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Clinical Trial Details — Status: Terminated

Administrative data

NCT number NCT02235753
Other study ID # 1072011
Secondary ID
Status Terminated
Phase N/A
First received September 3, 2014
Last updated January 23, 2017
Start date December 2014
Est. completion date December 2019

Study information

Verified date December 2015
Source Kuopio Research Institute of Exercise Medicine
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Despite the well-known health benefits of physical exercise in the prevention of chronic diseases, less attention has been focused on the use of physical exercise as an essential part of good treatment for chronic disease. The aims of the study are to investigate the feasibility, medical effects, cost-effectiveness, and social perspectives of the individualized exercise-based rehabilitation [2 different high-intensity training (HIT) protocols combined with usual care (UC)] after acute coronary artery disease (CAD) event. The medical aim is to study mediating mechanisms of the physiological, biochemical and molecular effects of exercise training on the clinical outcomes. The aim of the health-economic evaluation is to assess the changes in the Health-Related Quality of Life (HRQL) and health care related costs for estimating the cost-effectiveness of HIT-based exercise rehabilitation. The purpose of the sociological analysis is to find out the social processes which make possible the emergence of the desired welfare effects.


Description:

The study population consists of patients living in the city of Kuopio or Siilinjarvi area in Eastern Finland, who have been treated in Kuopio University Hospital because of acute CAD event. After baseline measurements, the patients will be randomized into one of the 3 groups: short interval HIT protocol (HIT-S), long interval HIT protocol (HIT-L) or UC group. The intervention will be 12 months per patient and the expected duration of the whole study (intervention data collection) is estimated to be 4 years. In addition, all groups will have annual follow-up examinations scheduled up to 60 months after initiation of the intervention phase. The patients recruited for the study will be 750, a total of 250 patients per study group.

All measurements related to intervention will be performed at Kuopio Research Institute of Exercise Medicine. Examinations concerning myocardial structure and perfusion will be done at Turku PET Center (subsample).

The study complies with the Helsinki declaration, follows good clinical practice. Patient safety will follow normal medical practice. The intervention is not anticipated to cause health risks apart from the conventional treatment. All participants will be provided with diverse individualized information about their health and physical performance. The research methods employed in the study are safe. Physician and nurse will be present at each occasion when physically strenuous measurements are performed and careful provisions for appropriate first aid will be made. The measurements assessing cardiorespiratory and muscular fitness will involve hard effort and it is not unusual to feel innocent muscle pain for a few days after measurements demanding maximal effort. The other potential acute complications may include accidents (e.g. injuries due to slipping or falling) and medical emergencies like acute myocardial infarction.

Study hypotheses:

1. Short (15 sec) and long interval (3 min) high-intensity aerobic interval training (HIT) combined with resistance training after acute CAD event are equally effective in improving cardiorespiratory fitness compared with UC.

2. Despite higher unit costs, the differences in health-related quality of life effects are so large that both HIT interventions are cost-effective compared with UC.

3. Patient's experiences and interpretation of HIT exercise as well as different social processes during rehabilitation explain the cost-effectiveness of the rehabilitation.

4. Patient groups who will or will not benefit of HIT interventions can be identified and predicted.


Recruitment information / eligibility

Status Terminated
Enrollment 27
Est. completion date December 2019
Est. primary completion date November 14, 2016
Accepts healthy volunteers No
Gender All
Age group 40 Years to 80 Years
Eligibility Inclusion Criteria:

- hospital care after acute CAD event (ICD-10 codes I20.0-I22)

- age 40-80 years

- signed informed consent form

Exclusion Criteria:

- conditions preventing regular exercise training

- severe/malignant disease (life expectancy <12 months)

