A study by Copeland, Consitt and Tremblay, reported that blood levels of estrogen, were significantly higher in women aged 19-69 years old after 40 minutes of either endurance or resistance exercise versus a control group that didn’t perform any workout. In spite of this blood levels of estrogen remain elevated for up to four-hours following an exercise session.
Thyroxine
This hormone is produced by the follicular cells of the thyroid gland. Its main purpose is to raise the body's metabolic rate. It also assists in weight loss because when it releases more calories are burnt. The additional benefit of thyroxine lies in its influence on physical development.
During the workout the thyroxine increases in the blood by nearly 30% and remains elevated for up to five hours afterward.You should do exercises at high intensity in order to achieve the maximum benefit. Thyroxine levels at rest are also increased through exercise. Epinephrine
Epinephrine is produced in the adrenal medulla and is considered as a neurotransmitter of the sympathetic nervous system. It serves to increase the amount of blood the heart pumps and direct the blood to where it is needed - the extremities. Epinephrine is one of the catecholamines, the other being norepinephrine, and both are synthesised from the amino acid tyrosine. Another benefit of epinephrine lies in stimulating the breakdown of glycogen in the liver and muscles and stored fat which is then used as fuel. Vasodilation in muscle and liver vasculatures can be also caused by the increased epinephrine release. Due to this the muscles receive more oxygenated blood which increases the ability to use these muscles while exercising. To increase epinephrine through exercise sessions your workout should be very intense. The amount of epinephrine released from the medulla is proportional to exercise intensity. Insulin
Insulin, produced in the islet cells of the pancreas is responsible for decreasing (regulating) blood levels of glucose and directing amino acids and fatty acids into cells. Most of cells in human body have insulin receptors, which consist of two alpha subunits and two beta subunits. They are linked by disulfide bonds, and bind the circulating insulin. Then other receptors can be activated by the cell, their purpose is to absorb glucose (sugar) from the blood stream into the cell. An insulin response ensues after you have taken your meals. An excessive insulin response leads to the accumulation of fat within cells, and, over time, those who frequently experience such responses can become overweight and their cells may develop a resistance to insulin (diabetes). This excess weight can be lost through daily aerobic and weight-training that should depend on the type of diabetes you have. In some cases the diabetes can be escaped however such people are still likely to become overweight with continual, excessive insulin responses.
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