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Interval training HIIT

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https://www.readbyqxmd.com/read/28935628/effect-of-exercise-induced-lactate-elevation-on-brain-lactate-levels-during-hypoglycemia-in-patients-with-type-1-diabetes-and-impaired-awareness-of-hypoglycemia
#1
Evita C Wiegers, Hanne M Rooijackers, Cees J Tack, Hans J M M Groenewoud, Arend Heerschap, Bastiaan E de Galan, Marinette van der Graaf
Since altered brain lactate handling has been implicated in the development of impaired awareness of hypoglycemia (IAH) in type 1 diabetes, the capacity to transport lactate into the brain during hypoglycemia may be relevant in its pathogenesis. High-intensity interval training (HIIT) increases plasma lactate levels. We compared the effect of HIIT-induced hyperlacticacidemia on brain lactate during hypoglycemia between 1) patients with type 1 diabetes and IAH, 2) patients with type 1 diabetes and normal awareness of hypoglycemia (NAH), and 3) healthy non-diabetic participants (n=6 per group)...
September 21, 2017: Diabetes
https://www.readbyqxmd.com/read/28932907/effects-of-self-paced-interval-and-continuous-training-on-health-markers-in-women
#2
Luke J Connolly, Stephen J Bailey, Peter Krustrup, Jonathan Fulford, Chris Smietanka, Andrew M Jones
PURPOSE: To compare the effects of self-paced high-intensity interval and continuous cycle training on health markers in premenopausal women. METHODS: Forty-five inactive females were randomised to a high-intensity interval training (HIIT; n = 15), continuous training (CT; n = 15) or an inactive control (CON; n = 15) group. HIIT performed 5 × 5 min sets comprising repetitions of 30-s low-, 20-s moderate- and 10-s high-intensity cycling with 2 min rest between sets...
September 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28912129/the-efficacy-of-unsupervised-home-based-exercise-regimens-in-comparison-to-supervised-laboratory-based-exercise-training-upon-cardio-respiratory-health-facets
#3
James Blackwell, Philip J Atherton, Kenneth Smith, Brett Doleman, John P Williams, Jonathan N Lund, Bethan E Phillips
Supervised high-intensity interval training (HIIT) can rapidly improve cardiorespiratory fitness (CRF). However, the effectiveness of time-efficient unsupervised home-based interventions is unknown. Eighteen volunteers completed either: laboratory-HIIT (L-HIIT); home-HIIT (H-HIIT) or home-isometric hand-grip training (H-IHGT). CRF improved significantly in L-HIIT and H-HIIT groups, with blood pressure improvements in the H-IHGT group only. H-HIIT offers a practical, time-efficient exercise mode to improve CRF, away from the laboratory environment...
September 2017: Physiological Reports
https://www.readbyqxmd.com/read/28904878/the-effects-of-different-physical-activities-on-atrial-fibrillation-in-patients-with-hypertension-and-chronic-kidney-disease
#4
Márcio Galindo Kiuchi, Shaojie Chen, Neil Alexander Hoye
BACKGROUND: Atrial fibrillation (AF) is highly common, and is most frequently observed in individuals with hypertension and structural cardiac disease. Sympathetic hyperactivity plays a fundamental role in the progression, maintenance and aggravation of arrhythmia. Endurance exercise training clearly lowers sympathetic activity in sympathoexcitatory disease states, and is well-tolerated by patients with chronic kidney disease (CKD). METHODS: We assessed 50 CKD patients with hypertension...
September 2017: Kidney Research and Clinical Practice
https://www.readbyqxmd.com/read/28893641/high-intensity-interval-training-has-beneficial-effects-on-cardiac-remodeling-through-local-renin-angiotensin-system-modulation-in-mice-fed-high-fat-or-high-fructose-diets
#5
Guilherme de Oliveira Sá, Vívian Dos Santos Neves, Shyrlei R de Oliveira Fraga, Vanessa Souza-Mello, Sandra Barbosa-da-Silva
AIMS: HIIT (high-intensity interval training) has the potential to reduce cardiometabolic risk factors, but the effects on cardiac remodeling and local RAS (renin-angiotensin system) in mice fed high-fat or high-fructose diets still need to be fully addressed. MAIN METHODS: Sixty male C57BL/6 mice (12weeks old) were randomly divided into three groups, control (C), High-fat (HF), or High-fructose diet (HRU) and were monitored for eight weeks before being submitted to the HIIT...
