keyword
MENU ▼
Read by QxMD icon Read
search

Hypoxic training

keyword
https://www.readbyqxmd.com/read/28523996/micro-rnas-exercise-and-cellular-plasticity-in-humans-the-impact-of-dietary-factors-and-hypoxia
#1
Timothée Watier, Anthony Mj Sanchez
Physical exercise is a stress that modulates a plethora of cellular mechanisms to promote morphological and metabolic adaptations. Substantial efforts have been made to better understand the modulation of pathways involved in cell plasticity during exercise, but human explorations may be limited because invasive procedures are often required. In recent years, minimally invasive methods for the analysis of microRNAs (miRNAs) modulation in response to exercise have been developed. miRNAs are small molecules that belong to a family of non-coding RNAs...
May 19, 2017: MicroRNA
https://www.readbyqxmd.com/read/28486858/ante-and-intrapartum-risk-factors-for-neonatal-hypoxic-ischemic-encephalopathy
#2
Cecilia Lundgren, Lars Brudin, Anna-Stina Wanby, Marie Blomberg
PURPOSE: To identify obstetrical risk factors for the diagnosis of neonatal hypoxic ischemic encephalopathy (HIE). A secondary aim was to determine the incidence of HIE. MATERIALS AND METHODS: A retrospective cohort study including 36,086 women with singleton term pregnancies giving live births in Sweden between 2009 and 2013. Cases of HIE were identified from three different sources. Risk factors for HIE were evaluated using univariate and multivariate analyses...
May 9, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28451905/effects-of-altitude-hypoxia-on-single-and-multiple-sprint-performance-a-comprehensive-review
#3
REVIEW
Olivier Girard, Franck Brocherie, Grégoire P Millet
Many sport competitions, typically involving the completion of single- (e.g. track-and-field or track cycling events) and multiple-sprint exercises (e.g. team and racquet sports, cycling races), are staged at terrestrial altitudes ranging from 1000 to 2500 m. Our aim was to comprehensively review the current knowledge on the responses to either acute or chronic altitude exposure relevant to single and multiple sprints. Performance of a single sprint is generally not negatively affected by acute exposure to simulated altitude (i...
April 27, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28445224/impact-of-6-consecutive-days-of-sprint-training-in-hypoxia-on-performance-in-competitive-sprint-runners
#4
Nobukazu Kasai, Sahiro Mizuno, Sayuri Ishimoto, Etsuko Sakamoto, Misato Maruta, Toshiyuki Kurihara, Yuko Kurosawa, Kazushige Goto
The purpose of the present study was to determine the effects of 6 successive days of repeated sprint training in moderate hypoxia on anaerobic capacity in 100-200-m sprint runners. Eighteen male sprint runners (age, 20.0 ± 0.3 years; height, 175.9 ± 1.1 cm; body mass, 65.0 ± 1.2 kg) performed repeated cycling sprints for 6 consecutive days in either normoxic (NOR; fraction of inspired oxygen [FiO2], 20.9%; n = 9) or hypoxic conditions (HYPO; FiO2, 14.5%; n = 9). The repeated sprint ability (10 × 6-s sprints), 30-s maximal sprint ability, maximal oxygen uptake (VO2max), and 60-m running time on the track were measured before and after the training period...
April 18, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28445110/normobaric-hypoxia-increases-the-growth-hormone-response-to-maximal-resistance-exercise-in-trained-men
#5
Dean Filopoulos, Stuart J Cormack, Douglas G Whyte
This study examined the effect of hypoxia on growth hormone (GH) release during an acute bout of high-intensity, low-volume resistance exercise. Using a single-blinded, randomised crossover design, 16 resistance-trained males completed two resistance exercise sessions in normobaric hypoxia (HYP; inspiratory oxygen fraction, (FiO2) 0.12, arterial oxygen saturation (SpO2) 82 ± 2%) and normoxia (NOR; FiO2 0.21, SpO2 98 ± 0%). Each session consisted of five sets of three repetitions of 45° leg press and bench press at 85% of one repetition maximum...
