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Lung function and cognitive ability in a longitudinal birth cohort study.

Marcus Richards1, David Strachan, Rebecca Hardy

  • 1MRC National Survey of Health and Development, University College London, UK. m.richards@ucl.ac.uk

Psychosomatic Medicine
|July 28, 2005
PubMed
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Lung function, measured as forced expiratory volume in 1 second (FEV1), is linked to cognitive abilities like psychomotor speed in midlife. This association persists even after accounting for various health and lifestyle factors.

Area of Science:

  • Respiratory Medicine
  • Neuroscience
  • Epidemiology

Background:

  • Lung function, specifically forced expiratory volume in 1 second (FEV1), is a key indicator of respiratory health.
  • Cognitive abilities encompass various functions including psychomotor speed, verbal ability, and memory.
  • The relationship between respiratory health and cognitive function across the lifespan is an area of ongoing research.

Purpose of the Study:

  • To investigate the association between FEV1 and cognitive function in a midlife population.
  • To determine if this association is independent of potential confounding factors such as socioeconomic status, smoking, and early respiratory health.

Main Methods:

  • Utilized multiple regression analysis on data from 1778 participants in the MRC National Survey of Health and Development (British 1946 birth cohort).

Related Experiment Videos

  • Adjusted for numerous covariates including sex, body size, socioeconomic status, smoking history, and indicators of early respiratory vulnerability.
  • Assessed FEV1 at age 43 and cognitive functions at ages 43 and 53.

    • Main Results:

    • FEV1 at age 43 was independently associated with slower psychomotor speed at age 43 and a slower decline in psychomotor speed from 43 to 53.
    • No independent associations were found for verbal ability, verbal memory, or memory decline, which were influenced by socioeconomic status and adolescent cognition.
    • Adolescent cognition was positively associated with FEV1 at age 43, independent of confounders.

    Conclusions:

    • Cognitive function and FEV1 demonstrate a positive association throughout life.
    • Potential mechanisms include the parallel influence of endocrine, autonomic, and motor control systems on both respiration and cognitive functions.
    • The observed link between lung function and cognition may have clinical significance due to their shared association with functional capacity and survival.