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https://www.readbyqxmd.com/read/28515052/exercise-training-improves-free-testosterone-in-lifelong-sedentary-aging-men
#1
Lawrence Hayes, Peter Herbert, Nicholas Sculthorpe, Fergal Grace
As the impact of high intensity interval training (HIIT) on systemic hormones in aging men is unstudied to date, we investigated whether total testosterone (TT), sex hormone binding globulin (SHBG), free testosterone (free-T), and cortisol (all in serum) were altered following HIIT in a cohort of 22 lifelong sedentary (62 ± 2 years) older men. As HIIT requires preconditioning exercise in sedentary cohorts, participants were tested at three phases, each separated by six weeks' training; baseline (phase A), following conditioning exercise (phase B), and post-HIIT (phase C)...
May 17, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28513103/a-systematic-review-and-meta-analysis-of-interval-training-versus-moderate-intensity-continuous-training-on-body-adiposity
#2
REVIEW
S E Keating, N A Johnson, G I Mielke, J S Coombes
Interval training (including high-intensity interval training [HIIT] and sprint interval training [SIT]) is promoted in both scientific and lay media as being a superior and time-efficient method for fat loss compared with traditional moderate-intensity continuous training (MICT). We evaluated the efficacy of HIIT/SIT when directly compared with MICT for the modulation of body adiposity. Databases were searched to 31 August 2016 for studies with exercise training interventions with minimum 4-week duration. Meta-analyses were conducted for within-group and between-group comparisons for total body fat percentage (%) and fat mass (kg)...
May 17, 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28511954/high-intensity-interval-training-hiit-improves-resting-blood-pressure-metabolic-met-capacity-and-heart-rate-reserve-without-compromising-resting-myocardial-function-in-sedentary-aging-men
#3
Fergal M Grace, Peter Herbert, Adrian D Elliott, Jo Richards, Alexander Beaumont, Nicholas F Sculthorpe
BACKGROUND: This study examined the combination of pre-conditioning exercise with subsequent high intensity interval training (HIIT) on blood pressure, echocardiography, cardiac strain mechanics and maximal metabolic (MET) capacity in sedentary (SED) aging men compared with age matched masters athletes (LEX). METHODS: Using a STROBE compliant observational design, 39 aging male participants (SED; n=22, aged 62.7±5.2yrs) (LEX; n=17, aged=61.1±5.4yrs) were recruited to a study that necessitated three distinct assessment phases; enrolment (Phase A), following pre-conditioning exercise in SED (Phase B), then following 6weeks of HIIT performed once every five days by both groups before reassessment (Phase C)...
May 13, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28495843/treating-fructose-induced-metabolic-changes-in-mice-with-high-intensity-interval-training-insights-in-the-liver-white-adipose-tissue-and-skeletal-muscle
#4
Victor Faria Motta, Thereza Lonzetti Bargut, Marcia Barbosa Aguila, Carlos Alberto Mandarim-de-Lacerda
Fructose-rich caloric sweeteners induce adverse changes in the population metabolism. The study evaluated the effects of high-intensity interval training (HIIT) on a fructose feeding model, focusing on the liver, white adipose tissue (WAT), skeletal muscle, and their interplay. Male C57BL/6 mice were fed for 18 weeks one of the following diets: control (C; 5 % of total energy from fructose), or fructose (F; 55 % of total energy from fructose). In the 10th week, for an additional eight-week period the groups were divided into non-trained (NT) or HIIT groups, totaling four groups: C-NT, C-HIIT, F-NT, and F-HIIT...
May 11, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28493030/ambulatory-blood-pressure-response-to-a-bout-of-hiit-in-metabolic-syndrome-patients
#5
M Ramirez-Jimenez, F Morales-Palomo, J G Pallares, Ricardo Mora-Rodriguez, J F Ortega
PURPOSE: The effectiveness of exercise to lower blood pressure may depend on the type and intensity of exercise. We study the short-term (i.e., 14-h) effects of a bout of high-intensity aerobic interval training (HIIT) on blood pressure in metabolic syndrome (MetS) patients. METHODS: Nineteen MetS patients (55.2 ± 7.3 years, 6 women) entered the study. Eight of them were normotensive and eleven hypertensive according to MetS threshold (≥130 mmHg for SBP and/or ≥85 mmHg for DBP)...
