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High-Intensity Interval Training

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https://www.readbyqxmd.com/read/28729841/prevalence-of-non-responders-for-glucose-control-markers-after-10-weeks-of-high-intensity-interval-training-in-adult-women-with-higher-and-lower-insulin-resistance
#1
Cristian Álvarez, Rodrigo Ramírez-Campillo, Robinson Ramírez-Vélez, Mikel Izquierdo
Background: Exercise training improves performance and biochemical parameters on average, but wide interindividual variability exists, with individuals classified as responders (R) or non-responders (NRs), especially between populations with higher or lower levels of insulin resistance. This study assessed the effects of high-intensity interval training (HIIT) and the prevalence of NRs in adult women with higher and lower levels of insulin resistance. Methods: Forty adult women were assigned to a HIIT program, and after training were analyzed in two groups; a group with higher insulin resistance (H-IR, 40 ± 6 years; BMI: 29...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28727846/effects-of-high-intensity-interval-versus-mild-intensity-endurance-training-on-metabolic-phenotype-and-corticosterone-response-in-rats-fed-a-high-fat-or-control-diet
#2
Youqing Shen, Guoyuan Huang, Bryan P McCormick, Tao Song, Xiangfeng Xu
The aim of the present study was to compare the effects of high-intensity interval training (HI) to mild-intensity endurance training (ME), combined with a high-fat diet (HFD) or control diet (CD) on metabolic phenotype and corticosterone levels in rats. Fifty-three rats were randomized to 6 groups according to diet and training regimen as follows: CD and sedentary (CS, n = 11), CD and ME (CME, n = 8), CD and HI (CHI, n = 8), HFD and sedentary (HS, n = 10), HFD and ME (HME, n = 8), and HFD and HI (HHI, n = 8)...
2017: PloS One
https://www.readbyqxmd.com/read/28726550/exploring-the-impact-of-high-intensity-interval-training-on-adolescents-objectively-measured-physical-activity-findings-from-a-randomized-controlled-trial
#3
Sarah A Costigan, Nicola D Ridgers, Narelle Eather, Ronald C Plotnikoff, Nigel Harris, David R Lubans
High Intensity Interval Training (HIIT) may be effective for accumulating VPA. However, the contribution of HIIT to overall physical activity is unknown. Our primary aim was to explore the impact of school-based HIIT on physical activity. The secondary aim was to explore within-individual changes in physical activity after participating in HIIT. Participants [n = 65; 15.8(0.6)years] were randomized to a HIIT or control group. Intervention groups participated in three HIIT sessions/week. GENEActiv accelerometers assessed objective physical activity at baseline and week-one, to detect changes in MPA and VPA...
July 20, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28722022/opioid-release-after-high-intensity-interval-training-in-healthy-human-subjects
#4
Tiina Saanijoki, Lauri Tuominen, Jetro J Tuulari, Lauri Nummenmaa, Eveliina Arponen, Kari Kalliokoski, Jussi Hirvonen
Central opioidergic mechanisms may modulate the positive effects of physical exercise such as mood elevation and stress reduction. How exercise intensity and concomitant affective changes affect central opioidergic responses is unknown. We studied the effects of acute physical exercise on the cerebral μ-opioid receptors (MOR) of 22 healthy recreationally active males using positron emission tomography (PET) and the MOR-selective radioligand [(11)C]carfentanil. MOR binding was measured in three conditions on separate days: after a 60-min aerobic moderate-intensity exercise session, after a high-intensity interval training (HIIT) session, and after rest...
July 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28711517/prevention-of-type-2-diabetes-mellitus-in-polycystic-ovary-syndrome-a-review
#5
REVIEW
Safa Anwar, Nigar Shikalgar
Polycystic ovary syndrome (PCOS) is recognized as one of the most common endocrinopathies in women of reproductive age, associated with metabolic sequelae which includes increased risk factors for impaired glucose tolerance (IGT), type 2 diabetes mellitus (DM2) and cardiovascular disease (CVD). The adverse effects of DM2 affects a woman throughout her lifespan. Health care expenditure of DM2 highlights the need for prevention through appropriate screening, diagnosis and intervention. Lifestyle modification (LSM) programs that include diet and/or physical activity are suggested for patients characterized as prediabetic to delay the onset of adult DM2...
