Events that provoke stress are known as stressors, this covers a wide range of situations. Stressors can be anything from a risk of physical danger to taking an in-class exam or even conducting a presentation at work. The human body responds to these stressors by activating the nervous system and specific hormones such as adrenaline and cortisol. The adrenal glands are signaled by the hypothalamus to produce more of these hormones and then to release them into the bloodstream. The hormones adrenaline and cortisol increase breathing rate, heart rate, blood pressure and metabolism. Blood vessels then dilate to allow more blood flow to reach large muscle groups; pupils also dilate to improve vision. The liver then releases stored glucose in order to increase the body's energy, thus sweat is produced to cool the body (Neil et al., 2007). All of the physical changes prepare one’s body to react quickly and effectively so that the pressure of the moment can be handled in a controlled way. This natural reaction is known as the stress response. The body's stress response can enhance a person's ability to perform well under pressure if it is functioning properly, however, the stress response can also be hazardous, causing serious problems if it overreacts or fails to reset itself properly. Many physiologists today also define stress as the body’s reaction to a stressor. Acute stressors affect an organism in the short term where as chronic stressors affect an organism over a longer period. Hans Hugo Bruno Selye, the Canadian endocrinologist researched the effects of stress and found that stress differs from other physical responses. He believed that stress is a stressful experience regardless if one receives good or bad news, and even whether the impulse is positive or negative. He defined negative stress as a distress and a positive stress as a eustress (Obama et al., 2007). In 1936, Selye researched a model on stress known as the General Adaptation Syndrome (GAS) where he experimented on rats by injecting them with extracts of various organs. The experiment of rats can show if the organism is severely damaged by acute nonspecific nocuous agents, examples include exposure to cold, production or transcision of the cord (spinal shock), surgical injury, excessive exercise, and intoxications of lethal drugs such as morphine, adrenaline, atropine, and formaldehyde (Selye, 1998). During the course of his research, Selye described the effects of stress in three key stages; these stages explain how the human body may become susceptible to infections and diseases.
To a great extent, stress can be a helpful response, especially for prehistoric humans. During this era, our species needed to react quickly to outside stimuli through a response of “fight or flight”. Through stress, certain hormones are released to help the individual resist the stressor, which may have meant running away from a natural predator. Thus, stress is a positive response that ensures the survival of the species. However, stress over a prolonged period of time causes exhaustion in the individual. Consequently, although stress can be helpful for individuals today, many often experience chronic stress, inflicting varying degrees of damage to their bodies.
In the 2008 National Geographic documentary Stress, Robert Sapolsky and other scientists explain the deadly consequences of prolonged stress. “If you’re a normal mammal,” Sapolsky says, “what stress is about is three minutes of screaming terror on the savannah, after which either it’s over with or you’re over with.” During those three minutes of terror the body responds to imminent danger by deploying stress hormones that stimulate the heart rate and blood pressure while inhibiting other functions, like digestion, growth and reproduction.
When faced with a dangerous situation, the common mind will flood with consternation, while the body changes its customary routine to adjust to this new development. One of the first things to change is the release of adrenaline. That adrenaline will cause the release of stored energy and move blood between the muscle groups (Conger 2). This allows the subject to move faster, work harder, and be stronger. All of these traits improve the individual to better survive the dilemma and find safety. Besides contributing to an increase in energy and power, the adrenal glands release cortisol too (Conger 1). The stress o...
The stress not only causes physiological, but also psychological problems. How does our body react when the stress comes? That will be “hypothalamic-pituitary-adrenal”, which is called ATP , the system regulate the stress. When facing stressors, our mouth becomes dry, as it is conserving fluids because our HPA axis sensing danger. It’s used to escape predators or fighting with beasts. But this system isn’t designed for today’s diverse stressors because in modern world, most people need to worry about mortgages, relationships and promotions more than the fight for food. If we continur to let our body work under these stressful conditions, it will break down the strain. This process is called ”allostatic load”. HPA axis also produce serious and long-lasting negative effects, like physical and psychological in our
Stress means different things to different people and stress effects people in different ways. Some people think stress is something that happens to them such as an injury or a promotion and others think that stress is what happens to our mind, body and behaviors in response to an event. While stress does involve events and how one responds to them these are not the critical factors, but our thoughts about the situation in which we are involved are the critical factors. Essentially, stress exists whenever homeostasis is disturbed or cannot be maintained (Stress and the Social System Course Guide, 2013). Homeostasis refers to the body's ability to keep the internal chemical and physical environments constant. As your body begins to react to stress several changes occur. These changes include increased heart rate, blood pressure and secretion of stimulatory hormones. Ones body prepares itself in stressful situations to either stand ground and fight or to flee from the situation. Walter Cannon called this stressful reaction the fight-or-flight response (Greenberg, 2012).
