TY - JOUR
T1 - Physical activity, exercise, and inflammatory markers in older adults
T2 - Findings from the health, aging and body composition study
AU - Colbert, Lisa H.
AU - Visser, Marjolein
AU - Simonsick, Eleanor M.
AU - Tracy, Russell P.
AU - Newman, Anne B.
AU - Kritchevsky, Stephen B.
AU - Pahor, Marco
AU - Taaffe, Dennis R.
AU - Brach, Jennifer
AU - Rubin, Susan
AU - Harris, Tamara B.
PY - 2004/7
Y1 - 2004/7
N2 - OBJECTIVES: To examine the association between physical activity and inflammatory markers, with consideration for body fatness and antioxidant use. DESIGN: Cross-sectional study, using baseline data from the Health, Aging and Body Composition Study. SETTING: Metropolitan areas surrounding Pittsburgh, Pennsylvania, and Memphis, Tennessee. PARTICIPANTS: Black and white, well-functioning men and women (N = 3,075), aged 70 to 79. MEASUREMENTS: Interviewer-administered questionnaires of previous-week household, walking, exercise, and occupational/volunteer physical activities. Analysis of covariance was used to examine the association between activity level and serum C-reactive protein (CRP), interleukin-6 (IL-6), and plasma tumor necrosis factor alpha (TNFα) with covariate adjustment. Antioxidant supplement use (multivitamin, vitamins E or C, beta carotene) was evaluated as an effect modifier of the association. RESULTS: Higher levels of exercise were associated with lower levels of CRP (P < .01), IL-6 (P < .001), and TNFα (P =.02) (e.g., CRP = 1.95 mg/L for no exercise and 1.72 for > 180 min/wk). Adjustment for body fatness attenuated the associations somewhat. Use of antioxidant supplements modified the CRP (Pinteraction = .01) and IL-6 (Pinteraction = .08) associations such that concentrations were low in those taking supplements (e.g., CRP = 1.79-1.84 across exercise levels) and higher in nonsupplement users who did no exercise (2.03) than in those who did the most (1.72). Among nonexercisers, higher levels of other physical activity were related to lower levels of CRP (P > .01) and IL-6 (P = .02) but not TNFα (P = .36), even after accounting for body fat. CONCLUSION: Inflammatory markers are lower in older adults with higher levels of exercise and nonexercise activity and in antioxidant supplement users regardless of exercise level.
AB - OBJECTIVES: To examine the association between physical activity and inflammatory markers, with consideration for body fatness and antioxidant use. DESIGN: Cross-sectional study, using baseline data from the Health, Aging and Body Composition Study. SETTING: Metropolitan areas surrounding Pittsburgh, Pennsylvania, and Memphis, Tennessee. PARTICIPANTS: Black and white, well-functioning men and women (N = 3,075), aged 70 to 79. MEASUREMENTS: Interviewer-administered questionnaires of previous-week household, walking, exercise, and occupational/volunteer physical activities. Analysis of covariance was used to examine the association between activity level and serum C-reactive protein (CRP), interleukin-6 (IL-6), and plasma tumor necrosis factor alpha (TNFα) with covariate adjustment. Antioxidant supplement use (multivitamin, vitamins E or C, beta carotene) was evaluated as an effect modifier of the association. RESULTS: Higher levels of exercise were associated with lower levels of CRP (P < .01), IL-6 (P < .001), and TNFα (P =.02) (e.g., CRP = 1.95 mg/L for no exercise and 1.72 for > 180 min/wk). Adjustment for body fatness attenuated the associations somewhat. Use of antioxidant supplements modified the CRP (Pinteraction = .01) and IL-6 (Pinteraction = .08) associations such that concentrations were low in those taking supplements (e.g., CRP = 1.79-1.84 across exercise levels) and higher in nonsupplement users who did no exercise (2.03) than in those who did the most (1.72). Among nonexercisers, higher levels of other physical activity were related to lower levels of CRP (P > .01) and IL-6 (P = .02) but not TNFα (P = .36), even after accounting for body fat. CONCLUSION: Inflammatory markers are lower in older adults with higher levels of exercise and nonexercise activity and in antioxidant supplement users regardless of exercise level.
KW - Aging
KW - C-reactive protein
KW - Exercise
KW - Inflammation
KW - Interleukin-6
KW - Physical activity
KW - Tumor necrosis factor alpha
UR - http://www.scopus.com/inward/record.url?scp=3042719532&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=3042719532&partnerID=8YFLogxK
U2 - 10.1111/j.1532-5415.2004.52307.x
DO - 10.1111/j.1532-5415.2004.52307.x
M3 - Article
C2 - 15209647
AN - SCOPUS:3042719532
SN - 0002-8614
VL - 52
SP - 1098
EP - 1104
JO - Journal of the American Geriatrics Society
JF - Journal of the American Geriatrics Society
IS - 7
ER -