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High-Intensity Interval Training in Low Versus Normal Oxygen: Effects on Body Fat and Gut Health in Adults Aged 50-75 With Overweight or Obesity (HYPOXFAT) (HYPOXFAT)

27. august 2026 opdateret af: BOISSEAU Nathalie, Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques

High-intensity Interval Training Under Hypoxic Versus Normoxic Conditions: Effects on Fat Mass Loss and Gut Microbiota in Adults Aged 50-75 With Overweight or Obesity

Overweight and obesity are major public health challenges worldwide, and their prevalence increases with age, partly because of age-related metabolic and hormonal changes. Beyond total fat mass, abdominal and particularly visceral fat accumulation is strongly associated with chronic low-grade inflammation, insulin resistance, hypertension and cardiovascular disease. Men are more likely to display an android fat distribution, while premenopausal women generally show a more protective gynoid distribution. However, declining sex hormone concentrations after menopause promote abdominal and visceral fat accumulation, increasing cardiometabolic risk.

Physical activity is a cornerstone of overweight and obesity management. High-intensity interval training (HIIT) is an effective strategy for reducing total, abdominal and visceral fat and may produce greater benefits than moderate-intensity continuous training. Since 2016, our team has conducted several studies and reviews showing that HIIT performed on a cycle ergometer or treadmill, alone or combined with resistance training, reduces total and abdominal fat mass in people with overweight or obesity, regardless of age, sex or hormonal status.

HIIT can also be performed under real or simulated hypoxic conditions to enhance cardiovascular, respiratory, circulatory, haematological and skeletal muscle adaptations. The Live Low-Train High model allows participants to live under normoxic conditions while being exposed to hypoxia only during exercise. Hypoxic HIIT has proved feasible and safe in people with metabolic disorders or physical deconditioning, including at simulated altitudes of 4,000-5,000 m. However, only two studies have suggested that hypoxic HIIT may enhance fat mass loss in people with overweight or obesity. Neither specifically assessed abdominal or visceral fat, and neither focused on postmenopausal women.

Several mechanisms may contribute to HIIT-induced fat loss, including increased catecholaminergic stimulation and lipid oxidation during recovery, excess post-exercise oxygen consumption and changes in appetite regulation. The gut microbiota may also contribute to the regulation of adipose tissue and cardiometabolic health. Physical activity can increase bacterial diversity and promote beneficial taxa, particularly short-chain fatty acid-producing bacteria. Our previous HIIT studies identified associations between changes in selected bacteria and reductions in total or abdominal fat mass. Hypoxic exposure may also alter gut microbiota composition and abundance, with effects depending on the severity and type of hypoxia.

This study will assess the effects of a 3-month cycle-ergometer HIIT programme, performed three times per week under hypoxic versus normoxic conditions, in adults aged 50-75 years with overweight or obesity. The primary objective is to determine whether hypoxic HIIT produces a greater reduction in abdominal and visceral fat mass than the same training performed in normoxia.

Secondary outcomes will include total and regional fat and lean mass; fasting glucose, insulin, HbA1c and HOMA-IR; total cholesterol, triglycerides, HDL-C, LDL-C, ApoB, ApoA1 and the ApoB/ApoA1 ratio; high-sensitivity C-reactive protein and fibrinogen; systolic and diastolic blood pressure; blood biophysical properties; and faecal microbiota richness, diversity and taxonomic composition. Lipid oxidation during prolonged moderate-intensity exercise, maximal oxygen uptake and maximal aerobic power will also be assessed before and after the intervention.

We hypothesise that hypoxic training will enhance improvements in body composition, metabolic and cardiovascular risk factors, aerobic fitness and lipid oxidation compared with normoxic training. We further hypothesise that hypoxia will modify faecal microbiota composition and that changes in selected bacterial taxa will be associated with changes in body composition and cardiovascular risk markers.

The ultimate aim is to improve the management of adults aged 50-75 years with overweight or obesity by developing an effective 3-month HIIT programme performed under controlled hypoxic conditions.

Studieoversigt

Status

Status

Angiver den aktuelle rekrutteringsstatus eller den udvidede adgangsstatus.
Rekruttering

Betingelser

Betingelser

Den sygdom, lidelse, syndrom, sygdom eller skade, der undersøges. På ClinicalTrials.gov kan tilstande også omfatte andre sundhedsrelaterede problemer, såsom levetid, livskvalitet og sundhedsrisici.

