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Dhissanuvach Chaikhot, Katherine Reed, Wannakarn Petroongrad, Fotios Athanasiou, Daan van Kooten, Florentina J Hettinga
Chaikhot, D, Reed, K, Petroongrad, W, Athanasiou, F, van Kooten, D, and Hettinga, FJ. Effects of an upper-body training program involving resistance exercise and high-intensity arm cranking on peak handcycling performance and wheelchair propulsion efficiency in able-bodied men. J Strength Cond Res XX(X): 000-000, 2018-The aim of this study was to determine the training effects of an upper-body training program involving resistance exercise and high-intensity arm cranking on peak handcycling performance, propulsion efficiency, and biomechanical characteristics of wheelchair propulsion in able-bodied men...
July 17, 2018: Journal of Strength and Conditioning Research
Abdullah Alansare, Ken Alford, Sukho Lee, Tommie Church, Hyun Chul Jung
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 ...
July 17, 2018: International Journal of Environmental Research and Public Health
Beraki Abraha, Arthur R Chaves, Liam P Kelly, Elizabeth M Wallack, Katie P Wadden, Jason McCarthy, Michelle Ploughman
Objective: Evaluate intensity-dependent effects of a single bout of high intensity interval training (HIIT) compared to moderate intensity constant-load exercise (MICE) on corticospinal excitability (CSE) and effects on upper limb performance in chronic stroke. Design: Randomized cross-over trial. Setting: Research laboratory in a tertiary rehabilitation hospital. Participants: Convenience sample of 12 chronic stroke survivors. Outcome measures: Bilateral CSE measures of intracortical inhibition and facilitation, motor thresholds, and motor evoked potential (MEP) latency using transcranial magnetic stimulation...
2018: Frontiers in Physiology
Diego Warr-di Piero, Teresa Valverde-Esteve, Juan Carlos Redondo-Castán, Carlos Pablos-Abella, José Vicente Sánchez-Alarcos Díaz-Pintado
The aim of this study was to examine the impacts on blood lactate concentration, measured heart rate and assessment of perceived exertion during split sessions of equal relative load, as also their relationship to the specific sport practised. Nineteen regional-level athletes (nine middle and long-distance runners (cyclic group) and ten field-sport team players (acyclic group)) performed four high-intensity interval training (HIIT) sessions with work-interval durations of 10 s, 50 s, 90 s and 130 s. The sessions were carried out at their usual training sites with a separation of at least 48 hours...
2018: PloS One
Donghoon Lee, Ming-Hsuan Yang, Songhwai Oh
In this paper, we consider the problem of estimating the head pose and body orientation of a person from a low-resolution image. Under this setting, it is difficult to reliably extract facial features or detect body parts. We propose a convolutional random projection forest (CRPforest) algorithm for these tasks. A convolutional random projection network (CRPnet) is used at each node of the forest. It maps an input image to a high-dimensional feature space using a rich filter bank. The filter bank is designed to generate sparse responses so that they can be efficiently computed by compressive sensing...
December 18, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
N Cvetković, E Stojanović, N Stojiljković, D Nikolić, A T Scanlan, Z Milanović
This study compared the effects of recreational football and high-intensity interval training (HIIT) on body composition, muscular fitness, and cardiorespiratory fitness in overweight and obese children. Forty-two overweight/obese males aged 11-13 years [body mass index (BMI) >20.5 kg/m2 ] were randomly assigned to a recreational football training group (n = 14; 157.9 ± 5.8 cm; 63.7 ± 12.6 kg), HIIT group (n = 14; 163.8 ± 9.4 cm; 71.5 ± 10.5 kg), or nontraining control group (n = 14; 162...
July 6, 2018: Scandinavian Journal of Medicine & Science in Sports
Eduardo Martinez-Valdes, Dario Farina, Francesco Negro, Alessandro Del Vecchio, Deborah Falla
PURPOSE: Moderate-intensity continuous training (MICT) and high-intensity interval training (HIIT) are associated with different adjustments in motor output. Changes in motor unit (MU) peripheral properties may contribute to these adjustments, but this is yet to be elucidated. This study evaluated early changes in MU conduction velocity (MUCV) and MU action potential (MUAP) amplitude following two weeks of either HIIT or MICT. METHODS: Sixteen men were assigned to either an MICT or HIIT group (n=8 each), and participated in six training sessions over 14 days...
