During which stage of the General Adaptation Syndrome does the body physiologically
The human body is amazing. It constantly responds to its external environment to overcome and thrive. If you picked up a slightly heavy dumbbell to perform biceps curls, using a weight that you could only perform 6-12 repetitions of and continued to do so each day, your body would respond by increasing the muscle size and strength of the biceps to overcome that challenge until it is no longer challenging. Show
This is a simple example of muscular adaptation. An adaptation that fitness professionals rely on to help their clients get results. Although the biceps example simply explains the general concept of adaptation, it's important to understand the process of how the body responds to external stressors to see the desired adaptation. What is General Adaptation Syndrome?General Adaptation Syndrome, GAS for short, describes how the body responds to stress physiologically. Canadian physician Hans Seyle is credited with proposing this theory in 1936 to describe the process for how an organism adapts to various stressors.
What Are the Three Stages of GAS?The way that the body responds to stress, according to the GAS model, can be broken up into three stages: 1. Alarm Reaction Stage The benefit to this response is that over time when exposed to small doses of the same stressor, the body will adapt to overcome these challenges. The key to inducing a positive response is to use the principle of progressive overload, increasing the intensity or volume of exercise programs using a systematic and gradual approach. 2. Resistance Development Stage 3. Exhaustion Stage • Stress fractures Applying progressive overload and allowing for sufficient rest between sets and/or sessions as needed can help reduce the risk of entering this dangerous stage. The SAID PrincipleAnother commonly known adaptation principle is the SAID (specific adaptation to imposed demand) principle, also known as the principle of specificity. While the GAS model describes a general physiological response to stress stimulus, SAID is a principle stating that the body will adapt to the specific demands that are placed on it. Mechanical Specificity Neuromuscular Specificity Metabolic Specificity What GAS Has to do With Designing Workout ProgramsAs fitness professionals, we can use the GAS model to our advantage to help our clients see results without suffering the negative consequences of exhaustion. When it comes to programming, GAS helps us understand why it's important to periodize, or systematically cycle through, different phases of training. Using the GAS model, we can expect a client to experience some fatigue, joint stiffness, or DOMS after the first couple of sessions while they're in the alarm stage. After a few weeks of consistent training, the symptoms of the alarm stage should lessen, and the client should enter the resistance development stage and begin to see improvements in their performance. Their performance will continue to improve until their body adapts to what they're doing, and they (possibly) hit a plateau. Keeping the GAS model and the SAID principle in mind while programming will help you better develop a fitness plan for your client that helps them reach their goal effectively and efficiently. During which stage of the general adaptive syndrome does the body best physiologically adapt to a training load?Resistance Phase: the body adapts to the training stimulus and function returns to normal. Neurological and physiological adaptations are made by the body.
What stage of general adaptation syndrome causes a physiological response in the body that is most harmful to your overall wellbeing?Once you're in the exhaustion stage, prolonged stress raises the risk for chronic high blood pressure, stroke, heart disease, and depression. You also have a higher risk for infections and cancer due to a weaker immune system.
During what phase of the general adaptation syndrome has the physical and psychological energy used to fight the stressor been depleted?After an extended period of stress, the body goes into the final stage of GAS, known as the exhaustion stage. At this stage, the body has depleted its energy resources by continually trying but failing to recover from the initial alarm reaction stage.
In what stage of the general adaptation syndrome does the physiological factors heart rate blood pressure increase?Alarm Reaction Stage
Your brain responds by sending a message to the body releasing hormones called glucocorticoids and adrenaline; these are also known as your “fight or flight” hormones. During the alarm reaction stage, you'll also experience elevated blood pressure and heart rate levels.
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