April 26, 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28386234/high-intensity-interval-training-in-normobaric-hypoxia-improves-cardiorespiratory-fitness-in-overweight-chinese-young-women
#6
Zhaowei Kong, Qingde Shi, Jinlei Nie, Tomas K Tong, Lili Song, Longyan Yi, Yang Hu
Previous studies have investigated the effects of high-intensity interval training (HIIT) on cardiorespiratory fitness and body composition in overweight populations. However, the additive effect of HIIT and hypoxia on health parameters is not clear. This study compared the effects of HIIT under hypoxic conditions on cardiometabolic function with that under normoxia in overweight Chinese young women. Methods: A double-blind randomized controlled experimental design was applied. Twenty-four sedentary overweight Chinese young women (weight: 68...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28368957/impact-of-endurance-exercise-in-hypoxia-on-muscle-damage-inflammatory-and-performance-responses
#7
Daichi Sumi, Chihiro Kojima, Kazushige Goto
This study evaluated muscle damage and inflammatory and performance responses following high-intensity endurance exercise in moderate hypoxia among endurance athletes. Nine trained endurance athletes completed two different trials on different days: exercise under moderate hypoxia (H trial, FiO2 = 14.5%) and normoxia (N trial, FiO2 = 20.9%). They performed interval exercises (10 × 3-min running at 95% of VO2max with 60-s of active rest at 60% of VO2max) followed by 30-min of continuous running at 85% of VO2max under either hypoxic or normoxic conditions...
March 25, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28361408/correction-of-abnormalities-provoked-by-long-term-alcoholization-with-hypoxic-hyperoxic-training
#8
T G Sazontova, N V Stryapko, Yu V Arkhipenko
Free radical oxidation in the liver and skeletal muscles as well as stress behavior were examined in rats subjected to a gradual long-term alcoholization with elevated ethanol content from 10 to 40% followed by correction of alcohol-induced disturbances with hypoxic-hyperoxic training. The elevated plus-maze test revealed increased anxiety and appearance of risky behavior in alcoholized rats in the absence of changes in motor and orientation activity. In the liver and skeletal muscles of alcoholized rats, free radical oxidation processes were decompensated despite activation of antioxidant enzymes...
March 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28351441/-oxygen-therapy-not-required-for-all-copd-patients
#9
L E G W Vanfleteren
Long-term oxygen therapy in patients with pronounced hypoxia is an important and life-extending therapy. Many patients have only mild hypoxia, do not experience nocturnal desaturation, or experience desaturation only during exercise. While often applied in clinical practice, the clinical relevance of oxygen therapy was not clear in these patients. A recent randomized controlled trial has now revealed no additional value for long-term oxygen therapy in subjects with mild oxygen desaturation or exercise-induced oxygen desaturation only...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28315193/resistance-training-using-different-hypoxic-training-strategies-a-basis-for-hypertrophy-and-muscle-power-development
#10
REVIEW
Belén Feriche, Amador García-Ramos, Antonio J Morales-Artacho, Paulino Padial
The possible muscular strength, hypertrophy, and muscle power benefits of resistance training under environmental conditions of hypoxia are currently being investigated.Nowadays, resistance training in hypoxia constitutes a promising new training strategy for strength and muscle gains. The main mechanisms responsible for these effects seem to be related to increased metabolite accumulation due to hypoxia. However, no data are reported in the literature to describe and compare the efficacy of the different hypertrophic resistance training strategies in hypoxia...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28280973/determinants-of-curvature-constant-w-of-the-power-duration-relationship-under-normoxia-and-hypoxia-the-effect-of-pre-exercise-alkalosis
#11
Sanjoy K Deb, Lewis A Gough, S Andy Sparks, Lars R McNaughton
PURPOSE: This study investigated the effect of induced alkalosis on the curvature constant (W') of the power-duration relationship under normoxic and hypoxic conditions. METHODS: Eleven trained cyclists (mean ± SD) Age: 32 ± 7.2 years; body mass (bm): 77.0 ± 9.2 kg; VO2peak: 59.2 ± 6.8 ml·kg(-1)·min(-1) completed seven laboratory visits which involved the determination of individual time to peak alkalosis following sodium bicarbonate (NaHCO3) ingestion, an environment specific ramp test (e...
