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Biomechanical walking pattern changes in the fit and healthy elderly.
D A Winter1, A E Patla, J S Frank
1Department of Kinesiology, University of Waterloo, Ontario, Canada.
Physical Therapy
|June 1, 1990
Summary
Healthy older adults exhibit safer walking patterns with a shorter step length and longer support time. However, reduced dynamic balance indicates potential age-related declines in stability.
Area of Science:
- Biomechanics
- Gerontology
- Human Movement Science
Background:
- Gait analysis is crucial for understanding age-related changes in mobility.
- Previous research often overlooks healthy, active elderly individuals, potentially skewing data.
Purpose of the Study:
- To compare the biomechanical walking patterns of healthy, active elderly individuals with those of young adults.
- To identify age-related adaptations in gait and balance.
Main Methods:
- Descriptive study analyzing kinematic and kinetic data from 15 healthy elderly subjects.
- Utilized a video digitizing system and force platform for data collection.
- Applied inverse dynamics modeling to assess joint moments and power generation/absorption.
Main Results:
- Elderly subjects maintained similar cadence but had shorter step lengths and increased double-support time.
- A more flat-footed landing and decreased push-off power were observed in the elderly.
- The "index of dynamic balance" was reduced in older adults, suggesting impaired balance control efficiency.
Conclusions:
- Gait differences in healthy elderly individuals represent adaptations for increased stability and safety.
- Reduced dynamic balance indicates a potential decline in the efficiency of the balance control system with age.
- A distinct gait database for the elderly is necessary to accurately identify falling disorders.