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High-Intensity Interval Training

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https://www.readbyqxmd.com/read/28230530/developing-a-multi-component-immune-model-for-evaluating-the-risk-of-respiratory-illness-in-athletes
#1
Maree Gleeson, David B Pyne, Lisa J Elkington, Sharron T Hall, John R Attia, Christopher Oldmeadow, Lisa G Wood, Robin Callister
Clinical and laboratory identification of the underlying risk of respiratory illness in athletes has proved problematic. The aim of this study was to determine whether clinical data, combined with immune responses to standardised exercise protocols and genetic cytokine polymorphism status, could identify the risk of respiratory illness (symptoms) in a cohort of highly-trained athletes. Male endurance athletes (n=16; VO2max 66.5 ± 5.1 mL.kg-1.min-1) underwent a clinical evaluation of known risk factors by a physician and comprehensive laboratory analysis of immune responses both at rest and after two cycling ergometer tests: 60 min at 65% VO2max (LONG); and 6 x 3 min intervals at 90% VO2max (INTENSE)...
2017: Exercise Immunology Review
https://www.readbyqxmd.com/read/28223710/high-intensity-aerobic-exercise-improves-both-hepatic-fat-content-and-stiffness-in-sedentary-obese-men-with-nonalcoholic-fatty-liver-disease
#2
Sechang Oh, Rina So, Takashi Shida, Tomoaki Matsuo, Bokun Kim, Kentaro Akiyama, Tomonori Isobe, Yoshikazu Okamoto, Kiyoji Tanaka, Junichi Shoda
We compared the effects of 12-week programs of resistance training (RT), high-intensity interval aerobic training (HIAT), and moderate-intensity continuous aerobic training (MICT). The primary goal was to evaluate the therapeutic effects of the exercise modalities for the management of nonalcoholic fatty liver disease (NAFLD). A total of 61 sedentary obese men with NAFLD were randomized into one of the following exercise regimens (RT, HIAT, or MICT). Hepatic fat content was decreased to a similar extent in the RT, HIAT, and MICT groups (-14...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223271/high-intensity-interval-training-how-much-pain-to-get-a-gain
#3
EDITORIAL
George P Nassis
No abstract text is available yet for this article.
March 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28222393/caffeine-prevents-changes-in-muscle-caused-by-high-intensity-interval-training
#4
Juliano M Vieira, Jessié M Gutierres, Fabiano B Carvalho, Luciane B Pereira, Liziele S Oliveira, Vera Maria Morsch, Maria Rosa C Schetinger, Marília V Rodrigues, Jossiele Leitemperger, Vânia Loro, Cristina C Krewer, Marina S Vencato, Roselia M Spanevello
The use of ergogenic substances such as caffeine has become a strategy to enhance sports performance. In the present study we evaluated the effects of high-intensity interval training (HIIT) associated with caffeine intake on acetylcholinesterase (AChE) and Ca(2+)ATPase activity and glycogen levels in the muscles of rats were evaluated. The animals were divided in groups: control, caffeine 4 or 8mg/kg, HIIT, HIIT plus caffeine 4 or caffeine 8mg/kg. Our results showed a decrease in glycogen levels in muscle in all trained groups after acute session exercise, while that an increase in glycogen levels was observed in all groups in relation to control in chronic exercise protocol...
February 17, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28219103/digoxin-induces-cardiac-hypertrophy-without-negative-effects-on-cardiac-function-and-physical-performance-in-trained-normotensive-rats
#5
Claodete Hasselstrom Neves, Ramires Alsamir Tibana, Jonato Prestes, Fabricio Azevedo Voltarelli, Andreo Fernando Aguiar, Gustavo Augusto Ferreira Mota, Sergio Luiz Borges de Sousa, Andre Soares Leopoldo, Ana Paula Lima Leopoldo, Andre Mueller, Danilo Henrique Aguiar, James Wilfred Navalta, Mario Mateus Sugizaki
Cardiotonic drugs and exercise training promote cardiac inotropic effects, which may affect training-induced cardiac adaptations. This study investigated the effects of long-term administration of digoxin on heart structure and function, and physical performance of rats submitted to high-intensity interval training (HIIT). Male Wistar rats, 60 days old, were divided into control (C), digoxin (DIGO), trained (T), and trained with digoxin (TDIGO). Digoxin was administered by gavage (30 µg/kg/day) for 75 days...
