scholarly journals Comparative Effects of High-Intensity Interval Training vs Moderate-Intensity Continuous Training in Phase III of a Tennis-Based Cardiac Rehabilitation Program: A Pilot Randomized Controlled Trial

2020 ◽  
Vol 12 (10) ◽  
pp. 4134
Author(s):  
Santos Villafaina ◽  
María José Giménez-Guervós Pérez ◽  
Juan Pedro Fuentes-García
Keyword(s):  
Heart Rate ◽  
Cardiac Rehabilitation ◽  
Controlled Trial ◽  
Interval Training ◽  
Rehabilitation Program ◽  
Moderate Intensity ◽  
P Value ◽  
Continuous Training ◽  
Coronary Syndrome ◽  
Rehabilitation Programs

The aim of the present study was to investigate the effects of two tennis-based cardiac rehabilitation programs using two protocols: high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) in the body composition, physical fitness, heart rate variability, and health-related quality of life. It was performed as a single-blinded randomized controlled trial of 21 people with acute coronary syndrome. The 12-week cardiac rehabilitation program consisted of three sessions per week of 60 min with the main part consisting of 10 sets of 15 s with 15 s of active recovery at 85%–90% of their maximum heart rate or 40 min at 70%–85% of their maximum heart rate in the HIIT and the MICT groups, respectively. Results show that both cardiac rehabilitation programs improved the agility and the mental components of the health-related quality of life (p-value < 0.05). The HIIT protocol also showed a significant improvement in the flexibility of upper and lower limbs (p-value < 0.05). Moreover, significant group × time interaction was found in the handgrip strength in favor of the HIIT group (p-value = 0.035). Nevertheless, no significant effects on cardiorespiratory fitness or heart rate variability were found. Importantly, no adverse event was detected, so HIIT appears to be a safe and effective alternative for the rehabilitation of patients with acute coronary syndrome.

Effects of interval training on risk markers for arrhythmic death: a randomized controlled trial

2019 ◽  
Vol 33 (8) ◽  
pp. 1320-1330 ◽  
Author(s):  
Maxime Boidin ◽  
Mathieu Gayda ◽  
Christine Henri ◽  
Doug Hayami ◽  
Lukas D Trachsel ◽  
...  
Keyword(s):  
Heart Rate ◽  
Acute Coronary Syndrome ◽  
High Intensity ◽  
Heart Rate Recovery ◽  
Interval Training ◽  
Moderate Intensity ◽  
High Intensity Interval Training ◽  
Continuous Training ◽  
Coronary Syndrome ◽  
High Intensity Interval

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. Main measures: 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.

scholarly journals The Effects of High-Intensity Interval Training vs. Moderate-Intensity Continuous Training on Heart Rate Variability in Physically Inactive Adults

2018 ◽  
Vol 15 (7) ◽  
pp. 1508 ◽  
Author(s):  
Abdullah Alansare ◽  
Ken Alford ◽  
Sukho Lee ◽  
Tommie Church ◽  
Hyun Jung
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
High Intensity ◽  
Interval Training ◽  
Moderate Intensity ◽  
High Intensity Interval Training ◽  
Continuous Training ◽  
Significant Interaction Effect ◽  
High Intensity Interval ◽  
Physically Inactive

Physically inactive adults are prevalent worldwide. This study compared the effects of short-term high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) on heart rate variability (HRV) in physically inactive adults as a preliminary study. Thirteen physically inactive male adults (27.5 ± 3.80 years) were randomly assigned to HIIT (N = 7) or MICT (N = 6). The HIIT program consisted of 20 min of interval training with cycling to rest ratio of 10/50 s at ≥90% HRpeak, while the MICT program consisted of 40 min of continuous cycling at 60–75% HRpeak. Both groups completed eight sessions of training within two weeks. Time and frequency domains of HRV were measured for 20 min with Actiwave-Cardio monitor (CamNtech, UK). The number of R-R interval and inter-beat interval (IBI) were significantly improved (p < 0.05) in both HIIT and MICT programs following eight sessions of training. A significant interaction effect for group by time was found in the lnLF/HF ratio (p < 0.05) where it was only improved in the HIIT group from pre- to post-test. The HIIT program is superior to MICT in improving HRV in physically inactive adults. The HIIT program can be applied as a time-efficient program for improving cardiac-autoregulation.

