Evidence map›Paper›PMID 23549897›Full record

ArticleAnnals of biomedical engineering2013

Effect of age and exercise on the viscoelastic properties of rat tail tendon.

Andrew S LaCroix, Sarah E Duenwald-Kuehl, Stacey Brickson, Tiffany L Akins, Gary Diffee, Judd Aiken, Ray Vanderby, Roderic S Lakes

Abstract read
In one paragraph

Article in Annals of biomedical engineering, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing 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

26 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Guidelines for ex vivo mechanical testing of tendon.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2023
    Review
  5. Modeling fatigue failure in soft tissue using a visco-hyperelastic model with discontinuous damage.Journal of the mechanical behavior of biomedical materials · 2023
    Article
  6. Article
  7. Review
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Review
  14. A review of methods to measure tendon dimensions.Journal of orthopaedic surgery and research · 2019
    Review
  15. Review
  16. Review
  17. Article
  18. Biology and mechano-response of tendon cells: Progress overview and perspectives.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2015
    Review
  19. Article
  20. Shear load transfer in high and low stress tendons.Journal of the mechanical behavior of biomedical materials · 2015
    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

8 authors.

Andrew S LaCroixDepartment of Biomedical Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
Sarah E Duenwald-Kuehl
Stacey Brickson
Tiffany L Akins
Gary Diffee
Judd Aiken
Ray Vanderby
Roderic S Lakes

Funding

Impact of Exercise on SarcopeniaR01AG030423 · NIA · UNIVERSITY OF ALBERTA · PI AIKEN, JUDD M. · 2009 to 2013
$2.1M
Noninvasive Measurement Of Strain And Mechanical Properties In Tendons/LigamentsR21EB008548 · NIBIB · UNIVERSITY OF WISCONSIN-MADISON · PI VANDERBY, RAY · 2009 to 2010
$398k
NIA NIH HHS AG030423NIA NIH HHS R01 AG030423NIBIB NIH HHS EB008548NIBIB NIH HHS R21 EB008548
6 · The paper itself

Abstract

Tendon mechanical properties are thought to degrade during aging but improve with exercise. A remaining question is whether exercise in aged animals provides sufficient regenerative, systemic stimulus to restore younger mechanical behaviors. Herein we address that question with tail tendons from aged and exercised rats, which would be subject to systemic effects but not direct loading from the exercise regimen. Twenty-four month old rats underwent one of three treadmill exercise training protocols for 12 months: sedentary (walking at 0° incline for 5 min/day), moderate (running at 0° incline for 30 min/day), or high (running at 4° incline for 30 min/day). A group of 9 month old rats were used to provide an adult control, while a group of 3 month old rats provided a young control. Tendons were harvested at sacrifice and mechanically tested. Results show significant age-dependent differences in modulus, ultimate stress, relaxation rate, and percent relaxation. Relaxation rate was strain-dependent, consistent with nonlinear superposition or Schapery models but not with quasilinear viscoelasticity (QLV). Trends in exercise data suggest that with exercise, tendons assume the elastic character of younger rats (lower elastic modulus and ultimate stress).

Indexed as

AgingAnimalsElasticityMalePhysical Conditioning, AnimalRatsTailTendonsViscosity

Identifiers

PMID23549897
PMCPMC3746813

What OpenQuestion holds

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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.