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Acute Effects of Inspiratory Muscle Exercise on Glucose Level and Glucose Variability in Patients With Type 2 Diabetes.

13. november 2014 opdateret af: Hospital de Clinicas de Porto Alegre
Type 2 diabetes is associated with respiratory muscle weakness and autonomic neuropathy. The exercise of inspiratory muscles has been investigating in various clinical situations and may cause similar benefits as the conventional exercises. The assessment of glucose variability has been used as an alternative tool to evaluate the others mechanisms than the absolute values of glucose levels, special during the exercise. However, the effect of inspiratory muscle exercise on glucose levels and glucose variability is not clear yet. The aim of the proposed research is to evaluate the acute effects of inspiratory muscle exercise using a high load of 60% of MIP on glucose levels and glucose variability in patients with type 2 diabetes.

Studieoversigt

Status

Ukendt

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

High-intensity exercise of inspiratory muscle was able to reduce glucose levels in previous studies, but the mechanisms underlying this reduction remain largely unknown. The present study will investigate this phenomenon, and whether confirmed, the inspiratory muscle loading would be a new approach for lowering glucose levels and glucose variability in type 2 diabetes.

The subjects with type 2 diabetes will be recruited from the ambulatory of the Hospital de Clinicas de Porto Alegre. The patients will be randomized to inspiratory muscle exercise with a high intensity load (MIP 60%) or to exercise with a load placebo (MIP 2%), on two different days. The subjects will come in the laboratory for three days consecutively during 2 weeks. On the first day will be placed the CGMS device. On the second day will be the controlled ventilation protocol with subsequently inspiratory muscle exercise, using 2% or 60% of MIP as randomized a priori. On the third day the CGMS will be removed. Individuals who are using beta-blockers will be advised to withdraw the medication 24 hours before the protocols. During all protocols will be recorded the continuous blood pressure to assess heart rate and blood pressure variabilities, both time and frequency domains will be analyzed. Also, the calf blood flow, inspiratory pressure, end-tidal carbon dioxide and oxygen saturation will be taking.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

14

Fase

  • Ikke anvendelig

Kontakter og lokationer

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Studiekontakt

Undersøgelse Kontakt Backup

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

30 år og ældre (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Type 2 diabetes;
  • HbA1c from 7,5 to 10%;

Exclusion Criteria:

  • Subjects taking insulin;
  • Pregnant women;
  • Subjects taking betablocker only
  • Documented arrythmia
  • Documented fibrillation
  • GFR<30
  • Documented pulmonary disease or asthma,
  • Current smoking;
  • Varicose vein problems;
  • Musculoskeletal disease.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Tildeling: Randomiseret
  • Interventionel model: Crossover opgave
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Inspiratory muscle exercise
Patients will exercise the inspiratory muscle using a load of 60% of maximum inspiratory mouth pressure (MIP 60%).
For inspiratory muscle exercise patients will breathe with a high load of 60% of MIP using a respiratory frequency of 15 breaths min and a prolonged duty cycle (TI/TTOT =0.7) until task failure. The blood flow, conductance and resistance arterial will be measured in the calf using plethysmography device. Arterial blood pressure and heart rate will be monitored continuously at the finger on a beat-by-beat basis by biopac equipment and the glucose levels will be captured by continuous glucose monitoring system.
Placebo komparator: Inspiratory muscle exercise placebo
Patients will exercise the inspiratory muscle using a load of 2% of maximum inspiratory mouth pressure (MIP 2%).
For inspiratory muscle exercise patients will breathe with a very low load of 2% of MIP using a respiratory frequency of 15 breaths min and a prolonged duty cycle (TI/TTOT =0.7) for 10 minute. The blood flow, conductance and resistance arterial will be measured in the calf using plethysmography device. Arterial blood pressure and heart rate will be monitored continuously at the finger on a beat-by-beat basis by biopac equipment and the glucose levels will be captured by using the continuous glucose monitoring system.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Glucose level
Tidsramme: 1 day (A session of inspiratory muscle exercise)
The glucose level will be assessed by continuous glucose monitoring (CGMS) before and after exercise.
1 day (A session of inspiratory muscle exercise)

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Glucose variability
Tidsramme: 3 days
The variability of the glucose will be assessed by continuous glucose monitoring (CGMS) 24 hours before exercise, during the protocol and 24 hours after exercise.
3 days
Autonomic control
Tidsramme: 1 day (A session of inspiratory muscle exercise)
The autonomic control will be evaluated in the time domain and frequency through the Biopac.
1 day (A session of inspiratory muscle exercise)

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Beatriz Schaan, PhD, Hospital de Clinicas de Porto Alegre

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. november 2014

Primær færdiggørelse (Forventet)

1. december 2015

Studieafslutning (Forventet)

1. marts 2016

Datoer for studieregistrering

Først indsendt

13. november 2014

Først indsendt, der opfyldte QC-kriterier

13. november 2014

Først opslået (Skøn)

17. november 2014

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

17. november 2014

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

13. november 2014

Sidst verificeret

1. november 2014

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 14-0194

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .