Evidence map›Paper›PMID 20857137›Full record

Trial reportEuropean journal of applied physiology2011

Speeding of VO2 kinetics in response to endurance-training in older and young women.

Juan M Murias, John M Kowalchuk, Donald H Paterson

Abstract readRandomized Controlled Trial
PubMed Publisher
In one paragraph

Trial report in European journal of applied physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
15.1field-weighted citation impact, top 2% 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

30 citing papers in PubMed, 70 citations in OpenAlex.

  1. Exercise training-induced speeding ofEuropean journal of applied physiology · 2025
    Trial
  2. Aerobic capacity andEuropean journal of applied physiology · 2023
    Trial
  3. VOLupus · 2025
    Article
  4. Frontiers in physiology · 2025
    Article
  5. Article
  6. Review
  7. Interaction of Factors Determining Critical Power.Sports medicine (Auckland, N.Z.) · 2023
    Review
  8. Article
  9. Longitudinal alterations of pulmonaryFrontiers in sports and active living · 2022
    Article
  10. Association betweenEuropean journal of applied physiology · 2021
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Fitness Level and Not AgingFrontiers in physiology · 2018
    Article
  20. The effects of short work vs. longer work periods within intermittent exercise on V̇oJournal of applied physiology (Bethesda, Md. : 1985) · 2017
    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

3 authors at 1 institution in 1 country.

Juan M MuriasCanadian Centre for Activity and Aging, University of Western Ontario, London, Canada.
John M Kowalchuk
Donald H Paterson
Western University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The goal of this study was to examine the time-course of changes in oxygen uptake kinetics (τVO(2p)) during step-transitions from 20 W to moderate-intensity cycling in response to endurance-training in older (O) and young (Y) women. Six O (69 ± 7 years) and 8 Y (25 ± 5 years) were tested pre-training, and at 3, 6, 9, and 12 weeks of training. VO(2p) was measured breath-by-breath using a mass spectrometer. Changes in deoxygenated-hemoglobin concentration of the vastus lateralis (∆[HHb]) were measured by near-infrared spectroscopy in Y (but this was not possible in O). VO(2p) and ∆[HHb] were modeled with a mono-exponential. Training was performed on a cycle-ergometer three times per week for 45 min at ~70% of VO(2 peak). Pre-training τVO(2p) was greater (p < 0.05) in O (55 ± 16 s) than Y (31 ± 8 s). After 3 weeks training, τVO(2p) decreased (p < 0.05) in both O (35 ± 12 s) and Y (22 ± 4 s). A pre-training "overshoot" in the normalized ∆[HHb]/VO(2p) ratio relative to the subsequent steady-state level (interpreted as a mismatch of local O(2) delivery to muscle VO(2)) was observed in Y. Three weeks of training resulted in that "overshoot" being abolished. Thus there was a training-induced speeding of VO(2) kinetics in O and Y. In the Y this appeared to be the result of improved matching of local O(2) delivery to muscle VO(2). In O, inadequate systemic O(2) distribution (as indirectly expressed by the arterial-venous O(2) difference/VO(2p) ratio) seemed to play a role for the initial slower rate of adjustment in VO(2p).

Indexed as

AccelerationPhysical Education and TrainingAdultAgedAge FactorsExercise TestFemaleHeart RateHumansKineticsMiddle AgedMuscle, SkeletalOxygenOxygen ConsumptionPhysical EndurancePulmonary VentilationOxygen

Identifiers

PMID20857137
OpenAlexW2050213087

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.