Nitrate Supplementation in Chronic Obstructive Pulmonary Disease (COPD)
The Effects of Dietary Nitrate Supplementation on Metabolic Efficiency in Patients With COPD
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
Limburg
-
Maastricht, Limburg, Holland
- Maastricht University Medical Center
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- COPD
- Indication metabolic inefficiency
Exclusion Criteria:
- Sodium intake limitation
- Long-term oxygen therapy
- Severe renal impairment
- Use of medications that may interact with nitrate
- Contra-indications for performing (sub)maximal cycle ergometry
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Firedobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Aktiv komparator: Nitrate supplementation
Sodium nitrate solution
|
7 days of supplementation with sodium nitrate solution
7 days of supplementation with sodium chloride solution
|
|
Placebo komparator: Placebo supplementation
Sodium chloride solution
|
7 days of supplementation with sodium nitrate solution
7 days of supplementation with sodium chloride solution
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in metabolic efficiency during exercise
Tidsramme: Baseline, day 7, day 14 and day 21.
|
Metabolic efficiency (degree of efficiently used energy during exercise) will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21.
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in blood pressure during exercise
Tidsramme: Baseline, day 7, day 14 and day 21.
|
Change in blood pressure will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21.
|
|
Change in dyspnea during exercise
Tidsramme: Baseline, day 7, day 14 and day 21.
|
Change in dyspnea will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21.
|
|
Change in cycle endurance time during exercise.
Tidsramme: Baseline, day 7, day 14 and day 21.
|
Change in cycle endurance time will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21.
|
|
Change in oxygen uptake (VO2 mL/min) during exercise
Tidsramme: Baseline, day 7, day 14 and day 21
|
Change in oxygen uptake will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21
|
|
Change in Resting Energy Expenditure (REE)
Tidsramme: Baseline, day 7, day 14 and day 21
|
Change in REE will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21
|
|
Change in plasma concentrations of nitrate and nitrite, glucose, insulin, lactate and free fatty acids, IFABP and cardiac troponin
Tidsramme: Baseline, day 7, day 14 and day 21
|
Change in these plasma concentrations will be assessed during the test days before and after the two supplementation periods (active and placebo) for a total timespan of 3 weeks.
|
Baseline, day 7, day 14 and day 21
|
Andre resultatmål
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
VO2max and Wmax
Tidsramme: Baseline
|
Baseline
|
|
|
height, body weight and body mass index (BMI)
Tidsramme: Baseline
|
Baseline
|
|
|
Fat free mass and fat mass
Tidsramme: Baseline
|
Fat free mass and fat mass determined by DEXA-scan
|
Baseline
|
|
Lung function
Tidsramme: Baseline
|
Baseline
|
|
|
Physical activity
Tidsramme: During the two supplementation periods
|
During the two supplementation periods
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Studieleder: Annemie Schols, Prof., Maastricht University Medical Center
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- ABR-47701
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