The Endocrine System

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The endocrine system plays a significant role in the development of resistance training. The endocrine system integrates physiologic responses and plays an important role in maintaining homeostatic conditions at rest and during exercise. The type of resistance training workout used dictates the hormonal responses that cause increases in muscle mass. These tissue adaptations are influenced by changes in circulating hormonal concentrations after exercise. Long-term heavy resistance training causes adaptive responses that result in enhanced size, strength, and power of trained muscles. When the muscle is normally stimulated a motor unit initiates the muscle action and various signals (electrical, chemical, and hormonal) are sent from the brain
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