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Vol. 23. Num. 1.01 January 2019
Pages 1-76
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Vol. 23. Num. 1.01 January 2019
Pages 1-76
Original Research
DOI: 10.1016/j.bjpt.2018.06.002
Dose–response effects of years of self-reported physical activity on old females’ motor and cognitive function
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Juliana Bayeux Dascala,
Corresponding author
jbdascal@uel.br

Corresponding author at: Departamento de Educação Física, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Pr 445 km380, Brazil.
, Lianne Maria Jantien Sandersb, Edson Gonsales da Cruz Filhoa, Tibor Hortobágyib
a Physical Education Department, Universidade Estadual de Londrina (UEL), Londrina, PR, Brazil
b Center for Human Movement Sciences, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
Highlights

  • Different types of physical activity are strongly associated with motor and cognitive improvements.

  • There is a dose–response relationship between physical activity and physiological improvements.

  • An average of 6.2 years of physical activity had favorable effects on motor functions.

  • An active lifestyle in adulthood is likely to prevent aging-related motor and cognitive decline.

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Tables (2)
Table 1. Distribution of physical activities for the old and young sub-groups.
Table 2. Demographic, cognitive, and physical function characteristics of groups formed based on years of physical activity experience.
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Abstract
Background

There is a poor understanding of the dose–response relationship between years of physical activity and motor and cognitive function. We determined the dose–response effects of physical activity duration in years on motor and cognitive function and their relationship in healthy old females.

Objectives

To determine the dose-effects of physical activity duration in years on motor and cognitive function and their relationship in health aging adults.

Methods

We conducted a retrospective observational study with 201 old (age 69 years; SD=5.9) and 12 young (mean age 21 years; SD=1.9) females, with sub-groups based on number of years of self-reported physical activity. Aerobic capacity, mobility, functional reach, standing balance, global cognition, episodic memory, executive function, and processing speed were assessed with performance-based tests. We analyzed sub-group differences quantitatively and qualitatively and performed regression and mediation analyses to determine predictors and mediators of physical activity effects.

Results

Based on physical activity of minimal (0.3 y, n=29), short (2.4 y, n=77), moderate (6.2 y, n=36) and long (16.6 y, n=59) duration, physical activity for at least 2.4 years affords old adults benefits in body mass index with peak dose-effects present in aerobic capacity and mobility at 6.2 years without additional benefits after 16.6 years of physical activity. Physical activity for any duration had no effects on functional reach, balance, executive function, episodic memory, and processing speed. Although weakly mobility predicted global cognition and executive function.

Conclusion

Performing physical activity up to 6.2 years on average had favorable effects on body mass index, aerobic capacity and mobility. The data strengthen current recommendations for an active lifestyle in adulthood to prevent aging-related motor and cognitive decline.

Keywords:
Executive function
Episodic memory
Processing speed
Aerobic fitness
Mobility
Balance

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