Why walking becomes harder with age, according to science
New research reveals the body sacrifices movement efficiency for stability as we grow older.
1Aging and walking efficiency
New Australian research explains why walking slows down and becomes more tiring with age. Scientists from Flinders University and University of Canberra found the body prioritizes stability over movement efficiency as we age. Analyzing movement data from 107 healthy adults aged 26-86, the team detected small but significant age-related differences in how ankle and surrounding muscles manage each step.
2Safety-first walking strategy
The study reveals the nervous system adopts a 'safety-first' approach with aging. The co-contraction of opposing muscles around the ankle stiffens the joint, improving balance during foot contact. However, Dr. Cody Lindsay from Flinders University notes this comes at a cost: 'Joint stiffening makes walking safer but means muscles work harder while generating less forward movement.'
3Changing step dynamics with age
The research showed older participants generated less push-off power per step, resulting in shorter strides and slower walking speeds. Associate Professor Maarten Immink from Flinders University explains: 'The nervous system compensates for age-related changes by prioritizing stability over performance.' These findings point to broader changes in the body's movement management system.
4Fall risk and fatigue connection
Researchers note these changes increase fatigue and make long-distance walking more challenging while reducing recovery ability from slips - a key factor in falls among older adults. Immink adds: 'Even gradual changes can affect confidence and independence; people may notice quicker fatigue or less steadiness, especially on uneven surfaces.'
5Exercise recommendations for mobility
Scientists suggest exercise programs should emphasize balance and coordination alongside strength building. Dr. Lindsay recommends: 'Regular physical activity, balance exercises like tai chi, lower-leg strengthening, and coordination-challenging activities can make a difference.' Consistent small exercises may help maintain confidence, mobility and independence longer.
6Contributions to rehabilitation strategies
The findings aim to improve fall-prevention and rehabilitation strategies supporting healthy aging. Researchers highlight the importance of understanding how different muscles work together during each step. This approach could enhance mobility maintenance and quality of life for older adults through personalized exercise programs.
7Physiology of movement in aging
The study illuminates physiological changes in movement during aging. The ankle plays a dual role in maintaining balance and propelling the body forward. Age-related trade-offs in these functions form the basis of walking mechanics. Changes in muscle coordination help us understand complex effects of aging on the movement system.
8Importance of active aging
The research underscores that staying active remains crucial for older adults. Dr. Lindsay states: 'Small but consistent exercises can help people stay confident, mobile and independent longer.' These findings could guide development of personalized exercise programs to overcome physical challenges associated with aging.