Study Design


Intervention

Behavioral:
High-intensity aerobic interval training, short interval
The intensity of HIT-S sessions (cycle ergometer) will be increased during 3 to 6 months from 60% of VO2peak to 100% which will be the target intensity from 6 to 12 months. The protocol includes four 6 min sets consisting of 15 sec exercise followed by 15 sec passive recovery separated with 3 min passive recovery between sets. Exercise session will last ca. 40 min, with 12 min of HIT, warm-up and recovery. The intensity of the 15 seconds exercise bouts will be based on VO2peak at baseline and after 6 months. Meanwhile, the estimated VO2peak from the submaximal test will be used to adjust the training intensity in HIT sessions. Training will be conducted in a group of 1-3 HIT-S patients with ECG monitoring and supervised by physician.
High-intensity aerobic interval training, long interval
The intensity of HIT-L sessions (cycle ergometer) will be increased during 3 to 6 months from 60% of VO2peak to 90% which will be the target intensity from 6 to 12 months. The protocol includes four 3 min exercise bouts with a 4 min recovery (pedaling at 0 W) between bouts. Exercise session will last ca. 40 min, with 12 min of HIT, warm-up and recovery. The intensity of the 3 min exercise bouts will be based on VO2peak at baseline and after 6 months. Meanwhile, the estimated VO2peak from the submaximal test will be used to adjust the training intensity in HIT sessions. Training will be conducted in a group of 1-3 HIT-L patients with ECG monitoring and supervised by physician.

Locations

Country Name City State
Finland Kuopio Research Institute of Exercise Medicine Kuopio

Sponsors (5)

Lead Sponsor Collaborator
Kuopio Research Institute of Exercise Medicine Kuopio University Hospital, Social Insurance Institution, Finland, University of Basel, University of Eastern Finland

Country where clinical trial is conducted

Finland, 

Outcome

Type Measure Description Time frame Safety issue
Other Change in ergospirometer variables Baseline, 6 and 12 months
Other Change in muscular performance Baseline, 6 and 12 months
Other Change in daily energy expenditure Baseline, 6 and 12 months
Other Sleeping time Baseline, 6 and 12 months
Other Sitting time Baseline, 6 and 12 months
Other Dietary habits Measured by food frequency questionnaire Baseline, 6 and 12 months
Other Change in chest pain symptoms, exercise induced angina or ischemia Composite measure based on anamnesis and ECG Baseline, 6 and 12 months
Other Change in antianginal and other medication Baseline, 6 and 12 months
Other Hospitalization due to cardiovascular causes Baseline, 6 and 12 months
Other Change in vascular risk factors Baseline, 6 and 12 months
Other Progression of peripheral atherosclerosis Baseline, 6 and 12 months
Other Change in cognitive function Baseline and 12 months
Other Change in depressive symptoms Baseline, 6 and 12 months
Other Intervention related adverse events Throughout the intervention phase
Other Change in myocardial blood flow capacity and left ventricular function Baseline and 12 months
Other Change in myocardial blood flow at rest and during adenosine infusion Baseline and 12 months
Other Change in myocardial blood flow reserve Baseline and 12 months
Other Change in left ventricular ejection fraction Baseline and 12 months
Other Change in left ventricular longitudinal peak systolic strain Baseline and 12 months
Other Change in left mitral annular diastolic tissue velocity Baseline and 12 months
Other Change in autonomic nervous system control of cardiac function Baseline and 12 months
Other Change in body composition Measured by bioimpedance Baseline, 6 and 12 months
Other Change in anthropometric measures Measured by body weight, body height, waist circumference, and hip circumference.
Body mass index and waist to hip ratio will be calculated.
Baseline, 6 and 12 months
Other All-cause death Baseline, 6 and 12 months; annual follow-up up to 60 months
Other Cardiovascular death Baseline, 6 and 12 months; annual follow-up up to 60 months
Primary Change in cardiorespiratory fitness as assessed by peak oxygen uptake (VO2peak) Baseline, 6 and 12 months
Secondary Incremental health care cost/quality-adjusted life-year-relation Baseline, 6 and 12 months
Secondary Social processes explaining adherence and motivation to exercise rehabilitation Social analysis will be performed by specific questionnaires and interviews. Subjective perceptions on the social mechanisms impacting on health and well-being as a part of the rehabilitation processes will be also be modelled using comparative causal mapping techniques (CMT) (See http://www.uef.fi/fi/cmap3). Baseline, 6 and 12 months
Secondary Total costs of the use of health care services The use of total health services will be assessed by diary, questionnaire and from registers (national, hospital district and domicile health center). Baseline, 6 and 12 months
Secondary Utilization of health care resources Baseline, 6 and 12 months
Secondary Change in health-related quality of life Baseline, 6 and 12 months
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