Intervention / Behandling

Intervention / Behandling

En proces eller handling, der er i fokus for en klinisk undersøgelse. Interventioner omfatter lægemidler, medicinsk udstyr, procedurer, vacciner og andre produkter, der enten er til undersøgelse eller allerede er tilgængelige. Interventioner kan også omfatte ikke-invasive tilgange, såsom uddannelse eller ændring af kost og motion.

Undersøgelsestype

Undersøgelsestype

Beskriver karakteren af ​​en klinisk undersøgelse. Undersøgelsestyper omfatter interventionelle undersøgelser (også kaldet kliniske forsøg), observationsundersøgelser (herunder patientregistre) og udvidet adgang.
Interventionel

Tilmelding (Anslået)

Tilmelding

Antallet af deltagere i en klinisk undersøgelse. Den "forventede" tilmelding er det mål for antallet af deltagere, som forskerne skal bruge til undersøgelsen.
32

Fase

Fase

Stadiet af et klinisk forsøg, der studerer et lægemiddel eller et biologisk produkt, baseret på definitioner udviklet af U.S. Food and Drug Administration (FDA). Fasen tager udgangspunkt i undersøgelsens formål, antallet af deltagere og andre karakteristika. Der er fem faser: Tidlig fase 1 (tidligere opført som fase 0), fase 1, fase 2, fase 3 og fase 4. Ikke relevant bruges til at beskrive forsøg uden FDA-definerede faser, herunder forsøg med enheder eller adfærdsmæssige indgreb.
  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Studiekontakt

Navn og kontaktoplysninger for den person, der kan besvare spørgsmål om tilmelding til en klinisk undersøgelse. Hvert sted, hvor undersøgelsen udføres, kan også have en specifik kontaktperson, som kan være bedre i stand til at besvare disse spørgsmål.

Studiesteder

  • Frankrig
      • Bellerive-sur-Allier, Frankrig, 03321
        • Rekruttering
        • CREPS Auvergne Rhône-Alpes / Vichy
        • Kontakt:

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

Berettigelseskriterier

De nøglekrav, som personer, der ønsker at deltage i et klinisk studie, skal opfylde eller de egenskaber, de skal have. Kvalifikationskriterier består af både inklusionskriterier (som er nødvendige for at en person kan deltage i undersøgelsen) og eksklusionskriterier (som forhindrer en person i at deltage). Typer af berettigelseskriterier omfatter, om en undersøgelse accepterer raske frivillige, har alders- eller aldersgruppekrav eller er begrænset af køn.

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

Aged 50-75 years, inclusive Male or postmenopausal female, defined as no menstruation during the previous 12 months Body mass index between 25 and 35 kg/m², inclusive Non-smoker or smoking no more than two cigarettes per day Stable body weight for at least three months before study initiation, defined as a change of less than 4 kg Stable dietary habits and physical activity level for at least three months before study initiation Willing to maintain usual dietary habits and physical activity level throughout the study Able and willing to comply with the study protocol Able and willing to provide written informed consent Affiliated with a social security scheme Willing to be registered in the French National Register of Volunteers Participating in Biomedical Research

Exclusion Criteria:

Medical or surgical history considered by the investigators to be incompatible with participation in the study Any medical condition considered by the investigators to be incompatible with participation in the study Medical contraindication to vigorous physical activity Current use of hormone replacement therapy Current use of beta-blocker therapy Diagnosed moderate-to-severe sleep apnoea syndrome that is untreated or inadequately controlled High-risk cardiovascular history, including symptomatic coronary artery disease, recent myocardial infarction or stroke, unstable heart failure, clinically significant arrhythmia, or uncontrolled hypertension Severe respiratory disease, including advanced chronic obstructive pulmonary disease classified as group B or E according to the 2023 GOLD classification, chronic respiratory failure, or uncontrolled asthma Diabetes of any type Chronic kidney disease stage 3B, 4 or 5 according to the KDIGO classification Severe liver disease, defined by an international normalised ratio greater than 1.2-1.3 Antibiotic treatment during the three months preceding the first stool collection More than eight hours of moderate-to-vigorous physical activity per week Any treatment that, in the investigators' opinion, could interfere with assessment of the study outcomes Low-energy diet during the three months preceding the study or intention to begin an energy-restricted diet during the study Extreme dietary habits Stay at an altitude above 2,500 m for more than eight days during the three months preceding the study Participation in another clinical study or currently within an exclusion period following participation in a previous clinical study Total compensation received for participation in research since the beginning of the calendar year exceeding €4,500, or the applicable regulatory limit Linguistic or psychological inability to provide informed consent Refusal to provide written informed consent Legally protected adult Deprived of liberty by an administrative or judicial decision Under guardianship or curatorship