scholarly journals Sprint Interval Running and Continuous Running Produce Training Specific Adaptations, Despite a Similar Improvement of Aerobic Endurance Capacity—A Randomized Trial of Healthy Adults

2020 ◽  
Vol 17 (11) ◽  
pp. 3865
Author(s):  
Sigbjørn Litleskare ◽  
Eystein Enoksen ◽  
Marit Sandvei ◽  
Line Støen ◽  
Trine Stensrud ◽  
...  
Keyword(s):  
Heart Rate ◽  
Interval Training ◽  
Sprint Performance ◽  
Running Economy ◽  
Moderate Intensity ◽  
Endurance Capacity ◽  
Sprint Interval Training ◽  
Continuous Training ◽  
Before And After ◽  
Shuttle Run

The purpose of the present study was to investigate training-specific adaptations to eight weeks of moderate intensity continuous training (CT) and sprint interval training (SIT). Young healthy subjects (n = 25; 9 males and 16 females) performed either continuous training (30–60 min, 70–80% peak heart rate) or sprint interval training (5–10 near maximal 30 s sprints, 3 min recovery) three times per week for eight weeks. Maximal oxygen consumption, 20 m shuttle run test and 5·60 m sprint test were performed before and after the intervention. Furthermore, heart rate, oxygen pulse, respiratory exchange ratio, lactate and running economy were assessed at five submaximal intensities, before and after the training interventions. Maximal oxygen uptake increased after CT (before: 47.9 ± 1.5; after: 49.7 ± 1.5 mL·kg−1·min−1, p < 0.05) and SIT (before: 50.5 ± 1.6; after: 53.3 ± 1.5 mL·kg−1·min−1, p < 0.01), with no statistically significant differences between groups. Both groups increased 20 m shuttle run performance and 60 m sprint performance, but SIT performed better than CT at the 4th and 5th 60 m sprint after the intervention (p < 0.05). At submaximal intensities, CT, but not SIT, reduced heart rate (p < 0.05), whereas lactate decreased in both groups. In conclusion, both groups demonstrated similar improvements of several performance measures including VO2max, but sprint performance was better after SIT, and CT caused training-specific adaptations at submaximal intensities.

scholarly journals Cardiorehabilitation of Patients with Acute Coronary Syndrome Who Were Performed Coronary Arteries Revascularization

2017 ◽  
Vol 24 (4) ◽  
Author(s):  
Mykola Shved ◽  
Lesja Tsuglevych ◽  
Iryna Kyrychok ◽  
Tetiana Boiko ◽  
Larysa Levutska
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Acute Coronary Syndrome ◽  
Coronary Artery ◽  
Cardiac Rehabilitation ◽  
Rehabilitation Program ◽  
Left Ventricular ◽  
Cardiac Rehabilitation Program ◽  
Coronary Artery Revascularization ◽  
Coronary Syndrome

In patients with acute coronary syndrome who were performed coronary arteries’ revascularization, in the postoperative period disorders of hemodynamics and heart rate variability often develop. The aim of our work was to optimize the cardiac rehabilitation of such patients by individualization of physical activity depending on the state of systolic and diastolic left ventricular dysfunction and heart rate variability.                 40 patients with acute coronary syndrome and coronary artery revascularization were included into the experimental group. The control group consisted of 20 patients of the same age, clinical and laboratory manifestations of ACS who were treated according to the protocol of Ministry of Health of Ukraine. In both groups of patients clinical efficacy of cardiac rehabilitation process was evaluated according to the dynamics of clinical symptoms, systolic and diastolic left ventricular function and heart rate variability.                 In patients with acute coronary syndrome and coronary artery revascularization in the initial state the clinical and laboratory signs of myocardial ischemia disappear, but subclinical and clinical manifestations of heart failure remain.                 During the first month of training, the original accelerated cardiac rehabilitation program leads to the decrease of systolic and diastolic signs of cardiac dysfunction and improves heart rate variability, which significantly improves the quality of life of these patients.                 For monitoring the efficacy and safety of the performance of cardiac rehabilitation program in patients with acute coronary syndrome and coronary artery revascularization, in addition to conventional methods (determination of heart rate, blood pressure, 6-minute test), it is useful to diagnose subclinical stage of heart failure by examination of systolic, diastolic function and vegetative regulation.

