Evidence map›Paper›PMID 27074273›Full record

ArticleBrazilian journal of cardiovascular surgery2016

High-Intensity Inspiratory Protocol Increases Heart Rate Variability in Myocardial Revascularization Patients.

Flavia Cristina Rossi Caruso, Rodrigo Polaquini Simões, Michel Silva Reis, Solange Guizilini, Vera Lucia dos Santos Alves, Valeria Papa, Ross Arena, Audrey Borghi-Silva

Registry-linked trialAbstract readEvaluation Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Brazilian journal of cardiovascular surgery, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03771573 (Physical Therapy in Rehabilitation Program on Cardiovascular Diseases), which is not on this map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing 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.

NCT03771573 nacompletednot on this mapstarted 2018, after this paper: background citation

Physical Therapy in Rehabilitation Program on Cardiovascular Diseases

TypeinterventionalSponsorUniversidade Metodista de PiracicabaRan2018 to 2020Enrolled20ConditionsCardiovascular DiseasesArmsPhysical exercise, monitoring
3 · Its place in the literature

Who cites it

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

  1. Pooled it
  2. Article
  3. 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

8 authors.

Flavia Cristina Rossi CarusoLaboratory of Cardiopulmonary Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.
Rodrigo Polaquini SimõesLaboratory of Cardiopulmonary Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.
Michel Silva ReisDepartment of Physiotherapy, Faculty of Medicine, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Solange GuiziliniDepartment of Sciences of Human Movement, Federal University of São Paulo, Santos, SP, Brazil.
Vera Lucia dos Santos AlvesFaculty of Medical Sciences at Santa Casa de São Paulo, São Paulo, SP, Brazil.
Valeria PapaHospital São Francisco of Ribeirão Preto, Ribeirão Preto, SP, Brazil.
Ross ArenaDepartment of Physical Therapy and Integrative Physiology Laboratory, College of Applied Health Sciences, University of Illinois Chicago, Chicago, IL, USA.
Audrey Borghi-SilvaLaboratory of Cardiopulmonary Physiotherapy, Federal University of São Carlos, São Carlos, SP, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo evaluate heart rate variability during an inspiratory muscle endurance protocol at three different load levels [30%, 60% and 80% of maximal inspiratory pressure], in patients who had previously undergone coronary artery bypass grafting.

methodsNineteen late postoperative myocardial revascularization patients participating in a cardiovascular rehabilitation program were studied. Maximal inspiratory pressure maneuvers were performed. An inspiratory muscle endurance protocol at 30%, 60% and 80% of maximal inspiratory pressure was applied for four minutes each, in random order. Heart rate and RR intervals were recorded and heart rate variability was analyzed by time (RMSSD-the mean of the standard deviations for all R-R intervals, and RMSM-root-mean square differences of successive R-R intervals) and frequency domains indices (high and low frequency) in normalized units. ANOVA for repeated measurements was used to compare heart rate variability indices and Student t-test was used to compare the maximal inspiratory pressure and maximal expiratory pressure values.

resultsHeart rate increased during performance of maximal respiratory pressures maneuvers, and the maximal inspiratory pressure and maximal expiratory pressure mean values were significantly lower than predicted values (P <0.05). RMSSD increased significantly at 80% in relation to rest and 30% of maximal inspiratory pressure and RMSM decreased at 30% and 60% of maximal inspiratory pressure in relation to rest (P <0.05). Additionally, there was significant and progressive decrease in low frequency and increase in high frequency at 30%, 60% and 80% of maximal inspiratory pressure in relation to the resting condition.

conclusionThese results suggest that respiratory muscle training at high intensities can promote greater parasympathetic activity and it may confer important benefits during a rehabilitation program in post-coronary artery bypass grafting.

Indexed as

AgedAnalysis of VarianceBreathing ExercisesCoronary Artery BypassHeart RateHumansInhalationMaleMiddle AgedMuscle StrengthMuscle Stretching ExercisesReference ValuesRespiratory Function TestsRespiratory MusclesRisk FactorsStatistics, Nonparametric

Identifiers

PMID27074273
PMCPMC5062699

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Registered trials

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.