Cardiac rehabilitation in the paediatric Fontan population: development of a home-based high-intensity interval training programme

AbstractIntroduction:We evaluated the safety and feasibility of high-intensity interval training via a novel telemedicine ergometer (MedBIKE™) in children with Fontan physiology.Methods:The MedBIKE™ is a custom telemedicine ergometer, incorporating a video game platform and live feed of patient video/audio, electrocardiography, pulse oximetry, and power output, for remote medical supervision and modulation of work. There were three study phases: (I) exercise workload comparison between the MedBIKE™ and a standard cardiopulmonary exercise ergometer in 10 healthy adults. (II) In-hospital safety, feasibility, and user experience (via questionnaire) assessment of a MedBIKE™ high-intensity interval training protocol in children with Fontan physiology. (III) Eight-week home-based high-intensity interval trial programme in two participants with Fontan physiology.Results:There was good agreement in oxygen consumption during graded exercise at matched work rates between the cardiopulmonary exercise ergometer and MedBIKE™ (1.1 ± 0.5 L/minute versus 1.1 ± 0.5 L/minute, p = 0.44). Ten youth with Fontan physiology (11.5 ± 1.8 years old) completed a MedBIKE™ high-intensity interval training session with no adverse events. The participants found the MedBIKE™ to be enjoyable and easy to navigate. In two participants, the 8-week home-based protocol was tolerated well with completion of 23/24 (96%) and 24/24 (100%) of sessions, respectively, and no adverse events across the 47 sessions in total.Conclusion:The MedBIKE™ resulted in similar physiological responses as compared to a cardiopulmonary exercise test ergometer and the high-intensity interval training protocol was safe, feasible, and enjoyable in youth with Fontan physiology. A randomised-controlled trial of a home-based high-intensity interval training exercise intervention using the MedBIKE™ will next be undertaken.

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Effect of Repeated Active Recovery During a High-Intensity Interval-Training Shock Microcycle on Markers of Fatigue

International Journal of Sports Physiology and Performance ◽

10.1123/ijspp.2015-0494 ◽

2016 ◽

Vol 11 (8) ◽

pp. 1060-1066 ◽

Cited By ~ 14

Author(s):

Thimo Wiewelhove ◽

Christian Raeder ◽

Tim Meyer ◽

Michael Kellmann ◽

Mark Pfeiffer ◽

...

Keyword(s):

High Intensity ◽

Training Session ◽

Interval Training ◽

High Intensity Interval Training ◽

Active Recovery ◽

Junior Tennis ◽

International Ranking ◽

Repeated Use ◽

High Intensity Interval ◽

Recovery Act

Purpose:To investigate the effect of repeated use of active recovery during a 4-d shock microcycle with 7 high-intensity interval-training (HIT) sessions on markers of fatigue. Methods:Eight elite male junior tennis players (age 15.1 ± 1.4 y) with an international ranking between 59 and 907 (International Tennis Federation) participated in this study. After each training session, they completed 15 min of either moderate jogging (active recovery [ACT]) or passive recovery (PAS) with a crossover design, which was interrupted by a 4-mo washout period. Countermovement-jump (CMJ) height, serum concentration of creatine kinase (CK), delayed-onset muscle soreness (DOMS), and perceived recovery and stress (Short Recovery and Stress Scale) were measured 24 h before and 24 h after the training program. Results:The HIT shock microcycle induced a large decrease in CMJ performance (ACT: effect size [ES] = –1.39, P < .05; PAS: ES = –1.42, P < .05) and perceived recovery (ACT: ES = –1.79, P < .05; PAS: ES = –2.39, P < .05), as well as a moderate to large increase in CK levels (ACT: ES = 0.76, P > .05; PAS: ES = 0.81, P >.05), DOMS (ACT: ES = 2.02, P < .05; PAS: ES = 2.17, P < .05), and perceived stress (ACT: ES = 1.98, P < .05; PAS: ES = 3.06, P < .05), compared with the values before the intervention. However, no significant recovery intervention × time interactions or meaningful differences in changes were noted in any of the markers between ACT and PAS. Conclusions:Repeated use of individualized ACT, consisting of 15 min of moderate jogging, after finishing each training session during an HIT shock microcycle did not affect exercise-induced fatigue.

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Technical feasibility of constant-load and high-intensity interval training for cardiopulmonary conditioning using a re-engineered dynamic leg press

BMC Biomedical Engineering ◽

10.1186/s42490-019-0025-9 ◽

2019 ◽

Vol 1 (1) ◽

Author(s):

Farouk Chrif ◽

Tobias Nef ◽

Kenneth J Hunt

Keyword(s):

High Intensity ◽

Ventilatory Threshold ◽

Interval Training ◽

Constant Load ◽

Work Rate ◽

High Intensity Interval Training ◽

Leg Press ◽

Cardiopulmonary Exercise ◽

The Difference ◽

High Intensity Interval

Abstract Background Leg-press devices are one of the most widely used training tools for musculoskeletal strengthening of the lower-limbs, and have demonstrated important cardiopulmonary benefits for healthy and patient populations. Further engineering development was done on a dynamic leg-press for work-rate estimation by integrating force and motion sensors, power calculation and a visual feedback system for volitional work-rate control. This study aimed to assess the feasibility of the enhanced dynamic leg press for cardiopulmonary exercise training in constant-load training and high-intensity interval training. Five healthy participants aged 31.0±3.9 years (mean ± standard deviation) performed two cardiopulmonary training sessions: constant-load training and high-intensity interval training. Participants carried out the training sessions at a work rate that corresponds to their first ventilatory threshold for constant-load training, and their second ventilatory threshold for high-intensity interval training. Results All participants tolerated both training protocols, and could complete the training sessions with no complications. Substantial cardiopulmonary responses were observed. The difference between mean oxygen uptake and target oxygen uptake was 0.07±0.34 L/min (103 ±17%) during constant-load training, and 0.35±0.66 L/min (113 ±27%) during high-intensity interval training. The difference between mean heart rate and target heart rate was −7±19 bpm (94 ±15%) during constant-load training, and 4.2±16 bpm (103 ±12%) during high-intensity interval training. Conclusions The enhanced dynamic leg press was found to be feasible for cardiopulmonary exercise training, and for exercise prescription for different training programmes based on the ventilatory thresholds.

