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BY LORD AKERECONFI IntroductionTop
Abstract
Introduction
Methods
Results
Discussion
References
During exercise, cardiac output (CO) increases to provide the flow needed to serve the contracting skeletal muscles.1,2 Yet, by resetting the operating point for the arterial baroreceptors, vasodilatation is regulated to make blood pressure stable or to increase during exercise.3,4 Such a balance between CO and total peripheral resistance would be considered to be governed by an interplay between the autonomic influence on the heart, vasodilatory substances released from the working muscles, and sympathetic mediated vasoconstriction, including active skeletal muscles.2 The central nervous system (CNS),3,4 and especially neural feedback from contracting muscles,5-9 are important for the blood pressure response to exercise. Acceleration of the heart is governed by central command,10 whereas a blood-borne substance may contribute to the maintained elevation of heart rate (HR).11 Even in the absence of influence from CNS and neural feedback from working muscles, a tight coupling between CO and whole body oxygen uptake (O2) is maintained.12 We hypothesized that in the absence of not only motor control and neural feed back from contracting muscles5-9 but also sympathetic activity, at a level where it affects the heart, it would be difficult to maintain blood pressure during exercise. Individuals in whom neural transmission between the CNS and the contracting muscles was absent (spinal cord-injured individuals [SCI]) were studied at rest and during electrically induced contractions of their paralyzed legs after 1 year of similar electrically induced training.13 The results were compared with those established in able-bodied (control [CON]) individuals performing comparable voluntary exercise. By studying 2 groups of SCI, tetraplegic (TETRA) and paraplegic (PARA), the influence of sympathetic innervation to the heart on the cardiovascular responses to exercise was evaluated. Finally, to evaluate the influence of passive movement of the legs on cardiovascular variables while seated, the effect was compared with that established by contractile activity.
What else can I help you with?
What career studies the function of the human body during exercise?
A career that studies the function of the human body during exercise is exercise physiology. Exercise physiologists analyze how the body responds and adapts to physical activity and develop exercise programs to improve health and athletic performance. They study factors such as cardiovascular function, metabolism, and muscle performance during exercise.
What system of the human body is made up of blood?
cardiovascular cardiovascular
What effects does exercise have on the cardiovascular system?
Exercise uses up alot of energy which the cells derive from oxidizing glucose. Both glucose and oxygen have to be delivered by the blood, this means that the heart has to work harder to pump more blood around the body. This means that it has to beat faster in order to achieve a higher throughput. Heart rate for a human being is about 70 beats per min. During vigorous exercise heart rate can increase dramatically, this will result in increased blood flow.
What has the author Louis J Acierno written?
Louis J. Acierno has written: 'The human machine' -- subject(s): Pathological Physiology 'Comprehensive cardiac rehabilitation and prevention' -- subject(s): Cardiovascular Diseases, Cardiovascular Models, Diseases, Exercise Test, Exercise therapy, Exertion, Heart, Patients, Prevention, Prevention & control, Rehabilitation 'The history of cardiology' -- subject(s): Cardiology, History
The human body depends on what to cool itself?
The human body depends on perspiration to cool itself down. Perspiration occurs during vigorous exercise or during high intensity activities.
The human cardiovascular system does what?
It circulates blood throughout the body.
What system of the human body is made of blood and the heart?
The cardiovascular system.
What organ system is the human red blood cell in?
The cardiovascular system.
What is volume of oxygen maximum?
The maximum volume of oxygen that the human body can use and process in one minute is called the VO2 max. It is a measure of a person's aerobic fitness and represents the maximum capacity of the cardiovascular and respiratory systems to deliver and utilize oxygen during exercise. VO2 max is often used as an indicator of an individual's cardiorespiratory endurance.
What human body part is analogous to golgi apparatus?
The cardiovascular system (shipping).
What are the easy exercise for human growth?
the easiest exercise in this world is walking this is the most basic exercise which keeps your fit
What system of human body is made up of bloodblood vesslesand the heart?
cardiovascular system
