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The MAT-sf: identifying risk for major mobility disability.

W Jack Rejeski1, Julia Rushing2, Jack M Guralnik3

  • 1Department of Health & Exercise Science, Wake Forest University, Winston-Salem, North Carolina. rejeski@wfu.edu.

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
|February 15, 2015
PubMed
Summary

The Mobility Assessment Tool-short form (MAT-sf) effectively identifies older adults at risk for major mobility disability (MMD). Lower MAT-sf scores strongly correlate with higher MMD incidence, aiding clinical intervention.

Keywords:
Geriatric assessmentLIFE studyMAT-sfMobility disabilityPhysical function.

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Area of Science:

  • Gerontology
  • Geriatric Medicine
  • Biostatistics

Background:

  • Assessing mobility is crucial for aging research and clinical geriatric practice.
  • The Mobility Assessment Tool-short form (MAT-sf) is a novel self-report measure using video animations to enhance mobility assessment accuracy.
  • This study aimed to determine if MAT-sf scores can predict the risk of major mobility disability (MMD).

Purpose of the Study:

  • To evaluate the efficacy of the MAT-sf in identifying older adults at risk for major mobility disability (MMD).
  • To establish the predictive validity of MAT-sf scores for incident MMD over a 42-month period.

Main Methods:

  • Data from 1,574 participants (aged 70-89) in the Lifestyle Interventions and Independence for Elders study were analyzed.
  • The MAT-sf was administered at baseline, and MMD (defined as inability to complete a 400-m walk in ≤15 minutes) was assessed every 6 months for 42 months.
  • Statistical analyses controlled for age, sex, clinic site, and treatment arm.

Main Results:

  • Baseline MAT-sf scores significantly predicted MMD risk (p < .0001) after controlling for covariates.
  • Individuals with MAT-sf scores <40 had a 66% MMD failure rate, compared to 22% for those with scores 60+ over 42 months.
  • A clear dose-response relationship was observed, with progressively higher MAT-sf scores associated with lower MMD incidence.

Conclusions:

  • The MAT-sf is a rapid and effective tool for identifying older adults at risk of MMD.
  • Clinical implementation of the MAT-sf can aid in identifying individuals needing mobility interventions.
  • The MAT-sf offers a simple method for monitoring patient mobility status, a key aspect of functional health in older adults.