A recent paper in the Journal of Bone and Mineral Research found that increased bone mineral content (BMC) and bone mineral density (BMD) in childhood are positively associated with time spent doing high-impact physical activities (PA), even for those with a genetic risk of low bone mass in adulthood (1).
A concern over BMC and BMD generally arises in those over 60 years old, when low bone mass and osteoporosis can occur. However, the time of maximal bone mineral accretion occurs as puberty begins reaching a maximal rate in females at 12.5 and males at 14.1 years old (2). This period also corresponds to a time of maximal height velocity (2). Therefore, actions that can affect this process during this window of opportunity are important to consider; indeed, “the magnitude of peak bone mass attained in young adulthood is an important predictor of osteoporosis later in life” (2).