Step-by-step explanation:
Weight-bearing physical activity plays an important role in bone health across the lifespan. During
childhood, short bouts of high-impact activity augment bone-mass accrual and enhance bone’s structural
characteristics that contribute to overall bone strength. Along the age continuum, physical activity in
adulthood serves to maintain bone mass and strength and in later life, to diminish bone loss. While the
specific exercise prescription for bone strength in women and men is not known, a combination of
resistance training and impact exercise may offer the best strategy to promote bone health in older adults
and ultimately, reduce fracture risk. In this review we discuss the central role that physical activity plays
in promoting bone health across the lifespan. Specifically, we focus on the adaptations in bone structure
and strength to weight-bearing physical activity.