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High intensity exercise

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https://www.readbyqxmd.com/read/29791970/effect-of-high-intensity-resistance-circuit-based-training-in-hypoxia-on-aerobic-performance-and-repeat-sprint-ability
#1
Domingo J Ramos-Campo, Ismael Martínez-Guardado, Guillermo Olcina, Cristian Marín-Pagán, Francisco J Martínez-Noguera, Jorge Carlos-Vivas, Pedro E Alcaraz, Jacobo A Rubio-Arias
Recent acute studies have shown that high-intensity resistance circuit-based (HRC) training in hypoxia increases metabolic stress. However, no intervention studies have yet proven their effectiveness. This study aimed to analyse the effect of 8 weeks of HRC in hypoxia on aerobic performance, resting energy expenditure (REE), repeat sprint ability (RSA) and haematological variables. Twenty-eight subjects were assigned to hypoxia (FiO2 =15%; HRChyp : n=15; age: 24.6±6.8 years; height: 177.4±5.9 cm; weight: 74...
May 23, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29791649/bouts-of-exercise-elicit-discordant-testosterone-cortisol-ratios-in-runners-and-non-runners
#2
Thiago Paes de Barros De Luccia, José Eduardo Soubhia Natali, Alexandre Moreira, José Guilherme Chaui-Berlinck, José Eduardo Pereira Wilken Bicudo
OBJECTIVE: The testosterone:cortisol ratio (T:C) is suggested to be used in order to examine whether physical exercise generates either a "catabolic environment" or an "anabolic environment". The present study aims to evaluate the acute time-course profile of cortisol and testosterone due to an episode of physical exercise. A biphasic profile in the T:C ratio response was hypothesized. MATERIALS AND METHODS: Morning sessions of treadmill running at two different intensities (Heart Rate at 65% and 80% of the maximum cardiac reserve) were performed by 6 male non-runners (NR) and 12 trained male runners (subdivided into trained runners T1 and T2)...
May 17, 2018: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29788876/exploiting-significance-of-physical-exercise-in-prevention-of-gastrointestinal-disorders
#3
Jan Bilski, Agnieszka Mazur-Bialy, Marcin Magierowski, Slawomir Kwiecien, Dagmara Wojcik, Agata Ptak-Belowska, Marcin Surmiak, Aneta Targosz, Katarzyna Magierowska, Tomasz Brzozowski
BACKGROUND: Physical activity can be involved in the prevention of gastrointestinal (GI)-tract diseases, however, the results regarding the volume and the intensity of exercise considered as beneficial for protection of gastrointestinal organs are conflicting. AIMS AND METHODS: The main objective of this review is to provide a comprehensive and updated overview on the beneficial and harmful effects of physical activity on the gastrointestinal tract. We attempted to discuss recent evidence regarding the association between different modes and intensity levels of exercise and physiological functions of the gut and gut pathology...
May 21, 2018: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29785399/timing-of-exercise-affects-glycemic-control-in-type-2-diabetes-patients-treated-with-metformin
#4
Tao Huang, Chunyan Lu, Moritz Schumann, Shenglong Le, Yifan Yang, Haihui Zhuang, Qingwei Lu, Jinsheng Liu, Petri Wiklund, Sulin Cheng
Objective: The purpose of the study was to examine the acute effects of the timing of exercise on the glycemic control during and after exercise in T2D. Methods: This study included 26 T2D patients (14 women and 12 men) who were treated with metformin. All patients were tested on four occasions: metformin administration alone (Metf), high-intensity interval training (HIIT) performed at 30 minutes (EX30), 60 minutes (EX60), and 90 minutes (EX90) postbreakfast, respectively...
