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Your Skeletal System's Response to Exercise

by
author image Miguel Cavazos
Miguel Cavazos is a photographer and fitness trainer in Los Angeles who began writing in 2006. He has contributed health, fitness and nutrition articles to various online publications, previously editing stand-up comedy and writing script coverage as a celebrity assistant. Cavazos holds a Bachelor of Arts in philosophy and political science from Texas Christian University.
Your Skeletal System's Response to Exercise
A group of women and men in a spin class. Photo Credit Catherine Yeulet/iStock/Getty Images

Your skeletal system has 206 bones that work with your muscles to allow movement. This system gives your body its shape and form. Physically active people generally have higher bone density than inactive people. Your skeletal system responds to exercise like your muscles. Higher levels of physical activity may reduce your risk of age-related bone loss. Regular exercise may provide lifelong benefits, particularly for skeletal systems in children, adolescents and young adults.

Bone Mass

Your skeletal system stores 99 percent of the calcium in your body, and calcium is the most abundant mineral in your body. Your skeletal system responds to exercise by taking in more calcium. Osteoblasts are cells that bring calcium into bones. Osteoblasts slow down and transport less calcium from your blood to your bones during inactivity, but exercise has the opposite effect and increases osteoblastic activity. Exercise that requires force through a particular bone strengthens that bone. Exercise helps you increase the density and strength of your bones, especially exercising regularly during the first three decades of life.

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Weight Bearing

Your skeletal system responds to weight-bearing exercise more than nonweight-bearing exercise. Weight-bearing exercises include activities such as weightlifting, jogging, climbing stairs, tennis, and dancing. These exercises force your skeletal system to work against gravity. Nonweight-bearing exercises include swimming and cycling. Your skeletal system gradually loses bone mass after age 30. Therefore, performing more weight-bearing exercise before age 30 increases the amount of bone you can loose and may reduce your risk of developing problems with low bone density. Weigh-bearing exercise after age 30 may help you maintain bone density.

Overtraining

Exercising too much may trigger negative responses from your skeletal system. You can lose bone density if you exercise too much and do not take enough calcium and vitamin D. Fluoride, iron, manganese and phosphorus are also important for healthy bones. Young women who exercise too much may not experience menstrual periods. This may indicate low estrogen levels, which may lead to brittle bones and osteoporosis. Weightlifting is generally healthy for young skeletal systems, but intense and heavy weightlifting, such as one-rep max workouts, may lead to injuries that damage growth plates in children and adolescents. Growth plate injuries can stunt normal growth.

Soft Tissue Support

Your skeletal system may become less susceptible to bone fractures in response to exercise, because exercise strengthens soft tissues that protect your bones. Physical activity, such as running, playing sports and plyometrics, increases your muscular coordination and balance. This reduces your risk of skeletal injury from falling, because your muscles adapt better to sudden obstacles and unstable surfaces. Muscle-building exercises reduce your risk of skeletal injury by increasing the size and strength of tissues that protect your bones.

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References

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