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https://www.readbyqxmd.com/read/28207951/endurance-capacity-and-neuromuscular-fatigue-following-high-vs-moderate-intensity-endurance-training-a-randomised-trial
#1
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/28195979/effects-of-high-intensity-interval-training-with-different-interval-durations-on-physical-performance-in-handball-players
#2
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
#3
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/28183816/two-weeks-of-moderate-intensity-continuous-training-but-not-high-intensity-interval-training-increases-insulin-stimulated-intestinal-glucose-uptake
#4
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
#5
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/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
#6
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
#7
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/28166118/all-extremity-exercise-training-improves-arterial-stiffness-in-older-adults
#8
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/28153946/effects-and-prevalence-of-non-responders-after-12weeks-of-high-intensity-interval-or-resistan-training-in-adult-woman-with-insulin-resistance-a-randomized-trial
#9
Cristian Alvarez, Rodrigo Ramírez-Campillo, Robinson Ramírez-Vélez, Mikel Izquierdo
AIMS/HYPOTHESIS: Our aim was to investigate the effects and prevalence of non-responders (NR) to high-intensity interval training (HIIT) and resistant training (RT)in adult woman with insulin resistance on cardiometabolic health parameters. METHODS: Sedentary overweight/obese insulin resistant adult women (age = 33.5 ±6.5 years;BMI=29.9 ± 3.7kg/m2) were randomly assigned to a tri-weekly HIIT program(HIIT;n=18) or resistant training (RT;n=17).Anthropometry (body mass, fat mas, muscle mass, waist circumference and skinfolds thickness),cardiovascular(blood pressure), metabolic (fasting glucose, fasting insulin and HOMA-IR),as well muscle strength, and endurance performance co-variables were measured before and after 12 weeks in both intervention groups...
February 2, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28122717/acute-high-intensity-interval-exercise-reduces-human-monocyte-toll-like-receptor-2-expression-in-type-2-diabetes
#10
Cody Durrer, Monique Emily Francois, Helena Neudorf, Jonathan Peter Little
: Type 2 diabetes (T2D) is characterized by chronic low-grade inflammation that contributes to disease pathophysiology. Exercise has anti-inflammatory effects but the impact of high-intensity interval training (HIIT) is not known. PURPOSE: To determine the impact of a single session of HIIT on cellular, molecular, and circulating markers of inflammation in individuals with T2D. METHODS: Participants with T2D (n=10) and healthy age-matched controls (HC; n=9) completed an acute bout of HIIT (7 X 1-min @ ~85% maximal aerobic power output, separated by 1-min recovery) on a cycle ergometer with blood samples obtained before (Pre), immediately after (Post), and at one-hour of recovery (1-h Post)...
January 25, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28121801/differential-motor-unit-changes-after-endurance-or-high-intensity-interval-training
#11
Eduardo Martinez-Valdes, Deborah Falla, Francesco Negro, Frank Mayer, Dario Farina
PURPOSE: Using a novel technique of high-density surface electromyography (HDEMG) decomposition and motor unit (MU) tracking, we compared changes in the properties of vastus medialis (VM) and vastus lateralis (VL) MUs following endurance (END) and high-intensity interval training (HIIT). METHODS: Sixteen men were assigned to an END or HIIT group (n=8 each) and performed six training sessions over 14 days. Each session consisted of 8-12×60s intervals at 100% peak power output (PPO) separated by 75s of recovery (HIIT) or 90-120min continuous cycling at ~65% VO2peak (END)...
January 23, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28119880/impact-of-long-term-high-intensity-interval-and-moderate-intensity-continuous-training-on-subclinical-inflammation-in-overweight-obese-adults
#12
José Gerosa-Neto, Barbara M M Antunes, Eduardo Z Campos, Jhennyfer Rodrigues, Gustavo D Ferrari, José C Rosa Neto, Carlos R Bueno, Fábio S Lira
Obesity is a risk factor able to trigger several inflammatory alterations and the imbalance between pro- and anti-inflammatory cytokine productions. Physical exercise is an important strategy for reduction of inflammatory established process. The aim of this study was to evaluate the effect of 16 weeks of three exercise training programs in the inflammatory profile and insulin resistance in overweight/obesity. Thirty two men and women (46.4±10.1 years; 162.0±9.1 cm; 82.0±13.6 kg) were divided into three groups for training on a treadmill: continuous at 70% maximum heart rate (HRmax) 5 times a week (CONT); 1×4 min (1-bout) and 4×4 min (high intensity interval training, HIIT) at 90% HRmax 3 times a week...