According to the American Institute of Stress, stress can be defined as an individual’s response, physical, mental or emotional, to an event that causes a demand for change (Selye, 1936). For athletes, that demand for change can be caused by an injury, which ultimately can have a significant impact on overall stress levels. While a physical injury can cause psychological stress, mental trauma can similarly affect an athlete physically. An athlete’s psychological stability has a great affect on an athlete’s susceptibility to pain and can alter the response to and recovery from an injury (Ahern, 1997).
Hans Selye’s General Adaptation Syndrome Model was created by Hans Selye in 1936. The Hans Selye’s General Adaptation Model states that when a stressful event occurs, it acts as a stressor causing one’s body to react to it through three stages if it is not removed. The three stages are alarm stage, resistance stage and exhaustion stage.
Each bodily physiological system has an individual established set point, or level of balance; however, some fluctuations in these levels are tolerated. The balance of any system can be, and regularly is disturbed by internal and/or external events of the mechanical, physical, chemical, biological, and/or social types. When this balance is disrupted, and involuntary mobilizations of biological processes are not able to re-establish it, an alarm reaction is activated (Schedlowski and Tewes, 1999). This reaction is referred to as a stress response, and the activating agent is the stressor (Selye, 1936).
The term ‘stress’ was generally thought to have been a concept created by Robert Hooke in the 17th century. He worked on the design of physical structures, such as bridges; his concept of stress came from how much pressure a structure could withstand. However, Lazarus (1993) pointed out that the term ‘stress’ has been used as far back as the 14th century, when it meant hardship or adversity. Back then it referred to the external stressor, such as the death of a spouse or financial worry; in the 20th century, there are many different schools of thought on this area. Hans Selye (1956), brought together the work of Cannon and Bernard and devised a comprehensive system of physiological stress; which he termed the ‘General Adaptation Syndrome’, and is a 3-stage process. He theorised that a certain level of stress called ‘eustress’ (Cox, 1978) could actually be beneficial to our overall performance. Later In 1976, Cox & Mackay devised another model called the ‘Transactional model’. This model takes into account the individual differences in the perception of the amount of stress experienced by the person. The main difference between these two models is that Selye’s model only accounts for the physiological side of stress, whereas Cox’s model takes into account both the physiological and psychological aspects of stress. Therefore, both models will have slight similarities and differences in their explanation for how stress occurs in individuals, which is the main focus of this essay.
Basically, we all know and understand that stress is bad for us. However, it is a natural state of the body, which is a good thing itself when present in small quantities....
Stress is “the body’s reaction to a change that requires a physical, mental, or emotional adjustment or response.” Many people realize that stress has a great impact on psychological health; however, they do not realize that physical health can be compromised as well. When the body is put under stress, physiological changes take place, such as increased heart rate or blood pressure. Many individuals do not know the extent to which stress can impact their bodies because they cannot see the changes taking place. If stress is prolonged, physical symptoms may begin to arise. These symptoms are real; however, they may or may not be due to some sort of physical disorder. Stress-induced anxiety may begin to form within the individual because of a constant fear that they have a serious medical condition. The cycle will repeat itself with potentially worsening symptoms.
During this response certain hormones are released, which speed the heart rate, slow digestion, and reroute blood flow, in order to elicit the desired response of fight or flight. The behavioral response to stress involves coping. “Coping refers to active efforts to master, reduce, or tolerate the demands created by stress” (Weiten & Lloyd, 2006, pp.... ... middle of paper ... ...
Stress is the combination of psychological, physiological, and behavioral reactions that people have in response to events that threaten or challenge them. Stress can be good or bad. Sometimes, stress is helpful, providing people with the extra energy or alertness they need. Stress could give a runner the edge he or she needs to persevere in a marathon, for example. This good kind of stress is called eustress. Unfortunately, stress is often not helpful and can even be harmful when not managed effectively. Stress could make a salesperson buckle under the pressure while trying to make a sales pitch at an important business meeting, for example. Moreover, stress can increase the risk of developing health problems, such as cardiovascular disease and anxiety disorders. This bad kind of stress is called distress, the kind of stress that people usually are referring to when they use the word stress.
There is something that everyone in this world tends to encounter; stress is that thing. For most people stress is an everyday thing. For others it can be just an occurrence from time to time. It can also affect our personal relationships without even us realizing that it was the main issue. Stress is “a person’s response to events that are threatening or challenging” (Feldman, 2010). Since there are many different type of stressors, they can be places in different categories. Stressors can be categorized as cataclysmic events, personal stressors, or even as background stressors (“daily hassles”). Though no matter what type of stress one has, there is always a way to cope to get through it and keep it from harming our relationships. Even if it is an everyday occurrence or a once in a while occurrence.
Stressors initiate a response within the organism and causes changes in the body, specifically responses in the body’s autonomic nervous system. The autonomic nervous system has two branches: the sympathetic and parasympathetic autonomic nervous system. The sympathetic autonomic nervous system helps the body deal with the stress it encounters, initiating the ‘fight or flight’ response. Once the threat has passed, the parasympathetic autonomic nervous system will take over, relaxing the body. There is a balance between these two in a healthy person. However, when someone stays on guard, using the sympathetic autonomic nervous system, all sorts of physical effects can