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Muscle Fiber Types and Contraction
Muscles generate heat and force for movement, help us breathe, and keep our bodies upright. Skeletal muscle tissue is composed of two fibers, actin (thin fibers) and myosin (thick fibers). These two fibers give the muscle a striated appearance. In order for muscle to contract it must first be stimulated by nerves called motor neurons. A single motor neuron and the muscle fibers stimulated by it is called a motor unit. The recruiting motor units play a large part in the force of the muscle during contraction. The more motor units (muscle fibers) recruited, the stronger the force of contraction.
Fun Fitness Tips
Getting and staying in shape doesn’t have to be dull and boring! Try some of these fun fitness activities to make your workout time more enjoyable.
Learning About Body Core Conditioning
You rely on your body to get get out of bed, to lift your children, to perform your job and to take you places everyday. If you appreciate what your body does for you, you will provide it with nutritious food, hydrate with water and be sure to add some activity into your day.
Reshaping Your Body with Body Building Equipment
Strength training is one of the most rigorous training workouts that you can experience. All the work that you put forth during a body building workout benefits you in several different ways. By performing body building exercises just a few days each week you can increase your stamina and metabolism, and build lean, strong muscles.
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