Make Use of Your Hormones to Improve Exercise results...the Natural way! (Part 2)
February 22nd 2008 15:15
Effects of Exercise on Endocrine Secretions
Physical exercise is associated with marked metabolic changes and elicits a variety of neuroendocrine response (Scheen et al., 1998). These endocrine responses primarily aim to provide energy and growth needed by the body in order to keep up with the metabolic demands of a specific activity or exercise. And the endocrine system does this by controlling the metabolism of different energy sources like carbohydrates, fats, and proteins.
However the said responses would present themselves in varied forms depending on the type of activity or exercise an individual is performing-as for example, whether anaerobic or aerobic in nature. The reason for this is that different types of activities require different resources for energy and growth. And the fuel that energizes the body in anaerobic exercises is different from that which energizes the body in aerobic exercises.
Anaerobic Exercise versus Aerobic Exercise
If an individual is involved in sports or exercise with repeated short bouts such as baseball and sprint, the said individual is performing varieties of an intense exercise or anaerobic exercise. And intense exercise utilizes an energy system that refrains from using oxygen.
Ironically anaerobic or intense exercise is characterized by maximum oxygen consumption (VO2 max) of greater than 80 %. But despite of the huge accompanying increase in VO2, this type of exercise is almost entirely dependent on glucose and glycogen (coming from carbohydrates) for energy, which do not require reaction with oxygen for them to be utilized. The processes by which glucose and glycogen are transformed into energy are known as glycolysis and glycogenolysis, respectively.
In contrast, low- to- moderate intensity exercises like marathon or jogging, with 80 % or less VO2, greatly consume energy from system in which oxygen is of great importance. These low –to- moderate intensity exercises are therefore classified as aerobic.
In an aerobic type of exercise, glucose from carbohydrates are still used to produce energy, but not for long. Early glucose use is progressively supplanted by fatty acids use (from lypolysis) and at times glucose utilization from protein metabolism (known as gluconeogenesis). These energy sources necessitate oxygen reaction in order to produce the needed energy (Marliss and Vranic, 2002).
Endocrine Response Proper
Table 2 summarizes the major hormonal responses during exercise. It also describes the events that trigger the release of such hormones and the tissues in which they will be reacting with.
TO BE CONTINUED...
Physical exercise is associated with marked metabolic changes and elicits a variety of neuroendocrine response (Scheen et al., 1998). These endocrine responses primarily aim to provide energy and growth needed by the body in order to keep up with the metabolic demands of a specific activity or exercise. And the endocrine system does this by controlling the metabolism of different energy sources like carbohydrates, fats, and proteins.
However the said responses would present themselves in varied forms depending on the type of activity or exercise an individual is performing-as for example, whether anaerobic or aerobic in nature. The reason for this is that different types of activities require different resources for energy and growth. And the fuel that energizes the body in anaerobic exercises is different from that which energizes the body in aerobic exercises.
Anaerobic Exercise versus Aerobic Exercise
If an individual is involved in sports or exercise with repeated short bouts such as baseball and sprint, the said individual is performing varieties of an intense exercise or anaerobic exercise. And intense exercise utilizes an energy system that refrains from using oxygen.
Ironically anaerobic or intense exercise is characterized by maximum oxygen consumption (VO2 max) of greater than 80 %. But despite of the huge accompanying increase in VO2, this type of exercise is almost entirely dependent on glucose and glycogen (coming from carbohydrates) for energy, which do not require reaction with oxygen for them to be utilized. The processes by which glucose and glycogen are transformed into energy are known as glycolysis and glycogenolysis, respectively.
In contrast, low- to- moderate intensity exercises like marathon or jogging, with 80 % or less VO2, greatly consume energy from system in which oxygen is of great importance. These low –to- moderate intensity exercises are therefore classified as aerobic.
In an aerobic type of exercise, glucose from carbohydrates are still used to produce energy, but not for long. Early glucose use is progressively supplanted by fatty acids use (from lypolysis) and at times glucose utilization from protein metabolism (known as gluconeogenesis). These energy sources necessitate oxygen reaction in order to produce the needed energy (Marliss and Vranic, 2002).
Endocrine Response Proper
Table 2 summarizes the major hormonal responses during exercise. It also describes the events that trigger the release of such hormones and the tissues in which they will be reacting with.
TO BE CONTINUED...
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