Related Experiment Video
Updated: Sep 14, 2025

Orienteering as a Tool for Cognitive Research: An Implementation Guide
Published on: November 29, 2024
Physical activity mediates age differences in cognition among Tsimane forager-horticulturalists
Phoebe Imms1, Nikhil N Chaudhari1,2, Daniel Cummings3,4
1Ethel Percy Andrus Gerontology Center, Leonard Davis School of Gerontology, University of Southern California, Los Angeles, California, United States.
Physical activity protects cognition in aging Tsimane Amazonian populations. Higher activity in Tsimane males mediates age-related cognitive decline via brain volume, while Tsimane females show direct mediation by physical activity.
Area of Science:
- Neuroscience
- Anthropology
- Gerontology
Background:
- The Tsimane and Moseten people of the Bolivian Amazon display high physical activity levels.
- These populations exhibit low rates of cognitive impairment and brain atrophy with aging.
Purpose of the Study:
- To investigate the mediating role of physical activity in the relationship between age and cognition.
- To examine how brain volume (BV) influences the association between age, physical activity, and cognition.
Main Methods:
- Structural equation modeling was employed to analyze the data.
- The study examined mediation pathways involving physical activity, age, cognition, and brain volume.
Main Results:
- Tsimane individuals exhibited significantly higher physical activity levels compared to Moseten individuals.
- Physical activity significantly mediated the age-cognition relationship in Tsimane males and females, but not in the Moseten population.
Conclusions:
- Physical activity mediates cognitive aging differently across sexes and populations.
- In Tsimane males, physical activity mediates cognition via brain volume, while in Tsimane females, it directly impacts cognition.
- Studying non-industrialized populations offers insights into lifestyle factors influencing brain health and aging.
More Related Videos
10:13Assessment of Age-related Changes in Cognitive Functions Using EmoCogMeter, a Novel Tablet-computer Based Approach
Published on: February 14, 2014
07:01Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
Published on: September 20, 2020
Related Concept Videos
Cognitive Development During Adulthood
Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
The Effect of Aging on Tissues
Environmental Influences on Intelligence
Biological Influences on Intelligence
Language and Cognition