TY - JOUR
T1 - Hospitalization and change in body composition and strength in a population-based cohort of older persons
AU - Alley, Dawn E.
AU - Koster, Annemarie
AU - MacKey, Dawn
AU - Cawthon, Peggy
AU - Ferrucci, Luigi
AU - Simonsick, Eleanor M.
AU - Yu, Binbing
AU - Hardy, Susan
AU - Goodpaster, Bret
AU - Sarkisian, Catherine
AU - Houston, Denise K.
AU - Kritchevsky, Stephen B.
AU - Cummings, Steven
AU - Lee, Jung Sun
AU - Tylavsky, Frances A.
AU - Newman, Anne
AU - Harris, Tamara
PY - 2010/11
Y1 - 2010/11
N2 - OBJECTIVES: To examine the association between hospitalization and annual changes in body composition and strength in older adults. DESIGN: Cohort study. SETTING: Clinic examinations in Pittsburgh, Pennsylvania, or Memphis, Tennessee. PARTICIPANTS: Well-functioning adults aged 70 to 79 who participated in the Health, Aging and Body Composition Study. MEASUREMENTS: Hospitalizations were reported at annual clinic visits and in semiannual phone interviews. In the event of death or reported hospitalization, hospitalizations were adjudicated according to medical record review. Dual X-ray absorptiometry (DXA) assessments of total, lean, and fat mass were conducted in six annual examinations, and measures of knee extensor strength were conducted in two annual examinations. RESULTS: DXA assessments followed 2,309 hospitalizations. In men and women, hospitalization in the previous year was associated with greater declines in total mass (-0.76 and-0.81 kg, respectively), fat mass (-0.41 and-0.54 kg), and lean mass (-0.33 and-0.25 kg) (P<.001 for all) than in nonhospitalized participants, after adjustment for demographics and baseline values. Hospitalization was associated with strength declines in men (-4.02 Nm, P=.046) but not in women. Relationships were similar after adjusting for health behaviors and chronic conditions, although the association between hospitalization and strength was attenuated. Associations increased with number of days hospitalized; hospitalizations totaling 8 days or more in the previous year were associated with significantly greater loss of total, lean, and fat mass and loss of strength in both sexes than in nonhospitalized participants. CONCLUSION: Hospitalization is associated with significant changes in body composition and strength in older persons. These effects appear particularly important in persons hospitalized for 8 or more days per year.
AB - OBJECTIVES: To examine the association between hospitalization and annual changes in body composition and strength in older adults. DESIGN: Cohort study. SETTING: Clinic examinations in Pittsburgh, Pennsylvania, or Memphis, Tennessee. PARTICIPANTS: Well-functioning adults aged 70 to 79 who participated in the Health, Aging and Body Composition Study. MEASUREMENTS: Hospitalizations were reported at annual clinic visits and in semiannual phone interviews. In the event of death or reported hospitalization, hospitalizations were adjudicated according to medical record review. Dual X-ray absorptiometry (DXA) assessments of total, lean, and fat mass were conducted in six annual examinations, and measures of knee extensor strength were conducted in two annual examinations. RESULTS: DXA assessments followed 2,309 hospitalizations. In men and women, hospitalization in the previous year was associated with greater declines in total mass (-0.76 and-0.81 kg, respectively), fat mass (-0.41 and-0.54 kg), and lean mass (-0.33 and-0.25 kg) (P<.001 for all) than in nonhospitalized participants, after adjustment for demographics and baseline values. Hospitalization was associated with strength declines in men (-4.02 Nm, P=.046) but not in women. Relationships were similar after adjusting for health behaviors and chronic conditions, although the association between hospitalization and strength was attenuated. Associations increased with number of days hospitalized; hospitalizations totaling 8 days or more in the previous year were associated with significantly greater loss of total, lean, and fat mass and loss of strength in both sexes than in nonhospitalized participants. CONCLUSION: Hospitalization is associated with significant changes in body composition and strength in older persons. These effects appear particularly important in persons hospitalized for 8 or more days per year.
KW - function
KW - hospitalization
KW - lean mass
KW - strength
KW - weight loss
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U2 - 10.1111/j.1532-5415.2010.03144.x
DO - 10.1111/j.1532-5415.2010.03144.x
M3 - Article
C2 - 21054288
AN - SCOPUS:78449304804
SN - 0002-8614
VL - 58
SP - 2085
EP - 2091
JO - Journal of the American Geriatrics Society
JF - Journal of the American Geriatrics Society
IS - 11
ER -