Work

Intermuscular Adiposity: a Novel Risk Factor for Cognitive Decline in a Biracial Cohort of Older Adults

Year: 2022

Type: conference-abstract

Abstract: Skeletal muscle and brain health both decline with age. Poorer skeletal muscle characteristics may be early markers of cognitive decline. The Health ABC study obtained repeated measures of thigh intermuscular adiposity via CT (IMAT, Years 1 and 6) and Mini-Mental State Exam (MMSE, Years 1 through 10), in 1634 adults (69-79 years, 48% women, 35% black). Linear mixed effects models accounted for change (Years 1 and 6) in weight, muscle (strength, area), and adiposity characteristics (abdominal subcutaneous, visceral, total fat mass) and for dementia risk factors (education, APOE4, diabetes, hypertension, physical activity). IMAT increased by 0.97 cm2/year (SD:1.16), and MMSE declined by 0.4 points/year (0.02). Each SD of IMAT corresponded to a MMSE decline of 0.22 points/year (p<0.0001), similar in adjusted models and stratified by race or gender. Aging-related IMAT increase may be a novel predictor of cognitive decline beyond traditional risk factors, with potential implications for muscle-brain cross talk.

Source: Innovation in Aging

DOI: 10.1093/geroni/igac059.1310

Authors: Caterina Rosano, Anne Newman, Xiaonan Zhu, Adam Santanasto, Bret Goodpaster, Iva Miljkovic

Institutions: University of Pittsburgh, AdventHealth Orlando

Language: English

Topic: Dementia and Cognitive Impairment Research

Subfield: Psychiatry and Mental health

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $3,615