February 20, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28216412/sex-impacts-the-flow-mediated-dilation-response-to-acute-aerobic-exercise-in-older-adults
#6
Jeung-Ki Yoo, Michelle M Pinto, Han-Kyul Kim, Chueh-Lung Hwang, Jisok Lim, Eileen M Handberg, Demetra D Christou
There is growing evidence of sex differences in the chronic effect of aerobic exercise on endothelial function (flow-mediated dilation; FMD) in older adults, but whether there are sex differences also in the acute effect of aerobic exercise on FMD in older adults is unknown. The purpose of this study was to test the hypothesis that sex modulates the FMD response to acute aerobic exercise in older adults. Thirteen older men and fifteen postmenopausal women (67±1 vs. 65±2years, means±SE, P=0.6), non-smokers, free of major clinical disease, participated in this randomized crossover study...
February 16, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28207951/endurance-capacity-and-neuromuscular-fatigue-following-high-vs-moderate-intensity-endurance-training-a-randomised-trial
#7
Thomas J O'Leary, Johnny Collett, Ken Howells, Martyn G Morris
High-intensity exercise induces significant central and peripheral fatigue, however the effect of endurance training on these mechanisms of fatigue is poorly understood. We compared the effect of cycling endurance training of disparate intensities on high-intensity exercise endurance capacity and the associated limiting central and peripheral fatigue mechanisms. Twenty adults were randomly assigned to 6 weeks of either high-intensity interval training (HIIT, 6-8 × 5 min at halfway between lactate threshold and maximal oxygen uptake [50%Δ]) or volume matched moderate-intensity continuous training (CONT, ~60-80 min at 90% lactate threshold)...
February 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28198783/effect-of-moderate-versus-high-intensity-interval-exercise-training-on-heart-rate-variability-parameters-in-inactive-latin-american-adults-a-randomised-clinical-trial
#8
Robinson Ramírez-Vélez, Alejandra Tordecilla-Sanders, Luis Andrés Téllez-T, Diana Camelo-Prieto, Paula Andrea Hernández-Quiñonez, Jorge Enrique Correa-Bautista, Antonio Garcia-Hermoso, Rodrigo Ramírez-Campillo, Mikel Izquierdo
We investigated the effect of moderate versus high-intensity interval exercise training on the HRV indices in physically inactive adults. Twenty inactive adults were randomly allocated to receive either moderate intensity training (MCT group) or high-intensity interval training (HIT group). The MCT group performed aerobic training at an intensity of 55-75%, which consisted of walking on a treadmill at 60-80% of the maximum heart rate (HRmax) until the expenditure of 300 kcal. The HIT group ran on a treadmill for 4 minutes at 85-95% peak HRmax and had a recovery of 4 minutes at 65% peak HRmax until the expenditure of 300 kcal...
February 1, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28195979/effects-of-high-intensity-interval-training-with-different-interval-durations-on-physical-performance-in-handball-players
#9
Jorge Viaño-Santasmarinas, Ezequiel Rey, Sergio Carballeira, Alexis Padrón-Cabo
The purpose of this study was to compare the effects of 2 high-intensity interval training protocols (HIIT) with different interval durations (short (SI) vs long (LI)), based on peak running velocity in 30-15 Intermittent Fitness Test (VIFT) in handball players. Eighteen highly trained players (age: 22.7±3.9 years; height: 181.5±6.6 cm; body mass: 84.7±14.1 kg) were randomly assigned to SI (2 sets of 22 intervals of 10-s runs at 95%VIFT) or LI (5 sets of 3 min intervals at 85% VIFT) group. The intervention program had to be carried out 2 times a week over 6 weeks...
February 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28188854/the-effects-of-a-single-bout-of-exercise-on-motor-memory-interference-in-the-trained-and-untrained-hemisphere
#10
Benedikt Lauber, Steffen Franke, Wolfgang Taube, Albert Gollhofer
Increasing evidence suggests that cardiovascular exercise has positive effects on motor memory consolidation. In this study, we investigated whether a single session of high-intensity interval training (HIIT) mitigates the effects of practicing an interfering motor task. Furthermore, learning and interference effects were assessed in the actively trained and untrained limb as it is known that unilateral motor learning can cause bilateral adaptations. Subjects performed a ballistic training and then the HIIT either before (HIIT_before) or after (HIIT_after) practicing an interfering accuracy task (AT)...
