Physical Performance and Telomere Length in Older Adults

Area of Science:

• Gerontology and aging research
• Biomarkers of aging
• Molecular biology and genetics

Background:

• The growing elderly population necessitates identifying risk factors and biomarkers for healthy aging.
• Telomere length is a key indicator of cellular aging and has been associated with various age-related conditions.

Purpose of the Study:

• To investigate the relationship between physical performance and absolute telomere length in older Mexican adults.
• To determine if telomere length can serve as a biomarker for distinguishing healthy from unhealthy aging.

Main Methods:

• 323 older Mexican adults were assessed for physical performance using the Short Physical Performance Battery.
• Absolute telomere length was measured using quantitative polymerase chain reaction (qPCR).
• Statistical analyses included calculating means, adjusted means, effect sizes (Cohen's d), and odds ratios.

Main Results:

• Participants with low physical performance exhibited significantly shorter telomeres compared to those with high physical performance.
• A medium-to-high effect size (d = 0.762) was observed between physical performance and telomere length.
• Each kilobase of telomere attrition increased the odds of low physical activity by 2.1 to 6.1 times.

Conclusions:

• Reduced physical function in older adults is significantly associated with shorter telomere length.
• Absolute telomere length shows potential as a valuable biomarker for assessing healthy aging.
• Further research is warranted to explore the clinical utility of telomere length in aging populations.