September 8, 2017: Life Sciences
https://www.readbyqxmd.com/read/28879617/high-but-not-moderate-intensity-endurance-training-increases-pain-tolerance-a-randomised-trial
#6
Thomas J O'Leary, Johnny Collett, Ken Howells, Martyn G Morris
PURPOSE: To examine the effect of high-intensity interval training (HIIT) compared to volume-matched moderate-intensity continuous training (CONT) on muscle pain tolerance and high-intensity exercise tolerance. METHODS: Twenty healthy adults were randomly assigned (1:1) to either 6 weeks of HIIT [6-8 × 5 min at halfway between lactate threshold and maximal oxygen uptake (50%Δ)] or volume-matched CONT (~60-80 min at 90% lactate threshold) on a cycle ergometer...
September 6, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28868988/effects-of-resistance-guided-high-intensity-interval-functional-electrical-stimulation-cycling-on-an-individual-with-paraplegia-a-case-report
#7
David R Dolbow, Daniel P Credeur
BACKGROUND AND PURPOSE: Individuals with spinal cord injury (SCI) are more than twice as likely to develop and die from cardio-metabolic diseases as compared to able-bodied. This increased risk is thought to be in part due to accelerated muscle atrophy and reduced blood flow through sublesional arteries. Thus, strategies to recondition paralyzed skeletal muscles may help reduce cardio-metabolic disease risk. The purpose of this case report was to examine the impact of a novel, resistance-guided, high intensity interval training functional electrical stimulation (RG-HIIT-FES) cycling program on cardio-metabolic health in people with chronic SCI...
September 4, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28853029/effect-of-high-intensity-interval-training-on-fitness-fat-mass-and-cardiometabolic-biomarkers-in-children-with-obesity-a-randomised-controlled-trial
#8
Katrin A Dias, Charlotte B Ingul, Arnt E Tjønna, Shelley E Keating, Sjaan R Gomersall, Turid Follestad, Mansoureh S Hosseini, Siri M Hollekim-Strand, Torstein B Ro, Margrete Haram, Else Marie Huuse, Peter S W Davies, Peter A Cain, Gary M Leong, Jeff S Coombes
BACKGROUND: Paediatric obesity significantly increases the risk of developing cardiometabolic diseases across the lifespan. Increasing cardiorespiratory fitness (CRF) could mitigate this risk. High-intensity interval training (HIIT) improves CRF in clinical adult populations but the evidence in paediatric obesity is inconsistent. OBJECTIVES: The objectives of this study were to determine the efficacy of a 12-week, HIIT intervention for increasing CRF and reducing adiposity in children with obesity...
August 29, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28846611/high-intensity-exercise-can-it-protect-you-from-a-fast-food-diet
#9
Christian Duval, Marc-Antoine Rouillier, Rémi Rabasa-Lhoret, Antony D Karelis
The purpose of this study was to assess the ability of high intensity exercise to counteract the deleterious effects of a fast food diet on the cardiometabolic profile of young healthy men. Fifteen men were subjected to an exclusive fast food diet from a popular fast food restaurant chain (three extra value meals/day + optional snack) for 14 consecutive days. Simultaneously, participants were asked to perform each day high intensity interval training (HIIT) (15 × 60 sec sprint intervals (~90% of maximal heart rate)) on a treadmill...
August 26, 2017: Nutrients
https://www.readbyqxmd.com/read/28846513/low-volume-high-intensity-interval-training-is-sufficient-to-ameliorate-the-severity-of-metabolic-syndrome
#10
Joyce S Ramos, Lance C Dalleck, Fabio Borrani, Kassia S Beetham, Matthew P Wallen, Alistair R Mallard, Bronwyn Clark, Sjaan Gomersall, Shelley E Keating, Robert G Fassett, Jeff S Coombes
BACKGROUND: High-intensity interval training (HIIT) is superior to moderate-intensity continuous training (MICT) at improving cardiometabolic risk. However, the optimal volume of HIIT to reduce the severity of the metabolic syndrome (MetS) has yet to be investigated. The aim of this study was to examine the impact of different volumes of HIIT and MICT on MetS severity (MetS z-score). METHODS: This was a substudy of the "Exercise in prevention of Metabolic Syndrome" (EX-MET) multicenter trial, reporting data collected at the Brisbane site...
