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Protocolli di test da sforzo per donne e uomini con CAD (PACED)

30 settembre 2026 aggiornato da: Ottawa Heart Institute Research Corporation

Confronto dei valori di picco VO2 dei protocolli di test da sforzo per donne e uomini con CAD

The aim of this study is to determine if the test that allows males to achieve a higher VO2 (a measure of oxygen use during exercise) is different for females. The purpose of this study is to test 4 different exercise testing protocols to compare measured oxygen consumption in females and males with CAD (disease caused by the buildup of plaque in the artery walls which can lead to insufficient amounts of blood, nutrients and oxygen being supplied to the heart). The 4 exercise tests that will be completed on the treadmill are the modified Balke, modified Bruce, modified Naughton and University of Ottawa Heart Institute Slow Ramp protocols. Each test has a different stage duration (the amount of time that the test remains at a pre-determined speed and incline), and incremental increase in speed and incline.

The main purpose of this study is to compare VO2 peak (the maximal amount of oxygen utilized during the exercise test) of females and males with CAD in 4 different exercise protocols. For example, the investigators will find out:

  1. which exercise protocol is more likely to achieve a higher peak V̇O2 in females and which protocol is more likely to achieve a higher peak V̇O2 in males,
  2. if enjoyment affects the duration of the test, and
  3. how different exercise test protocols will provide different results of maximal oxygen used by the participant's body during the exercise test.

Panoramica dello studio

Stato

Reclutamento

Condizioni

Intervento / Trattamento

Tipo di studio

Osservativo

Iscrizione (Stimato)

54

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Backup dei contatti dello studio

Luoghi di studio

    • Ontario
      • Ottawa, Ontario, Canada, K1Y 4W7
        • Reclutamento
        • University of Ottawa Heart Institute
        • Contatto:
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

18 anni e precedenti (Adulto, Adulto più anziano)

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Metodo di campionamento

Campione di probabilità

Popolazione di studio

Adults older than 18 years of age and have been diagnosed with CAD.

Descrizione

Inclusion Criteria:

  1. 18 years and older;
  2. previous CAD diagnosis by a physician;
  3. can perform a CPET until volitional exhaustion;
  4. are able to self-ambulate on a treadmill;
  5. are at least 8 weeks post cardiovascular event or procedure (i.e., percutaneous coronary intervention (PCI), coronary artery bypass graft (CABG)); and,
  6. are able to provide written informed consent.

Exclusion Criteria:

  1. cannot speak, read, write, or understand English or French;
  2. currently not enrolled in a CR program;
  3. have recently changed (or planning to change) PA levels within the previous 4 weeks (as this may impact the ability to compare outcomes between exercise testing protocols);
  4. have heart failure with an ejection fraction <45% (indication of possible cardiomyopathy);6
  5. have an arrythmia (relative contraindication for exercise testing),6 peripheral artery disease, valvular disease, severe aortic stenosis, cardiomyopathy, SCAD and/or COPD (contraindications for maximal exercise testing);
  6. has an ICD;
  7. is pregnant (sustained vigorous exercise in pregnant women may induce fetal bradycardia)
  8. is unable to complete submaximal exercise testing (i.e., treadmill, due to musculoskeletal limitations).

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Modelli osservazionali: CASE_ONLY
  • Prospettive temporali: PROSPECTIVE

Coorti e interventi

Gruppo / Coorte
Intervento / Trattamento
CPETs

Patients will perform all 4 maximal cardiopulmonary exercise tests in randomized order. The protocols they will perform are: Modified Bruce, modified Naughton, modified Balke and the UOHI Slow Ramp.

Patients will complete 4 different cardiopulmonary exercise tests in random order.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Oxygen Consumption (VO2)
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

V̇O2 will be measured continuously throughout the treadmill CPET. Peak V̇O2, defined as the highest V̇O2 value that is achieved over a 20-s period during the last minute of the CPET. V̇O2 will be measured throughout each test by a metabolic system (Parvo Medics TrueOne 2400).

