Citation
Petersen, Curtis L.; Christensen, Brock C.; & Batsis, John A. (2021). Weight Management Intervention Identifies Association of Decreased DNA Methylation Age with Improved Functional Age Measures in Older Adults with Obesity. Clinical Epigenetics, 13(1), 46. PMCID: PMC7927264Abstract
BACKGROUND: Assessing functional ability is an important component of understanding healthy aging. Objective measures of functional ability include grip strength, gait speed, sit-to-stand time, and 6-min walk distance. Using samples from a weight loss clinical trial in older adults with obesity, we examined the association between changes in physical function and DNA-methylation-based biological age at baseline and 12 weeks in 16 individuals. Peripheral blood DNA methylation was measured (pre/post) with the Illumina HumanMethylationEPIC array and the Hannum, Horvath, and PhenoAge DNA methylation age clocks were used. Linear regression models adjusted for chronological age and sex tested the relationship between DNA methylation age and grip strength, gait speed, sit-to-stand, and 6-min walk.RESULTS: Participant mean weight loss was 4.6 kg, and DNA methylation age decreased 0.8, 1.1, and 0.5 years using the Hannum, Horvath, and PhenoAge DNA methylation clocks respectively. Mean grip strength increased 3.2 kg. Decreased Hannum methylation age was significantly associated with increased grip strength (
URL
http://dx.doi.org/10.1186/s13148-021-01031-7Reference Type
Journal ArticleYear Published
2021Journal Title
Clinical EpigeneticsAuthor(s)
Petersen, Curtis L.Christensen, Brock C.
Batsis, John A.