To determine if poorer gait variability and gait coordination among mobility-limited older adults is related to their slower walking speed.
University research laboratory.
Community-dwelling adults (N=69) 68 years or older with (Short Physical Performance Battery score ≤9; n=37) and without (n=32) mobility limitations.
Main Outcome Measures
The variability of step length, swing time percent, and step width. Gait coordination was assessed along with the Phase Coordination Index.
The usual pace gait speed of those without mobility limitations was faster (1.22±0.14m/s vs 0.71±0.14m/s; P<.001) and less variable in all gait characteristics (all P<.001), with the exception of step width (P=.185), than those with limitations. When those without limitations slowed their walking pace (0.71m/s±0.14), their gait coordination became poorer (P<.001), and the variability of all gait characteristics increased (all P<.001) except for step width, which decreased (P=.002). When those without mobility limitations walked at a slow pace, they had better gait coordination (P=.008) and less variable step length (P=.014) and swing time percent (P=.036). The variability of stride time (P=.260) and step width (P=.385) were not significantly different than that of their peers with limitations.
Increased variability in some gait characteristics of mobility-limited older adults appears to be related to their slower walking speed. Gait coordination and the variability of step length and swing time percent may reflect intrinsic differences in mobility-limited older adults that are independent of walking speed.
List of abbreviations:PCI (Phase Coordination Index), SPPB (Short Physical Performance Battery)
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- Gait variability and fall risk in community-living older adults: a 1-year prospective study.Arch Phys Med Rehabil. 2001; 82: 1050-1056
- Gait variability and the risk of incident mobility disability in community-dwelling older adults.J Gerontol A Biol Sci Med Sci. 2007; 62: 983-988
- Gait variability in community-dwelling older adults.J Am Geriatr Soc. 2001; 49: 1646-1650
- Too much or too little step width variability is associated with a fall history in older persons who walk at or near normal gait speed.J Neuroeng Rehabil. 2005; 2: 21
- Gait dynamics, fractals and falls: finding meaning in the stride-to-stride fluctuations of human walking.Hum Mov Sci. 2007; 26: 555-589
- Walking speed-related changes in stride time variability: effects of decreased speed.J Neuroeng Rehabil. 2009; 6: 32
- Separating the effects of age and walking speed on gait variability.Gait Posture. 2008; 27: 572-577
- Challenging the motor control of walking: gait variability during slower and faster pace walking conditions in younger and older adults.Arch Gerontol Geriatr. 2016; 66: 54-61
- Effect of gait speed on gait rhythmicity in Parkinson's disease: variability of stride time and swing time respond differently.J Neuroeng Rehabil. 2005; 2: 23
- Variability of step kinematics in young and older adults.Gait Posture. 2004; 20: 26-29
- Walking speed influences on gait cycle variability.Gait Posture. 2007; 26: 128-134
- Stride variability: beyond length and frequency.Gait Posture. 2004; 20: 304
- Validity of the gait variability index in older adults: effect of aging and mobility impairments.Gait Posture. 2015; 41: 941-946
- Meaningful change in measures of gait variability in older adults.Gait Posture. 2010; 31: 175-179
- Gait, gait variability and the risk of multiple incident falls in older people: a population-based study.Age Ageing. 2011; 40: 481-487
- Ageing and gait variability--a population-based study of older people.Age Ageing. 2010; 39: 191-197
- The application of multilevel modelling to account for the influence of walking speed in gait analysis.Gait Posture. 2016; 43: 216-219
- The effect of gait speed on lateral balance control during walking in healthy elderly.Gait Posture. 2003; 18: 27-36
- A new measure for quantifying the bilateral coordination of human gait: effects of aging and Parkinson's disease.Exp Brain Res. 2007; 181: 561-570
- Gait coordination impairment is associated with mobility in older adults.Exp Gerontol. 2016; 80: 12-16
- Effects of walking speed on asymmetry and bilateral coordination of gait.Gait Posture. 2013; 38: 864-869
- Use of the Mini-Mental State Examination (MMSE) in a community population of mixed ethnicity. Cultural and linguistic artifacts.J Nerv Ment Dis. 1986; 174: 607-614
- Lower extremity function and subsequent disability: consistency across studies, predictive models, and value of gait speed alone compared with the short physical performance battery.J Gerontol A Biol Sci Med Sci. 2000; 55: M221-M231
- Lower extremity performance in nondisabled older persons as a predictor of subsequent hospitalization.J Gerontol A Biol Sci Med Sci. 2000; 55: M691-M697
- Physical performance measures in the clinical setting.J Am Geriatr Soc. 2003; 51: 314-322
- Meaningful change and responsiveness in common physical performance measures in older adults.J Am Geriatr Soc. 2006; 54: 743-749
- A short physical performance battery assessing lower extremity function: association with self-reported disability and prediction of mortality and nursing home admission.J Gerontol. 1994; 49: M85-94
- Increased gait unsteadiness in community-dwelling elderly fallers.Arch Phys Med Rehabil. 1997; 78: 278-283
- "Mini-mental state". A practical method for grading the cognitive state of patients for the clinician.J Psychiatr Res. 1975; 12: 189-198
- Variability in spatiotemporal step characteristics and its relationship to walking performance post-stroke.Gait Posture. 2009; 29: 408-414
- Cognitive function, gait, and gait variability in older people: a population-based study.J Gerontol A Biol Sci Med Sci. 2013; 68: 726-732
- Stance time and step width variability have unique contributing impairments in older persons.Gait Posture. 2008; 27: 431-439
- Etiology and modification of gait instability in older adults: a randomized controlled trial of exercise.J Appl Physiol. 2001; 90: 2117-2129
Published online: May 13, 2020
Supported by the National Institute on Aging (grant no. K01AG053461 to E.J.; grant no. R01AG041525-05 to S.L.) and the National Institute of Child Health and Human Development (grant no. K24HD070966-04 to J.B.).
© 2020 by the American Congress of Rehabilitation Medicine