Evidence map›Paper›PMID 22826128›Full record

ArticleThe Journal of physiology2012

New perspectives concerning feedback influences on cardiorespiratory control during rhythmic exercise and on exercise performance.

Jerome A Dempsey

Open access · greenAbstract readLecture
In one paragraph

Article in The Journal of physiology, 2012. 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
4.6field-weighted citation impact, top 4% 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

26 citing papers in PubMed, 81 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Muscle sympathetic nerve activity during exercise.The journal of physiological sciences : JPS · 2019
    Review
  10. Review
  11. Article
  12. Review
  13. Critical Power: An Important Fatigue Threshold in Exercise Physiology.Medicine and science in sports and exercise · 2016
    Review
  14. Effect of exercise training on ventilatory efficiency in patients with heart disease: a review.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2016
    Review
  15. Review
  16. Effects of exercise training on neurovascular control and skeletal myopathy in systolic heart failure.American journal of physiology. Heart and circulatory physiology · 2015
    Review
  17. Review
  18. Review
  19. Pathophysiology of human ventilatory control.The European respiratory journal · 2014
    Review
  20. Review
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

1 author at 1 institution in 1 country.

Jerome A DempseyJohn Rankin Laboratory of Pulmonary Medicine, University of Wisconsin - Madison, 1300 University Ave, Room 4245 MSC, Madison, WI 53706-1532, USA. jdempsey@wisc.edu
University of Wisconsin–Madison · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The cardioaccelerator and ventilatory responses to rhythmic exercise in the human are commonly viewed as being mediated predominantly via feedforward 'central command' mechanisms, with contributions from locomotor muscle afferents to the sympathetically mediated pressor response. We have assessed the relative contributions of three types of feedback afferents on the cardiorespiratory response to voluntary, rhythmic exercise by inhibiting their normal 'tonic' activity in healthy animals and humans and in chronic heart failure. Transient inhibition of the carotid chemoreceptors during moderate intensity exercise reduced muscle sympathetic nerve activity (MSNA) and increased limb vascular conductance and blood flow; and reducing the normal level of respiratory muscle work during heavier intensity exercise increased limb vascular conductance and blood flow. These cardiorespiratory effects were prevented via ganglionic blockade and were enhanced in chronic heart failure and in hypoxia. Blockade of μ opioid sensitive locomotor muscle afferents, with preservation of central motor output via intrathecal fentanyl: (a) reduced the mean arterial blood pressure (MAP), heart rate and ventilatory responses to all steady state exercise intensities; and (b) during sustained high intensity exercise, reduced O(2) transport, increased central motor output and end-exercise muscle fatigue and reduced endurance performance. We propose that these three afferent reflexes - probably acting in concert with feedforward central command - contribute significantly to preserving O(2) transport to locomotor and to respiratory muscles during exercise. Locomotor muscle afferents also appear to provide feedback concerning the metabolic state of the muscle to influence central motor output, thereby limiting peripheral fatigue development.

Indexed as

Afferent PathwaysAnimalsAwards and PrizesCardiovascular Physiological PhenomenaCarotid BodyChemoreceptor CellsExerciseFeedback, PhysiologicalHumansMuscle, SkeletalPhysical EndurancePhysical ExertionPhysiologyRespiratory MusclesRespiratory Physiological Phenomena

Identifiers

PMID22826128
PMCPMC3473272
OpenAlexW2149304908

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.