The ability to dual-task walk and talk begins to decline around the age of 55. This decline is a result of changes to cognition and underlying brain function rather than due to physical changes associated with aging.
When learning how to coordinate a new movement, the nervous system first explores and evaluates many different coordinated patterns. With experience, the nervous system then adapts specific aspects of movements and simultaneously decreases pattern variability.
A new study found a causal link between brisk walking and telomere length. Researchers found that 10 minutes of brisk walking per day was associated with longer life expectancy, and brisk walkers have up to 20 years' greater life expectancy than those who walk slowly.
Gait variability in older adults could be a predictor of cognitive decline and Alzheimer's disease. Researchers found higher gait variability was associated with lower cognitive performance and an accurate predictor of Alzheimer's disease.