May 10, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28488826/soccer-training-high-intensity-interval-training-is-mood-disturbing-while-small-sided-games-ensure-mood-balance
#6
Okba Selmi, Monoem Haddad, Lina Majed, Wissam Ben Khalifa, Marzougui Hamza, Karim Chamari
BACKGROUNDː The aim of the study was to compare the effects of high-intensity intermittent training (HIIT) versus small-sided games (SSG) in soccer on both the physiological responses and the mood state of players. METHODS: Sixteen professional soccer players took part in the study (age: 24.1±0.9 years). Testing of players was conducted on separate days in a randomized and counter-balanced order (each training session: 28-min: 4x4 minutes work with 3-min of passive recovery in-between)...
May 9, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28488137/acute-effects-of-high-intensity-interval-training-and-moderate-intensity-continuous-training-sessions-on-cardiorespiratory-parameters-in-healthy-young-men
#7
Gustavo Zaccaria Schaun, Cristine Lima Alberton, Diego Oliveira Ribeiro, Stephanie Santana Pinto
PURPOSE: The aim of the present study was to compare the energy expenditure (EE) during and after two treadmill protocols, high-intensity interval training (HIIT) and moderate continuous training (CONT), in young adult men. METHODS: The sample was comprised by 26 physically active men aged between 18 and 35 years engaged in aerobic training programs. They were divided into two groups: HIIT (n = 14) which performed eight 20 s bouts at 130% of the velocity associated with the maximal oxygen consumption on a treadmill with 10 s of passive rest, or CONT (n = 12) which performed 30 min running on a treadmill at a submaximal velocity equivalent to 90-95% of the heart rate associated with the anaerobic threshold...
May 9, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28482759/caffeine-prevents-high-intensity-exercise-induced-increase-in-enzymatic-antioxidant-and-na-k-atpase-activities-and-reduction-of-anxiolytic-like-behaviour-in-rats
#8
Juliano M Vieira, Fabiano B Carvalho, Jessié M Gutierres, Mayara S P Soares, Pathise S Oliveira, Maribel A Rubin, Vera M Morsch, Maria Rosa Schetinger, Roselia M Spanevello
OBJECTIVE: Here we investigated the impact of chronic high-intensity interval training (HIIT) and caffeine consumption on the activities of Na(+)-K(+)-ATPase and enzymes of the antioxidant system, as well as anxiolytic-like behaviour in the rat brain. METHODS: Animals were divided into groups: control, caffeine (4 mg/kg), caffeine (8 mg/kg), HIIT, HIIT plus caffeine (4 mg/kg) and HIIT plus caffeine (8 mg/kg). Rats were trained three times per week for 6 weeks, and caffeine was administered 30 minutes before training...
May 8, 2017: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/28482361/acute-hypotension-after-high-intensity-interval-exercise-in-metabolic-syndrome-patients
#9
Felix Morales-Palomo, Miguel Ramirez-Jimenez, Juan Fernando Ortega, Jesús G Pallarés, Ricardo Mora-Rodriguez
The purpose of this study was to compare the magnitude of post-exercise hypotension (PEH) after a bout of cycling exercise using high-intensity interval training (HIIT) in comparison to a bout of traditional moderate-intensity continuous exercise (CE). After supine rest 14 obese (31±1 kg·m(-2)) middle-age (57±2 y) metabolic syndrome patients (50% hypertensive) underwent a bout of HIIT or a bout of CE in a random order and then returned to supine recovery for another 45 min. Exercise trials were isocaloric and compared to a no-exercise trial (CONT) of supine rest for a total of 160 min...
