Evidence map›Paper›PMID 16622703›Full record

ArticlePflugers Archiv : European journal of physiology2006

Single skeletal muscle fiber behavior after a quick stretch in young and older men: a possible explanation of the relative preservation of eccentric force in old age.

Julien Ochala, David J Dorer, Walter R Frontera, Lisa S Krivickas

Erratum issuedAbstract readControlled Clinical Trial
PubMed Publisher
In one paragraph

Article in Pflugers Archiv : European journal of physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

20 citing papers in PubMed, 48 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Improved single muscle fiber quality in the oldest-old.Journal of applied physiology (Bethesda, Md. : 1985) · 2016
    Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Muscle torque preservation and physical activity in individuals with stroke.Medicine and science in sports and exercise · 2009
    Article
  20. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

4 authors at 3 institutions in 2 countries.

Julien OchalaMuscle Cell Physiology Laboratory, Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital and Harvard Medical School, Boston, MA, USA. julien.ochala@neurofys.uu.se
David J Dorer
Walter R Frontera
Lisa S Krivickas
Spaulding Rehabilitation Hospital · USHarvard University · USMassachusetts General Hospital · US

Funding

LOWER EXTREMITY MUSCLE POWER AND FUNCTION IN THE ELDERLYR01AG018844 · NIA · TUFTS UNIVERSITY BOSTON · PI FIELDING, ROGER A. · 2001 to 2009
$3.0M
NIA NIH HHS AG18844-01
6 · The paper itself

Abstract

The origins of the smaller age-related decrease in eccentric force compared to isometric and concentric conditions in vivo remain unclear. Could this originate from contractile elements of muscle cells? The main intent of the current investigation was to assess the force behavior of muscle cells with aging, during lengthening. Chemically skinned single muscle fibers (n=235) from m. vastus lateralis of six young (mean age 31.6 years) and six older men (mean age 66.1 years) were maximally activated with pCa 4.5 at 15 degrees C. Maximal isometric force and cross-sectional area were measured allowing the calculation of the tension (T (0)). A quick stretch (2 nm per half-sarcomere length) was applied and caused an immediate increase in tension followed by a decrease and a secondary delayed and transient rise in tension (phase 3); finally, the tension recovered a steady state value (phase 4). The tension enhancements during phase 3 (DeltaT (3)) and phase 4 (DeltaT (4)) were evaluated. The myosin heavy-chain isoform composition of each single fiber was determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. DeltaT (3) and DeltaT (4) were preserved in older men for both type I and IIa fibers despite a reduction in T (0). Therefore, the age-related preservation of the tension increments after a quick stretch in single muscle fibers could explain in part the smaller decrease in force during eccentric contractions compared to isometric and concentric conditions in vivo with aging usually observed.

Indexed as

AdultAgedAge FactorsAgingCells, CulturedHumansMaleMiddle AgedModels, BiologicalMuscle ContractionMuscle Fibers, SkeletalMuscle, SkeletalPhysical StimulationStress, Mechanical

Identifiers

PMID16622703
OpenAlexW2086845347

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.