Do Differences in Spatiotemporal Gait Parameters Predict the Risk of Developing Depression in Later Life?

Area of Science:

• Gerontology
• Epidemiology
• Movement Science

Background:

• Growing interest in the link between gait disturbance and late-life depression.
• Need to clarify the longitudinal relationship in a representative older population.

Purpose of the Study:

• To investigate the longitudinal association between specific gait parameters and incident depression.
• To identify gait characteristics that may predict depression in older adults.

Main Methods:

• Longitudinal analysis of spatiotemporal gait parameters (gait speed, step length, step width, double support phase) from the Irish Longitudinal Study on Aging.
• Logistic regression models used to assess the relationship between baseline gait parameters and incident depression over 4 years in over 3600 participants aged 50+.

Main Results:

• Participants who developed depression had significantly slower gait speed and shorter step length at baseline.
• The slowest tertile of gait speed (OR=1.54) and shortest tertile of step length (OR=1.54) were associated with a significantly increased likelihood of incident depression.
• Step width and double support phase were not associated with depression.

Conclusions:

• Slower gait speed and shorter step length are significant indicators of incident depression in older adults.
• Gait parameters, particularly speed and step length, may serve as modifiable risk factors for late-life depression.
• Findings highlight the clinical significance of gait assessment in managing functional status and depression risk in aging.