September 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28843495/high-intensity-interval-versus-moderate-intensity-continuous-training-superior-metabolic-benefits-in-diet-induced-obesity-mice
#11
Ningning Wang, Yang Liu, Yanan Ma, Deliang Wen
AIMS: Exercise is beneficial in obesity, however, the debate about the value of high-intensity interval training (HIIT) vs. moderate-intensity continuous training (MICT) has been long lasting. Therefore, here we have compared the possible beneficial effects of two different exercise training regimes in a mouse model of diet-induced obesity (DIO). MATERIALS AND METHODS: Following 7wk. on high fat diet (HFD), ten-week-old male ICR mice (n=30) were assigned to HIIT, distance-matched MICT or remained sedentary for the next 8 constitutive weeks while maintaining the dietary treatments...
August 23, 2017: Life Sciences
https://www.readbyqxmd.com/read/28811842/the-effect-of-three-different-exercise-training-modalities-on-cognitive-and-physical-function-in-a-healthy-older-population
#12
Carla Coetsee, Elmarie Terblanche
BACKGROUND: Older adults are encouraged to participate in regular physical activity to counter the age-related declines in physical and cognitive health. Literature on the effect of different exercise training modalities (aerobic vs resistance) on these health-related outcomes is not only sparse, but results are inconsistent. In general, it is believed that exercise has a positive effect on executive cognitive function, possibly because of the physiological adaptations through increases in fitness...
2017: European Review of Aging and Physical Activity
https://www.readbyqxmd.com/read/28796128/high-intensity-interval-exercises-acute-impact-on-heart-rate-variability-comparison-between-whole-body-and-cycle-ergometer-protocols
#13
Gustavo Z Schaun, Fabrício B Del Vecchio
Study aimed to compare the effects of two high-intensity interval exercises (HIIT) protocols on heart rate variability (HRV). Twelve young adult males (23.3 ± 3.9 years, 177.8 ± 7.4 cm, 76.9 ± 12.9 kg) volunteered to participate. In a randomized cross-over design, subjects performed two HIIT protocols, one on a cycle ergometer (TBT; eight 20 s bouts at 170% Pmax interspersed by 10 s rest) and another with whole-body calisthenic exercises (MCR; eight 20 s all-out intervals interspersed by 10 s rest). HRV outcomes in the time, frequency and non-linear domains were assessed on three moments: (a) pre-session; (b) immediately post-session; and (c) 24h post-session...
August 4, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28794164/hiit-produces-increases-in-muscle-power-and-free-testosterone-in-male-masters-athletes
#14
P Herbert, L D Hayes, N F Sculthorpe, F M Grace
High-intensity interval training (HIIT) improves peak power output (PPO) in sedentary aging men but has not been examined in masters endurance athletes. Therefore, we investigated whether a six-week program of low-volume HIIT would (i) improve PPO in masters athletes and (ii) whether any change in PPO would be associated with steroid hormone perturbations. Seventeen male masters athletes (60 ± 5 years) completed the intervention, which comprised nine HIIT sessions over six weeks. HIIT sessions involved six 30-s sprints at 40% PPO, interspersed with 3 min active recovery...
October 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28792851/high-intensity-interval-and-moderate-intensity-continuous-training-elicit-similar-enjoyment-and-adherence-levels-in-overweight-and-obese-adults
#15
Chantal A Vella, Katrina Taylor, Devin Drummer
BACKGROUND: High-intensity interval training (HIIT) has been shown to improve cardiometabolic health during supervised lab-based studies but adherence, enjoyment, and health benefits of HIIT performed independently are yet to be understood. We compared adherence, enjoyment, and cardiometabolic outcomes after 8 weeks of HIIT or moderate-intensity continuous training (MICT), matched for energy expenditure, in overweight and obese young adults. METHODS: 17 adults were randomized to HIIT or MICT...
