Evidence map›Paper›PMID 18787091›Full record

ArticleJournal of applied physiology (Bethesda, Md. : 1985)2008

Somatosensory feedback from the limbs exerts inhibitory influences on central neural drive during whole body endurance exercise.

Markus Amann, Lester T Proctor, Joshua J Sebranek, Marlowe W Eldridge, David F Pegelow, Jerome A Dempsey

Abstract read
In one paragraph

Article in Journal of applied physiology (Bethesda, Md. : 1985), 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 1 pooled it
–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

63 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  5. Ischemic preconditioning reduces hemodynamic response during metaboreflex activation.American journal of physiology. Regulatory, integrative and comparative physiology · 2016
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  6. Repeated sprint training in normobaric hypoxia.British journal of sports medicine · 2013
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  11. Article
  12. Obligatory neural feedback control of exercise cardiorespiratory function and performance.Journal of applied physiology (Bethesda, Md. : 1985) · 2025
    Review
  13. Review
  14. Review
  15. Article
  16. Autonomic cardiovascular control during exercise.American journal of physiology. Heart and circulatory physiology · 2023
    Review
  17. Article
  18. Review
  19. Review
  20. Article

3 more citing papers are in PubMed but not listed here.

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

6 authors.

Markus AmannJohn Rankin Laboratory of Pulmonary Medicine, University of Wisconsin-Madison Medical School, Madison, Wisconsin, USA. markus.amann@physiol.biol.ethz.ch
Lester T Proctor
Joshua J Sebranek
Marlowe W Eldridge
David F Pegelow
Jerome A Dempsey

Funding

HUMAN VENTILATORY ADAPTIONR01HL015469 · NHLBI · UNIVERSITY OF WISCONSIN-MADISON · PI DEMPSEY, JEROME A · 1985 to 2011
$3.7M
Comprehensive Characterization of Intrapulmonary Arteriovenous Pathways in HealthR01HL086897 · NHLBI · UNIVERSITY OF WISCONSIN-MADISON · PI ELDRIDGE, MARLOWE · 2008 to 2012
$1.8M
NHLBI NIH HHS R01 HL086897NHLBI NIH HHS R01 HL-15469
6 · The paper itself

Abstract

We investigated whether somatosensory feedback from contracting limb muscles exerts an inhibitory influence on the determination of central command during closed-loop cycling exercise in which the subject voluntarily determines his second-by-second central motor drive. Eight trained cyclists performed two 5-km time trials either without (5K(Ctrl)) or with lumbar epidural anesthesia (5K(Epi); 24 ml of 0.5% lidocaine, vertebral interspace L(3)-L(4)). Percent voluntary quadriceps muscle activation was determined at rest using a superimposed twitch technique. Epidural lidocaine reduced pretime trial maximal voluntary quadriceps strength (553 +/- 45 N) by 22 +/- 3%. Percent voluntary quadriceps activation was also reduced from 97 +/- 1% to 81 +/- 3% via epidural lidocaine, and this was unchanged following the 5K(Epi), indicating the presence of a sustained level of neural impairment throughout the trial. Power output was reduced by 9 +/- 2% throughout the race (P < 0.05). We found three types of significant effects of epidural lidocaine that supported a substantial role for somatosensory feedback from the exercising limbs as a determinant of central command throughout high-intensity closed-loop cycling exercise: 1) significantly increased relative integrated EMG of the vastus lateralis; 2) similar pedal forces despite the reduced number of fast-twitch muscle fibers available for activation; 3) and increased ventilation out of proportion to a reduced carbon dioxide production and heart rate and increased blood pressure out of proportion to power output and oxygen consumption. These findings demonstrate the inhibitory influence of somatosensory feedback from contracting locomotor muscles on the conscious and/or subconscious determination of the magnitude of central motor drive during high intensity closed-loop endurance exercise.

Indexed as

AdultAfferent PathwaysAlgorithmsAnesthesia, EpiduralAnesthetics, LocalBicyclingCentral Nervous SystemElectromyographyExerciseExtremitiesFeedbackHumansLidocaineMaleMuscle, SkeletalNeurons, AfferentAnesthetics, LocalLidocaine

Identifiers

PMID18787091
PMCPMC2612475

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.