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High intensity intermittent training/exercise

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https://www.readbyqxmd.com/read/29781539/intermittent-resistance-exercise-and-obesity-considered-separately-or-combined-impair-spermatic-parameters-in-adult-male-wistar-rats
#1
Ana Paula Franco Punhagui, Giovana Rampazzo Teixeira, Marcelo Conrado de Freitas, Patricia Monteiro Seraphim, Glaura Scantamburlo Alves Fernandes
Obesity and absence of physical exercise are global problems that affect concentration and sperm quality in the male reproductive system. The purpose of this study was to examine the effect of obesity and resistance training, considered separately or in association, on testicular function and reproductive capacity. Twenty pubertal male Wistar rats were distributed into four groups: control (C) and exercise (E) groups that received standard rat chow; and obese (O) and obese with exercise (OE) groups that received a high-fat diet...
May 21, 2018: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/29746505/the-effects-of-short-term-detraining-and-retraining-on-physical-fitness-in-elite-soccer-players
#2
Chang Hwa Joo
PURPOSE: The aim of this study was to examine the effects of aerobic high-intensity training with reduced volume and training cessation on body composition and physical fitness after the end of season and the time required to recapture physical fitness with intensified retraining following two weeks of detraining in elite soccer players. METHOD: Twenty male semi-professional soccer players participated in this study. The soccer players were assigned to either a group that completed high-intensity aerobic training (HAT, n = 10) or to a detraining and retraining group (DHAT, n = 10) for a 5-week period immediately after the end of the season...
2018: PloS One
https://www.readbyqxmd.com/read/29727016/metabolic-stress-dependent-regulation-of-the-mitochondrial-biogenic-molecular-response-to-high-intensity-exercise-in-human-skeletal-muscle
#3
M Fiorenza, T P Gunnarsson, M Hostrup, F M Iaia, F Schena, H Pilegaard, J Bangsbo
KEY POINTS: Low-volume high-intensity exercise training promotes muscle mitochondrial adaptations that resemble the ones associated with high-volume moderate-intensity exercise training. These training-induced mitochondrial adaptations stem from the cumulative effects of transient transcriptional responses to each acute exercise bout. However, whether metabolic stress is a key mediator of the acute molecular responses to high-intensity exercise is still incompletely understood. Herein we show that, by comparing different work-matched low-volume high-intensity exercise protocols, more marked metabolic perturbations were associated with enhanced mitochondrial biogenesis-related muscle mRNA responses...
May 4, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29720949/active-recovery-after-high-intensity-interval-training-does-not-attenuate-training-adaptation
#4
Thimo Wiewelhove, Christoph Schneider, Alina Schmidt, Alexander Döweling, Tim Meyer, Michael Kellmann, Mark Pfeiffer, Alexander Ferrauti
Objective: High-intensity interval training (HIIT) can be extremely demanding and can consequently produce high blood lactate levels. Previous studies have shown that lactate is a potent metabolic stimulus, which is important for adaptation. Active recovery (ACT) after intensive exercise, however, enhances blood lactate removal in comparison with passive recovery (PAS) and, consequently, may attenuate endurance performance improvements. Therefore, the aim of this study was to examine the influence of regular ACT on training adaptations during a HIIT mesocycle...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29696212/feasibility-of-high-intensity-interval-training-with-hyperoxia-vs-intermittent-hyperoxia-and-hypoxia-in-cancer-patients-undergoing-chemotherapy-study-protocol-of-a-randomized-controlled-trial
#5
Moritz Schumann, Holger Schulz, Anthony C Hackney, Wilhelm Bloch
Exercise has been well demonstrated to potentially reduce chemotherapy-induced side effects and possibly aid slowing down tumor growth in cancer patients but exercise training adherence is typically low. Thus, training regimens which are perceived less strenuous but do not compromise the training-induced beneficial adaptations will help to increase adherence to exercise and reduce attrition. This 4-armed study aims to investigate the effects of high intensity interval training (HIIT) in hyperoxia versus intermittent hyperoxia and hypoxia in cancer patients undergoing chemotherapy...
