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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04004689
Other study ID # 6STaR-2
Secondary ID
Status Recruiting
Phase
First received
Last updated
Start date August 1, 2019
Est. completion date September 30, 2023

Study information

Verified date February 2023
Source ADIR Association
Contact Tristan Bonnevie, MsC
Phone 02 65 59 29 70
Email rehabilitation@adir-hautenormandie.com
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Chronicle obstructive pulmonary disease is a worldwide cause of mortality and morbidity. This systemic disease progressively leads to dyspnea, muscle wasting and exercise capacity impairment. Pulmonary rehabilitation is a cornerstone in the management of these systemic effects. Unfortunately, access to pulmonary rehabilitation is limited for many people who would benefit from it, primarily because of a lack of pulmonary rehabilitation and assessment centers. Optimal assessment should include cardiopulmonary exercise testing to determine both the optimal training settings as well as any cardiopulmonary contraindications to pulmonary rehabilitation. However, this is not available in most centers and when it is, consultations are limited. Therefore, pulmonary rehabilitation is often delayed for several weeks and patients can lose motivation. In order to promote pulmonary rehabilitation, the incremental cardiopulmonary exercise testing could be replaced by field tests to individualize pulmonary rehabilitation prescription. The 6-minute stepper test is a new field tool. Its sensitivity and reproducibility have previously been reported in patients with chronicle obstructive pulmonary disease. It is easy to set up in the clinical setting and could be used to individualize pulmonary rehabilitation. The aim of this study was to develop and validate a prediction equation to set rehabilitation intensity for patients with severe to very severe chronicle obstructive pulmonary disease attending pulmonary rehabilitation, with the use of a simple, readily available field test. Therefore the investigators sought to determine, if it exists, a relationship between the plateau heart rate from the first and last 3 minutes of the 6-minute stepper test and the heart rate from the first ventilatory threshold from the cardiopulmonary exercise testing in order to individualize pulmonary rehabilitation in patients with severe to very severe chronicle obstructive pulmonary disease.


Description:

Experimental design: The validation of the six-minute stepper test to prescribe endurance training in severe to very severe chronicle obstructive pulmonary disease involves two steps : 1. Patients with severe to very severe chronicle obstructive pulmonary disease who performed an incremental cardiopulmonary exercise testing and are referred to pulmonary rehabilitation will be approached to participate in the study. Eligible patients who agree to participate in the study and sign informed consent will perform two six-minute stepper test. Their performance and heart rate (first and last 3minutes) will be compared with those obtained at the first ventilatory threshold from the previously performed incremental cardiopulmonary exercise testing (usually used for the prescription of endurance training in pulmonary rehabilitation) using multiple regression in order to derive a predictive equation. 2. The validity of this predictive equation will be assessed in an independent cross-validation group issued from a completed multicenter observational study (NCT03244137). This cross-validation group will be formed with those patients of this cohort who performed both the incremental cardiopulmonary exercise testing (and had a determined first ventilatory threshold) and the six-minute stepper test. The heart rate prescription for endurance training from the direct measurement of the the first ventilatory threshold will be compared to the heart rate derived from the 6minute-stepper test using the predictive equation determined in step 1. Data will be compared using the mean absolute difference between both prescriptions and a Bland-Altman analysis.


Recruitment information / eligibility

Status Recruiting
Enrollment 80
Est. completion date September 30, 2023
Est. primary completion date June 30, 2023
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria: - Age > 18 ans ; - Chronicle obstructive pulmonary disease stage III/IV (FEV1 < 50%) ; - Weight = 90kg ; - Eligible for pulmonary rehabilitation ; - A first ventilatory threshold has been identified during a previously performed incremental cardiopulmonary exercise testing. Exclusion Criteria: - Pregnant woman or likely to be ; - Patient under guardianship ; - Contraindication to cardiopulmonary exercise testing ; - Patient medically treated with heart rate modulator (excluding oral B2-agonist) ; - Patient treated with pacemaker or defibrillator ; - History of lower limb impairment (i.e. peripheral artery disease, orthopedic disorder etc.).

Study Design


Intervention

Other:
2 times : 6-minute stepper test with a rest of 20min between each test.
Patients will perform two 6-minute stepper tests separated by a rest period of at least 20 minutes. The second test will begin when the heart rate and the transcutaneous oxygen saturation values will be returned to baseline values. Standardization of the instructions for the test will be based on the actual guidelines for the 6-minute walk test. The test will be performed in an isolated room in order to avoid noise or external stimuli which can affect performance. The stepper will be placed near a door and the patient was allowed to put a hand on it if out of balance or exhausted. The height of the step will be fixed to 20 cm. A step was defined as the rise and lowering of one foot. The patient was informed of the time each minute. No other encouragement was given. Heart rate and transcutaneous oxygen saturation will be continuously recorded by a pulse oximetry.

Locations

Country Name City State
France ADIR Association Bois-Guillaume
France Centre Hostalier Intercommunal Elbeuf-Louviers-Val de Reuil Elbeuf
France Groupe Hospitalier du Havre Le Havre
France Centre Hospitalier de Morlaix Morlaix

Sponsors (1)

Lead Sponsor Collaborator
ADIR Association

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary Relation between plateau heart rate (bpm) from the first and last 3 minutes of the 6-minute stepper test and heart rate (bpm) from first ventilatory threshold from cardiopulmonary exercise testing. Outcome (heart rate) during different tests will be continuously recorded. Relation will be adjusted for age and step count. Heart rate (bpm) will be assessed during cardiopulmonary exercise testing with electrocardiogram. During the 2 6-minute stepper test, heart will be assessed with oximeter. All theses tests wil be carried out in a total time frame of 3 month maximum.
Secondary Relation between minimal SpO2 (%)from the 6-minute stepper test and SpO2 (%) from first ventilatory threshold from cardiopulmonary exercise testing. Outcome (SpO2 (%)) during different tests will be continuously recorded. Relation will be adjusted for age en step count. SpO2 will be assessed with oximeter. All theses tests wil be carried out in a total time frame of 3 month maximum.
Secondary Diastolic blood pressure (mmHg) before and after every 6-minute stepper test using electrical blood pressure device. The outcome will be assessed before and after every 6-minute stepper test. The 2 6-minute stepper test will be carried out the same day (minimum 20 minute of rest between each test) for a total time frame of 1 day.
Secondary Systolic blood pressure (mmHg) before and after every 6-minute stepper test using electrical blood pressure device. The outcome will be assessed before and after every 6-minute stepper test. The 2 6-minute stepper test will be carried out the same day (minimum 20 minute of rest between each test) for a total time frame of 1 day.
Secondary Steps during 6-minute stepper test using stepper device. The 2 6-minute stepper test will be carried out on the same day (20 minute of rest between each test) for a total time frame of 1 day.
Secondary Dyspnea using the Borg scale. Borg scale range from 0 (no breathlessness) to 10 (maximal breathlessness) Dyspnea will be assessed at the end of every tests for a total time frame of 2 hours.
Secondary Lower limb fatigue using the Borg scale. Borg scale range from 0 (no breathlessness) to 10 (maximal breathlessness) Lower limb fatigue will be assessed at the end of every tests for a total time frame of 2 hours.
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