May 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28278461/automatic-quantification-of-tumour-hypoxia-from-multi-modal-microscopy-images-using-weakly-supervised-learning-methods
#12
Gustavo Carneiro, Tingying Peng, Christine Bayer, Nassir Navab
In recently published clinical trial results, hypoxia-modified therapies have shown to provide more positive outcomes to cancer patients, compared with standard cancer treatments. The development and validation of these hypoxia-modified therapies depend on an effective way of measuring tumour hypoxia, but a standardised measurement is currently unavailable in clinical practice. Different types of manual measurements have been proposed in clinical research, but in this paper we focus on a recently published approach that quantifies the number and proportion of hypoxic regions using high resolution (immuno- ) fluorescence (IF) and hematoxylin and eosin (HE) stained images of a histological specimen of a tumour...
March 2, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28278387/12-days-of-altitude-exposure-at-1800m-does-not-increase-resting-metabolic-rate-in-elite-rowers
#13
Amy L Woods, Laura A Garvican-Lewis, Anthony Rice, Kevin Grant Thompson
Four elite rowers completed a twelve-day altitude training camp living at 1800m, and training at 1800m and 915m, to assess changes in resting metabolic rate (RMR). RMR and body composition were assessed PRE and POST-camp. Downward trends in RMR and body composition were observed post-altitude: absolute RMR (percent change: -5.2%), relative RMR (-4.6%), body mass (-1.2%), and fat mass (-4.1%), likely related to the hypoxic stimulus and an imbalance between training load and energy intake.
March 9, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28277432/physiological-factors-associated-with-declining-repeated-sprint-performance-in-hypoxia
#14
Hannes Gatterer, Verena Menz, Christian Untersteiner, Kultida Klarod, Martin Burtscher
Performance loss in hypoxia might not only be caused by reduced oxygen availability, but might also be influenced by other factors, as for example oxidative stress, perceived exertion or breathing patterns. This study aimed to investigate the influence of these factors on running performance during hypoxic and normoxic shuttle-run sprinting. Eight male amateur soccer players performed shuttle-run sprints in hypoxia (FiO2∼14.8%) and normoxia (random order). Each session comprised 3-sets of 5x10s back and forth sprints (4...
March 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28273332/comparison-between-model-predicted-tumor-oxygenation-dynamics-and-vascular-flow-related-doppler-indices
#15
Antonella Belfatto, Ailyn M Vidal Urbinati, Delia Ciardo, Dorella Franchi, Federica Cattani, Roberta Lazzari, Barbara A Jereczek-Fossa, Roberto Orecchia, Guido Baroni, Pietro Cerveri
PURPOSE: Mathematical modeling is a powerful and flexible method to investigate complex phenomena. It discloses the possibility of reproducing expensive as well as invasive experiments in a safe environment with limited costs. This makes it suitable to mimic tumor evolution and response to radiotherapy although the reliability of the results remains an issue. Complexity reduction is therefore a critical aspect in order to be able to compare model outcomes to clinical data. Among the factors affecting treatment efficacy, tumor oxygenation is known to play a key role in radiotherapy response...
