Body Composition

Physical fitness and cognitive function: a cross-sectional study among adults in Qatar.

TL;DR

Overall physical fitness capacity is associated with better cognitive function in Qatari adults, with the relationship between specific fitness measures and cognitive function varying by sex, with muscle strength having a stronger effect for males and body composition for females.

Key Findings

Lower physical fitness capacity was significantly associated with lower psychomotor coordination in females but not in males.

  • Female association: OR=1.57, p=0.040
  • Male association: OR=1.65, p=0.062 (not statistically significant)
  • Study population: 1000 adults aged 40 years and older from the Qatar Biobank
  • Logistic regression was used to measure the association

Lower physical fitness capacity was significantly associated with lower short-term visual memory in females but not in males.

  • Female association: OR=1.68, p=0.042
  • Male association: OR=1.58, p=0.062 (not statistically significant)
  • Cognitive function was assessed through tests of short-term visual memory and psychomotor coordination
  • Cross-sectional design limits causal inference

Greater muscle strength in males was associated with approximately half the likelihood of having lower psychomotor coordination.

  • OR=0.48, p=0.04 for males with greater muscle strength
  • This protective association was observed specifically in males
  • No comparable significant association was reported for muscle strength in females
  • Muscular strength was among the physical fitness measures included in the study

Higher body fat percentage in females was associated with poorer cognitive function across both cognitive domains.

  • Each 1% increase in body fat was linked to 6% higher odds of low short-term visual memory (p=0.02)
  • Each 1% increase in body fat was linked to 6% higher odds of low psychomotor coordination (p=0.006)
  • This association was specific to females
  • Body composition was one of the physical fitness measures assessed

Cardiorespiratory fitness showed no statistically significant association with short-term visual memory or psychomotor coordination in either sex.

  • No significant association was found for cardiorespiratory fitness in males or females
  • Cardiorespiratory fitness was one of the physical fitness components measured in the study
  • This null finding applied to both cognitive outcomes assessed
  • The study used data from 1000 adults aged 40 and above from the Qatar Biobank

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Citation

Alabdulrazzak A, Al-Louzi T, Rahhal M, Albaloshi A, Al-Emadi R, Al Mohannadi M, et al.. (2026). Physical fitness and cognitive function: a cross-sectional study among adults in Qatar.. BMJ open. https://doi.org/10.1136/bmjopen-2025-113261