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

Deltagergruppe / Arm

En gruppe eller undergruppe af deltagere i et klinisk forsøg, der modtager en specifik intervention/behandling eller ingen intervention i henhold til forsøgets protokol.
Intervention / Behandling

Intervention / Behandling

En proces eller handling, der er i fokus for en klinisk undersøgelse. Interventioner omfatter lægemidler, medicinsk udstyr, procedurer, vacciner og andre produkter, der enten er til undersøgelse eller allerede er tilgængelige. Interventioner kan også omfatte ikke-invasive tilgange, såsom uddannelse eller ændring af kost og motion.
Eksperimentel: Hypoxic HIIT (HIIT-H)
Participants will complete a 12-week cycle-ergometer HIIT programme, with three sessions per week, under normobaric hypoxia (FiO₂: 15%; simulated altitude: 3,000 m).
Adfærdsmæssigt: Hypoxic High-Intensity Interval Training
Participants will complete 36 cycle-ergometer HIIT sessions over 12 weeks (three sessions per week) under normobaric hypoxia (FiO₂: 15%; simulated altitude: 3,000 m). Each session will include a 5-minute warm-up followed by 60 repetitions of 8 seconds of acceleration at approximately 80-85 rpm and 12 seconds of deceleration at approximately 60 rpm. The 8-second efforts will be performed at 75-80% of maximal aerobic power.
Andre navne:
  • Hypoxic HIIT
  • HIIT-H
Aktiv komparator: Normoxic HIIT (HIIT-N)
Participants will complete the same 12-week cycle-ergometer HIIT programme, with three sessions per week, under normoxic conditions (FiO₂: 21%).
Adfærdsmæssigt: Normoxic High-Intensity Interval Training
Participants will complete 36 cycle-ergometer HIIT sessions over 12 weeks (three sessions per week) under normoxic conditions (FiO₂: 21%). Each session will include a 5-minute warm-up followed by 60 repetitions of 8 seconds of acceleration at approximately 80-85 rpm and 12 seconds of deceleration at approximately 60 rpm. The 8-second efforts will be performed at 75-80% of maximal aerobic power.
Andre navne:
  • Normoxic HIIT
  • HIIT-N

Hvad måler undersøgelsen?

Primære resultatmål

Primære resultatmål

I et klinisk studies protokol er det planlagte resultatmål, der er det vigtigste for at evaluere effekten af ​​en intervention/behandling. De fleste kliniske undersøgelser har ét primært resultatmål, men nogle har mere end ét.
Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Relative Change in Total Abdominal Fat Mass
Tidsramme: Baseline and immediately after the 12-week intervention
Total abdominal fat mass will be measured by dual-energy X-ray absorptiometry (DXA) at baseline and after the 12-week intervention. The relative change will be calculated as: (abdominal fat mass at 12 weeks - abdominal fat mass at baseline) / abdominal fat mass at baseline. More negative values indicate a greater reduction in abdominal fat mass. The change will be compared between the hypoxic and normoxic HIIT groups.
Baseline and immediately after the 12-week intervention