February 8, 2017: Neuroscience
https://www.readbyqxmd.com/read/28187143/the-relation-between-exercise-and-glaucoma-in-a-south-korean-population-based-sample
#11
Shuai-Chun Lin, Sophia Y Wang, Louis R Pasquale, Kuldev Singh, Shan C Lin
PURPOSE: To investigate the association between exercise and glaucoma in a South Korean population-based sample. DESIGN: Population-based, cross-sectional study. PARTICIPANTS: A total of 11,246 subjects, 40 years and older who underwent health care assessment as part of the 2008-2011 Korean National Health and Nutrition Examination Survey. METHODS: Variables regarding the duration (total minutes per week), frequency (days per week), and intensity of exercise (vigorous, moderate exercise and walking) as well as glaucoma prevalence were ascertained for 11,246 survey participants...
2017: PloS One
https://www.readbyqxmd.com/read/28183816/two-weeks-of-moderate-intensity-continuous-training-but-not-high-intensity-interval-training-increases-insulin-stimulated-intestinal-glucose-uptake
#12
Kumail Kumar Motiani, Anna M Savolainen, Jari-Joonas Eskelinen, Jussi Toivanen, Tamiko Ishizu, Minna Yli-Karjanmaa, Kirsi A Virtanen, Riitta Parkkola, Jukka Kapanen, Tove J Gronroos, Merja Haaparanta-Solin, Olof Solin, Nina Savisto, Markku Ahotupa, Eliisa Löyttyniemi, Juhani Knuuti, Pirjo Nuutila, Kari K Kalliokoski, Jarna C Hannukainen
Similar to muscles, the intestine is also insulin resistant in obese subjects and subjects with impaired glucose tolerance. Exercise training improves muscle insulin sensitivity, but its effects on intestinal metabolism are not known. We studied the effects of high intensity interval training (HIIT) and moderate intensity continuous training (MICT) on intestinal glucose and free fatty acid uptake from circulation in humans. Twenty-eight healthy middle-aged sedentary men were randomized for two weeks of HIIT or MICT...
February 9, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28183455/cardiometabolic-risk-markers-adipocyte-fatty-acid-binding-protein-afabp-and-the-impact-of-high-intensity-interval-training-hiit-in-obese-adolescents
#13
Susann Blüher, Jakob Käpplinger, Sabine Herget, Sandra Reichardt, Yvonne Böttcher, Andrea Grimm, Jürgen Kratzsch, David Petroff
OBJECTIVE: The impact of high-intensity interval training (HIIT) as well as the association between the adipocyte fatty binding protein (aFABP) and cardiometabolic risk factors in overweight adolescents was investigated. METHODS: Twenty-eight adolescents (13-18years; BMI≥90th percentile according to German reference values) were offered HIIT twice weekly for 6months. At baseline and after program completion, anthropometric, clinical and metabolic characteristics were assessed and a fasting blood sample was obtained...
March 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28183444/effects-of-lifestyle-interventions-on-clinical-characteristics-of-patients-with-non-alcoholic-fatty-liver-disease-a-meta-analysis
#14
Christina N Katsagoni, Michael Georgoulis, George V Papatheodoridis, Demosthenes B Panagiotakos, Meropi D Kontogianni
BACKGROUND/OBJECTIVES: Although lifestyle modifications remain the cornerstone therapy for non-alcoholic fatty liver disease (NAFLD), the optimal lifestyle intervention is still controversial. The aim of this meta-analysis was to evaluate the effect of exercise and/or dietary interventions, type or intensity of exercise and type of diet, on liver function outcomes (liver enzymes, intrahepatic fat and liver histology), as well as on anthropometric and glucose metabolism parameters in NAFLD patients...
