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Overexertion
Exertion is the physical or perceived use of energy.Newton's Third Law, Elert, Glenn. “Forces.” ''Viscosity – The Physics Hypertextbook'', physics.info/newton-first/. Exertion traditionally connotes a strenuous or costly ''effort'', resulting in generation of force, initiation of motion, or in the performance of work. It often relates to muscular activity and can be quantified, empirically and by measurable metabolic response. Physical In physics, ''exertion'' is the expenditure of energy against, or inductive of, inertia as described by Isaac Newton's third law of motion. In physics, force exerted equivocates work done. The ability to do work can be either positive or negative depending on the direction of exertion relative to gravity. For example, a force exerted upwards, like lifting an object, creates positive work done on that object. Exertion often results in force generated, a contributing dynamic of general motion. In mechanics it describes the use of force agains ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Man Lifting A Heavy Barbell
A man is an adult male human. Before adulthood, a male child or adolescent is referred to as a boy. Like most other male mammals, a man's genome usually inherits an X chromosome, X chromosome from the mother and a Y chromosome, Y chromosome from the father. Sex differentiation of the male fetus is governed by the SRY gene on the Y chromosome. During puberty, hormones which stimulate androgen production result in the development of secondary sexual characteristics that result in even more differences between the sexes. These include greater muscle mass, greater height, the growth of facial hair and a lower body fat composition. Male anatomy is distinguished from female anatomy by the male reproductive system, which includes the testicles, sperm ducts, prostate gland and epididymides, and human penis, penis. Secondary sex characteristics include a narrower pelvis and hips, and smaller breasts and Nipple, nipples. Throughout human history, traditional gender roles hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biomechanics
Biomechanics is the study of the structure, function and motion of the mechanical aspects of biological systems, at any level from whole organisms to Organ (anatomy), organs, Cell (biology), cells and cell organelles, using the methods of mechanics. Biomechanics is a branch of biophysics. Etymology The word "biomechanics" (1899) and the related "biomechanical" (1856) come from the Ancient Greek βίος ''bios'' "life" and μηχανική, ''mēchanikē'' "mechanics", to refer to the study of the mechanical principles of living organisms, particularly their movement and structure. Subfields Biofluid mechanics Biological fluid mechanics, or biofluid mechanics, is the study of both gas and liquid fluid flows in or around biological organisms. An often studied liquid biofluid problem is that of blood flow in the human cardiovascular system. Under certain mathematical circumstances, blood flow can be modeled by the Navier–Stokes equations. ''In vivo'' whole blood is assum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Will (sociology)
''Gemeinschaft'' () and ''Gesellschaft'' (), generally translated as "community and society", are categories which were used by the German sociologist Ferdinand Tönnies in order to categorize social relationships into two types. The Gesellschaft is associated with modern society and rational self-interest, which weakens the traditional bonds of family and local community that typify the Gemeinschaft. Max Weber, a founding figure in sociology, also wrote extensively about the relationship between ''Gemeinschaft'' and ''Gesellschaft''. Weber wrote in direct response to Tönnies. ''Gemeinschaft''–''Gesellschaft'' dichotomy According to the dichotomy, social ties can be categorized, on one hand, as belonging to personal social interactions, and the roles, values, and beliefs based on such interactions (''Gemeinschaft'', German, commonly translated as "community"), or on the other hand as belonging to indirect interactions, impersonal roles, formal values, and beliefs based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ferdinand Tönnies
Ferdinand Tönnies (; 26 July 1855 – 8 April 1936) was a German sociologist, economist, and philosopher. He was a significant contributor to sociological theory and field studies, best known for distinguishing between two types of social groups, Gemeinschaft and Gesellschaft (community and society). He co-founded the German Sociological Association together with Max Weber and Georg Simmel and many other founders. He was president of the society from 1909 to 1933, after which he was ousted for having criticized the Nazis. Tönnies was regarded as the first proper German sociologist and published over 900 works, contributing to many areas of sociology and philosophy. Tönnies, Max Weber, and Georg Simmel are considered the founding fathers of classical German sociology. Though there has been a resurgence of interest in Weber and Simmel, Tönnies has not drawn as much attention. Biography Early life Ferdinand Tönnies was born on 26 July 1855 on the Haubarg "De Reap", O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decision Theory
Decision theory or the theory of rational choice is a branch of probability theory, probability, economics, and analytic philosophy that uses expected utility and probabilities, probability to model how individuals would behave Rationality, rationally under uncertainty. It differs from the Cognitive science, cognitive and Behavioural sciences, behavioral sciences in that it is mainly Prescriptive economics, prescriptive and concerned with identifying optimal decision, optimal decisions for a rational agent, rather than Descriptive economics, describing how people actually make decisions. Despite this, the field is important to the study of real human behavior by Social science, social scientists, as it lays the foundations to Mathematical model, mathematically model and analyze individuals in fields such as sociology, economics, criminology, cognitive science, moral philosophy and political science. History The roots of decision theory lie in probability theory, developed by Blai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volition (psychology)
