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Aging Clinical and Experimental Research· 2026Q1

Can grip strength capture what chair standing does? methodological considerations on functional measures and successful aging in three international cohorts

Kudratova Zebo, Azamat Karabaev, Vazira Raxmanova, A. (A) Sadykova et al.

Short summary

A multi-cohort study on grip strength and successful aging reveals that grip strength may not fully capture functional determinants, and methodological issues like self-reported disease bias and temporal design limitations affect cross-population comparability.

AI-generated from the title and abstract; the full text is not read.

Key points

  • Grip strength may not fully represent all functional determinants of successful aging.
  • Self-reported chronic disease data can introduce misclassification bias, varying by socioeconomic status.
  • The study's temporal design and cohort-specific cognitive thresholds limit cross-population comparability.
  • Methodological reflection is needed to strengthen future multi-cohort studies on aging.

AI-generated from the title and abstract; the full text is not read.

Abstract

Population aging has accelerated globally, making successful aging a key public health priority. Zhuang and Gao address the prospective association between cumulative average grip strength and successful aging using three international cohorts. While their multi-cohort design offers valuable cross-population insights, several methodological choices warrant consideration. Grip strength may not fully capture functional determinants of successful aging. Self-reported chronic disease introduces misclassification bias varying across socioeconomic groups. The two-stage temporal design does not fully address selection bias and cross-cohort comparability from heterogeneous exposure windows. Additionally, the cohort-relative cognitive threshold undermines cross-population comparability. These considerations highlight the need for methodological reflection and suggest directions for strengthening future multi-cohort studies.

The authors' abstract, as published at the source. Aging Clinical and Experimental Research, 2026 · DOI ↗

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Field: Neuropsychology and Physiological Psychology

Neuropsychology and Physiological PsychologyPsychology