July 8, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28708930/effects-of-high-intensity-aerobic-interval-training-on-cardiovascular-disease-risk-in-testicular-cancer-survivors-a-phase-2-randomized-controlled-trial
#6
Scott C Adams, Darren S DeLorey, Margie H Davenport, Michael K Stickland, Adrian S Fairey, Scott North, Alexander Szczotka, Kerry S Courneya
BACKGROUND: Testicular cancer survivors (TCS) have an increased risk of treatment-related cardiovascular disease (CVD), which may limit their overall survival. We evaluated the effects of high-intensity aerobic interval training (HIIT) on traditional and novel CVD risk factors and surrogate markers of mortality in a population-based sample of TCS. METHODS: This phase 2 trial (ClinicalTrials.gov identifier NCT02459132) randomly assigned 63 TCS to usual care (UC) or 12 weeks of supervised HIIT (ie, alternating periods of vigorous-intensity and light-intensity aerobic exercise)...
July 14, 2017: Cancer
https://www.readbyqxmd.com/read/28708479/the-essential-role-of-exercise-in-the-management-of-type-2-diabetes
#7
REVIEW
John P Kirwan, Jessica Sacks, Stephan Nieuwoudt
Exercise is typically one of the first management strategies advised for patients newly diagnosed with type 2 diabetes. Together with diet and behavior modification, exercise is an essential component of all diabetes and obesity prevention and lifestyle intervention programs. Exercise training, whether aerobic or resistance training or a combination, facilitates improved glucose regulation. High-intensity interval training is also effective and has the added benefit of being very time-efficient. While the efficacy, scalability, and affordability of exercise for the prevention and management of type 2 diabetes are well established, sustainability of exercise recommendations for patients remains elusive...
July 2017: Cleveland Clinic Journal of Medicine
https://www.readbyqxmd.com/read/28706859/role-of-metabolic-stress-for-enhancing-muscle-adaptations-practical-applications
#8
REVIEW
Marcelo Conrado de Freitas, Jose Gerosa-Neto, Nelo Eidy Zanchi, Fabio Santos Lira, Fabrício Eduardo Rossi
Metabolic stress is a physiological process that occurs during exercise in response to low energy that leads to metabolite accumulation [lactate, phosphate inorganic (Pi) and ions of hydrogen (H(+))] in muscle cells. Traditional exercise protocol (i.e., Resistance training) has an important impact on the increase of metabolite accumulation, which influences hormonal release, hypoxia, reactive oxygen species (ROS) production and cell swelling. Changes in acute exercise routines, such as intensity, volume and rest between sets, are determinants for the magnitude of metabolic stress, furthermore, different types of training, such as low-intensity resistance training plus blood flow restriction and high intensity interval training, could be used to maximize metabolic stress during exercise...
June 26, 2017: World Journal of Methodology
https://www.readbyqxmd.com/read/28706490/effects-of-6-weeks-high-intensity-interval-training-in-schoolchildren-with-insulin-resistance-influence-of-biological-maturation-on-metabolic-body-composition-cardiovascular-and-performance-non-responses
#9
Cristian Alvarez, Rodrigo Ramírez-Campillo, Robinson Ramírez-Vélez, Mikel Izquierdo
Background: Previous studies have observed significant heterogeneity in the magnitude of change in measures of metabolic response to exercise training. There are a lack of studies examining the prevalence of non-responders (NRs) in children while considering other potential environmental factors involved such as biological maturation. Aim: To compare the effects and prevalence of NRs to improve the insulin resistance level (by HOMA-IR), as well as to other anthropometric, cardiovascular, and performance co-variables, between early (EM) and normal maturation (NM) in insulin-resistance schoolchildren after 6-weeks of HIIT...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28704315/appetite-regulations-after-sprint-exercise-under-hypoxic-condition-in-female-athletes
#10
Chihiro Kojima, Nobukazu Kasai, Aya Ishibashi, Yukako Murakami, Kumiko Ebi, Kazushige Goto
The present study determined changes in appetite-regulating hormones and energy intake after high-intensity interval exercise (HIIT) under hypoxic conditions in trained female athletes. Fifteen female athletes completed three trials on different days of either HIIT under hypoxic conditions (HYP), HIIT under normoxic conditions (NOR), or rest in normoxia (CON). Exercise trials consisted of two successive sets of eight repeated bouts of a 6-s maximal sprint separated by a 30-s rest. Blood samples were obtained to measure plasma acylated ghrelin, glucagon-like peptide-1 (GLP-1), and metabolite concentrations...
