How Your Bones Change With Exercise | Summary and Q&A

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October 7, 2022
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Institute of Human Anatomy
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How Your Bones Change With Exercise

TL;DR

Exercise plays a vital role in maintaining and increasing bone density by stimulating the bone tissue to adapt and modify.

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Questions & Answers

Q: How does exercise impact bone density?

Exercise stimulates the bone tissue to adapt and modify, leading to an increase in bone density. This is because bones are constantly changing and can modify their shape and architecture in response to exercise.

Q: What are the two types of bone tissue?

The two types of bone tissue are compact bone tissue and spongy bone tissue. Compact bone is the dense outer portion of all bones, while spongy bone is the inner part that looks like a sponge, consisting of trabeculae.

Q: What substances make up bone tissue?

Bone tissue is made up of two substances: hydroxyapatite, which is an inorganic substance that gives bone its compressive strength, and collagen, an organic substance that gives bone its tensile strength.

Q: How does exercise stimulate bone tissue?

Exercise stimulates bone tissue by exposing it to compressive and tensile forces. These forces cause the bone tissue to adapt and modify, leading to an increase in bone density and maintaining bone architecture.

Q: Are certain exercises more effective for increasing bone density?

Exercises that put both pushing (compressive) and pulling (tensile) forces on bones are effective for increasing bone density. Examples include activities like walking, running, jumping, and resistance training exercises like biceps curls or squats.

Q: Does running have a significant impact on bone density?

Yes, running can have a significant impact on bone density, especially in the lower limbs. However, other exercises that stimulate bones with compressive and tensile forces, such as resistance training, can also be effective in maintaining and increasing bone density.

Q: How does consistency play a role in maintaining bone density?

Consistently stimulating the bone tissue through exercise is crucial for maintaining and increasing bone density. Without consistency, the bone tissue may not adapt and modify to the same extent, potentially leading to a decrease in bone density over time.

Summary & Key Takeaways

  • Bone tissue is constantly changing and adapting to the stress placed upon it, making exercise essential for maintaining and increasing bone density.

  • Bones are made up of compact bone tissue on the outside and spongy bone tissue on the inside, with trabeculae (little beams) aligning in the direction of stress.

  • Activities and exercises that push and pull on bones, exposing them to compressive and tensile forces, help increase bone density and maintain bone architecture.

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