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Related Experiment Videos

Biological age--a concept whose time has come: a preliminary study.

Jacqueline Goffaux1, Gottlieb C Friesinger, Warren Lambert

  • 1Vanderbilt University, Department of Medicine, Division of Cardiovascular Medicine, Nashville, Tennessee, USA.

Southern Medical Journal
|November 22, 2005
PubMed
Summary
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Biological age (BA/PR) effectively predicts health outcomes and mortality in older adults, outperforming chronological age. This approach aids clinical decisions by assessing physiologic reserve and the aging process.

Area of Science:

  • Gerontology
  • Biomedical Science
  • Clinical Medicine

Background:

  • Chronological age is an insufficient predictor of biological age (BA) or physiologic reserve (PR).
  • Heterogeneity in aging necessitates objective measures for improved clinical decision-making in the elderly.

Purpose of the Study:

  • To develop and validate a Biological Age/Physiologic Reserve (BA/PR) index.
  • To assess the predictive utility of the BA/PR index for functional outcomes and mortality in older adults.

Main Methods:

  • A pilot study of 130 healthy volunteers (ages 70-95) developed a BA/PR index using measures of endurance, strength, flexibility, balance, cognition, depression, comorbidity, and exercise.
  • A second study utilized a Veterans Administration database to apply the BA/PR concept to predict mortality after coronary artery bypass graft (CABG) surgery.

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Main Results:

  • The BA/PR index demonstrated superior prediction of 3-year functional outcomes and mortality compared to chronological age.
  • In the CABG cohort, BA/PR variables significantly enhanced the prediction of both short-term (6-month) and long-term mortality.

Conclusions:

  • The BA/PR approach is a valuable tool for predicting health outcomes in the elderly population.
  • Further research is needed to develop routine tools for tracking the aging process using BA/PR.