Sekundære resultatmål

Sekundære resultatmål

I en klinisk undersøgelses protokol er et planlagt resultatmål, der ikke er lige så vigtigt som det primære resultatmål for at evaluere effekten af ​​en intervention, men som stadig er af interesse. De fleste kliniske undersøgelser har mere end ét sekundært resultatmål.
Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Relative Change in Body Mass
Tidsramme: Baseline and after 12 weeks of intervention
Description: Body mass will be measured in kilograms at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between the hypoxic and normoxic HIIT groups.
Baseline and after 12 weeks of intervention
Relative Change in Visceral Abdominal Fat Mass
Tidsramme: Baseline and after 12 weeks of intervention
Description: Visceral abdominal fat mass will be measured by DXA at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Total Lean Mass
Tidsramme: Baseline and after 12 weeks of intervention
Description: Total lean mass will be measured in kilograms by DXA at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Waist-to-Hip Ratio
Tidsramme: Baseline and after 12 weeks of intervention
Description: The waist-to-hip ratio will be calculated by dividing waist circumference by hip circumference at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in metabolic Plasma parameters (TG, HBA1C, glucose, insulin, HDL, LDL)
Tidsramme: Baseline and after 12 weeks of intervention
Fasting concentration will be measured at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Whole Blood Viscosity
Tidsramme: Baseline and after 12 weeks of intervention
Whole blood viscosity will be assessed using standardised haemorheological procedures at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Red Blood Cell Deformability
Tidsramme: Baseline and after 12 weeks of intervention
Description: Red blood cell deformability will be assessed using standardised haemorheological procedures at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Red Blood Cell Aggregation
Tidsramme: Baseline and after 12 weeks of intervention
Description: Red blood cell aggregation will be assessed using standardised haemorheological procedures at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Change in the Relative Abundance of Prespecified Gut Bacterial Taxa
Tidsramme: Baseline and after 12 weeks of intervention
Description: The relative abundance of prespecified bacterial taxa will be determined from faecal microbiota samples collected at baseline and after the 12-week intervention. Changes in relative abundance will be compared between the hypoxic and normoxic HIIT groups.
Baseline and after 12 weeks of intervention
Change in Faecal Gut Microbiota Alpha Diversity
Tidsramme: Baseline and after 12 weeks of intervention
Description: Alpha-diversity indices reflecting within-sample bacterial richness and diversity will be calculated from faecal microbiota samples collected at baseline and after the 12-week intervention. Changes will be compared between the hypoxic and normoxic HIIT groups.
Baseline and after 12 weeks of intervention
Change in Faecal Gut Microbiota Beta Diversity
Tidsramme: Baseline and after 12 weeks of intervention
Description: Beta diversity, reflecting differences in bacterial community composition, will be assessed using faecal samples collected at baseline and after the 12-week intervention. Changes in community composition will be compared between the hypoxic and normoxic HIIT groups.
Baseline and after 12 weeks of intervention
Relative Change in Maximal Aerobic Power
Tidsramme: Baseline and after 12 weeks of intervention
Description: Maximal aerobic power, expressed in watts, will be determined during a maximal exercise test at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Lipid Oxidation Rate During Submaximal Exercise
Tidsramme: Baseline and after 12 weeks of intervention
Description: Lipid oxidation rate, expressed in grams per minute, will be calculated by indirect calorimetry during 45 minutes of fasted exercise performed at 50% of V̇O₂max, at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention
Relative Change in Carbohydrate Oxidation Rate During Submaximal Exercise
Tidsramme: Baseline and after 12 weeks of intervention
Description: Carbohydrate oxidation rate, expressed in grams per minute, will be calculated by indirect calorimetry during 45 minutes of fasted exercise performed at 50% of V̇O₂max, at baseline and after the 12-week intervention. Relative change will be calculated as: (week 12 value - baseline value) / baseline value and compared between groups.
Baseline and after 12 weeks of intervention

Samarbejdspartnere og efterforskere

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

Sponsor

Sponsor

Den organisation eller person, der igangsætter undersøgelsen, og som har myndighed og kontrol over undersøgelsen.
Laboratoire des Adaptations Métaboliques à l'Exercice en conditions Physiologiques et Pathologiques

Samarbejdspartnere

Samarbejdspartnere

En anden organisation end sponsoren, der yder støtte til en klinisk undersøgelse. Denne støtte kan omfatte aktiviteter relateret til finansiering, design, implementering, dataanalyse eller rapportering.
CREPS Auvergne Rhône-Alpes (AURA)

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 (Faktiske)

Studiestart

Den faktiske dato, hvor den første deltager blev tilmeldt en klinisk undersøgelse. Den "forventede" undersøgelses startdato er den dato, som forskerne tror vil være undersøgelsens startdato.
26. august 2026

Primær færdiggørelse (Anslået)

