BACKGROUND: Slow walking speed in elderly people predicts increased morbidity and mortality. We examined factors that may be associated with decreased habitual walking speed in older men and women. METHODS: Older (range: 60-88 years, mean = 72.5 years) men (n = 25) and women (n = 24) were recruited. The Short Physical Performance Battery, body composition, VO(₂peak) on a treadmill, VO₂ and rated perceived exertion during 10 minutes of walking at habitual gait speed and at a walking speed of 0.9 m/s, muscle strength, and level of physical activity were measured. RESULTS: VO(₂peak) was strongly related to habitual gait speed (r = .744, p < .001) and remained significant even after controlling for age, muscle strength, and gender. Compared with the tertile of fastest walkers (mean gait speed, 1.37 ± 0.04 m/s), the tertile of slowest walkers (0.87 ± 0.02 m/s) were older (p < .001), shorter (p = .026), had lower lean body mass (p = .011), lower strength ( p < .001), less self-reported daily physical activity (p = .102), and higher relative (to VO(₂peak)) intensity during walking at their habitual speed (65.3% ± 3.9% vs 54.3% ± 2.1% of VO(₂peak), p = .013). CONCLUSIONS: VO(p₂eak) was strongly associated with habitual walking speed, suggesting that as aerobic capacity declines with age, the exertion associated with habitual gait speed increases. A slowing of walking speed may be a response to increased perception of exertion. The extent to which exercise training affects habitual gait speed and fatigue is not clear.
BACKGROUND: Slow walking speed in elderly people predicts increased morbidity and mortality. We examined factors that may be associated with decreased habitual walking speed in older men and women. METHODS: Older (range: 60-88 years, mean = 72.5 years) men (n = 25) and women (n = 24) were recruited. The Short Physical Performance Battery, body composition, VO(₂peak) on a treadmill, VO₂ and rated perceived exertion during 10 minutes of walking at habitual gait speed and at a walking speed of 0.9 m/s, muscle strength, and level of physical activity were measured. RESULTS: VO(₂peak) was strongly related to habitual gait speed (r = .744, p < .001) and remained significant even after controlling for age, muscle strength, and gender. Compared with the tertile of fastest walkers (mean gait speed, 1.37 ± 0.04 m/s), the tertile of slowest walkers (0.87 ± 0.02 m/s) were older (p < .001), shorter (p = .026), had lower lean body mass (p = .011), lower strength ( p < .001), less self-reported daily physical activity (p = .102), and higher relative (to VO(₂peak)) intensity during walking at their habitual speed (65.3% ± 3.9% vs 54.3% ± 2.1% of VO(₂peak), p = .013). CONCLUSIONS: VO(p₂eak) was strongly associated with habitual walking speed, suggesting that as aerobic capacity declines with age, the exertion associated with habitual gait speed increases. A slowing of walking speed may be a response to increased perception of exertion. The extent to which exercise training affects habitual gait speed and fatigue is not clear.
Authors: Matthew J Peterson; Dana K Thompson; Carl F Pieper; Miriam C Morey; Virginia B Kraus; William E Kraus; Patrick Sullivan; Gerda Fillenbaum; Harvey J Cohen Journal: J Gerontol A Biol Sci Med Sci Date: 2015-03-05 Impact factor: 6.053
Authors: Robert H Coker; Nicholas P Hays; Rick H Williams; Robert R Wolfe; William J Evans Journal: J Gerontol A Biol Sci Med Sci Date: 2014-08-13 Impact factor: 6.053
Authors: Catherine A Richardson; Nancy W Glynn; Luigi G Ferrucci; Dawn C Mackey Journal: J Gerontol A Biol Sci Med Sci Date: 2014-09-04 Impact factor: 6.053
Authors: H Master; T Neogi; L F Callahan; A E Nelson; M LaValley; R J Cleveland; Y M Golightly; L M Thoma; Y Zhang; D Voinier; M B Christiansen; J T Jakiela; M Nevitt; C E Lewis; L A Frey-Law; D K White Journal: Osteoarthritis Cartilage Date: 2020-08-28 Impact factor: 6.576