Evidence map›Paper›PMID 21849317›Full record

ArticleProceedings. Biological sciences2012

Understanding sex differences in the cost of terrestrial locomotion.

John J Lees, Robert L Nudds, Lars P Folkow, Karl-Arne Stokkan, Jonathan R Codd

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2012. 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
–field-weighted citation impact
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.

  1. Article
  2. Review
  3. Fossil evidence sheds light on sexual selection during the early evolution of birds.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  4. Sexual selection and the evolution of dinosaur flight.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Sex-specific thermal sensitivities of performance and activity in the asian house gecko, Hemidactylus frenatus.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2018
    Article
  13. Article
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

John J LeesFaculty of Life Sciences, University of Manchester, Manchester M13 9PT, UK.
Robert L Nudds
Lars P Folkow
Karl-Arne Stokkan
Jonathan R Codd

Funding

Biotechnology and Biological Sciences Research Council BB/G011338/1Biotechnology and Biological Sciences Research Council G01138/1
6 · The paper itself

Abstract

Little is known regarding the physiological consequences of the behavioural and morphological differences that result from sexual selection in birds. Male and female Svalbard rock ptarmigans (Lagopus muta hyperborea) exhibit distinctive behavioural differences during the breeding season. In particular, males continuously compete for and defend territories in order to breed successfully, placing large demands on their locomotor system. Here, we demonstrate that male birds have improved locomotor performance compared with females, showing both a lower cost of locomotion (CoL) and a higher top speed. We propose that the observed sex differences in locomotor capability may be due to sexual selection for improved male performance. While the mechanisms underlying these energetic differences are unclear, future studies should be wary when pooling male and female data.

Indexed as

LocomotionAnimalsBehavior, AnimalBiomechanical PhenomenaFemaleGalliformesMaleMating Preference, AnimalSex CharacteristicsSex Factors

Identifiers

PMID21849317
PMCPMC3248738

What OpenQuestion holds

Textmetadata
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.