Evidence map›Paper›PMID 27784689›Full record

ArticleAmerican journal of physiology. Regulatory, integrative and comparative physiology2016

Central vs. peripheral determinants of sympathetic neural recruitment: insights from static handgrip exercise and postexercise circulatory occlusion.

Mark B Badrov, T Dylan Olver, J Kevin Shoemaker

Abstract read
In one paragraph

Article in American journal of physiology. Regulatory, integrative and comparative physiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing 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

22 citing papers in PubMed.

  1. Trial
  2. Prognostic value of exercise blood pressure: role of fitness and exercise training.American journal of physiology. Heart and circulatory physiology · 2026
    Review
  3. Central αThe Journal of physiology · 2024
    Article
  4. Article
  5. Review
  6. Autonomic cardiovascular control during exercise.American journal of physiology. Heart and circulatory physiology · 2023
    Review
  7. Article
  8. Impaired sympathetic neural recruitment during exercise pressor reflex activation in women with post-traumatic stress disorder.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2022
    Article
  9. The impact of ageing and sex on sympathetic neurocirculatory regulation.Seminars in cell & developmental biology · 2021
    Review
  10. Article
  11. Article
  12. Sympathetic neural recruitment strategies following acute intermittent hypoxia in humans.American journal of physiology. Regulatory, integrative and comparative physiology · 2020
    Article
  13. Article
  14. Asynchronous action potential discharge in human muscle sympathetic nerve activity.American journal of physiology. Heart and circulatory physiology · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Recruitment strategies in efferent sympathetic nerve activity.Clinical autonomic research : official journal of the Clinical Autonomic Research Society · 2017
    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

3 authors.

Mark B BadrovSchool of Kinesiology, Western University, London, Ontario, Canada.
T Dylan OlverSchool of Kinesiology, Western University, London, Ontario, Canada.
J Kevin ShoemakerSchool of Kinesiology, Western University, London, Ontario, Canada; kshoemak@uwo.ca.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sympathetic outflow is modified during acute homeostatic stress through increased firing of low-threshold axons, recruitment of latent axons, and synaptic delay modifications. However, the role of central mechanisms versus peripheral reflex control over sympathetic recruitment remains unknown. Here, we examined sympathetic discharge patterns during fatiguing static handgrip (SHG) exercise and postexercise circulatory occlusion (PECO) to study the central vs. peripheral reflex elements of sympathetic neural coding. Muscle sympathetic nerve activity (MSNA; microneurography) was measured in six males (25 ± 3 yr) at baseline (3 min) and during 5 min of SHG exercise completed at 20% maximal voluntary contraction. Isolation of the peripheral metaboreflex component was achieved by PECO for 3 min. Action potential (AP) patterns were studied using wavelet-based methodology. Compared with baseline, total MSNA increased by minute 3 of SHG, remaining elevated throughout the duration of exercise and PECO (all P < 0.05). The AP content per burst increased above baseline by minute 4 of SHG (Δ4 ± 2), remaining elevated at minute 5 (Δ6 ± 4) and PECO (Δ4 ± 4; all P < 0.05). Similarly, total AP clusters increased by minute 4 of SHG (Δ5 ± 5) and remained elevated at minute 5 (Δ6 ± 3) and PECO (Δ7 ± 5; all P < 0.01), indicating recruitment of latent subpopulations. Finally, the AP cluster size-latency profile was shifted downward during minutes 4 (-32 ± 22 ms) and 5 (-49 ± 17 ms; both P < 0.05) of SHG but was not different than baseline during PECO (P > 0.05). Our findings suggest that central perceptual factors play a specific role in the synaptic delay aspect of sympathetic discharge timing, whereas peripheral reflex mechanisms affect recruitment of latent axons.

Indexed as

AdultBlood Flow VelocityExerciseHand StrengthHumansMaleMotor NeuronsMuscle FatigueMuscle, SkeletalRecruitment, NeurophysiologicalSympathetic Nervous Systemaction potentialexercise pressor reflexmetaboreflexmicroneurographysympathetic nerve activity

Identifiers

PMID27784689
PMCPMC5256973

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.