 2) Top-down or selective attention, whereby relevant sensory signals are voluntarily selected for in-depth cognitive processing, while irrelevant signals are ignored. Selective attention to both task-relevant stimuli as well as to crossmodal sensory interactions can facilitate neuronal responses at very early stages in modality-specific sensory regions. Efforts to understand the mechanisms underlying top-down attention suggest that the prefrontal cortex (PFC) has a critical role in the modulation of modality-specific regions by gating or suppressing irrelevant sensory information. Recent evidence suggests that an acute bout of moderate intensity aerobic exercise upregulates PFC excitability thereby facilitating cognitive tasks requiring top-down attentional control, particularly in older populations. However, the specific contribution of each sensory system during attentional processing and, importantly, how these interact with the required behavioural motor goals remains unclear. It is also unclear whether acute bouts of moderate intensity aerobic exercise modulate cortical regions downstream from the PFC, such as the somatosensory cortex. This thesis will aim to address these questions in order to gain a better understanding of the neural mechanisms underlying somatosensory processing, and whether aerobic exercise can be used as a plausible intervention strategy for sensory processing impairments that are often associated with normal aging.

Book Physical Exercise for Human Health

Download or read book Physical Exercise for Human Health written by Junjie Xiao and published by Springer Nature. This book was released on 2020-04-27 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shares the latest findings on exercise and its benefits in preventing and ameliorating numerous diseases that are of worldwide concern. Addressing the role of exercise training as an effective method for the prevention and treatment of various disease, the book is divided into eleven parts: 1) An Overview of the Beneficial Effects of Exercise on Health and Performance, 2) The Physiological Responses to Exercise, 3) Exercise and Metabolic Diseases, 4) Exercise and Cardiovascular Diseases, 5) Exercise and Musculoskeletal Diseases, 6) Exercise and Neurological and Psychiatric Diseases, 7) Exercise and the Respiration System, 8) Exercise and Immunity, 9) Exercise and HIV/AIDS, 10) Exercise and Neuropsychiatric Disorders, and 11) Future Prospects. Given its scope, the book will be particularly useful for researchers and students in the fields of physical therapy, physiology, medicine, genetics and cell biology, as well as researchers and physicians with a range of medical specialties.

Book Effects of Acute Exercise on Long term Memory

Download or read book Effects of Acute Exercise on Long term Memory written by Jeffrey D. Labban and published by . This book was released on 2007 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: "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

Book Brain Plasticity and Behavior

Download or read book Brain Plasticity and Behavior written by Bryan Kolb and published by Psychology Press. This book was released on 1995 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: First Published in 1995. Routledge is an imprint of Taylor & Francis, an informa company.