Calcium is an important mineral that not only helps the integrity of bone it also is important for muscle contractions. Calcium is stored in bone and in the sarcoplasmic reticulum of a muscle cell. When an action potential fires and ACH is released the sarcoplasmic reticulum receives a signal to release calcium. This causes a cascade of events. Calcium is attracted to troponin unlocking tropomyosin from actin. This frees up the actin and myosin fillaments to engage in contraction. Calcium returns to the SR and the contraction is turned off. Low levels of calcium in the bones will ultimately effect muscle contractibility. Because there won't be enough calcium in the SR to initiate an actin myosin response. Dormant muscle cells will begin to lose their hormonal support and contractibility. It is important to establish motor unit recruitment to muscles on a regular basis to keep the neural connections active. Hormonal concentrations will decrease to adapt to atrophied muscle tissue. Calcium is an important component in driving the muscle contraction. Maintaining proper calcium levels is important to activating muscle tissue. As we age, especially women, we begin to lose calcium stored in bone. After menopause women lose calcium at a faster rate than before menopause. Osteoporosis and osteopenia can develop when calcium levels drop. in order to slow the onset of these diseases it has been proven that weight training can help re-establish osteoblasts migration in bone. Performing core lifting movements that activates a high concentration of neural activity and bone support. Squatting, Clean and Presses, Back Rows, Chest Presses, Shoulder Presses, Bicep Curls, Tricep Presses, Dead lifting are exercises that can help build bone. In order to activate a greater migration of osteoblasts the bone must be influenced with enough intensity for it to bend. When the weight is heavy enough it will cause the bone to bend slightly, causing the osteoblasts to migrate into the bone. Forming new bone. Using light weights under threshold is no good. The weight must be heavy enough to force new growth patterns.
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