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A dynamic microeconomic analysis of the impact of physical activity on cognition among older people

机译：一种动态微观经济学分析对老年人对认知的影响

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摘要

This microeconomic study explores the dynamic relationship between physical activity and cognition, using longitudinal data from 6 waves of the Survey of Health, Ageing and Retirement in Europe (SHARE) between 2004 and 2017. Physical activity has drawn significant attention as a potentially successful action for protecting brain health and cognition in the aging population, but the empirical evidence in observational studies is inconclusive to date. We add to the literature by estimating the effect of physical activity on cognition, tackling many sources of bias, which have previously not been addressed consistently. The challenge in estimating the effect of physical activity on cognition is the dynamics of cognition and the endogeneity of physical activity caused by unobserved heterogeneity, reverse causality and measurement error. To address this endogeneity and at the same time control for lagged cognition, we propose a system - generalized method of moments (GMM) estimator, using lagged levels and differences of the endogenous explanatory variables as instruments, while transforming out the fixed effects. We find that being moderately & vigorously physically active at least once a week increases memory status by 0.282 and 0.552 standard deviations for men and women respectively. We find different effects for varying physical activity intensity. (C) 2020 Elsevier B.V. All rights reserved.
机译：这种微观经济学研究探讨了体育活动和认知之间的动态关系，从2004年至2017年期间的欧洲（股票）调查的6张浪潮中的纵向数据（分享）之间的纵向数据。体育活动已经引起了显着的关注，因为潜在的成功行动保护脑部健康和认知在老龄化人口中，但观察研究的经验证据是迄今为止的不确定。我们通过估计身体活动对认知的影响，解决许多偏差来源的文献，这些偏差源是通过先前未持续解决的。估计身体活动对认知效果的挑战是认知动态和由未观察的异质性，逆转因果关系和测量误差引起的身体活动的内生状性。为了解决这种内生成性，同时控制滞后的认知，我们提出了一种系统通用的时刻（GMM）估计方法，使用内源性解释变量作为仪器的滞后水平和差异，同时改变了固定效果。我们发现，每周至少一次和大力地积极活跃，分别将内存状态提高0.282和0.552个男性和女性的标准偏差。我们为不同的身体活动强度进行了不同的影响。 （c）2020 Elsevier B.v.保留所有权利。

著录项

  • 来源
    《Economics and human biology》 |2020年第12期|100933.1-100933.14|共14页
  • 作者

    Lenzen Sabrina; Gannon Brenda; Rose Christiern;

  • 作者单位

    Univ Queensland Sch Econ Fac Business Econ & Law St Lucia Qld 4072 Australia|Univ Queensland Fac Business Econ & Law Ctr Business & Econ Hlth St Lucia Qld 4072 Australia;

    Univ Queensland Sch Econ Fac Business Econ & Law St Lucia Qld 4072 Australia|Univ Queensland Fac Business Econ & Law Ctr Business & Econ Hlth St Lucia Qld 4072 Australia;

    Univ Queensland Sch Econ Fac Business Econ & Law St Lucia Qld 4072 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Physical activity; Cognition; Memory; Blundell-Bond; System-GMM;

    机译：身体活动;认知;记忆;BLUNDELL-BOND;系统GMM;

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