Cardiovascular Responses to Physical Stressors in Normotensive and Exercise Hypertensive Individuals PDF Download
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Author: Darren A. Johnson
Publisher:
ISBN:
Category : Exercise
Languages : en
Pages : 0
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Book Description
This study compared the cardiovascular responses to the PWC 140, cold pressor test (CPT), and isometric hand grip (IHG), to evaluate the consistency in the blood pressure response among these physical stressors. Eighteen resting normotensive males were classified as either normotensive at exercise or exercise hypertensive on the basis of their blood pressure response to the first stage of the Canadian Aerobic Fitness Test (CAFT) for their age group. Subjects were administered a 6-min PWC 140 bicycle ergometer test, a 120 sec CPT (forearm and hand immersion), and a 120 sec IHG at 30% MVC. Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), stroke volume (SV), cardiac output (CO), and ejection fraction (EF) were recorded every 5 seconds during a one min resting period, during exercise, and for 3 min post exercise using a Finapress 2000 BP monitor and BoMed bioimpedance cardiac monitor. The results of this study indicate that: (1) there were no significant differences between the two groups for the cardiovascular responses to the PWC 140, IHG, and CPT with the exception of a greater CO and SV in normotensives on the PWC 140, and a higher HR in exercise hypertensives on the CPT; (2) the exercise hypertensives had a greater rate of increase in SBP and DBP than the normotensives over the first 90 seconds of the CPT; (3) there was no consistent pattern in the individual responses to the CAFT, CPT, and IHG with respect to $\Delta$SBP. It was concluded that within the context of this study, the blood pressure responses to dynamic exercise, isometric exercise, and cold stress were not consistent among the subjects and tests.
Author: Darren A. Johnson
Publisher:
ISBN:
Category : Exercise
Languages : en
Pages : 0
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Book Description
This study compared the cardiovascular responses to the PWC 140, cold pressor test (CPT), and isometric hand grip (IHG), to evaluate the consistency in the blood pressure response among these physical stressors. Eighteen resting normotensive males were classified as either normotensive at exercise or exercise hypertensive on the basis of their blood pressure response to the first stage of the Canadian Aerobic Fitness Test (CAFT) for their age group. Subjects were administered a 6-min PWC 140 bicycle ergometer test, a 120 sec CPT (forearm and hand immersion), and a 120 sec IHG at 30% MVC. Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), heart rate (HR), stroke volume (SV), cardiac output (CO), and ejection fraction (EF) were recorded every 5 seconds during a one min resting period, during exercise, and for 3 min post exercise using a Finapress 2000 BP monitor and BoMed bioimpedance cardiac monitor. The results of this study indicate that: (1) there were no significant differences between the two groups for the cardiovascular responses to the PWC 140, IHG, and CPT with the exception of a greater CO and SV in normotensives on the PWC 140, and a higher HR in exercise hypertensives on the CPT; (2) the exercise hypertensives had a greater rate of increase in SBP and DBP than the normotensives over the first 90 seconds of the CPT; (3) there was no consistent pattern in the individual responses to the CAFT, CPT, and IHG with respect to $\Delta$SBP. It was concluded that within the context of this study, the blood pressure responses to dynamic exercise, isometric exercise, and cold stress were not consistent among the subjects and tests.
Author: Arto J Hautala
Publisher: Frontiers Media SA
ISBN: 2889194639
Category : Physiology
Languages : en
Pages : 96
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Book Description
Cardiovascular responses to physical and/ or mental stressors has been a topic of great interest for some time. For example, significant changes of cardiovascular control and reactivity have been highlighted as important mechanisms for the protective effect of exercise as a simple and effective, non medical therapy for many pathologies. However, despite the great number of studies performed to date (e.g. >54,000 entries in Pubmed for “cardiovascular stress”), important questions of the role stress has on cardiovascular function still remain. For instance, What factors account for the different cardiovascular responses between mental and physical stressors? How do these different components of the cardiovascular system interact during stress? Which cardiovascular responses to stress are the most important for identifying normal, depressed, and enhanced cardiovascular function? Can these stress-induced responses assist with patient diagnosis and prognosis? What impact does physical fitness have on the relationship between cardiovascular function and health? The current topic examined our current understanding of cardiovascular responses to stress and the significant role that physical fitness has on these responses for improved function and health. Manuscripts focusing on heart rate variability (HRV), heart rate recovery, and other novel cardiovascular assessments were especially encouraged.
Author: J. Rick Turner
Publisher: Springer Science & Business Media
ISBN: 1489906975
Category : Psychology
Languages : en
Pages : 430
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Book Description
Demonstrating that the magnitude and pattern of cardiovascular response to stress varies markedly between individuals, this work discusses the mechanisms by which the cardiovascular system is mobilized during stress, the determinants of individual differences, and the pathophysiological processes by which responses to stress may lead to cardiovascular disease. Behavioral scientists from a variety of disciplines will find the work pertinent to their research.