March 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28270770/maximal-oxygen-uptake-is-achieved-in-hypoxia-but-not-normoxia-during-an-exhaustive-severe-intensity-run
#16
Matthew I Black, Christopher R Potter, Jo Corbett, Cain C T Clark, Stephen B Draper
Highly aerobically trained individuals are unable to achieve maximal oxygen uptake ([Formula: see text]) during exhaustive running lasting ~2 min, instead [Formula: see text] plateaus below [Formula: see text] after ~1 min. Hypoxia offers the opportunity to study the ([Formula: see text]) response to an exhaustive run relative to a hypoxia induced reduction in [Formula: see text]. The aim of this study was to explore whether there is a difference in the percentage of [Formula: see text] achieved (during a 2 min exhaustive run) in normoxia and hypoxia...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28260202/biochemical-responses-and-physical-performance-during-high-intensity-resistance-circuit-training-in-hypoxia-and-normoxia
#17
Domingo J Ramos-Campo, Jacobo A Rubio-Arias, Stéphane Dufour, Linda Chung, Vicente Ávila-Gandía, Pedro E Alcaraz
PURPOSE: The aim of this study was to analyze the effect of hypoxia on metabolic and acid-base balance, blood oxygenation, electrolyte, and half-squat performance variables during high-resistance circuit (HRC) training. METHODS: Twelve resistance-trained subjects participated in this study. After a 6RM testing session, participants performed three randomized trials of HRC: normoxia (NORM: FiO2 = 0.21), moderate hypoxia (MH: FiO2 = 0.16), or high hypoxia (HH: FiO2 = 0...
March 4, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28248531/baseline-values-of-cardiovascular-and-respiratory-parameters-predict-response-to-acute-hypoxia-in-young-healthy-men
#18
V N Melnikov, S G Krivoschekov, V E Divert, T G Komlyagina, N S Consedine
The majority of the available works have studied distinct hypoxic responses of respiratory and cardiovascular systems. This study examines how these systems interact while responding to hypoxia and whether baseline metrics moderate reactions to a hypoxic challenge. Central hemodynamic, aortic wave reflection, and gas exchange parameters were measured in 27 trained young men before and after 10-min normobaric isocapnic hypoxia (10 % O2). Associations were assessed by correlation and multiple regression analyses...
February 28, 2017: Physiological Research
https://www.readbyqxmd.com/read/28223938/hypoxic-repeat-sprint-training-improves-rugby-player-s-repeated-sprint-but-not-endurance-performance
#19
Michael J Hamlin, Peter D Olsen, Helen C Marshall, Catherine A Lizamore, Catherine A Elliot
This study aims to investigate the performance changes in 19 well-trained male rugby players after repeat-sprint training (six sessions of four sets of 5 × 5 s sprints with 25 s and 5 min of active recovery between reps and sets, respectively) in either normobaric hypoxia (HYP; n = 9; FIO2 = 14.5%) or normobaric normoxia (NORM; n = 10; FIO2 = 20.9%). Three weeks after the intervention, 2 additional repeat-sprint training sessions in hypoxia (FIO2 = 14.5%) was investigated in both groups to gauge the efficacy of using "top-up" sessions for previously hypoxic-trained subjects and whether a small hypoxic dose would be beneficial for the previously normoxic-trained group...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28209739/myocardial-ischemic-tolerance-in-rats-subjected-to-endurance-exercise-training-during-adaptation-to-chronic-hypoxia
#20
Petra Alánová, Anna Chytilová, Jan Neckář, Jaroslav Hrdlička, Petra Míčová, Kristýna Holzerová, Markéta Hlaváčková, Kristýna Macháčková, František Papoušek, Jana Vašinová, Daniel Benák, Olga Nováková, František Kolář
Chronic hypoxia and exercise are natural stimuli that confer sustainable cardioprotection against ischemia/reperfusion (I/R) injury but it is unknown whether they can act in synergy to enhance ischemic resistance. Inflammatory response mediated by tumor necrosis factor-α (TNF-α) plays a role in the infarct size-limitation by continuous normobaric hypoxia (CNH) whereas exercise is associated with anti-inflammatory effects. This study was conducted to determine whether exercise training performed under conditions of CNH (12% O2) affects myocardial ischemic resistance with respect to inflammatory and redox status...
February 16, 2017: Journal of Applied Physiology
keyword
keyword
35788
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"