December 2017: Contemporary Clinical Trials Communications
https://www.readbyqxmd.com/read/29675669/can-we-draw-general-conclusions-from-interval-training-studies
#6
Ricardo Borges Viana, Claudio Andre Barbosa de Lira, João Pedro Araújo Naves, Victor Silveira Coswig, Fabrício Boscolo Del Vecchio, Rodrigo Ramirez-Campillo, Carlos Alexandre Vieira, Paulo Gentil
Interval training (IT) has been used for many decades with the purpose of increasing performance and promoting health benefits while demanding a relatively small amount of time. IT can be defined as intermittent periods of intense exercise separated by periods of recovery and has been divided into high-intensity interval training (HIIT), sprint interval training (SIT), and repeated sprint training (RST). IT use has resulted in the publication of many studies and many of them with conflicting results and positions...
April 19, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29619799/low-carbohydrate-ketogenic-diet-impairs-anaerobic-exercise-performance-in-exercise-trained-women-and-men-a-randomized-sequence-crossover-trial
#7
Kymberly A Wroble, Morgan N Trott, George G Schweitzer, Rabia S Rahman, Patrick V Kelly, Edward P Weiss
BACKGROUND: Low-carbohydrate, ketogenic diets cause mild, sub-clinical systemic acidosis. Anaerobic exercise performance is limited by acidosis. Therefore, we evaluated the hypothesis that a low-carbohydrate, ketogenic diet impairs anaerobic exercise performance, as compared to a high-carbohydrate diet. METHODS: Sixteen men and women (BMI, 23±1 kg/m2, age 23±1 yr) participated in a randomized-sequence, counterbalanced crossover study in which they underwent exercise testing after four days of either a low-carbohydrate, ketogenic diet (LC; <50 g/day and <10% of energy from carbohydrates) or a high-carbohydrate diet (HC; 6-10 g/kg/day carbohydrate)...
April 4, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29588271/development-of-an-exergame-to-deliver-a-sustained-dose-of-high-intensity-training-formative-pilot-randomized-trial
#8
Thomas McBain, Matthew Weston, Paul Crawshaw, Catherine Haighton, Iain Spears
BACKGROUND: Sport science can play a critical role in reducing health inequalities. The inverse relationship between life expectancy, cardiorespiratory fitness, and socioeconomic status could be addressed by performing high-intensity training (HIT), delivered in a class salient and accessible approach. Commercially available exergames have shown encouraging compliance rates but are primarily designed for entertainment purposes rather than focusing on health-related outcomes. A serious game tailored toward delivering an exercise stimulus, while reducing the aversive protocols associated with HIT, could be beneficial to engage and improve health outcomes in socially deprived males...
March 27, 2018: JMIR Serious Games
https://www.readbyqxmd.com/read/29541136/physical-and-physiological-demands-of-futsal
#9
REVIEW
Naser Naser, Ajmol Ali, Paul Macadam
Futsal, the 5-a-side version of soccer (i.e. 1 goalkeeper and 4 outfield players), was introduced in 1930 and continues to grow in popularity around the world. Competitive games comprise of two 20-min periods of high-intensity and intermittent activities requiring substantial physical, tactical, and technical efforts from the players. A greater understanding of the physical and skill requirements will aid the development of futsal and enable practitioners to undertake appropriate training regimes for the demands of the sport...
December 2017: Journal of Exercise Science and Fitness
https://www.readbyqxmd.com/read/29534545/intermittent-fasting-with-or-without-exercise-prevents-weight-gain-and-improves-lipids-in-diet-induced-obese-mice
#10
Robin A Wilson, William Deasy, Christos G Stathis, Alan Hayes, Matthew B Cooke
Intermittent fasting (IF) and high intensity interval training (HIIT) are effective lifestyle interventions for improving body composition and overall health. However, the long-term effects of IF and potential synergistic effects of combining IF with exercise are unclear. The purpose of the study was to investigate the long-term effects of IF, with or without HIIT, on body composition and markers of metabolic health in diet-induced obese mice. In a randosmised, controlled design, 8-week-old C57BL/6 mice (males ( n = 39) and females ( n = 49)) were fed a high fat (HF) and sugar (S) water diet (30% ( w / v )) for 24-weeks but were separated into five groups at 12-weeks: (1) 'obese' baseline control (OBC); (2) no intervention (CON); (3) intermittent fasting (IF); (4) high intensity intermittent exercise (HIIT) and (5) combination of dietary and exercise intervention (IF + HIIT)...