July 12, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28702435/interval-and-continuous-aerobic-exercise-training-similarly-increase-cardiac-function-and-autonomic-modulation-in-infarcted-mice
#11
Cesar Cavinato Cal Abad, Ademir Manuel do Nascimento, Leandro Eziquiel Dos Santos, Diego Figueroa, Pamella Ramona, Michele Sartori, Katia B Scapini, Oscar Albuquerque, Ivana Cinthya Moraes-Silva, Hélio José Coelho-Júnior, Bruno Rodrigues, Cristiano Teixeira Mostarda, Kátia De Angelis, Maria Cláudia Irigoyen
The present study aimed to compare the effects of moderate-intensity continuous and high-intensity interval exercise training (ET) on exercise tolerance, cardiac morphometry and function, hemodynamic, and cardiac autonomic modulation in myocardial infarcted mice. Wild-type mice (WT) were divided into four groups: sedentary WT (S); WT myocardium infarction sedentary (IS); WT myocardium infarction underwent to moderate-intensity continuous ET (MICT), and WT myocardium infarction underwent to high-intensity interval ET (MIIT)...
June 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28701523/lifelong-exercise-but-not-short-term-high-intensity-interval-training-increases-gdf11-a-marker-of-successful-aging-a%C3%A2-preliminary-investigation
#12
Bradley T Elliott, Peter Herbert, Nicholas Sculthorpe, Fergal M Grace, Daniel Stratton, Lawrence D Hayes
Lifelong exercise is associated with regulation of skeletal mass and function, reductions in frailty, and successful aging. Yet, the influence of exercise on myostatin and myostatin-interacting factors is relatively under examined in older males. Therefore, we investigated whether serum total myostatin, free myostatin, follistatin, and growth and differentiation factor 11 (GDF11) were altered following high-intensity interval training (HIIT) in a group of 13 lifelong sedentary (SED; 64 [6] years) and 11 lifelong exercising (LEX; 62 [6] years) older males...
July 2017: Physiological Reports
https://www.readbyqxmd.com/read/28700514/low-volume-high-intensity-interval-versus-continuous-endurance-training-effects-on-hematological-and-cardiorespiratory-system-adaptations-in-professional-canoe-polo-athletes
#13
Mohsen Sheykhlouvand, Mohammadali Gharaat, Erfan Khalili, Hamid Agha-Alinejad, Farhad Rahmaninia, Hamid Arazi
The aim of this study was to compare the effect of two paddling-based high-intensity interval training (HIIT) and continuous endurance training (CET) on hematological, immunological, and cardiorespiratory adaptations in professional canoe polo athletes. Twenty one male canoe polo athletes were randomly divided into one of three groups (N=7): 1) HIIT with variable intensity (VIHIIT) (6×60-second at 100,110,120,130,130, 130,120,110,100% vV[Combining Dot Above]O2peak from 1 to 9 session respectively, 1:3 work to recovery ratio); 2) HIIT with variable volume (VVHIIT) (6,7,8,9,9,9,8,7,6 repetitions/session from 1 to 9 session respectively)×60-second at lowest velocity that elicited V[Combining Dot Above]O2peak (vV[Combining Dot Above]O2peak), 1:3 work to recovery ratio); and 3) the CET group performed 3 times × 60 min paddling sessions (75% vV[Combining Dot Above]O2peak) per week for 3 weeks...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28691645/a-single-bout-of-high-intensity-interval-training-improves-motor-skill-retention-in-individuals-with-stroke
#14
Jean-Francois Nepveu, Alexander Thiel, Ada Tang, Joyce Fung, Jesper Lundbye-Jensen, Lara A Boyd, Marc Roig
BACKGROUND: One bout of high-intensity cardiovascular exercise performed immediately after practicing a motor skill promotes changes in the neuroplasticity of the motor cortex and facilitates motor learning in nondisabled individuals. OBJECTIVE: To determine if a bout of exercise performed at high intensity is sufficient to induce neuroplastic changes and improve motor skill retention in patients with chronic stroke. METHODS: Twenty-two patients with different levels of motor impairment were recruited...