2018: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29785255/feasibility-of-high-intensity-training-in-asthma
#5
L L Toennesen, E D Soerensen, M Hostrup, C Porsbjerg, J Bangsbo, V Backer
Background: High-intensity interval training is an effective and popular training regime but its feasibility in untrained adults with asthma is insufficiently described. Objective: The randomized controlled trial 'EFFORT Asthma' explored the effects of behavioural interventions including high-intensity interval training on clinical outcomes in nonobese sedentary adults with asthma. In this article we present a sub analysis of data aiming to evaluate if patients' pre-intervention levels of asthma control, FEV1, airway inflammation and airway hyperresponsiveness (AHR) predicted their training response to the high-intensity interval training program, measured as increase in maximal oxygen consumption (VO2 max)...
2018: European Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29783064/aerobic-resistance-or-combined-training-a-systematic-review-and-meta-analysis-of-exercise-to-reduce-cardiovascular-risk-in-adults-with-metabolic-syndrome
#6
Michael A Wewege, Jeanette M Thom, Kerry-Anne Rye, Belinda J Parmenter
BACKGROUND AND AIMS: Exercise is beneficial to individuals with metabolic syndrome (MetS). An understudied group, who represent the majority of the MetS population, are individuals who have not developed diabetes. This review examined aerobic, resistance and combined (aerobic + resistance) exercise for cardiovascular risk factors in MetS without diabetes. METHODS: Eight electronic databases were searched up to September 2017 for randomised controlled trials >4 weeks in duration that compared an exercise intervention to the non-exercise control in MetS without diabetes...
May 3, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29782476/acute-neuromuscular-adaptations-in-response-to-low-intensity-blood-flow-restricted-exercise-and-high-intensity-resistance-exercise-are-there-any-differences-erratum
#7
Pedro Fatela, Joana F Reis, Goncalo V Mendonca, Toma S Freitas, Maria J Valamatos, Janne Avela, Pedro Mil-Homens
No abstract text is available yet for this article.
June 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29782040/two-repetitive-bouts-of-intense-eccentric-concentric-jaw-exercises-reduce-experimental-muscle-pain-in-healthy-subjects
#8
Rosaria Bucci, Frank Lobbezoo, Ambrosina Michelotti, Michail Koutris
BACKGROUND: High-intensity eccentric-concentric contractions of the jaw-closing muscles induce muscle soreness, fatigue, and functional impairment of the jaw, resembling the symptoms of myalgia, according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). However, it is claimed that repetition of similar exercises can minimize these detrimental effects. OBJECTIVE: This study aimed to evaluate the response of jaw closing muscles following two series of intense eccentric-concentric exercises of the masticatory muscles in healthy subjects...
May 21, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29781941/cardiopulmonary-demand-of-16-kg-kettlebell-snatches-in-simulated-girevoy-sport
#9
Margaux Chan, Martin J MacInnis, Sarah Koch, Kristin E MacLeod, Keith R Lohse, Maria E Gallo, A William Sheel, Michael S Koehle
Chan, M, MacInnis, MJ, Koch, S, MacLeod, KE, Lohse, KR, Gallo, ME, Sheel, AW, and Koehle, MS. Cardiopulmonary demand of 16-kg kettlebell snatches in simulated Girevoy Sport. J Strength Cond Res XX(X): 000-000, 2018-Kettlebell lifting has become popular both as a strength and conditioning training tool and as a sport in and of itself: Girevoy Sport (GS). Although several kettlebell multimovement protocols have been analyzed, little research has attempted to quantify the aerobic stimulus of the individual events in GS, which could better inform kettlebell-related exercise prescription...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781921/exercise-periodization-over-the-year-improves-metabolic-syndrome-and-medication-use
#10
Felix Morales-Palomo, Miguel Ramirez-Jimenez, Juan Fernando Ortega, Ricardo Mora-Rodriguez
PURPOSE: We aimed to determine if yearly repeated exercise training reduces metabolic syndrome (MetS) and the use of medicines to control MetS components. METHODS: Fifty five MetS individuals were randomized into a TRAIN group that underwent two yearly programs of 16-week of high intensity interval training (HIIT) or a non-exercising CONT group. We measured the evolution of all five MetS components, cardiorespiratory fitness (CRF; assessed by VO2PEAK) and medicine use, at baseline (0 months), mid (12 months) and end-point (24 months)...