June 29, 2018: Medicine and Science in Sports and Exercise
Kyuwan Lee, Irene Kang, Joanne E Mortimer, Fred Sattler, Wendy J Mack, Lindsey Avery Fitzsimons, George Salem, Christina M Dieli-Conwright
INTRODUCTION: Cardiovascular disease (CVD) mortality is higher among breast cancer survivors (BCS) who receive chemotherapy compared with those not receiving chemotherapy. Anthracycline chemotherapy is of particular concern due to anthracycline-related impairment of vascular endothelial cells and dysregulation of the extracellular matrix. One strategy proven to offset these impairments is a form of exercise known as high-intensity interval training (HIIT). HIIT improves endothelial function in non-cancer populations by decreasing oxidative stress, the main contributor to anthracycline-induced vascular dysfunction...
June 30, 2018: BMJ Open
Stefan Hakansson, Matthew D Jones, Michael Ristov, Lauren Marcos, Tomasin Clark, Adrian Ram, Rob Morey, Aysha Franklin, Chris McCarthy, Leal De Carli, Rachel Ward, Andrew Keech
PURPOSE: To investigate the chronic and acute effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on pressure pain thresholds (PPT) in overweight males. METHODS: Twenty-eight participants performed stationary cycling exercise 3 times per week for 6 weeks. Participants were randomly allocated to HIIT (10 × 1-minute intervals at 90% peak heart rate) or MICT (30 minutes at 65-75% peak heart rate). PPTs were assessed over the rectus femoris, tibialis anterior and upper trapezius before and after the 6-week training program (chronic effect) as well as before and after the first, middle and final exercise session (acute effect)...
June 29, 2018: European Journal of Pain: EJP
Michihiro Kon, Yoshiko Ebi, Kohei Nakagaki
High intensity interval training (HIIT) is known to be an effective exercise training regimen to improve energy substrate metabolism and insulin sensitivity. However, the underlying mechanisms of improvement in insulin sensitivity due to HIIT have not yet been fully clarified. C1q/TNF-related protein (CTRP) 1 and CTRP9, which are adiponectin paralogs and novel adipokines, have favorable effects on energy substrate metabolism and insulin sensitivity. The purpose of this study was to investigate the effects of a single bout of HIIT on CTRP1 and CTRP9 secretions in healthy men...
June 28, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
Apostolos Papandreou, Anastassios Philippou, Elias Zacharogiannis, Maria Maridaki
Papandreou, A, Philippou, A, Zacharogiannis, E, and Maridaki, M. Physiological adaptations to high-intensity interval and continuous training in kayak athletes. J Strength Cond Res XX(X): 000-000, 2018-High-intensity interval training (HIIT) seems to be more effective than continuous training (CT) for the improvement of physical condition and sports performance. This study compared physiological adaptations with HIIT and CT in flat water kayak athletes. Twenty-four national-class kayakists were divided into 3 groups (n = 8 per group), 2 of which participated in an 8-week CT or HIIT program, whereas the third one served as control (C)...
June 25, 2018: Journal of Strength and Conditioning Research
Jamie M O'Driscoll, Steven M Wright, Katrina A Taylor, Damian A Coleman, Rajan Sharma, Jonathan D Wiles
Physical inactivity and sedentary behaviour is associated with increased cardiovascular disease risk. High intensity interval training (HIIT) has been shown to improve important health parameters. The aim of the present study was to assess the combined adaptations of the cardiac autonomic nervous system and myocardial functional and mechanical parameters to HIIT. Forty physically inactive and highly sedentary males completed 2-weeks of HIIT and control period. The HIIT protocol consisted of 3x30-second maximal cycle ergometer sprints against a resistance of 7...
June 28, 2018: Journal of Applied Physiology
Eduardo Caldas Costa, Jacqueline L Hay, Dustin S Kehler, Kevin F Boreskie, Rakesh C Arora, Daniel Umpierre, Andrea Szwajcer, Todd A Duhamel
BACKGROUND: Aerobic exercise reduces blood pressure (BP), but it is unknown whether a high-intensity training approach can elicit a greater BP reduction in populations with elevated BP. This systematic review compared the efficacy of high-intensity interval training (HIIT) versus moderate-intensity continuous training (MICT) for reducing BP in adults with pre- to established hypertension. METHODS: Five electronic databases (MEDLINE, EMBASE, CENTRAL, PEDro, and SPORTDiscus) were searched for randomized trials comparing the chronic effects of HIIT versus MICT on BP in individuals with resting systolic BP ≥ 130 mmHg and/or diastolic BP ≥ 85 mmHg and/or under antihypertensive medication...
June 13, 2018: Sports Medicine
Yuri Kriel, Christopher D Askew, Colin Solomon
Background: High-intensity interval training (HIIT) has been proposed as a time-efficient exercise format to improve exercise adherence, thereby targeting the chronic disease burden associated with sedentary behaviour. Exercise mode (cycling, running), if self-selected, will likely affect the physiological and enjoyment responses to HIIT in sedentary individuals. Differences in physiological and enjoyment responses, associated with the mode of exercise, could potentially influence the uptake and continued adherence to HIIT...