Week 1 to week 4 (measured weekly, at every appointment)

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Cardiometabolic health indicators - Blood pressure (BP)
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Resting BP (mmHg) will be measured from a seated position using an automated BP monitor. BP will be measured manually using a BP cuff every 2 stages throughout the CPET using an automated BP monitor. Recovery BP will be measured after the completion of the test from a seated position using the automated BP monitor.

Week 1 to week 4 (measured weekly, at every appointment)
Cardiometabolic health indicators - Heart Rate (HR)
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Heart rate will be measured from a seated position using an automated BP monitor. HR will be measured continuously throughout the CPET using a 4-lead electrocardiogram connected to a metabolic system. Recovery HR will be measured after the completion of the test from a seated position using the automated BP monitor.

Week 1 to week 4 (measured weekly, at every appointment)
Cardiometabolic health indicators - Body mass index
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Height (cm) and body mass (kg) will be measured to compute body mass index (kg/m2).

Week 1 to week 4 (measured weekly, at every appointment)
Cardiometabolic health indicators - Fat mass
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Fat mass (kg) and fat-free mass (kg) will be measured using bioelectrical impedance.

Week 1 to week 4 (measured weekly, at every appointment)
Cardiometabolic health indicators - Waist circumference
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Waist circumference will be measured using standardized procedures (2 repeated measures using a tape; in centimeters).

Week 1 to week 4 (measured weekly, at every appointment)
Cardiometabolic health indicators - Height
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Height will be measured using standardized procedures (2 repeated measures using a tape; in centimeters).

Week 1 to week 4 (measured weekly, at every appointment)
Blood Lactate
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Blood lactate (mmol/L) will be measured in the last 30s of every test stage throughout the test using a blood lactate analyzer.

Week 1 to week 4 (measured weekly, at every appointment)
Rating of perceived exertion (RPE)
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Measured at the end of every stage using the validated Borg 6-20 rating of perceived exertion scale. This scale measures how physically exerted an individual feels. 6 is complete rest (i.e., no exertion, ex: sitting in a chair not moving and relaxed), 20 is perceived maximal exertion of effort. These values are perceived measures of effort and will increase as the exercise test progresses and gets harder for the patient.

Week 1 to week 4 (measured weekly, at every appointment)
Test duration
Lasso di tempo: Week 1 to week 4 (measured weekly, at every appointment)

Measured using portable metabolic system that is connected to a computer. The duration of the test will be recorded.

Week 1 to week 4 (measured weekly, at every appointment)
Reason for test termination
Lasso di tempo: Week 1 to week 4 (collected weekly, at every appointment)

Reason for test termination will be collected subjectively by asking the patient (i.e., fatigue, muscular limitation, etc.)

Week 1 to week 4 (collected weekly, at every appointment)
Physical activity enjoyment
Lasso di tempo: Week 1 to week 4 (collected weekly, at every appointment)

This is a subjective questionnaire that measures the extent to which the patient enjoyed participating in the test.

Week 1 to week 4 (collected weekly, at every appointment)
Most enjoyed test
Lasso di tempo: Week 4 - collected at the patient's last appointment

Using a feedback questionnaire, the test that was most frequently ranked the most enjoyed by patients will be measured

Week 4 - collected at the patient's last appointment

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Sponsor

Investigatori

  • Investigatore principale: Jennifer Reed, PhD, Ottawa Heart Institute Research Corporation

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

1 marzo 2024

Completamento primario (Stimato)

1 dicembre 2028

Completamento dello studio (Stimato)

1 dicembre 2030

Date di iscrizione allo studio

Primo inviato

11 dicembre 2023

Primo inviato che soddisfa i criteri di controllo qualità

11 dicembre 2023

Primo Inserito (Effettivo)

21 dicembre 2023

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

5 ottobre 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

30 settembre 2026

Ultimo verificato

1 settembre 2026

Maggiori informazioni

Termini relativi a questo studio

Altri numeri di identificazione dello studio

  • 20230327-01H

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .