Deze pagina is automatisch vertaald en de nauwkeurigheid van de vertaling kan niet worden gegarandeerd. Raadpleeg de Engelse versie voor een brontekst.

Central Hemodynamic Exercise Responses Study (CHeER)

26 oktober 2017 bijgewerkt door: Arizona State University

Postexercise Central Blood Pressure and Hemodynamic Response After Continuous and Aerobic Interval Exercise

The purpose of this study is to examine the acute effect of continuous and aerobic interval exercise on postexercise central BP response in men with an elevated blood pressure.

Studie Overzicht

Toestand

Beëindigd

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

The specific aim of this study is to compare postexercise central blood pressure after continuous and aerobic interval exercise. It is hypothesized that aerobic interval exercise will produce a longer duration postexercise hypotensive response compared to continuous exercise. 14 healthy, inactive (defined as less than 60 minutes of moderate to vigorous physical activity per week, as characterized by accelerometry) men aged 18-45 yr, who have high normal BP or stage 1 hypertension (systolic BP (SBP) 120-159 mmHg or diastolic BP (DBP) 80-99 mmHg) according to JNC 8 established guidelines, will be included in this randomized cross-over design study. Each subject will complete three conditions in a randomized order: aerobic interval exercise, continuous exercise, and non-exercise control.

For the aerobic interval exercise condition, subjects will be equipped with a heart rate (HR) monitor and asked to perform an interval exercise bout on a cycle ergometer. To warm up, subjects will cycle at a work rate associated with 50% HRmax for 10 minutes. Wattage will then increase and subjects will do four 4-minute intervals at a work rate associated with 90%-95% HRmax, separated by 3 minutes of active recovery at a work rate associated with 50% HRmax. Subjects will be given a 5-minute cool-down period at a work rate associated with 50% HRmax. After the exercise, subjects will remain in the lab for 4 hours and their blood pressure will be measured every 10 minutes using the Oscar 2 with SphygmoCor ambulatory blood pressure system, and cardiac output measured in 10-second averages using the PhysioFlow. During this time, subjects will remain seated with their body posture maintained constant.

For the continuous exercise condition, subjects will be equipped with a HR monitor and asked to perform a continuous exercise bout on a cycle ergometer. To warm up, subjects will cycle at a work rate associated with 50% HRmax for 10 minutes. Wattage will then increase and subjects will perform a 30-minute exercise bout at a HR that elicits 75%-80% of their measured HRmax. Work rate will be adjusted, if needed, to keep HR within this value. Subjects will be given a 5-minute cool-down period at a work rate associated with 50% HRmax. After the exercise, subjects will remain in the lab for 4 hours and their blood pressure will be measured every 10 minutes using the Oscar 2 with SphygmoCor ambulatory blood pressure system, and cardiac output measured in 10-second averages using the PhysioFlow. During this time, subjects will remain seated with their body posture maintained constant.

For the non-exercise control condition, subjects will be asked to come to the laboratory for 4 hours and have their blood pressure will be measured every 10 minutes using the Oscar 2 with SphygmoCor ambulatory blood pressure system, and cardiac output measured in 10-second averages using the PhysioFlow. During this time, subjects will remain seated with their body posture maintained constant.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

5

Fase

  • Niet toepasbaar

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Verenigde Staten
    • Arizona
      • Phoenix, Arizona, Verenigde Staten, 85004
        • Arizona State University

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar tot 45 jaar (Volwassen)

Accepteert gezonde vrijwilligers

Ja

Geslachten die in aanmerking komen voor studie

Mannelijk

Beschrijving

Inclusion Criteria:

  • Inactive (defined as less than 60 minutes of moderate to vigorous physical activity per week, as characterized by accelerometry) non-smoking men who have high normal blood pressure or stage 1 hypertension (systolic BP (SBP) 120-159 mmHg or diastolic BP (DBP) 80-99 mmHg) according to JNC 8 established guidelines

Exclusion Criteria:

  • Men over 45 years old, who register more than 60 minutes/week of moderate-to-vigorous physical activity, or have a blood pressure less than 120/80 mmHg will be excluded. Those who answer positively (i.e., yes) on The Physical Activity Readiness Questionnaire (PAR-Q) will be excluded from participating in the study. Those with known cardiovascular, pulmonary, renal or metabolic disease, or having symptoms suggestive of these diseases will be excluded from the study as per current American College of Sports Medicine guidelines. Current smokers or anyone with contraindications to vigorous exercise will be excluded from the study as well. Subjects on medications used for the treatment of symptomatic cardiovascular disease will be excluded

