Abstract
Objectives To determine whether slow gait represents a compensatory strategy to reduce the energetic cost of walking with age. Design Cross-sectional analysis. Setting Community-dwelling volunteers from the Baltimore Longitudinal Study of Aging (BLSA). Participants Four hundred twenty community-dwelling persons aged 32 to 96 (mean 68.1 ± 12.5) who underwent a physical examination, physical function testing, and energy expenditure assessment. Measurements Energy expenditure per minute (mL/kg/min) and per meter (mL/kg/m) during 2.5 minutes of overground walking at customary speed and usual gait speed over 6 m (m/s) were examined. General linear regression models were used to assess the relationship between customary walking energy expenditure and usual gait speed, adjusted for potential confounders including smoking, medical diagnoses, walking-related pain, and balance difficulty. Results Usual gait speed was slower with increasing age after age 65. Energy expenditure per minute during customary walking averaged 13.0 ± 2.8 mL/kg/min and was independent of age (ρ <0.01, P =.88). In contrast, energy expenditure per meter walked was progressively higher after age 65 (ρ = 0.35, P
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1811-1816 |
| Number of pages | 6 |
| Journal | Journal of the American Geriatrics Society |
| Volume | 60 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2012 |
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Keywords
- energy expenditure
- gait speed
- physical function
ASJC Scopus subject areas
- Geriatrics and Gerontology
Cite this
The role of energetic cost in the age-related slowing of gait speed. / Schrack, Jennifer A; Simonsick, Eleanor Marie; Chaves, Paulo H M; Ferrucci, Luigi.
In: Journal of the American Geriatrics Society, Vol. 60, No. 10, 10.2012, p. 1811-1816.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The role of energetic cost in the age-related slowing of gait speed
AU - Schrack, Jennifer A
AU - Simonsick, Eleanor Marie
AU - Chaves, Paulo H M
AU - Ferrucci, Luigi
PY - 2012/10
Y1 - 2012/10
N2 - Objectives To determine whether slow gait represents a compensatory strategy to reduce the energetic cost of walking with age. Design Cross-sectional analysis. Setting Community-dwelling volunteers from the Baltimore Longitudinal Study of Aging (BLSA). Participants Four hundred twenty community-dwelling persons aged 32 to 96 (mean 68.1 ± 12.5) who underwent a physical examination, physical function testing, and energy expenditure assessment. Measurements Energy expenditure per minute (mL/kg/min) and per meter (mL/kg/m) during 2.5 minutes of overground walking at customary speed and usual gait speed over 6 m (m/s) were examined. General linear regression models were used to assess the relationship between customary walking energy expenditure and usual gait speed, adjusted for potential confounders including smoking, medical diagnoses, walking-related pain, and balance difficulty. Results Usual gait speed was slower with increasing age after age 65. Energy expenditure per minute during customary walking averaged 13.0 ± 2.8 mL/kg/min and was independent of age (ρ <0.01, P =.88). In contrast, energy expenditure per meter walked was progressively higher after age 65 (ρ = 0.35, P
AB - Objectives To determine whether slow gait represents a compensatory strategy to reduce the energetic cost of walking with age. Design Cross-sectional analysis. Setting Community-dwelling volunteers from the Baltimore Longitudinal Study of Aging (BLSA). Participants Four hundred twenty community-dwelling persons aged 32 to 96 (mean 68.1 ± 12.5) who underwent a physical examination, physical function testing, and energy expenditure assessment. Measurements Energy expenditure per minute (mL/kg/min) and per meter (mL/kg/m) during 2.5 minutes of overground walking at customary speed and usual gait speed over 6 m (m/s) were examined. General linear regression models were used to assess the relationship between customary walking energy expenditure and usual gait speed, adjusted for potential confounders including smoking, medical diagnoses, walking-related pain, and balance difficulty. Results Usual gait speed was slower with increasing age after age 65. Energy expenditure per minute during customary walking averaged 13.0 ± 2.8 mL/kg/min and was independent of age (ρ <0.01, P =.88). In contrast, energy expenditure per meter walked was progressively higher after age 65 (ρ = 0.35, P
KW - energy expenditure
KW - gait speed
KW - physical function
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UR - http://www.scopus.com/inward/citedby.url?scp=84867523247&partnerID=8YFLogxK
U2 - 10.1111/j.1532-5415.2012.04153.x
DO - 10.1111/j.1532-5415.2012.04153.x
M3 - Article
C2 - 23035640
AN - SCOPUS:84867523247
VL - 60
SP - 1811
EP - 1816
JO - Journal of the American Geriatrics Society
JF - Journal of the American Geriatrics Society
SN - 0002-8614
IS - 10
ER -