The Effect of Two Exercise Training Protocols on Physiological and Biochemical Parameters in Congestive Heart Failure
The aim of the present study is to evaluate differential lactate removal kinetics in heart failure patients that are trained according to 2 different exercise protocols:
(A) High intensity intervals training (HIT); (B) Continuous moderate aerobic training (MAT)
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
Gedetailleerde beschrijving
Introduction: Congestive heart failure (CHF) patients suffer from early fatigue and functional aerobic impairment. Their reduced cardiac output and O2 delivery to the peripheral muscles shifts those patients consistent anaerobic metabolism, thus, CHF patients rely on anaerobic metabolism even in everyday life activity. This metabolism leads to a shift of muscles fiber types from mainly slow twitch, oxidative type I fibers to fast twitch, glycolytic type IIb fibers. Monocarboxylate proteins MCT1 and MCT4 transport lactate crosses the membrane. MCT1 is responsible for the lactate uptake and MCT4 is responsible for efflux of excess lactate. Exercise training is known to improve the quality of life in CHF. We hypothesized that exercise training might change MCT1 and 4 expression and distribution. Accordingly, these changes may also affect lactate clearance during recovery, which may contribute to the beneficial effect of exercise training in CHF patients. Methods: New-York Heart association (NYHA) class II-III CHF patients will be assigned to the experiment. At baseline and upon training conclusion they will undergo the same tests battery. The test battery includes heart rate, blood pressure measurements, echocardiographic evaluation. All participants will fill out "Minnesota living with heart failure" questionnaire. Subsequently, after their basal blood lactate will be assessed they will undergo measurement which will be followed by lactate clearance-rate evaluation.
Randomly each patient will then be assigned to one of two experimental training groups: (A) High intensity intervals training (HIT); (B) Continuous moderate aerobic training (MAT). Each volunteer will be trained twice a week for 12 weeks, according to his/hers assigned training protocol and in accordance to exercise training guidelines.
Studietype
Studietype
Inschrijving (Werkelijk)
Inschrijving
Fase
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
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Tel Hashomer , Ramat Gan, Israël
- Sheba Medical Center, Cardiac Rehabilitation Institute
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Kind
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Stable heart failure patients referred to exercise training in a tertiary care cardiac rehabilitation institute
- Age > 21
Exclusion Criteria:
- Severe symptomatic heart failure
- Severe orthopedic limitations
- Unstable arrythmia
- Cognitive decline or substance abuse
- Unable to comply with exercise protocol
- Significant pulmonary disease
- NYHA 4 heart failure class
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Fundamentele wetenschap
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Geen (open label)
Aantal wapens
Wapens en interventies
Deelnemersgroep / ArmDeelnemersgroep / Arm |
Interventie / BehandelingInterventie / Behandeling |
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Actieve vergelijker: Continues aerobic training
Treadmill or exercise bike training with target heart rate of 50-70% of the heart rate reserve (or 50-60% of the peak VO2 reserve).
Overall 45 minutes of exercise (including the 5-10 minute warm-up period).
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Experimenteel: Interval Exercse Training
Bouts of high intensity interval treadmill or exercise bike training, comprising of 85-95% of the heart rate reserve (or 80-90% of the peak VO2 reserve), for the duration of 4 minutes, separated by periods of low intensity activity until the heart rate reaches 50% of the peak heart rate.
This set will be repeated 3 times.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Lactate clearance kinetics
Tijdsspanne: Baseline and following 12 weeks of training
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Change from baseline of lactate clearance kinetics followoing a 12 weeks exercise program based on two different training protocol (continues and interval training)
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Baseline and following 12 weeks of training
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Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Peak VO2 change
Tijdsspanne: Pre- and post 12 week exercise program
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Change from baseline of the peak VO2 following the 12 weeks exercise program
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Pre- and post 12 week exercise program
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Andere uitkomstmaten
Andere uitkomstmaten
Uitkomstmaat |
Tijdsspanne |
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Quality of life questioner (MLWHF)
Tijdsspanne: Pre training and 12 weeks later post exercise training period
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Pre training and 12 weeks later post exercise training period
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Medewerkers en onderzoekers
Sponsor
Sponsor
Studie record data
Bestudeer belangrijke data
Studie start
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Schatting)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
Andere studie-ID-nummers
- LACT_HF_KIN
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