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Protokoll för träningstestning för kvinnor och män med CAD (PACED)

30 september 2026 uppdaterad av: Ottawa Heart Institute Research Corporation

Jämföra VO2-toppvärden för träningstestprotokoll för kvinnor och män med 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.

Studieöversikt

Status

Rekrytering

Betingelser

Intervention / Behandling

Studietyp

Observationell

Inskrivning (Beräknad)

54

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studera Kontakt Backup

Studieorter

  • Kanada
    • Ontario
      • Ottawa, Ontario, Kanada, K1Y 4W7
        • Rekrytering
        • University of Ottawa Heart Institute
        • Kontakt:
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Testmetod

Sannolikhetsprov

Studera befolkning

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

Beskrivning

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).

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Observationsmodeller: CASE_ONLY
  • Tidsperspektiv: PROSPECTIVE

Kohorter och interventioner

Grupp / Kohort
Intervention / Behandling
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.
Diagnostiskt test: Exercise Tests

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

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Oxygen Consumption (VO2)
Tidsram: 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)

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Cardiometabolic health indicators - Blood pressure (BP)
Tidsram: 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)
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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)
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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
Tidsram: 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

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Ottawa Heart Institute Research Corporation

Utredare

  • Huvudutredare: Jennifer Reed, PhD, Ottawa Heart Institute Research Corporation

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

1 mars 2024

Primärt slutförande (Beräknad)

1 december 2028

Avslutad studie (Beräknad)

1 december 2030

Studieregistreringsdatum

Först inskickad

11 december 2023

Först inskickad som uppfyllde QC-kriterierna

11 december 2023

Första postat (Faktisk)

21 december 2023

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

5 oktober 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

30 september 2026

Senast verifierad

1 september 2026

Mer information

Termer relaterade till denna studie

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 20230327-01H

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