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← Human Body & HealthWhat distinguishes why bone mineral density increases with resistance exercise differently than with increased dietary calcium?
A)Enhanced osteoclast-mediated bone resorption
B)Reduced calcium absorption in intestines
C)Stimulation of osteoblast bone formation✓
D)Decreased vitamin D receptor expression
💡 Explanation
Resistance exercise increases bone mineral density due to the stimulation of osteoblast bone formation by mechanical stress, therefore building new bone. Dietary calcium increases bone density through mineral availability, rather than directly stimulating bone-forming cells, because it is an indirect hormonal mechanism.
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