Evidence map›Paper›PMID 21538650›Full record

ArticleAmerican journal of human biology : the official journal of the Human Biology Council

Physical activity in an indigenous Ecuadorian forager-horticulturalist population as measured using accelerometry.

Felicia C Madimenos, J Josh Snodgrass, Aaron D Blackwell, Melissa A Liebert, Lawrence S Sugiyama

Open access · greenAbstract read
In one paragraph

Article in American journal of human biology : the official journal of the Human Biology Council. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.1field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 45 citations in OpenAlex.

  1. The Shuar Health and Life History Project: Overview at 20 Years and Introduction to the Special Issue.American journal of human biology : the official journal of the Human Biology Council · 2026
    Article
  2. Article
  3. Physical Activity and Pregnancy Norms Among Daasanach Semi-Nomadic Pastoralist Women in Northern Kenya.American journal of human biology : the official journal of the Human Biology Council · 2025
    Article
  4. Article
  5. Article
  6. Lifestyle and patterns of physical activity in Hadza foragers.American journal of biological anthropology · 2023
    Article
  7. Review
  8. Article
  9. Review
  10. Pathogen disgust sensitivity protects against infection in a high pathogen environment.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  11. Ageing and physical function in East African foragers and pastoralists.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Article
  12. Article
  13. Article
  14. Age-independent increases in male salivary testosterone during horticultural activity among Tsimane forager-farmers.Evolution and human behavior : official journal of the Human Behavior and Evolution Society · 2013
    Article
  15. Article
  16. Patterns of senescence in human cardiovascular fitness: VO2 max in subsistence and industrialized populations.American journal of human biology : the official journal of the Human Biology Council
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Felicia C MadimenosDepartment of Anthropology, University of Oregon, Eugene, 97403, USA. fmadimen@uoregon.edu
J Josh Snodgrass
Aaron D Blackwell
Melissa A Liebert
Lawrence S Sugiyama
Decision Sciences (United States) · USUniversity of Oregon · USUniversity of California, Santa Barbara · US

Funding

NIH Director's Pioneer Award (RMI)DP1OD000516 · OD · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI COSMIDES, LEDA · 2005 to 2009
$3.6M
NIH HHS 5DP1OD000516-5NIH HHS DP1 OD000516
6 · The paper itself

Abstract

objectiveMinimal information on physical activity is available for non-Western populations undergoing the transition to a market economy. This is unfortunate given the importance of these data for understanding health issues such as the global obesity epidemic. We consider the utility of using accelerometry technology to examine activity patterns and energy use regulation among indigenous Shuar, an Ecuadorian forager-horticulturalist population undergoing economic and lifestyle change. We investigate sex differences in Shuar activity patterns and the effects of reproductive status on activity. Finally, we discuss the potential of accelerometry use in human biology research.

methodsPhysical activity levels were measured using Actical accelerometers in 49 indigenous Shuar adults (23 males, 26 females) from a rural Ecuadorian community. Female participants were in various reproductive states including pregnant, lactating, and nonpregnant/nonlactating.

resultsActivity counts (AC), activity energy expenditure (AEE), and physical activity levels (PAL) were significantly higher (P < 0.05) in males than females. Significant differences in energy expenditure were found among pregnant or lactating females and males with pregnant or lactating partners (P < 0.001). Males with pregnant or lactating partners also had significantly higher activity levels than did other men (P < 0.01).

conclusionsShuar activity levels are relatively low compared to other non-Western populations. Despite increasing market integration, pregnant and lactating females seem to be adopting a strategy noted in other subsistence populations where male participation in subsistence activities increases to compensate for their partners' elevated reproductive costs. Despite certain limitations, use of accelerometry in human biology research shows promise.

Indexed as

AccelerationMotor ActivityAdolescentAdultAgedAgricultureAnthropology, CulturalBasal MetabolismConfidence IntervalsEcuadorEnergy MetabolismFemaleHumansLife StyleMaleMiddle Aged

Identifiers

PMID21538650
PMCPMC3110644
OpenAlexW2105778580

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.