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Screening
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Crossover-opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Geen tussenkomst: Non-exercise Control
Subjects will come to the laboratory for 4 hours and their blood pressure will be measured every 10 minutes using the Oscar 2 with SphygmoCor ambulatory blood pressure system, and cardiac output will be measured with 10-second averages using the PhysioFlow. During this time, subjects will remain seated with their body posture maintained constant
Experimenteel: Aerobic Interval Exercise
Subjects will be equipped with a heart rate (HR) monitor and perform an interval exercise bout on a cycle ergometer. To warm up, subjects will cycle at a work rate associated with 50% HRmax for 10 minutes. Wattage will then increase and subjects will do four 4-minute intervals at a work rate associated with 90%-95% HRmax, separated by 3 minutes of active recovery at a work rate associated with 50% HRmax. Subjects will be given a 5-minute cool-down period at a work rate associated with 50% HRmax. After the exercise, subjects will remain seated in the lab for 4 hours and their blood pressure will be measured every 10 minutes using the Oscar 2 with SphygmoCor ambulatory blood pressure system, and cardiac output will be measured with 10-second averages using the PhysioFlow.
Ander: Aerobic Interval Exercise
Subjects will perform an interval exercise bout on a cycle ergometer. To warm up, they will cycle at a work rate associated with 50% of their max heart rate (HR) for 10 minutes. Wattage will then increase and they will do four 4-minute intervals at a work rate associated with 90%-95% HRmax, separated by 3 minutes of active recovery at a work rate associated with 50% HRmax They will be given a 5-minute cool-down period at a work rate associated with 50% of their max HR. After the exercise, they will remain in the lab for 4 hours and their blood pressure will be measured every 10 minutes using an automated blood pressure monitor and cardiac output will be measured using the PhysioFlow. They will remain seated during this time
Experimenteel: Continuous Exercise
Subjects will be equipped with a heart rate (HR) monitor and perform an interval exercise bout on a cycle ergometer. To warm up, subjects will cycle at a work rate associated with 50% HRmax for 10 minutes. Wattage will then increase and subjects will perform a 30-minute exercise bout at a HR that elicits 75%-80% of their measured HRmax. Work rate will be adjusted, if needed, to keep HR within this value. Subjects will be given a 5-minute cool-down period at a work rate associated with 50% HRmax. After the exercise, subjects will remain seated in the lab for 4 hours and their blood pressure will be measured every 10 minutes using the Oscar 2 with SphygmoCor ambulatory blood pressure system, and cardiac output will be measured with 10-second averages using the PhysioFlow.
Ander: Continuous exercise
Subjects will perform a 30-minute continuous exercise bout on a cycle ergometer. To warm up, they will cycle at a work rate associated with 50% of their max heart rate (HR) for 10 minutes. Wattage will then increase and they will perform a 30-minute exercise bout at a work rate associated with 75%-80% of their max HR. They will be given a 5-minute cool-down period at a work rate associated with 50% of their max HR. After the exercise, they will remain in the lab for 4 hours and their blood pressure will be measured every 10 minutes using an automated blood pressure monitor and cardiac output will be measured using the PhysioFlow. They will remain seated during this time.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Postexercise central blood pressure response after aerobic interval and continuous exercise
Tijdsspanne: 4 hours
After the subject performs both an aerobic interval and continuous exercise, blood pressure will be measured every 10-minutes using an ambulatory blood pressure monitor
4 hours

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Postexercise hemodynamic response after aerobic interval and continuous exercise
Tijdsspanne: 4 hours
After the subject performs both an aerobic interval and continuous exercise, cardiac output will be measured in 10-second averages using the PhysioFlow
4 hours

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Arizona State University

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

27 maart 2017

Primaire voltooiing (Verwacht)

1 december 2017

Studie voltooiing (Verwacht)

1 december 2017

Studieregistratiedata

Eerst ingediend

13 april 2017

Eerst ingediend dat voldeed aan de QC-criteria

13 april 2017

Eerst geplaatst (Werkelijk)

18 april 2017

Updates van studierecords

Laatste update geplaatst (Werkelijk)

27 oktober 2017

Laatste update ingediend die voldeed aan QC-criteria

26 oktober 2017

Laatst geverifieerd

1 oktober 2017

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • CHeER

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

Klinische onderzoeken op Aerobic Interval Exercise

Zoek naar vergelijkbare onderzoeken

Sponsors en medewerkers

Medische omstandigheden

Geneesmiddelinterventies

CROs by country

CROs in Kosovo

Voorwaarden

Zeldzame ziekten

Geneesmiddelinterventies

Voedingssupplementen

Sponsor / medewerkers

Locaties

Abonneren