March 12, 2018: Nutrients
https://www.readbyqxmd.com/read/29472870/high-intensity-interval-training-in-normobaric-hypoxia-leads-to-greater-body-fat-loss-in-overweight-obese-women-than-high-intensity-interval-training-in-normoxia
#11
Alba Camacho-Cardenosa, Marta Camacho-Cardenosa, Martin Burtscher, Ismael Martínez-Guardado, Rafael Timon, Javier Brazo-Sayavera, Guillermo Olcina
A moderate hypoxic stimulus is considered a promising therapeutic modality for several pathological states including obesity. There is scientific evidence suggesting that when hypoxia and physical activity are combined, they could provide benefits for the obese population. The aim of the present study was to investigate if exposure to hypoxia combined with two different protocols of high-intensity interval exercise in overweight/obese women was more effective compared with exercise in normoxia. Study participants included 82 overweight/obese women, who started a 12 week program of 36 sessions, and were randomly divided into four groups: (1) aerobic interval training in hypoxia (AitH; FiO2 = 17...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29466487/high-intensity-interval-training-in-heart-transplant-recipients-a-systematic-review-with-meta-analysis
#12
Raphael José Perrier-Melo, Fernando Augusto Marinho Dos Santos Figueira, Guilherme Veiga Guimarães, Manoel da Cunha Costa
Heart transplantation (HTx) is considered an efficient and gold-standard procedure for patients with end-stage heart failure. After surgery, patients have lower aerobic power (VO2max) and compensatory hemodynamic responses. The aim of the present study was to assess through a systematic review with meta-analysis whether high-intensity interval training (HIIT) can provide benefits for those parameters. This is a systematic review with meta-analysis, which searched the databases and data portals PubMed, Web of Science, Scopus, Science Direct and Wiley until December 2016 (pairs)...
February 2018: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/29436120/intermittent-exercise-and-insulin-sensitivity-in-older-individuals-it-s-a-hiit
#13
EDITORIAL
M J Gibala
No abstract text is available yet for this article.
April 2018: Acta Physiologica
https://www.readbyqxmd.com/read/29420320/high-intensity-handgrip-training-lowers-blood-pressure-and-increases-heart-rate-complexity-among-postmenopausal-women-a-pilot-study
#14
Danielle C Bentley, Cindy H P Nguyen, Scott G Thomas
OBJECTIVE: Handgrip exercise is an emerging strategy for resting blood pressure (BP) reduction requiring minimal time and exercise effort. However, the research literature is currently limited to handgrip protocol designs predominantly prescribing sustained grip contractions, with little assessment of alternative options. Furthermore, our understanding of the utility of handgrip exercise would be strengthened by an evaluation of the physiological mechanisms driving BP reductions and an assessment of the interindividual response variability...
April 2018: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/29401193/the-physical-activity-and-physiological-profiles-of-elite-international-female-field-hockey-players-across-the-quarters-of-competitive-match-play
#15
Aideen McGuinness, Shane Malone, Brian Hughes, Kieran Collins
The aim of the current investigation was to quantify the physical and physiological demands of elite international female field hockey across the quarters of match-play. Twenty-seven elite International female field hockey outfield players (23 ± 3 years; 162.6 ± 13.0 cm; 66.0 ± 6.0 kg) participated in the current observational study during the 2016-2017 season. Participants were monitored with GPS technology and HR monitors. Players were categorised based on three different playing positions. Activity was categorized into total distance (m), relative total distance (RTD), low, moderate and high intensity distance (m), max velocity (km⋅h), and percentage maximal velocity (%)...