Volition, also known as will or conation, is the cognitive process by which an individual decides on and commits to a particular course of action. It is defined as purposive striving and is one of the primary human psychological functions. Others include affect (feeling or emotion), motivation (goals and expectations), and cognition (thinking). Volitional processes can be applied consciously or they can be automatized as habits over time. Most modern conceptions of volition address it as a process of conscious action control which becomes automatized (e.g. see Heckhausen and Kuhl; Gollwitzer; Boekaerts and Corno). Overview Many researchers treat ''volition'' and '' willpower'' as scientific and colloquial terms (respectively) for the same process. When a person ''makes up their mind'' to do a thing, that state is termed 'immanent volition'. When we put forth any particular act of choice, that act is called an emanant, executive, or imperative volition. When an immanent or sett ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychological Inertia
Psychological inertia is the tendency to maintain the status quo (or default option) unless compelled by a psychological motive to intervene or reject this. Psychological inertia is similar to the status-quo bias but there is an important distinction in that psychological inertia involves inhibiting any action, whereas the status-quo bias involves avoiding any change which would be perceived as a loss. Research into psychological inertia is limited, particularly into its causes, but it has been seen to affect decision-making by causing individuals to automatically choose or prefer the default option, even if there is a more beneficial option available to them, unless motivated to reject this option. For example, psychological inertia may cause individuals to continue with their investments later than they should, despite information telling them otherwise, causing them to suffer greater losses than they would have if they had disinvested earlier. Psychological inertia has also s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cost
Cost is the value of money that has been used up to produce something or deliver a service, and hence is not available for use anymore. In business, the cost may be one of acquisition, in which case the amount of money expended to acquire it is counted as cost. In this case, money is the input that is gone in order to acquire the thing. This acquisition cost may be the sum of the cost of production as incurred by the original producer, and further costs of transaction as incurred by the acquirer over and above the price paid to the producer. Usually, the price also includes a mark-up for profit over the cost of production. More generalized in the field of economics Economics () is a behavioral science that studies the Production (economics), production, distribution (economics), distribution, and Consumption (economics), consumption of goods and services. Economics focuses on the behaviour and interac ..., cost is a metric that is totaling up as a result of a process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Energy
Energy () is the physical quantity, quantitative physical property, property that is transferred to a physical body, body or to a physical system, recognizable in the performance of Work (thermodynamics), work and in the form of heat and light. Energy is a Conservation law, conserved quantity—the law of conservation of energy states that energy can be Energy transformation, converted in form, but not created or destroyed. The unit of measurement for energy in the International System of Units (SI) is the joule (J). Forms of energy include the kinetic energy of a moving object, the potential energy stored by an object (for instance due to its position in a Classical field theory, field), the elastic energy stored in a solid object, chemical energy associated with chemical reactions, the radiant energy carried by electromagnetic radiation, the internal energy contained within a thermodynamic system, and rest energy associated with an object's rest mass. These are not mutual ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exercise
Exercise or workout is physical activity that enhances or maintains fitness and overall health. It is performed for various reasons, including weight loss or maintenance, to aid growth and improve strength, develop muscles and the cardiovascular system, prevent injuries, hone athletic skills, improve health, or simply for enjoyment. Many people choose to exercise outdoors where they can congregate in groups, socialize, and improve well-being as well as mental health. In terms of health benefits, usually, 150 minutes of moderate-intensity exercise per week is recommended for reducing the risk of health problems. At the same time, even doing a small amount of exercise is healthier than doing none. Only doing an hour and a quarter (11 minutes/day) of exercise could reduce the risk of early death, cardiovascular disease, stroke, and cancer. Classification Physical exercises are generally grouped into three types, depending on the overall effect they have on the hum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sport Psychology
Sport psychology is defined as the study of the psychological basis, processes, and effects of sport. One definition of sport sees it as "any physical activity for the purposes of competition, recreation, education or health". Sport psychology is recognized as an interdisciplinary science that draws on knowledge from many related fields including biomechanics, physiology, kinesiology and psychology. It involves the study of how psychological factors affect performance and how participation in sport and exercise affects psychological, social, and physical factors. Sport psychologists may teach cognitive and behavioral strategies to athletes in order to improve their experience and performance in sports. A sport psychologist does not focus solely on athletes. This type of professional also helps non-athletes and everyday exercisers learn how to enjoy sports and to stick to an exercise program. A psychologist is someone that helps with the mental and emotional aspects of someone's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cortisol
Cortisol is a steroid hormone in the glucocorticoid class of hormones and a stress hormone. When used as medication, it is known as hydrocortisone. Cortisol is produced in many animals, mainly by the ''zona fasciculata'' of the adrenal cortex in an adrenal gland. In other tissues, it is produced in lower quantities. By a Circadian rhythm, diurnal cycle, cortisol is released and increases in response to Stress (biology), stress and a low Blood sugar, blood-glucose concentration. It functions to increase blood sugar through gluconeogenesis, suppress the immune system, and aid in the metabolism of calories. It also decreases bone formation. These stated functions are carried out by cortisol binding to glucocorticoid or mineralocorticoid receptors inside a cell, which then bind to DNA to affect gene expression. Health effects Metabolic response Metabolism of glucose Cortisol plays a crucial role in regulating glucose metabolism and promotes gluconeogenesis (glucose synthes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