March 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28178145/one-session-of-high-intensity-interval-training-hiit-every-5-days-improves-muscle-power-but-not-static-balance-in-lifelong-sedentary-ageing-men-a-randomized-controlled-trial
#15
Nicholas F Sculthorpe, Peter Herbert, Fergal Grace
BACKGROUND: Declining muscle power during advancing age predicts falls and loss of independence. High-intensity interval training (HIIT) may improve muscle power, but remains largely unstudied in ageing participants. METHODS: This randomized controlled trial (RCT) investigated the efficacy of a low-frequency HIIT (LfHIIT) intervention on peak muscle power (peak power output [PPO]), body composition, and balance in lifelong sedentary but otherwise healthy males. METHODS: Thirty-three lifelong sedentary ageing men were randomly assigned to either intervention (INT; n = 22, age 62...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28177746/preliminary-safety-analysis-of-high-intensity-interval-training-hiit-in-persons-with-chronic-stroke
#16
Daniel L Carl, Pierce Boyne, Bradley Rockwell, Myron Gerson, Jane Khoury, Brett Kissela, Kari Dunning
The purpose of this study was to assess safety via electrocardiographic (ECG), blood pressure (BP), heart rate (HR), and orthopedic responses to 3 different high-intensity interval training (HIIT) protocols in persons with stroke. Eighteen participants (10 male; 61.9 + 8.3 years of age; 5.8 + 4.2 years poststroke) completed a symptom-limited graded exercise test (GXT) with ECG monitoring to screen for eligibility and determine HR peak. The 3 HIIT protocols involved repeated 30 s bursts of treadmill walking at maximum speed alternated with rest periods of 30 s (P30), 1 min (P60), or 2 min (P120)...
November 21, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177733/the-effects-of-block-training-on-pacing-during-20-km-cycling-time-trial
#17
Vitor Pereira Costa, Luiz Guilherme Antonacci Guglielmo, Carl David Paton
The aim of this study was to determine the effects of block training (BL) on pacing during a 20-km hilly cycling time trial (TT) in trained cyclists. Twenty male cyclists were separated into two groups: control and BL. The training of each cyclist was monitored during a period of 3 weeks. In the first week cyclists performed an overload period of seven consecutive days of high intensity interval training followed by two weeks of normal training. Cyclists performed one TT before intervention and two TT after seven and fourteen days at the end of training...
December 15, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177703/loads-and-movement-speed-affect-energy-expenditure-during-circuit-resistance-exercise
#18
Kirk B Roberson, Kevin A Jacobs, Morgan J White, Joseph F Signorile
Circuit resistance training (CT) constitutes a high-intensity interval program commonly used to target weight loss; however, the loads and exercise patterns that maximize energy expenditure (EE) remain undetermined. We examined differences in EE among CT protocols using varying loads and contraction speeds in recreationally-trained males and females. Seven males (21.1 ± 0.5y) and eight females (20.0 ± 0.9y) performed three randomized CT protocols incorporating three circuits using heavy-load (80%1RM) explosive (HLEC), heavy-load, controlled (2s) (HLCC), and moderate-load (50%1RM) explosive contractions (MLEC)...
January 31, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28166118/all-extremity-exercise-training-improves-arterial-stiffness-in-older-adults
#19
Han-Kyul Kim, Chueh-Lung Hwang, Jeung-Ki Yoo, Moon-Hyon Hwang, Eileen M Handberg, John W Petersen, Wilmer W Nichols, Sofia Sofianos, Demetra D Christou
: Large elastic arteries stiffen with age which predisposes older adults to increased risk for cardiovascular disease. Aerobic exercise training is known to reduce the risk for cardiovascular disease, but the optimal exercise prescription for attenuating large elastic arterial stiffening in older adults is not known. PURPOSE: The purpose of this randomized controlled trial was to compare the effect of all-extremity high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) on aortic pulse wave velocity (PWV) and carotid artery compliance in older adults...
February 4, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28160083/high-intensity-aerobic-interval-training-improves-aerobic-fitness-and-hba1c-among-persons-diagnosed-with-type-2-diabetes
#20
Eva Maria Støa, Sondre Meling, Lill-Katrin Nyhus, Glenn Strømstad, Karl Magnus Mangerud, Jan Helgerud, Solfrid Bratland-Sanda, Øyvind Støren
PURPOSE: It remains to be established how high-intensity aerobic interval training (HAIT) affects risk factors associated with type 2 diabetes (TD2). This study investigated effects of HAIT on maximal oxygen uptake (VO2max), glycated Hemoglobin type A1C (HbA1c), insulin resistance (IR), fat oxidation (FatOx), body weight (BW), percent body fat (%BF), lactate threshold (LT), blood pressure (BP), and blood lipid profile (BLP) among persons with T2D. Results were compared to the effects after a moderate-intensity training (MIT) program...
February 3, 2017: European Journal of Applied Physiology
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