Short and Fast Step Test: Feasibility, Validity and Tolerance of a Functional Evaluation Test of Lactic Anaerobic Capacities in Patients With Coronary Artery Disease

Study Overview
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Brief Summary
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Recommendations for cardiovascular rehabilitation (CVR) encourage exercise training, primarily involving the aerobic system, to allow patients to regain independence in daily activities. However, the lactic anaerobic process is also involved during these activities (stair climbing, carrying loads, etc.). Hence there is a major interest in accurately assessing patients' anaerobic capacities in order to tailor suitable exercise programs. However, there are no functional tests specifically dedicated to the evaluation of lactic anaerobic metabolism and adapted to people with coronary disease. The investigators offer a dedicated test, the short and fast test (SFST), which can be applied in current clinical practice and has already been evaluated in a population of healthy subjects. The purpose of this project is to evaluate the safety, feasibility and validity of SFST in a population of patients with coronary artery disease.

Official Title
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Short and Fast Step Test: Feasibility, Validity and Tolerance of a Functional Evaluation Test of Lactic Anaerobic Capacities in Patients With Coronary Artery Disease

Conditions
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Coronary Artery Disease Without Heart Failure

Intervention / Treatment
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* Other: Short and fast step test without measurement of pulmonary gas exchange
* Biological: glucose meter
* Other: ECG / heart rate
* Other: questionnaires
* Other: Short and fast step test with measurement of pulmonary gas exchange


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: - Patient who has given oral consent Adult patient (male or female) with coronary artery disease without heart failure referred for rehabilitation program Left ventricular ejection fraction (Simpson method) > 45%. Exclusion Criteria: Protected adult Patient not affiliated to a national health insurance scheme Pregnant or breastfeeding woman Orthostatic hypotension Severe obstructive heart disease aortic valve narrowing Progressive severe cardiac rhythm or conduction disorders not requiring a device, detected during the initial stress test. intracavitary cardiac thrombus severe pulmonary arterial hypertension (systolic pulmonary hypertension >70mmHg) recent venous thromboembolic history (last 3 months) heart transplantation associated medical condition that can predominantly impair functional and respiratory capacities (examples: unstabilized metabolic disorders such as progressive renal failure, significant asthenia related to a severe unstabilized condition such as neoplasia, systemic disease, chronic obstructive pulmonary disease...) physical impairments of the lower limbs hindering the test, whether neurological (central or peripheral), arterial (in particular, arteriopathy of the lower limbs with systolic index < 0.6) or orthopedic (degenerative or inflammatory rheumatism) Treatment with Corticosteroids, Anabolics, or L-Carnitine.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Patients<br> | Other: Short and fast step test without measurement of pulmonary gas exchange<br>* For one minute, the patient should climb up and down a 17.5 cm high step as quickly as possible while holding onto a bar in front of the step.<br>Biological: glucose meter<br>* glucose meter to measure lactatemia<br>Other: ECG / heart rate<br>* ECG and heart rate (HR) collection by telemetry<br>Other: questionnaires<br>* VAS pain assessment and evaluation of effort perception according to Borg's scale<br>Other: Short and fast step test with measurement of pulmonary gas exchange<br>* For one minute, the patient should climb up and down a 17.5 cm high step as quickly as possible while holding onto a bar in front of the step.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| percentage of patients who completed the SFST without complications | - Absence of muscular or bone-joint disorders quantified according to the VAS. The exercise will be considered as not tolerated if pain is reported during the test and/or at day 3 (VAS≥6). AND no falls or stumbling related trauma AND absence of cardiovascular or blood pressure events: Hypertension (systolic pressure greater than 250 mmHg (O'Brien et al. 2005) or hypotension with clinical consequences (malaise or feeling unwell) Discomfort, chest pain, onset of vascular claudication Rhythm or conduction disorders or repolarization abnormalities, at a higher frequency than that observed in the pre-inclusion stress test Abnormal increase in heart rate (greater than the maximum rate determined during the stress test). | through study completion, an average of 11 days |