How Healthy Older Adults Enact Lateral Maneuvers While Walking

Area of Science:

• Biomechanics of human locomotion
• Gerontology and aging research
• Motor control and adaptation

Background:

• Walking involves complex maneuvers and balance maintenance, often involving a trade-off in foot placement strategies.
• Older adults may prioritize lateral balance, potentially limiting their ability to adapt stepping for maneuvers.

Purpose of the Study:

• To investigate how older adults adapt stepping for lateral lane-change maneuvers.
• To determine the influence of physical and perceived abilities on older adults' maneuver task performance.

Main Methods:

• Twenty young and 18 older adults walked on a treadmill in a virtual environment, performing lane changes upon cue.
• Quantified maneuver initiation, step width, lateral position, and stepping variability during lane changes.

Main Results:

• No age-related differences in maneuver initiation time or step/lateral positions were observed.
• Participants with greater physical ability reached their new path faster; lower perceived ability led to longer initiation times.
• Both young and older adults traded stability for maneuverability, with older adults showing pre-maneuver stepping adaptations.

Conclusions:

• Physical and perceived balance abilities, rather than age alone, significantly impact walking maneuver performance.
• Understanding the interplay of physical and perceived factors is crucial for improving walking performance in older adults.