February 1, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29381650/effects-of-different-exercise-modes-on-arterial-stiffness-and-nitric-oxide-synthesis
#16
Natsuki Hasegawa, Shumpei Fujie, Naoki Horii, Eri Miyamoto-Mikami, Katsunori Tsuji, Masataka Uchida, Takafumi Hamaoka, Izumi Tabata, Motoyuki Iemitsu
PURPOSE: Aerobic training (AT) and high-intensity intermittent training (HIIT) reduce arterial stiffness, whereas resistance training (RT) induces deterioration of or no change in arterial stiffness. However, the molecular mechanism of these effects of different exercise modes remains unclear. This study aimed to clarify the difference of different exercise effects on endothelial nitric oxide synthase (eNOS) signaling pathway and arterial stiffness in rats and humans. METHODS: In the animal study, forty 10-week-old male Sprague-Dawley rats were randomly divided into 4groups: sedentary control (CON), AT (treadmill running, 60min at 30m/min, 5days/wk for 8weeks), RT (ladder-climbing, 8-10sets/day, 3days/wk for 8weeks), and HIIT (14repeats of 20-sec swimming session with 10-sec pause between sessions, 4days/wk for 6weeks from 12-week-old) groups (n=10 in each group)...
January 30, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29370091/effects-of-glutamine-and-alanine-supplementation-on-central-fatigue-markers-in-rats-submitted-to-resistance-training
#17
Audrey Yule Coqueiro, Raquel Raizel, Andrea Bonvini, Thaís Hypólito, Allan da Mata Godois, Jéssica Ramos Rocha Pereira, Amanda Beatriz de Oliveira Garcia, Rafael de Souza Bittencourt Lara, Marcelo Macedo Rogero, Julio Tirapegui
Recent evidence suggests that increased brain serotonin synthesis impairs performance in high-intensity intermittent exercise and specific amino acids may modulate this condition, delaying fatigue. This study investigated the effects of glutamine and alanine supplementation on central fatigue markers in rats submitted to resistance training (RT). Wistar rats were distributed in: sedentary (SED), trained (CON), trained and supplemented with alanine (ALA), glutamine and alanine in their free form (G + A), or as dipeptide (DIP)...
January 25, 2018: Nutrients
https://www.readbyqxmd.com/read/29278423/exercise-for-intermittent-claudication
#18
REVIEW
Risha Lane, Amy Harwood, Lorna Watson, Gillian C Leng
BACKGROUND: Exercise programmes are a relatively inexpensive, low-risk option compared with other, more invasive therapies for treatment of leg pain on walking (intermittent claudication (IC)). This is the fourth update of a review first published in 1998. OBJECTIVES: Our goal was to determine whether an exercise programme was effective in alleviating symptoms and increasing walking treadmill distances and walking times in people with intermittent claudication. Secondary objectives were to determine whether exercise was effective in preventing deterioration of underlying disease, reducing cardiovascular events, and improving quality of life...
December 26, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29210958/reliability-and-validity-of-a-submaximal-warm-up-test-for-monitoring-training-status-in-professional-soccer-players
#19
Alireza Rabbani, Mehdi Kargarfard, Craig Twist
Rabbani, A, Kargarfard, M, and Twist, C. Reliability and validity of a submaximal warm-up test for monitoring training status in professional soccer players. J Strength Cond Res 32(2): 326-333, 2018-Two studies were conducted to assess the reliability and validity of a submaximal warm-up test (SWT) in professional soccer players. For the reliability study, 12 male players performed an SWT over 3 trials, with 1 week between trials. For the validity study, 14 players of the same team performed an SWT and a 30-15 intermittent fitness test (30-15IFT) 7 days apart...
February 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29200906/effects-of-intermittent-ladder-climbing-exercise-training-on-mitochondrial-biogenesis-and-endoplasmic-reticulum-stress-of-the-cardiac-muscle-in-obese-middle-aged-rats
#20
Kijin Kim, Nayoung Ahn, Suryun Jung, Solee Park
The aim of this study is to investigate the effects of intermittent ladder-climbing exercise training on mitochondrial biogenesis and ER stress of the cardiac muscle in high fat diet-induced obese middle-aged rats. We induced obesity over 6 weeks of period in 40 male Sprague-Dawley rats around 50 weeks old, and were randomly divided into four experimental groups: chow, HFD, exercise+HFD, and exercise+chow. The exercising groups underwent high-intensity intermittent training using a ladder-climbing and weight exercise 3 days/week for a total of 8 weeks...
November 2017: Korean Journal of Physiology & Pharmacology
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