May 2, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29781580/neuromuscular-electrical-stimulation-compared-to-volitional-exercise-in-improving-muscle-function-in-rheumatoid-arthritis-a-randomized-pilot-study
#11
Sara R Piva, Samannaaz S Khoja, Frederico G S Toledo, Mary Chester Wasko, G Kelley Fitzgerald, Bret H Goodpaster, Clair N Smith, Anthony Delitto
OBJECTIVES: To compare the feasibility and effectiveness of Neuromuscular Electrical Stimulation (NMES) with high-intensity volitional resistance training in improving muscle structure and function, and physical function in patients with rheumatoid arthritis (RA). We also described pre- and post-intervention values of myocyte characteristics. METHODS: Two-group single-blinded pilot randomized study in adults with RA. Participants were assigned to 36 sessions over 16 weeks of NMES (n=31) or volitional training (n=28)...
May 21, 2018: Arthritis Care & Research
https://www.readbyqxmd.com/read/29781539/intermittent-resistance-exercise-and-obesity-considered-separately-or-combined-impair-spermatic-parameters-in-adult-male-wistar-rats
#12
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/29780326/effects-of-ginseng-supplementation-and-endurance-exercise-in-the-artery-specific-vascular-responsiveness-of-diabetic-and-sedentary-rats
#13
Juan M Murias, Mao Jiang, Tomasz Dzialoszynski, Earl G Noble
This study examined the effects of 12 weeks North-American ginseng supplementation, exercise training, and sedentary behavior on vascular responses in type I diabetic rats. The following hypotheses were tested: (1) ginseng supplementation would result in improved vascular responsiveness and sensitivity; (2) exercise training would result in further improvement in these vascular responses; (3) control rats with no access to exercise would show a depressed vascular response compared to control rats that were not exposed to a sedentary lifestyle...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29777386/substrate-metabolism-during-ironman-triathlon-different-horses-on-the-same-courses
#14
Ed Maunder, Andrew E Kilding, Daniel J Plews
Ironman triathlons are ultra-endurance events of extreme duration. The performance level of those competing varies dramatically, with elite competitors finishing in ~ 8:00:00, and lower performing amateurs finishing in ~ 14-15:00:00. When applying appropriate values for swimming, cycling and running economies to these performance times, it is demonstrated that the absolute energy cost of these events is high, and the rate of energy expenditure increases in proportion with the athlete's competitive level...
May 18, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29775986/effects-of-two-training-programs-on-transcriptional-levels-of-neurotrophins-and-glial-cells-population-in-hippocampus-of-experimental-multiple-sclerosis
#15
Maryam Naghibzadeh, Rouhollah Ranjbar, Mohammad Reza Tabandeh, Abdolhamid Habibi
The aim of the present study was to investigate the effects of high-intensity interval training (HIIT) versus low-intensity continuous training (LICT) on transcriptional levels of neurotrophic factors and oligodendrocyte/microglia cell loss in a cuprizone (CP) induced animal model of demyelination. Male C57BL/6 mice were assigned to six groups: control (C), cuprizone-induced demyelination (CP), interval training (IT), continuous training (CT), IT plus CP (ITCP), and CT plus CP (CTCP). Training programs on the treadmill were performed for four weeks, and then demyelination was induced by feeding mice a diet containing 0...