2018: PeerJ
John Woodfield, Matthew Zacharias, Genevieve Wilson, Fran Munro, Kate Thomas, Andrew Gray, James Baldi
BACKGROUND: Risk factors, such as the number of pre-existing co-morbidities, the extent of the underlying pathology and the magnitude of the required operation, cannot be changed before surgery. It may, however, be possible to improve the cardiopulmonary fitness of the patient with an individualised exercise program. We are performing a randomised controlled trial (RCT) assessing the impact of High Intensity Interval Training (HIIT) on preoperative cardiopulmonary fitness and postoperative outcomes in patients undergoing major abdominal surgery...
June 25, 2018: Trials
Gina P Velasco-Orjuela, María A Domínguez-Sanchéz, Enrique Hernández, Jorge E Correa-Bautista, Héctor R Triana-Reina, Antonio García-Hermoso, Jhonatan C Peña-Ibagon, Mikel Izquierdo, Eduardo L Cadore, Anthony C Hackney, Robinson Ramírez-Vélez
The purpose of this study was to compare the hormonal responses to one session of high-intensity interval training (HIIT, 4 × 4 min intervals at 85-95% maximum heart rate [HRmax], interspersed with 4 min of recovery at 75-85% HRmax), resistance training (RT at 50-70% of one repetition maximum 12-15 repetitions per set with 60s of recovery) or both (HIIT+RT) exercise protocol in a cohort of physical inactivity, overweight adults (age 18-30 years old). Randomized, parallel-group clinical trial among fifty-one men (23...
June 22, 2018: Physiology & Behavior
Saleh Safarimosavi, Hamid Mohebbi, Hadi Rohani
Safarimosavi, S, Mohebbi, H, and Rohani, H. High-intensity interval vs. continuous endurance training: Preventive effects on hormonal changes and physiological adaptations in prediabetes patients. J Strength Cond Res XX(X): 000-000, 2018-The aim of this study was to examine the effects of a 12-week high-intensity interval training (HIIT) intervention, or an isocaloric continuous endurance training (CET) intervention on insulin resistance indices and change in irisin and preptin in patients with prediabetes...
June 22, 2018: Journal of Strength and Conditioning Research
Evan Campbell, Elaine H Coulter, Lorna Paul
BACKGROUND: Aerobic high intensity interval training (HIIT) is safe in the general population and more efficient in improving fitness than continuous moderate intensity training. The body of literature examining HIIT in multiple sclerosis (MS) is expanding but to date a systematic review has not been conducted. The aim of this review was to investigate the efficacy and safety of HIIT in people with MS. METHODS: A systematic search was carried out in September 2017 in EMBASE, MEDline, PEDro, CENTRAL and Web of Science Core collections using appropriate keywords and MeSH descriptors...
June 13, 2018: Multiple Sclerosis and related Disorders
Vitor de Salles Painelli, Kleiner Márcio Nemezio, Ana Jéssica, Mariana Franchi, Isabel Andrade, Luiz Augusto Riani, Bryan Saunders, Craig Sale, Roger Charles Harris, Bruno Gualano, Guilherme Giannini Artioli
PURPOSE: Cross-sectional studies suggest that training can increase muscle carnosine (MCarn), although longitudinal studies have failed to confirm this. A lack of control for dietary β-alanine intake or muscle fibre type shifting may have hampered their conclusions. The purpose of the present study was to investigate the effects of high-intensity interval training (HIIT) on MCarn. METHODS: Twenty vegetarian men were randomly assigned to a control (CON; n=10) or HIIT (n=10) group...
June 21, 2018: Medicine and Science in Sports and Exercise
Alireza Ghardashi Afousi, Mohammad Reza Izadi, Kamran Rakhshan, Farnoosh Mafi, Soheil Biglari, Habibalah Gandomkar Bagheri
NEW FINDINGS: What is the central question of this study? Endothelial function is impaired because of increased oscillatory and retrograde shear in patients with type 2 diabetes. It is unclear whether low-volume high-intensity interval training and continuous moderate intensity exercise can modulate oscillatory and retrograde shear, blood flow and flow-mediated arterial dilation in these patients. What is the main finding and its importance? We found that low-volume high-intensity interval training, by increasing anterograde shear and decreasing retrograde shear and oscillatory index, can increase nitric oxide production and consequently result in increased flow-mediated dilation and outward arterial remodelling in patients with type 2 diabetes...
June 22, 2018: Experimental Physiology
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