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← Human Body & HealthWhy does increased mechanical loading from high-impact exercise initially weaken bone before strengthening via remodeling?
A)Increased osteoclast apoptosis occurs directly
B)Microdamage accumulation surpasses repair threshold✓
C)Inflammation immediately halts osteoblast function
D)Reduced blood supply inhibits nutrient delivery
💡 Explanation
Microdamage accumulates because the initial remodeling response lags behind the rate of damage induced by increased mechanical stress; therefore, bone weakens until osteoblasts can repair and reinforce the bone, rather than immediate osteoclast apoptosis or direct nutrient limitation.
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