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Functional Lower Extremity Strength Influences Stepping Strategy in Community-Dwelling Older Adults During Single and
Brandon M Peoples1, Kenneth D Harrison1, Keven G Santamaria-Guzman1
1School of Kinesiology, Auburn University, Auburn, AL, USA.
Research Square
|April 1, 2024
Summary
Older adults with normal strength adjust step time, but those with reduced strength lack a preferred stepping strategy. This research explores functional lower extremity strength
Area of Science:
- Gerontology
- Biomechanics
- Kinesiology
Background:
- Age-related decline in lower extremity strength impacts mobility and increases fall risk, exceeding muscle mass reduction.
- Mobility limitations in older adults are associated with diverse stepping strategies, but the link to functional strength is unclear.
Approach:
- Participants were equipped with inertial measurement units (IMUs) and walked over a pressurized walkway at a community event.
- The study analyzed the relationship between functional lower extremity strength and preferred stepping strategies in older adults during various walking tasks.
Key Points:
- Older adults with normal lower extremity strength demonstrated a preference for adjusting step time during walking.
- Individuals with reduced lower extremity strength did not exhibit a consistent or preferred stepping strategy.
- Functional strength significantly influences stepping strategy selection in community-dwelling older adults.
Conclusions:
- Understanding the influence of functional lower extremity strength on stepping strategy is crucial for addressing mobility limitations in aging populations.
- Findings can inform the diagnosis of gait deviations and the development of targeted interventions for mobility disability.
