In which population is resistance training particularly effective for increasing bone density and reducing fracture risk?

• A. Populations at risk for osteoporosis.
• B. Athletes with high bone density.
• C. Infants.
• D. People with no risk.

Answer: (A)

Mechanical loading from resistance training signals bone to form more tissue; bone adapts to the loads it experiences, a principle that lets bone density rise when you progressively challenge it. This response is especially valuable in people at risk for osteoporosis, where bone loss is a real concern. By applying substantial, controlled resistance over time, the bones most prone to fracture—like the hip, spine, and wrist—undergo increases in bone mineral density and get stronger in their geometry and microarchitecture. This not only raises the density numbers but translates into a lower likelihood of fractures, while also improving muscle strength, balance, and coordination that help prevent falls.

In populations with osteoporosis risk, the potential gains are greatest because the baseline risk is high and the relative impact of a robust loading stimulus on bone remodeling is substantial. Athletes with already high bone density can gain, but the incremental benefits for fracture risk reduction are smaller. Infants do experience bone growth with activity, but resistance training isn’t the primary or safest strategy for increasing bone density in that age, and those with no risk have a much lower absolute opportunity to reduce fracture risk.