Weight-bearing exercise has what effect on bone density?

Weight-bearing exercise has what effect on bone density?

• A. Increases
• B. Has no effect
• C. Decreases
• D. Depends on age

Answer: (A)

Weight-bearing exercise increases bone density by creating mechanical stress on the bones, which signals bone remodeling and stimulates osteoblast activity to form new bone. Over time, the added load strengthens the bone and raises its mineral density, since the skeleton adapts to the loads it bears. While the amount of increase can vary with age and baseline bone health, the overall effect is a rise in bone density rather than no change or a decrease. Regular activities like walking, running, or resistance training reinforce this adaptive process and help maintain stronger bones.

Weight-bearing exercise increases bone density by creating mechanical stress on the bones, which signals bone remodeling and stimulates osteoblast activity to form new bone. Over time, the added load strengthens the bone and raises its mineral density, since the skeleton adapts to the loads it bears. While the amount of increase can vary with age and baseline bone health, the overall effect is a rise in bone density rather than no change or a decrease. Regular activities like walking, running, or resistance training reinforce this adaptive process and help maintain stronger bones.