Researchers describe how walking becomes harder as people age, focusing on changes in how the ankles move during each step. They report that older adults tend to stiffen their ankles more while walking, which alters the mechanics of movement and increases the effort required.

Across the accounts, the main trade-off is between stability and efficiency. Greater ankle co-contraction or stiffness helps older people maintain balance and may reduce the risk of falls, but it also limits forward motion. As a result, older adults often take shorter strides and walk more slowly, with quicker onset of fatigue.

Both outlets also point to potential interventions that address these functional changes. They emphasize regular physical activity, including balance and coordination work, and exercises that strengthen the lower legs or improve joint mobility. The overall framing is that targeting balance and strength may help preserve walking ability even as the body’s gait mechanics shift with age.