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Effects of a high-intensity interval training session and chocolate milk on appetite and cognitive performance in youth aged 9–13 years

European Journal of Clinical Nutrition ◽

10.1038/s41430-020-00718-z ◽

2020 ◽

Author(s):

Michaela Kucab ◽

Nick Bellissimo ◽

Cydney Prusky ◽

Neil R. Brett ◽

Julia O. Totosy de Zepetnek

Keyword(s):

Cognitive Performance ◽

High Intensity ◽

Training Session ◽

Interval Training ◽

Chocolate Milk ◽

High Intensity Interval Training ◽

High Intensity Interval

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High-Intensity Interval Training for Improvement of Overhand Throwing Velocity

International Journal of Athletic Therapy & Training ◽

10.1123/ijatt.2013-0046 ◽

2014 ◽

Vol 19 (1) ◽

pp. 36-40 ◽

Cited By ~ 2

Author(s):

Meaghan E. Maddigan ◽

David G. Behm ◽

Glen R. Belfry

Keyword(s):

Oxygen Consumption ◽

Outcome Measures ◽

High Intensity ◽

Training Session ◽

Interval Training ◽

Control Group ◽

High Intensity Interval Training ◽

Overhand Throwing ◽

High Intensity Interval ◽

Experimental Group

Context:High intensity interval training (HIIT) has been shown to improve muscle power and endurance, as well as aerobic power.Objective:To assess the effects of HIIT that utilizes resistive elastic bands to improve overhand throwing velocity.Participants:Healthy female volunteers (n = 13) ranging in age from 18–29 years.Interventions:Participants were randomly assigned to either a control group or an experimental group that exercised 3 days per week for 3 weeks. Each training session involved performance of 5 sets of 20 throwing motions against elastic band resistance, which was performed by both extremities.Main Outcome Measures:Maximal oxygen consumption was measured during performance of a graded exercise test that utilized an upper extremity cycle ergometer. A radar gun was used to assess peak throwing velocity and the extent to which throwing velocity was sustained during performance of a 20-throw endurance test.Results:After completing the training, the experimental group exhibited faster peak throwing velocity (61.6 ± 6.6 km/hr to 63.2 ± 8.6 km/hr) and a reduced fatigue index (1.18 ± 0.16 to 1.01 ± 0.02). Training also resulted in a 14% improvement in maximum oxygen consumption (1.40 ± 0.46 L/min to 1.60 ± 0.49 L/ min) and longer time to fatigue (9.99 ± 1.84 min to 11.43 ± 2.29 min).Conclusion:The high-intensity interval training program was effective for improvement of overhand throwing performance.

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Acute Hormonal Responses to High-Intensity Interval Training in Hyperoxia

Journal of Human Kinetics ◽

10.2478/hukin-2019-0137 ◽

2020 ◽

Vol 73 (1) ◽

pp. 125-134

Author(s):

Giorgio Manferdelli ◽

Nils Freitag ◽

Kenji Doma ◽

Anthony C Hackney ◽

Hans-Georg Predel ◽

...

Keyword(s):

Power Output ◽

High Intensity ◽

Training Session ◽

Interval Training ◽

High Intensity Interval Training ◽

Single Session ◽

Maximal Power ◽

Maximal Power Output ◽

Hormonal Responses ◽

High Intensity Interval

AbstractThis study aimed to compare selected hormonal responses to a single session of high intensity interval training performed with an increased fraction of inspired oxygen (hyperoxia) and under normoxic conditions. Twelve recreationally trained men (age 24 ± 3 years) performed two sessions of high intensity interval training on a cycle ergometer, in randomized order with hyperoxia (4 L·min-1 with a flowrate of 94% O2) and normoxia. Each session consisted of 5 intervals of 3 minutes at 85% of the maximal power output, interspersed by 2 min at 40% of the maximal power output. Serum cortisol, prolactin and vascular endothelial growth factor (VEGF) were assessed both before and immediately after each high intensity interval training session. Statistically significant differences in cortisol were found between hyperoxic and normoxic conditions (p = 0.011), with a significant increase in hyperoxia (61.4 ± 73.2%, p = 0.013, ES = -1.03), but not in normoxia (-1.3 ± 33.5%, p > 0.05, ES = 0.1). Prolactin increased similarly in both hyperoxia (118.1 ± 145.1%, p = 0.019, ES = -0.99) and normoxia (62.14 ± 75.43%, p = 0.005, ES = -0.5). VEGF was not statistically altered in either of the conditions. Our findings indicate that a single session of high intensity interval training in low-dose hyperoxia significantly increased cortisol concentrations in recreationally trained individuals compared to normoxia, while the difference was smaller in prolactin and diminished in VEGF concentrations.

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