Author: J. Rick Turner
Publisher: Springer Science & Business Media
ISBN: 1475795793
Category : Psychology
Languages : en
Pages : 241
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Book Description
This book is an articulate, concise, contemporary introduction to the study of important variables underlying cardiovascular reactivity. Its strength is in the combination of a scholarly but nonpedantic approach to cardiovascular psychophysiology and a solid understanding of be havioral medicine approaches to the study of hypertension. The topics covered are central to the study of relationships between behavior and cardiovascular reactivity; the list of suggested readings at the end of each chapter provides excellent guidance for more detailed study of specific issues. It has now been more than a dozen years since Plenum Press published Paul Obrist's seminal monograph Cardiovascular Psycho physiology. The volume had a major impact in relating cardiovascular regulation to behaving individuals and in developing thoughtful hy potheses concerning such factors as they might pertain to hypertension. The impact of that work extended across scientific disciplines as well as aross continents. At the time the Obrist book was published, a young psychologist, J. Rick Turner, was completing his Ph. D. thesis in psychol ogy at the University of Birmingham, England, on heart rate reactions to psychological challenge. After continued collaboration for the next several years with his former Ph. D. mentor, Douglas Carroll, Turner joined the Obrist laboratory at the University of North Carolina. Al though Obrist unfortunately died during Turner's tenure in the labora tory, collaboration continued with Kathleen Light and Andrew Sher wood. The enlightened legacy of the North Carolina laboratory can clearly be seen in this text.
Author: Gerald F. Fletcher
Publisher: Wiley-Blackwell
ISBN: 9780879935597
Category : Medical
Languages : en
Pages : 446
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Book Description
The third edition of this popular and successful text has been fully revised and updated to take account of recent advances in the field, particularly in the physiology and pathophysiology of many disease processes. The text retains the original format of relevant physiology, test selection and test interpretation by case example. Essential aspects of paediatric chemical pathology, inborn errors of metabolism, reproductive endocrinology, tumours and toxicology are now included. As chemical pathology is receiving specific attention in medical courses, this text has been adapted to present this information in an understandable form, making it suitable for medical undergraduates and for medical and science postgraduates studying for exams of Colleges of Pathology and professional associations."
Author: Hubert Vaudry
Publisher: Springer Science & Business Media
ISBN: 9781402073069
Category : Medical
Languages : en
Pages : 432
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Book Description
Pituitary Adenylate Cyclase-Activating Polypeptide is the first volume to be written on the neuropeptide PACAP. It covers all domains of PACAP from molecular and cellular aspects to physiological activities and promises for new therapeutic strategies. Pituitary Adenylate Cyclase-Activating Polypeptide is the twentieth volume published in the Endocrine Updates book series under the Series Editorship of Shlomo Melmed, MD.
Author: Michitoshi Inoue
Publisher: Springer Science & Business Media
ISBN: 4431683674
Category : Medical
Languages : en
Pages : 330
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Book Description
Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.
Author: American College of Sports Medicine
Publisher: Lippincott Williams & Wilkins
ISBN: 1609136055
Category : Medical
Languages : en
Pages : 480
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Book Description
The flagship title of the certification suite from the American College of Sports Medicine, ACSM's Guidelines for Exercise Testing and Prescription is a handbook that delivers scientifically based standards on exercise testing and prescription to the certification candidate, the professional, and the student. The 9th edition focuses on evidence-based recommendations that reflect the latest research and clinical information. This manual is an essential resource for any health/fitness and clinical exercise professional, physician, nurse, physician assistant, physical and occupational therapist, dietician, and health care administrator. This manual give succinct summaries of recommended procedures for exercise testing and exercise prescription in healthy and diseased patients.
Author: Sheri R. Colberg
Publisher: American Diabetes Association
ISBN: 158040507X
Category : Medical
Languages : en
Pages : 554
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Book Description
Physical movement has a positive effect on physical fitness, morbidity, and mortality in individuals with diabetes. Although exercise has long been considered a cornerstone of diabetes management, many health care providers fail to prescribe it. In addition, many fitness professionals may be unaware of the complexities of including physical activity in the management of diabetes. Giving patients or clients a full exercise prescription that take other chronic conditions commonly accompanying diabetes into account may be too time-consuming for or beyond the expertise of many health care and fitness professionals. The purpose of this book is to cover the recommended types and quantities of physical activities that can and should be undertaken by all individuals with any type of diabetes, along with precautions related to medication use and diabetes-related health complications. Medications used to control diabetes should augment lifestyle improvements like increased daily physical activity rather than replace them. Up until now, professional books with exercise information and prescriptions were not timely or interactive enough to easily provide busy professionals with access to the latest recommendations for each unique patient. However, simply instructing patients to “exercise more” is frequently not motivating or informative enough to get them regularly or safely active. This book is changing all that with its up-to-date and easy-to-prescribe exercise and physical activity recommendations and relevant case studies. Read and learn to quickly prescribe effective and appropriate exercise to everyone.
Author: N. A. Mark Estes
Publisher: Wiley-Blackwell
ISBN: 9780879936914
Category : Medical
Languages : en
Pages : 600
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Book Description
The unexpected death of an athlete during exercise is a tragic irony - albeit with a history dating back to Pheldippides, who collapsed after his original Marathon run. We are more apt to consider vigorous exercise as a protective measure against cardiovascular events and not as a triggering mechanism for them. The relative rarity of such episodes makes the screening of those at risk even more of a challenge. This challenge is well met in this unique text, the first to deal specifically, authoritatively, and comprehensively with the issues of prediction and prevention of sudden cardiac death in the athlete. Many of the underlying cardiovascular diseases that put athletes at risk are identified and explained, including: hypertrophic cardiomyopathy arrhythmogenic right venticular dysplasia Wolff-Parkinson-White Syndrome anomalous origin of the coronary arteries inherited long QT syndromes The screening guidelines are of particular value, as are the recommendations regarding the participation of athletes with cardiovascular disease. Beyond its clinical scope, the editors have incorporated current information in epidemiology, cardiovascular pathophysiology, and the many vexing legal and ethical issues. With its in-depth, multi-faceted approach and prominent contributors, Sudden Cardiac Death in the Athlete is sure to be a much welcomed reference for sports medicine and team physicians, athletic directors and trainers, family practitioners, pediatricians, and cardiologists.
