Abstract
OBJECTIVES: To test whether accelerated sarcopenia in older persons with high interleukin (IL)-6 serum levels plays a role in the prospective association between inflammation and disability found in many studies. DESIGN: Cohort study of older women with moderate to severe disability. PARTICIPANTS: Six hundred twenty older women from the Women's Health and Aging Study in whom information on baseline IL-6 serum level was available. MEASUREMENTS: Self-report of functional status, objective measures of walking performance, and knee extensor strength were assessed at baseline and over six semiannual follow-up visits. Potential confounders were baseline age, race, body mass index, smoking, depression, and medical conditions. RESULTS: At baseline, women with high IL-6 were more often disabled and had lower walking speed. After adjusting for confounders, women in the highest IL-6 tertile (IL-6 >3.10 pg/mL) were at higher risk of developing incident mobility disability (risk ratio (RR) = 1.50, 95% confidence interval (CI) = 1.01-2.27), disability in activities of daily living (RR = 1.41, 95% CI = 1.01-1.98), and severe limitation in walking (RR = 1.61, 95% CI = 1.09-2.38) and experienced steeper declines in walking speed (P <.001) than women in the lowest IL-6 tertile (IL-6 ≤1.78 pg/mL). Decline in knee extensor strength was also steeper, but differences across IL-6 tertiles were not significant. After adjusting for change over time in knee extensor strength, the association between high IL-6 and accelerated decline of physical function was no longer statistically significant. CONCLUSIONS: Older women with high IL-6 serum levels have a higher risk of developing physical disability and experience a steeper decline in walking ability than those with lower levels, which are partially explained by a parallel decline in muscle strength.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1947-1954 |
| Number of pages | 8 |
| Journal | Journal of the American Geriatrics Society |
| Volume | 50 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 1 2002 |
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Keywords
- Aging
- Cytokines
- Disability
- IL-6
- Inflammation
- Older women
ASJC Scopus subject areas
- Geriatrics and Gerontology
Cite this
Change in muscle strength explains accelerated decline of physical function in older women with high interleukin-6 serum levels. / Ferrucci, Luigi; Penninx, Brenda W J H; Volpato, Stefano; Harris, Tamara B.; Bandeen Roche, Karen J; Balfour, Jennifer; Leveille, Suzanne G.; Fried, Linda P; Guralnik, Jack M.
In: Journal of the American Geriatrics Society, Vol. 50, No. 12, 01.12.2002, p. 1947-1954.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Change in muscle strength explains accelerated decline of physical function in older women with high interleukin-6 serum levels
AU - Ferrucci, Luigi
AU - Penninx, Brenda W J H
AU - Volpato, Stefano
AU - Harris, Tamara B.
AU - Bandeen Roche, Karen J
AU - Balfour, Jennifer
AU - Leveille, Suzanne G.
AU - Fried, Linda P
AU - Guralnik, Jack M.
PY - 2002/12/1
Y1 - 2002/12/1
N2 - OBJECTIVES: To test whether accelerated sarcopenia in older persons with high interleukin (IL)-6 serum levels plays a role in the prospective association between inflammation and disability found in many studies. DESIGN: Cohort study of older women with moderate to severe disability. PARTICIPANTS: Six hundred twenty older women from the Women's Health and Aging Study in whom information on baseline IL-6 serum level was available. MEASUREMENTS: Self-report of functional status, objective measures of walking performance, and knee extensor strength were assessed at baseline and over six semiannual follow-up visits. Potential confounders were baseline age, race, body mass index, smoking, depression, and medical conditions. RESULTS: At baseline, women with high IL-6 were more often disabled and had lower walking speed. After adjusting for confounders, women in the highest IL-6 tertile (IL-6 >3.10 pg/mL) were at higher risk of developing incident mobility disability (risk ratio (RR) = 1.50, 95% confidence interval (CI) = 1.01-2.27), disability in activities of daily living (RR = 1.41, 95% CI = 1.01-1.98), and severe limitation in walking (RR = 1.61, 95% CI = 1.09-2.38) and experienced steeper declines in walking speed (P <.001) than women in the lowest IL-6 tertile (IL-6 ≤1.78 pg/mL). Decline in knee extensor strength was also steeper, but differences across IL-6 tertiles were not significant. After adjusting for change over time in knee extensor strength, the association between high IL-6 and accelerated decline of physical function was no longer statistically significant. CONCLUSIONS: Older women with high IL-6 serum levels have a higher risk of developing physical disability and experience a steeper decline in walking ability than those with lower levels, which are partially explained by a parallel decline in muscle strength.
AB - OBJECTIVES: To test whether accelerated sarcopenia in older persons with high interleukin (IL)-6 serum levels plays a role in the prospective association between inflammation and disability found in many studies. DESIGN: Cohort study of older women with moderate to severe disability. PARTICIPANTS: Six hundred twenty older women from the Women's Health and Aging Study in whom information on baseline IL-6 serum level was available. MEASUREMENTS: Self-report of functional status, objective measures of walking performance, and knee extensor strength were assessed at baseline and over six semiannual follow-up visits. Potential confounders were baseline age, race, body mass index, smoking, depression, and medical conditions. RESULTS: At baseline, women with high IL-6 were more often disabled and had lower walking speed. After adjusting for confounders, women in the highest IL-6 tertile (IL-6 >3.10 pg/mL) were at higher risk of developing incident mobility disability (risk ratio (RR) = 1.50, 95% confidence interval (CI) = 1.01-2.27), disability in activities of daily living (RR = 1.41, 95% CI = 1.01-1.98), and severe limitation in walking (RR = 1.61, 95% CI = 1.09-2.38) and experienced steeper declines in walking speed (P <.001) than women in the lowest IL-6 tertile (IL-6 ≤1.78 pg/mL). Decline in knee extensor strength was also steeper, but differences across IL-6 tertiles were not significant. After adjusting for change over time in knee extensor strength, the association between high IL-6 and accelerated decline of physical function was no longer statistically significant. CONCLUSIONS: Older women with high IL-6 serum levels have a higher risk of developing physical disability and experience a steeper decline in walking ability than those with lower levels, which are partially explained by a parallel decline in muscle strength.
KW - Aging
KW - Cytokines
KW - Disability
KW - IL-6
KW - Inflammation
KW - Older women
UR - http://www.scopus.com/inward/record.url?scp=0036903170&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0036903170&partnerID=8YFLogxK
U2 - 10.1046/j.1532-5415.2002.50605.x
DO - 10.1046/j.1532-5415.2002.50605.x
M3 - Article
VL - 50
SP - 1947
EP - 1954
JO - Journal of the American Geriatrics Society
JF - Journal of the American Geriatrics Society
SN - 0002-8614
IS - 12
ER -