December 2016: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28116314/comparable-effects-of-high-intensity-interval-training-and-prolonged-continuous-exercise-training-on-abdominal-visceral-fat-reduction-in-obese-young-women
#13
Haifeng Zhang, Tom K Tong, Weifeng Qiu, Xu Zhang, Shi Zhou, Yang Liu, Yuxiu He
This study compared the effect of prolonged moderate-intensity continuous training (MICT) on reducing abdominal visceral fat in obese young women with that of work-equivalent (300 kJ/training session) high-intensity interval training (HIIT). Forty-three participants received either HIIT (n = 15), MICT (n = 15), or no training (CON, n = 13) for 12 weeks. The abdominal visceral fat area (AVFA) and abdominal subcutaneous fat area (ASFA) of the participants were measured through computed tomography scans preintervention and postintervention...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28089898/exercise-guidelines-to-promote-cardiometabolic-health-in-spinal-cord-injured-humans-time-to-raise-the-intensity
#14
Tom E Nightingale, Richard S Metcalfe, Niels Bj Vollaard, James L J Bilzon
Spinal cord injury (SCI) is a life changing event that, as a result of paralysis, negatively influences habitual levels of physical activity and hence cardiometabolic health. Performing regular structured exercise therefore appears extremely important in persons with SCI. However, exercise options are mainly limited to the upper-body, which involves a smaller activated muscle mass compared to the mainly leg-based activities commonly performed by non-disabled individuals. Current exercise guidelines for SCI focus predominantly on relative short durations of moderate-intensity aerobic arm cranking exercise, yet contemporary evidence suggests this is not sufficient to induce meaningful improvements in risk factors for the prevention of cardiometabolic disease in this population...
January 12, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28076352/high-intensity-interval-training-elicits-higher-enjoyment-than-moderate-intensity-continuous-exercise
#15
Jacob S Thum, Gregory Parsons, Taylor Whittle, Todd A Astorino
: Exercise adherence is affected by factors including perceptions of enjoyment, time availability, and intrinsic motivation. Approximately 50% of individuals withdraw from an exercise program within the first 6 mo of initiation, citing lack of time as a main influence. Time efficient exercise such as high intensity interval training (HIIT) may provide an alternative to moderate intensity continuous exercise (MICT) to elicit substantial health benefits. This study examined differences in enjoyment, affect, and perceived exertion between MICT and HIIT...
2017: PloS One
https://www.readbyqxmd.com/read/28060976/-cardiovascular-recovery-during-intermittent-exercise-in-highly-adherent-partic-pants-with-hypertension-and-type-2-diabetes-mellitus
#16
Johnattan Cano-Montoya, Cristian Álvarez, Cristian Martínez, Andrés Salas, Farid Sade, Rodrigo Ramírez-Campillo
BACKGROUND: Despite the evidence supporting metabolic benefits of high intensity interval exercise (HIIT), there is little information about the cardiovascular response to this type of exercise in patients with type 2 diabetes (T2D) and hypertension (HTA). AIM: To analyze the changes in heart rate at rest, at the onset and at the end of each interval of training, after twelve weeks of a HIIT program in T2D and HTA patients. MATERIAL AND METHODS: Twenty-three participants with T2D and HTA (20 women) participated in a controlled HIIT program...
September 2016: Revista Médica de Chile
https://www.readbyqxmd.com/read/28051345/how-does-interval-training-prescription-impact-physiological-and-perceptual-responses
#17
Stephen Seiler, Øystein Sylta
The purpose of this study was to compare physiological responses and perceived exertion among well trained cyclists (n=63) performing three different high intensity interval training (HIIT) prescriptions differing in work bout duration and accumulated duration, but all prescribed with maximal session effort. Data are presented as mean(Standard Deviation). Subjects (male, 38(8) y, VO2peak 62(6) mL.kg(-1) min(-1)) completed up to 24 HIIT sessions over 12 weeks as part of a training intervention study. Sessions were prescribed as 4x16 min, 4x8 min, or 4x4 min with 2 min recovery periods (8 sessions of each prescription, balanced over time)...
January 4, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28043028/modulation-of-inflammatory-response-arising-from-high-intensity-intermittent-and-concurrent-strength-training-in-physically-active-males
#18
Paula Alves Monteiro, Eduardo Zapaterra Campos, Flaviane Poleto de Oliveira, Fernando Pierin Peres, José Cesar Rosa-Neto, Gustavo Duarte Pimentel, Fabio Santos Lira
The purposes of this study were to determine: (i) the extent of an acute session of high-intensity intermittent exercise (HIIE) followed by a concurrent strength session (Conc) on the increase of systemic inflammatory cytokines and chemokines, and (ii) whether eight weeks of high intensity interval training plus concurrent strength training alters the acute inflammatory response and immune status. Ten recreationally active males (aged 26.9±4.3years) performed two experimental exercise sessions interspersed by eight weeks of HIIT plus concurrent strength training...
December 30, 2016: Cytokine
https://www.readbyqxmd.com/read/28042739/high-intensity-interval-training-hiit-increases-insulin-like-growth-factor-i-igf-i-in-sedentary-aging-men-but-not-masters-athletes-an-observational-study
#19
Peter Herbert, Lawrence D Hayes, Nicholas Sculthorpe, Fergal M Grace
INTRODUCTION: The aim of this investigation was to examine the impact high-intensity interval training (HIIT) on serum insulin-like growth factor-I (IGF-I) in active compared with sedentary aging men. METHODS: 22 lifetime sedentary (SED; 62 ± 2 years) and 17 masters' athletes (LEX; 60 ± 5 years) were recruited to the study. As HIIT requires preconditioning exercise in sedentary cohorts, the study required three assessment phases; enrollment (phase A), following preconditioning exercise (phase B), and post-HIIT (phase C)...
December 31, 2016: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
https://www.readbyqxmd.com/read/27976397/the-physiology-of-interval-training-a-new-target-to-hiit
#20
Andrea Nicolò, Michele Girardi
No abstract text is available yet for this article.
December 15, 2016: Journal of Physiology
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