Effects of interval training on risk markers for arrhythmic death: a randomized controlled trial.
Clin Rehabil
; 33(8): 1320-1330, 2019 Aug.
Article
em En
| MEDLINE
| ID: mdl-30977397
ABSTRACT
OBJECTIVE:
To compare the effects of high-intensity interval training versus moderate-intensity continuous training on risk markers of arrhythmic death in patients who recently suffered from an acute coronary syndrome.DESIGN:
Double-blind (patient and evaluator) randomized controlled trial.SETTING:
Cardiovascular Prevention and Rehabilitation Centre (EPIC Centre) of the Montreal Heart Institute, Montreal, Canada.SUBJECTS:
A total of 43 patients were randomized following an acute coronary syndrome.INTERVENTIONS:
Patients were assigned to either high-intensity interval training (n = 18) or isocaloric moderate-intensity continuous training (n = 19), three times a week for a total of 36 sessions. MAINMEASURES:
Heart rate recovery for 5 minutes, heart rate variability for 24 hours, occurrence of ventricular arrhythmias, and QT dispersion were measured before and after the 36 sessions of training.RESULTS:
Among the 43 patients randomized, 6 participants in the high-intensity interval training group stopped training for reasons unrelated to exercise training and were excluded from the analyses. Heart rate recovery improved solely in the high-intensity interval training group, particularly at the end of recovery period (p < 0.05). There were no differences in heart rate variability, occurrence of ventricular arrhythmias, or QT dispersion parameters between the groups at study end.CONCLUSION:
Despite the lack of power to detect any large difference between the two interventions with respect to risk markers of arrhythmic death, high-intensity interval training appears safe and may be more effective at improving heart rate recovery relative to moderate-intensity continuous training in our patients following acute coronary syndrome.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Síndrome Coronariana Aguda
/
Condicionamento Físico Humano
/
Treinamento Intervalado de Alta Intensidade
/
Frequência Cardíaca
Tipo de estudo:
Clinical_trials
/
Etiology_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Clin Rehabil
Assunto da revista:
REABILITACAO
Ano de publicação:
2019
Tipo de documento:
Article
País de afiliação:
Canadá