High-Intensity Interval Versus Moderate-Intensity Continuous Training in Cardiac Rehabilitation

2020 ◽  
Vol 9 (1) ◽  
pp. 10-16
Author(s):  
Dalynn T. Badenhop ◽  
Meghan M. Long ◽  
C. Matt Laurent ◽  
K. Todd Keylock
Keyword(s):  
Cardiac Rehabilitation ◽  
Functional Capacity ◽  
High Intensity ◽  
Rehabilitation Program ◽  
Moderate Intensity ◽  
Phase 2 ◽  
Continuous Training ◽  
Exercise Tests ◽  
Significant Difference ◽  
High Intensity Interval

ABSTRACT Background: Past research has compared the effects of moderate-intensity continuous training (MCT) versus high-intensity interval training (HIIT) in phase 2 cardiac rehabilitation patients, but with conflicting results. Therefore, the purpose of this study was to evaluate if HIIT leads to greater improvements in functional capacity when compared with MCT in a group of phase 2 cardiac rehabilitation patients. Methods: Eighteen patients in a phase 2 cardiac rehabilitation program completed precardiopulmonary and postcardiopulmonary exercise tests, a 12-min walk test (12MWT), and resting blood pressure (BP). After 2 weeks of run-in, patients were randomly assigned to 10 weeks of HIIT (alternating periods of 80%–90% heart rate [HR] reserve and 60%–70% HR reserve) or MCT (60%–80% HR reserve) exercise group. Changes in VO2 peak, 12MWT distance, and BP (mm Hg) were analyzed by independent t test. Results: The average patient was 65 years old, 1.75 m tall, and overweight. VO2 peak values improved for individuals in both exercise modalities. There was no significant difference between the exercise groups (P = 0.174). In addition, both groups improved their 12MWT distance, resting systolic, and diastolic BP (DBP), with no significant difference in improvements between the 2 exercise groups. Conclusion: In this study, HIIT was not more effective than MCT for improving functional capacity in a group of phase 2 cardiac rehabilitation patients. However, since HIIT was equally effective compared with MCT in several measures, it provides another option for exercise prescription to the traditional prescription for this population.

scholarly journals Acute effects of high-intensity interval training and moderate-intensity continuous training on linear and nonlinear heart rate variability measures in arterial hypertension

2021 ◽  
Vol 10 (7) ◽  
pp. e47110712106
Author(s):  
Fabrício Olinda de Souza Mesquita ◽  
Pamela Beatriz Pereira da Silva ◽  
Herculano Ribeiro da Silva Neto ◽  
Sérgio Rodrigues Moreira ◽  
Dário Celestino Sobral Filho ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Arterial Hypertension ◽  
Interval Training ◽  
Moderate Intensity ◽  
High Intensity Interval Training ◽  
Acute Effects ◽  
Continuous Training ◽  
Linear And Nonlinear ◽  
High Intensity Interval

Introduction: Systemic arterial hypertension is a chronic disease worldwide. High-intensity interval training (HIIT) has been described as an effective alternative treatment. Objective: To evaluate the acute effects of one HIIT session versus one moderate-intensity continuous training (MICT) on linear and nonlinear heart rate variability (HRV) measures in hypertension patients. Methods: A preliminary cross-sectional study with 11 non-elderly (35 to 59 years) hypertensive patients using drug therapy from both sexes. They were assigned for cardiological evaluation, ergometric test, echocardiography, and cardiopulmonary exercise test. Patients performed cycling exercise in the conditions HIIT (10 bouts of 1-minute at 85% of the maximum power [Pmax] interspersed with 2 minutes at 50% of Pmax) and MICT (30 minutes at 50% of Pmax). R-R intervals (RRi) of HRV were recorded in the supine position for 10 minutes before and after the two exercise conditions. Results: HIIT and MICT presented a significant reduction (P<0.01) for the RRi between baseline (pre-session) and post-session. All other linear indices presented similar results (P>0.05) between moments. Significant differences (P<0.05) in the symbolic HRV analysis were identified only in the HIIT group for 0V, 2LV, and 2ULV indexes. 0V index increased 2.3-times from pre- to post-session while 2LV and 2ULV indexes reduced to near 50% and 35%, respectively. Conclusion: An increase in sympathetic modulation with a significant decrease in vagal modulation by nonlinear HRV measures was identified in patients with hypertension submitted to one HIIT session.

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