May 8, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28480961/comparison-of-the-acute-effects-of-high-intensity-interval-training-and-continuous-aerobic-walking-on-inhibitory-control
#10
Shih-Chun Kao, Daniel R Westfall, Jack Soneson, Brendon Gurd, Charles H Hillman
The purpose of this study was to investigate the effects of a single bout of high-intensity interval training (HIIT) and continuous aerobic exercise (CAE) on inhibitory control. The P3 component of the stimulus-locked ERP was collected in 64 young adults during a modified flanker task following 20 min of seated rest, 20 min of CAE, and 9 min of HIIT on separate days in counterbalanced order. Participants exhibited shorter overall reaction time following CAE and HIIT compared to seated rest. Response accuracy improved following HIIT in the task condition requiring greater inhibitory control compared to seated rest and CAE...
May 8, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28479954/the-effect-of-high-intensity-interval-run-training-on-cross-sectional-area-of-the-vastus-lateralis-in-untrained-college-students
#11
Rebekah R Estes, Amy Malinowski, Meredith Piacentini, David Thrush, Eric Salley, Cassidy Losey, Erik Hayes
Aerobic cycling has been repeatedly shown to induce hypertrophy in skeletal muscle across a variety of populations, while there has been a lack of investigation into the impact of running upon hypertrophy. An increasingly popular model of aerobic exercise is high-intensity interval training (HIIT); in addition to its positive impact upon cardiovascular health, HIIT may be sufficient for inducing significant muscular hypertrophy. Therefore, the purpose of this investigation was to examine the influence of a high-intensity interval running protocol upon hypertrophy of the vastus lateralis in an untrained, young population...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28479953/effects-of-simulated-altitude-on-maximal-oxygen-uptake-and-inspiratory-fitness
#12
Nicole C Biggs, Benjamin S England, Nicole J Turcotte, Melissa R Cook, Alyne L Williams
Aerobic exercise at altitude has shown an increase in maximal oxygen uptake. Similar effects have been replicated by way of simulated altitude training, which have influenced various advances in the field of exercise science. Elevation Training Masks© (ETM) claim to stimulate cardiorespiratory fitness improvements similar to training at altitude, however, there is little research to support this claim. The purpose of this study was to research the effect that a hypoxia-inducing mask would have on cardiorespiratory fitness and pulmonary function through the use of a high intensity interval training (HIIT) running program...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/28476924/molecular-effects-of-exercise-training-in-patients-with-cardiovascular-disease-focus-on-skeletal-muscle-endothelium-and-myocardium
#13
Volker Adams, Bernhard Reich, Madlen Uhlemann, Josef Niebauer
For decades we know that exercise training exerts beneficial effects to the human body and clear evidence is available that a higher fitness level is associated with a lower incidence of suffering premature cardiovascular death. Despite this knowledge it took some time also to incorporate physical exercise training into the treatment plan for patients with cardiovascular disease (CVD). In recent years, in addition to continuous exercise training further training modalities like high intensity interval training (HIIT) and pyramid training have been introduced for CAD patients...
May 5, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28471050/high-intensity-interval-training-using-whole-body-exercises-training-recommendations-and-methodological-overview
#14
REVIEW
Alexandre F Machado, Julien S Baker, Aylton J Figueira Junior, Danilo S Bocalini
HIIT whole body (HWB)-based exercise is a new calisthenics exercise programme approach that can be considered an effective and safe method to improve physical fitness and body composition. HWB is a method that can be applied to different populations and ages. The purpose of this study was to describe possible methodologies for performing physical training based on whole-body exercise in healthy subjects. The HWB sessions consist of a repeated stimulus based on high-intensity exercise that also include monitoring time to effort, time to recuperation and session time...
May 4, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28470361/use-of-biotechnology-devices-to-analyse-fatigue-process-in-swimming-training
#15
V J Clemente-Suárez, J J Arroyo-Toledo
The aim of the present research was to analyze the acute psycho-physiological response during a high intensity interval training (HIIT) session of trained swimmers. We analyzed blood lactate concentration, heart rate, heart rate variability (HRV), arms isometric strength, rating of perceived exertion (RPE) and cortical arousal before and after a HIIT session in 14 trained swimmers (16.2 ± 2.6 years 169.1 ± 10.2 cm 61.3 ± 9.9 kg). HIIT session consisted in: 4 × 10 m tethered swimming resting 90 s between sets, 3 min rest, 16 × 25 m maximum speed swimming resting 30 s between sets...