July 1, 2017: Neurorehabilitation and Neural Repair
https://www.readbyqxmd.com/read/28684587/potential-involvement-of-lactate-and-interleukin-6-in-the-appetite-regulatory-hormonal-response-to-an-acute-exercise-bout
#15
Hashim Islam, Logan K Townsend, Greg L McKie, Philip J Medeiros, Brendon James Gurd, Tom J Hazell
High-intensity exercise suppresses appetite partly through changes in peripheral appetite-regulating hormones. Lactate and interleukin-6 (IL-6) mediate the release of these hormones in animal/cell models and may provide a mechanistic link between exercise intensity and appetite regulation. The current study examined changes in appetite-regulating hormones, lactate, and IL-6 after different intensities of running. Eight males completed four experimental sessions: 1) Moderate-intensity continuous training (MICT; 65% VO2max); 2) Vigorous-intensity continuous training (VICT; 85% VO2max); 3) Sprint interval training (SIT; repeated "all-out" sprints); 4) Control (CTRL; no exercise)...
July 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28682862/evidence-of-direct-cardiac-damage-following-high-intensity-exercise-in-chronic-energy-restriction-a-case-report-and-literature-review
#16
Marianne F Baird, Fergal Grace, Nicholas Sculthorpe, Scott M Graham, Audrey Fleming, Julien S Baker
RATIONALE: Following prolonged endurance events such as marathons, elevated levels of cardiospecific biomarkers are commonly reported. Although transiently raised levels are generally not considered to indicate clinical myocardial damage, comprehension of this phenomenon remains incomplete. The popularity of high-intensity interval training highlights a paucity of research measuring cardiac biomarker response to this type of exercise. This a posteriori case report discusses the elevation of cardiac troponins (cTn) associated with short interval, high-intensity exercise...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28682801/upping-the-ante-working-harder-to-address-physical-inactivity-in-older-adults
#17
Denise Taylor, Elizabeth Binns, Nada Signal
PURPOSE OF REVIEW: Physical inactivity in older adults is associated with declining functional capacity, sarcopenia, metabolic changes, and cognitive changes. Current Physical Activity Guidelines recommend 150 min of moderate-intensity exercise along with strengthening and balance exercises. Despite the guidelines there is little evidence of a population-based change in physical activity. RECENT FINDINGS: There is a growing body of research investigating the use of high-intensity interval training in older adult to improve health-related outcomes...
July 5, 2017: Current Opinion in Psychiatry
https://www.readbyqxmd.com/read/28681596/high-intensity-interval-training-combined-with-resistance-training-improves-physiological-capacities-strength-and-quality-of-life-in-multiple-sclerosis-patients-a-pilot-study
#18
Pierre Zaenker, Fabrice Favret, Evelyne Lonsdorfer, Guillaume Muff, Jérôme DE Seze, Marie-Eve Isner-Horobeti
BACKGROUND: Numerous studies have shown that mild-to-moderate intensity or resistance exercise training improves physical capacities such as, peak oxygen consumption, maximal tolerated power and strength in multiple sclerosis patients. However, few studies have evaluated the effects of high intensity interval training associated to with resistance training. Only few studies have analysed difference between men and women before and after combined training. Moreover, the evaluation of exercise between ambulatory multiple sclerosis patients without disability (EDSS 0- 3) and patients with disabilities (EDSS 3...
July 5, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28673573/exercise-for-type-1-diabetes-mellitus-management-general-considerations-and-new-directions
#19
Juliano Boufleur Farinha, Maurício Krause, Josianne Rodrigues-Krause, Alvaro Reischak-Oliveira
Type 1 diabetes mellitus (T1DM) is characterized by the loss of insulin secreting cells due to a directed autoimmune process, which is linked to oxidative stress and inflammation. Exercise training is known to induce several benefits by reducing inflammation and improving antioxidant defenses. In this context, exercise training may be considered as an efficient and relatively inexpensive non-pharmacological tool for diabetes treatment, added to the usual insulin administration. Unfortunately, most people with T1DM do not reach the recommended levels of physical activity due to concerns with hypoglycemic episodes...
July 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28671907/communication-training-adverse-events-and-quality-measures-2-retrospective-database-analyses-in-washington-state-hospitals
#20
Ian R Slade, Sara J Beck, C Bradley Kramer, Rebecca G Symons, Michael Cusumano, David R Flum, Thomas H Gallagher, Emily Beth Devine
OBJECTIVE: Washington State's HealthPact program was launched in 2011 as part of AHRQ's Patient Safety and Medical Liability Reform initiative. HealthPact delivered interdisciplinary communication training to health-care professionals with the goal of enhancing safety. We conducted 2 exploratory, retrospective database analyses to investigate training impact on the frequency of adverse events (AEs) and select quality measures across 3 time frames: pretraining (2009-2011), transition (2012), and posttraining (2013)...
June 30, 2017: Journal of Patient Safety
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