Primær færdiggørelse

Den dato, hvor den sidste deltager i et klinisk studie blev undersøgt eller modtog en intervention for at indsamle endelige data for det primære resultatmål. Hvorvidt det kliniske studie sluttede i henhold til protokollen eller blev afsluttet, påvirker ikke denne dato. For kliniske undersøgelser med mere end ét primært resultatmål med forskellige afslutningsdatoer refererer dette udtryk til den dato, hvor dataindsamlingen er afsluttet for alle de primære resultatmål. Den "forventede" primære afslutningsdato er den dato, som forskerne tror vil være den primære afslutningsdato for undersøgelsen.
5. juli 2028

Studieafslutning (Anslået)

Studieafslutning

Den dato, hvor den sidste deltager i et klinisk studie blev undersøgt eller modtog en intervention/behandling for at indsamle endelige data for de primære resultatmål, sekundære udfaldsmål og uønskede hændelser (det vil sige den sidste deltagers sidste besøg). Den "forventede" undersøgelses afslutningsdato er den dato, som forskerne tror vil være undersøgelsens afslutningsdato.
5. juli 2028

Datoer for studieregistrering

Først indsendt

Først indsendt

Den dato, hvor undersøgelsens sponsor eller investigator første gang indsendte en undersøgelsespost til ClinicalTrials.gov. Der er typisk en forsinkelse på et par dage mellem den første indsendte dato og postens tilgængelighed på ClinicalTrials.gov (den første offentliggjorte dato).
27. august 2026

Først indsendt, der opfyldte QC-kriterier

Først indsendt, der opfyldte QC-kriterier

Den dato, hvor undersøgelsens sponsor eller investigator første gang indsender en undersøgelsespost, der er i overensstemmelse med National Library of Medicine (NLM) kvalitetskontrol (QC) gennemgangskriterier. Sponsoren eller investigatoren skal muligvis revidere og indsende en undersøgelsespost en eller flere gange, før NLM's kvalitetskontrolkriterier er opfyldt. Det er sponsorens eller investigatorens ansvar at sikre, at undersøgelsesposten er i overensstemmelse med NLM QC-gennemgangskriterierne.
27. august 2026

Først opslået (Faktiske)

Først opslået

Datoen, hvor undersøgelsesposten først var tilgængelig på ClinicalTrials.gov efter National Library of Medicine (NLM) kvalitetskontrol (QC) gennemgang er afsluttet. Der er typisk en forsinkelse på et par dage mellem den dato, hvor undersøgelsens sponsor eller investigator indsendte undersøgelsesposten, og den første offentliggjorte dato.
1. september 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

Sidste opdatering sendt

Den seneste dato, hvor ændringer i en undersøgelsespost blev gjort tilgængelig på ClinicalTrials.gov. Der kan være en forsinkelse mellem det tidspunkt, hvornår ændringerne blev indsendt til ClinicalTrials.gov af undersøgelsens sponsor eller investigator (datoen for sidste opdatering afsendt) og den sidste opdatering, der blev sendt.
1. september 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

Den seneste dato, hvor undersøgelsens sponsor eller investigator indsendte ændringer til en undersøgelsespost, der er i overensstemmelse med National Library of Medicine (NLM) kvalitetskontrol (QC) gennemgangskriterier. Det er sponsorens eller investigatorens ansvar at sikre, at undersøgelsesposten er i overensstemmelse med NLM QC-gennemgangskriterierne.
27. august 2026

Sidst verificeret

Sidst verificeret

Den seneste dato, hvor undersøgelsens sponsor eller investigator bekræftede oplysningerne om en klinisk undersøgelse på ClinicalTrials.gov som nøjagtige og aktuelle. Hvis en undersøgelse med rekrutteringsstatus som rekruttering; rekrutterer endnu ikke; eller aktiv, ikke rekruttering er ikke blevet bekræftet inden for de seneste 2 år, er undersøgelsens rekrutteringsstatus vist som ukendt.
1. august 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

Andre undersøgelses-id-numre

Andre identifikatorer eller ID-numre end NCT-nummeret, der er tildelt til en klinisk undersøgelse af undersøgelsens sponsor, finansieringsgivere eller andre. Disse numre kan omfatte unikke identifikatorer fra andre forsøgsregistre og National Institutes of Health-bevillingsnumre.
  • ID-RCB : 2025-A01744-45

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ingen

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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