May 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29775985/sensorimotor-exercises-and-enhanced-trunk-function-a-randomized-controlled-trial
#16
Steffen Mueller, Tilman Engel, Juliane Mueller, Josefine Stoll, Heiner Baur, Frank Mayer
The aim of this study was to investigate the effect of a 6-week sensorimotor or resistance training on maximum trunk strength and response to sudden, high-intensity loading in athletes.Forty-three healthy, well-trained participants were randomized into sensorimotor (SMT; n=11), resistance training (RT; n=16) and control groups (CG; n=16). Treatment groups received either sensorimotor training (SMT) or resistance training (RT) for 6 weeks, 3 times a week. At baseline and after 6 weeks of intervention, participants' maximum isokinetic strength in trunk rotation and extension was tested (concentric/eccentric 30°/s)...
May 18, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29774489/the-role-of-lifestyle-in-male-infertility-diet-physical-activity-and-body-habitus
#17
REVIEW
Russell P Hayden, Ryan Flannigan, Peter N Schlegel
PURPOSE OF REVIEW: Increasing attention to primary and secondary prevention of male infertility through modifiable lifestyle factors has gained traction amongst both patients and infertility specialists. In this review, the available evidence of modifiable lifestyle choices, specifically diet, physical activity, and body habitus, are evaluated. RECENT FINDINGS: Studies examining diet, exercise/physical activity, and body habitus are characterized by conflicting conclusions, difficult confounders, and imperfect end points to judge male reproductive potential...
May 17, 2018: Current Urology Reports
https://www.readbyqxmd.com/read/29772567/the-renin-angiotensin-system-not-the-kinin-kallikrein-system-affects-post-exercise-proteinuria
#18
Günnur Koçer, Filiz Basralı, Oktay Kuru, Ümit Kemal Şentürk
BACKGROUND/AIMS: Temporary proteinuria post-exercise is common and is caused predominantly by renal haemodynamic alterations. One reason is up-regulation of angiotensin II (Ang II) due to the reducing effect of angiotensin-converting enzyme (ACE) inhibitors. However, another, ignored, reason could be the kininase effect of ACE inhibition. This study investigated how ACE inhibition reduces post-exercise proteinuria: by either Ang II up-regulation inhibition or bradykinin elevation due to kininase activity inhibition...
May 17, 2018: Nephron
https://www.readbyqxmd.com/read/29771966/the-effect-of-chronic-progressive-dose-sodium-bicarbonate-ingestion-on-crossfit-like-performance-a-double-blind-randomized-cross-over-trial
#19
Krzysztof Durkalec-Michalski, Emilia E Zawieja, Tomasz Podgórski, Igor Łoniewski, Bogna E Zawieja, Marta Warzybok, Jan Jeszka
BACKGROUND: Sodium bicarbonate (SB) has been proposed as an ergogenic aid, as it improves high-intensity and resistance exercise performance. However, no studies have yet investigated SB application in CrossFit. This study examined the effects of chronic, progressive-dose SB ingestion on CrossFit-like performance and aerobic capacity. METHODS: In a randomized, double-blind, cross-over trial, 21 CrossFit-trained participants were randomly allocated to 2 groups and underwent 2 trials separated by a 14-day washout period...
2018: PloS One
https://www.readbyqxmd.com/read/29771824/psychological-and-behavioral-responses-to-interval-and-continuous-exercise
#20
Matthew J Stork, Martin J Gibala, Kathleen A Martin Ginis
PURPOSE: To compare psychological responses to, and preferences for, moderate-intensity continuous training (MICT), high-intensity interval training (HIIT), and sprint interval training (SIT) among inactive adults; and to investigate the relationships between affect, enjoyment, exercise preferences, and subsequent exercise behavior over a 4-wk follow-up period. METHODS: Thirty inactive men and women (21.23±3.81 y), inexperienced with HIIT or SIT, completed three trials of cycle ergometer exercise in random order on separate days: MICT (45min continuous; ~70-75% of heart rate maximum (HRmax)); HIIT (10x1 min bouts at ~85-90%HRmax with 1-min recovery periods); and SIT (3x20-s "all-out" sprints with 2-min recovery periods)...
May 16, 2018: Medicine and Science in Sports and Exercise
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