- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT02206126
Weight Loss and Obstructive Sleep Apnea
30. juli 2014 opdateret af: Antonio Felipe Sanjuliani, Rio de Janeiro State University
Effects of Energy Restriction on Sleep Apnea, Sympathetic Activity, Oxidative Stress, Inflammatory Biomarkers, Endothelial Function, Body Adiposity, Metabolic Profile and Blood Pressure in Obese Patients With Obstructive Sleep Apnea
The purpose of this study is to evaluate the effects of moderate energy restriction on the body adiposity, severity of OSA, blood pressure, sympathetic activity, oxidative stress, inflammatory biomarkers, metabolic profile and endothelial function in obese patients with OSA.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Introduction: Nutritional intervention for weight loss is one of the treatment options for obstructive sleep apnea (OSA) in patients with excess body adiposity.
However, the effects of moderate energy restriction, recommended by current guidelines for the treatment of obesity, on OSA are not yet known.
Objective: To evaluate the effects of moderate energy restriction on the body adiposity; severity of OSA; blood pressure; sympathetic activity; oxidative stress; inflammatory biomarkers; metabolic profile and endothelial function in obese patients with OSA.
Methods: A 16-week randomized clinical trial, involving 21 subjects with obesity (grade I or II), aged 20-55 years and presenting an apnea/hipopnea index (AHI) > 5 events/h.
Participants were randomized into 2 groups: 11 in the energy restriction group (ERG) and 10 in the control group (CG).
The ERG was instructed to follow an energy-restricted diet (-800 kcal/day) and the CG was advised not to change their food intake.
At the beginning and at the end of the study, participants underwent evaluation of: OSA with the equipment Watch- PAT200® including the determination of the following parameters of OSA severity: AHI, minimum O2 saturation, number of O2 desaturations >4%; body adiposity (weight, %body fat and circumferences of waist, hip and neck); blood pressure (BP); sympathetic nervous system activity (plasma levels of catecholamines); inflammatory biomarkers (c-reactive protein and adiponectin); oxidative stress (malondialdehyde); metabolism of glucose (glucose, insulin and HOMA-IR) and lipids (total cholesterol and fractions and triglycerides); and endothelial function (index of reactive hyperemia evaluated by Endo - PAT 2000® and cellular adhesion molecules).
The statistical analysis was performed with the software STATA v. 10.
The level of statistical significance was p < 0.05.
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
21
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
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Rio de Janeiro, Brasilien, 20.551-030
- Discipline of Clinical and Experimental Pathophysiology, CLINEX
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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
20 år til 55 år (Voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
- age between 20-55 years
- body mass index (BMI) ≥ 30 kg/m2 and < 40 kg/m2
Exclusion Criteria:
- smoking
- Use of dietary supplements
- Use of medications that could interfere in body weight, metabolic profile and blood pressure
- Use of permanent pacemaker; use of α-adrenergic blocking agents
- Recent changes (within previous 6 months) in body weight (> 3 kg), in dietary intake and in intensity or frequency of physical exercise
- Diagnosis of diabetes mellitus, hypertension, dyslipidemia (with drug treatment) and kidney disease
- Clinical history of thyroid dysfunction, angina pectoris, peripheral vascular disease, peripheral neuropathy, heart failure, liver failure, chronic pulmonary disease, gastroesophageal reflux disease, myocardial infarction and stroke; finger deformity that prevents the proper use of the sensors that are necessary to evaluate OSA and endothelial function; and previous bilateral cervical-thoracic sympathectomy
- Pregnant or lactating women were not allowed into the study
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
---|---|
Eksperimentel: Energy restriction group
The energy restriction group was instructed to follow an energy-restricted diet (-800 kcal/day).
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The energy restriction group was instructed to follow an energy-restricted diet (-800 kcal/day).
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Ingen indgriben: Control group
The control group was advised not to change their food intake.
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
---|---|
Apnea/hipopnea index
Tidsramme: 16 weeks
|
16 weeks
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Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
---|---|---|
Blodtryk
Tidsramme: 16 uger
|
16 uger
|
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Sympathetic activity
Tidsramme: 16 weeks
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Plasma levels of catecholamines
|
16 weeks
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Oxidative stress
Tidsramme: 16 weeks
|
Serum levels of malondialdehyde
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16 weeks
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Inflammatory biomarkers
Tidsramme: 16 weeks
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Circulating levels of high-sensitivity C reactive protein and adiponectin
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16 weeks
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Metabolic profile
Tidsramme: 16 weeks
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Fasting plasma glucose, insulin, total cholesterol, HDL-cholesterol, LDL-cholesterol and triglycerides
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16 weeks
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Endothelial function
Tidsramme: 16 weeks
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Circulating levels of cellular adhesion molecules (intercellular adhesion molecule 1 and P-selectin). Endothelial function was also evaluated by the PAT method, using Endo-PAT 2000®. |
16 weeks
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Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Sponsor
Efterforskere
- Ledende efterforsker: Antonio Felipe Sanjuliani, Dr., Rio de Janeiro State University
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. marts 2012
Primær færdiggørelse (Faktiske)
1. oktober 2013
Studieafslutning (Faktiske)
1. oktober 2013
Datoer for studieregistrering
Først indsendt
27. juni 2014
Først indsendt, der opfyldte QC-kriterier
30. juli 2014
Først opslået (Skøn)
1. august 2014
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
1. august 2014
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
30. juli 2014
Sidst verificeret
1. juli 2014
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- CLINEX05
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 .
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