June 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28469752/il-6-antioxidant-capacity-and-muscle-damage-markers-following-high-intensity-interval-training-protocols
#16
Lukas Cipryan
The aim of this study was to investigate changes of interleukin-6 (IL-6), total antioxidant capacity (TAC) and muscle damage markers (creatine kinase (CK), myoglobin and lactate dehydrogenase (LDH)) in response to three different high-intensity interval training (HIIT) protocols of identical external work. Twelve moderately-trained males participated in the three HIIT trials which consisted of a warm-up, followed by 12 min of 15 s, 30 s or 60 s HIIT sequences with the work/rest ratio 1. The biochemical markers of inflammation, oxidative stress and muscle damage were analysed POST, 3 h and 24 h after the exercise...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28460601/a-scoping-review-of-the-psychological-responses-to-interval-exercise-is-interval-exercise-a-viable-alternative-to-traditional-exercise
#17
Matthew J Stork, Laura E Banfield, Martin J Gibala, Kathleen A Martin Ginis
While considerable evidence suggests that interval exercise confers numerous physiological adaptations linked to improved health, its psychological consequences and behavioural implications are less clear and the subject of intense debate. The purpose of this scoping review was to catalogue studies investigating the psychological responses to interval exercise in order to identify what psychological outcomes have been assessed, the research methods used, and the results. A secondary objective was to identify research issues and gaps...
May 2, 2017: Health Psychology Review
https://www.readbyqxmd.com/read/28456149/plasma-chemerin-in-young-untrained-men-association-with-cardio-metabolic-traits-and-physical-performance-and-response-to-intensive-interval-training
#18
Nejmeddine Ouerghi, Mohamed Kacem Ben Fradj, Marwa Khammassi, Moncef Feki, Naziha Kaabachi, Anissa Bouassida
OBJECTIVES: Chemerin is an adipose tissue-derived adipokine thought to decrease insulin sensitivity and increase cardiometabolic risk. This study aimed to assess the association of chemerin with cardiometabolic risk and physical performance and examine its response to high-intensity interval training (HIIT). METHODS: Eighteen young men have been applied a HIIT program during 8 weeks. Plasma chemerin together with several cardiometabolic factors and physical performance indices were determined before and after the training program...
February 15, 2017: Neuro Endocrinology Letters
https://www.readbyqxmd.com/read/28451599/is-home-based-high-intensity-interval-training-cycling-feasible-and-safe-for-patients-with-knee-osteoarthritis-study-protocol-for-a-randomized-pilot-study
#19
Justin W L Keogh, Josephine Grigg, Christopher J Vertullo
BACKGROUND: Osteoarthritis (OA) is a degenerative joint disease affecting the knee joint of many middle-aged and older adults. As OA symptoms typically involve knee pain and stiffness, individuals with knee OA are often insufficiently physically active, have low levels of physical function, and are at increased risk of other comorbidities and reduced quality of life. While moderate-intensity continuous training (MICT) cycling is often recommended, little is known about the feasibility, safety, and benefits of high-intensity interval training (HIIT) cycling for this population, even though the feasibility, safety, and benefits of HIIT have been demonstrated in other chronic disease groups...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28445078/effects-of-high-intensity-interval-training-on-canoeing-performance
#20
Ming-Ta Yang, Mien-Mien Lee, Shu-Ching Hsu, Kuei-Hui Chan
The purpose of this study was to compare the effects of high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT) utilizing a canoeing ergometer on endurance determinants, as well as aerobic and anaerobic performances among flat-water canoeists. Fourteen well-trained male flat-water canoeists were divided into an HIIT group or an MICT group. All subjects performed a continuous graded exercise test (GXT) and three fixed-distance (200, 500, and 1000 m) performance tests on a canoeing ergometer to determine canoeing economy, peak oxygen uptake (VO2peak), and power at VO2peak, and to calculate the critical velocity (CV) and anaerobic work capacity before and after the training programmes...
April 26, 2017: European Journal of Sport Science
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