October 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28790929/combined-interval-training-and-post-exercise-nutrition-in-type-2-diabetes-a-randomized-control-trial
#16
Monique E Francois, Cody Durrer, Kevin J Pistawka, Frank A Halperin, Courtney Chang, Jonathan P Little
Background: High-intensity interval training (HIIT) can improve several aspects of cardiometabolic health. Previous studies have suggested that adaptations to exercise training can be augmented with post-exercise milk or protein consumption, but whether this nutritional strategy can impact the cardiometabolic adaptations to HIIT in type 2 diabetes is unknown. Objective: To determine if the addition of a post-exercise milk or protein beverage to a high-intensity interval training (HIIT) intervention improves cardiometabolic health in individuals with type 2 diabetes...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28772048/the-effect-of-exercise-training-on-biventricular-myocardial-strain-in-heart-failure-with-preserved-ejection-fraction
#17
Siddhartha S Angadi, Catherine L Jarrett, Moustafa Sherif, Glenn A Gaesser, Farouk Mookadam
AIMS: High-intensity interval training (HIIT) improves peak oxygen uptake and left ventricular diastology in patients with heart failure with preserved ejection fraction (HFpEF). However, its effects on myocardial strain in HFpEF remain unknown. We explored the effects of HIIT and moderate-intensity aerobic continuous training (MI-ACT) on left and right ventricular strain parameters in patients with HFpEF. Furthermore, we explored their relationship with peak oxygen uptake (VO2peak )...
August 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28747269/high-intensity-interval-training-and-cardiac-autonomic-control-in-individuals-with-metabolic-syndrome-a-randomised-trial
#18
Joyce S Ramos, Lance C Dalleck, Fabio Borrani, Kassia S Beetham, Gregore Iven Mielke, Katrin A Dias, Matthew P Wallen, Shelley E Keating, Robert G Fassett, Jeff S Coombes
BACKGROUND: Insulin resistance has been postulated to play a central role in the co-appearance of various cardiovascular disease risk factors constituting the metabolic syndrome (MetS). There is evidence that altered cardiac autonomic function (CAF) may precede the onset of insulin resistance. Exercise training has been shown to improve CAF in different populations, yet little is known regarding the exercise dose response for CAF. The aim of this study was to investigate the impact of different volumes of high-intensity interval training (HIIT) and traditional moderate-intensity continuous training (MICT) on CAF in participants with MetS...
July 21, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28744226/the-mucosal-immune-function-is-not-compromised-during-a-period-of-high-intensity-interval-training-is-it-time-to-reconsider-an-old-assumption
#19
Dennis-Peter Born, Christoph Zinner, Billy Sperlich
Purpose: The aim of the study was to evaluate the mucosal immune function and circadian variation of salivary cortisol, Immunoglobin-A (sIgA) secretion rate and mood during a period of high-intensity interval training (HIIT) compared to long-slow distance training (LSD). Methods: Recreational male runners (n = 28) completed nine sessions of either HIIT or LSD within 3 weeks. The HIIT involved 4 × 4 min of running at 90-95% of maximum heart rate interspersed with 3 min of active recovery while the LSD comprised of continuous running at 70-75% of maximum heart rate for 60-80 min...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28737586/comparison-of-acute-physiological-and-psychological-responses-between-moderate-intensity-continuous-exercise-and-three-regimes-of-high-intensity-training
#20
Nicole Green, Timothy Wertz, Zachary LaPorta, Adam Mora, Jasmine Serbas, Todd A Astorino
High intensity interval training (HIIT) elicits similar physiological adaptations as moderate intensity continuous training (MICT) despite less time commitment. However, there is debate whether HIIT is more aversive than MICT. This study compared physiological and perceptual responses between MICT and three regimes of HIIT. Nineteen active adults (age = 24.0 ± 3.3 yr) unfamiliar with HIIT initially performed ramp exercise to exhaustion to measure maximal oxygen uptake (VO2 max) and determine workload for subsequent sessions, whose order was randomized...
July 19, 2017: Journal of Strength and Conditioning Research
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