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https://www.readbyqxmd.com/read/29792554/effect-of-acetazolamide-and-methazolamide-on-diaphragm-and-dorsiflexor-fatigue-a-randomized-controlled-trial
#1
Paolo B Dominelli, Chris J McNeil, Tyler Dennis Vermeulen, Troy J R Stuckless, Courtney V Brown, Giulio S Dominelli, Erik Richard Swenson, Lucas J Teppema, Glen Edward Foster
Acetazolamide, a carbonic anhydrase (CA) inhibitor used clinically and to prevent acute mountain sickness, worsens skeletal muscle fatigue in animals and humans. In animals, methazolamide, a methylated analogue of acetazolamide and an equally potent CA inhibitor, reportedly exacerbates fatigue less than acetazolamide. Accordingly, we sought to determine, in humans, if methazolamide would attenuate diaphragm and dorsiflexor fatigue compared to acetazolamide. Healthy men (dorsiflexor: n=12; diaphragm: n=7) performed fatiguing exercise on three occasions, after ingesting acetazolamide (250 mg three times a day) and then in random order, methazolamide (100 mg twice a day) or placebo for 48 h...
May 24, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29790452/does-biological-sex-impact-intestinal-epithelial-injury-small-intestine-permeability-gastrointestinal-symptoms-and-systemic-cytokine-profile-in-response-to-exertional-heat-stress
#2
Rhiannon M J Snipe, Ricardo J S Costa
This study aimed to determine the influence of biological sex on intestinal injury, permeability, gastrointestinal symptoms, and systemic cytokine profile in response to exertional-heat stress. Male (n= 13) and eumenorrheic female (n= 11) endurance runners completed 2 h running at 60% V̇O2max in 35°C. Blood samples were collected pre- and post-exercise and during recovery to determine plasma intestinal fatty-acid binding protein (I-FABP) and systemic cytokine profile. Urinary lactulose:L-rhamnose ratio was used to determine small intestine permeability...
May 23, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29789415/acute-effects-of-different-types-of-resistance-training-on-cardiac-autonomic-modulation-in-copd
#3
Franciele M Vanderlei, Fernando Zandonadi, Fabiano Franciso de Lima, Bruna S A Silva, Ana Paula C F Freire, Dionei Ramos, Ercy Mara C Ramos
BACKGROUND: An exercise modality that has been gaining significant importance in the rehabilitation of subjects with COPD is resistance training. When considering that patients with COPD present alterations in autonomic cardiac modulation caused by the disease itself, it is necessary to investigate the behavior of the autonomic nervous system in relation to this type of exercise. Thus, the objective of this study was to compare the acute effects of resistance training with elastic tubes, elastic bands, and conventional weightlifitng on the behavior of cardiac autonomic modulation in post-exercise recovery in subjects with COPD...
May 22, 2018: Respiratory Care
https://www.readbyqxmd.com/read/29789267/the-effect-of-lower-limb-occlusion-on-recovery-following-sprint-exercise-in-academy-rugby-players
#4
N Williams, M Russell, C J Cook, L P Kilduff
OBJECTIVES: The effects of vascular occlusion on recovery of physiological and neuromuscular markers over 24h, and hormonal reactivity to subsequent exercise were investigated. DESIGN: Counterbalanced, randomised, crossover. METHODS: Academy rugby players (n=24) completed six 50-m sprints (5-min inter-set recovery) before occlusion cuff application (thighs) and intermittent inflation to 171-266mmHg (Recovery) or 15mmHg (Con) for 12-min (two sets, 3-min repetitions, 3-min non-occluded reperfusion)...
March 3, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29781942/effort-index-as-a-novel-variable-for-monitoring-the-level-of-effort-during-resistance-exercises
#5
David Rodríguez-Rosell, Juan M Yáñez-García, Julio Torres-Torrelo, Ricardo Mora-Custodio, Mário C Marques, Juan J González-Badillo
Rodríguez-Rosell, D, Yáñez-García, JM, Torres-Torrelo, J, Mora-Custodio, R, Marques, MC, and González-Badillo, JJ. Effort index as a novel variable for monitoring the level of effort during resistance exercises. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to analyze the acute mechanical and metabolic response to resistance exercise protocols (REPs) defined by 2 variables: the first repetition's mean velocity and the percentage of velocity loss (%VL) over the set. The product of these 2 variables was termed the effort index (EI) and was used as an indicator of the degree of fatigue induced during each REP...
May 11, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29780604/effect-of-long-term-high-altitude-exposure-on-cardiovascular-autonomic-adjustment-during-rest-and-post-exercise-recovery
#6
Prem Bhattarai, Bishnu H Paudel, Dilip Thakur, Balkrishna Bhattarai, Bijay Subedi, Rita Khadka
Background: Despite the successful adaptation to high altitude, some differences do occur due to long term exposure to the hypoxic environment. The effect of long term high altitude exposure on cardiac autonomic adjustment during basal and post-exercise recovery is less known. Thus we aimed to study the differences in basal cardiac autonomic adjustment and its response to exercise in highlanders and to compare it with lowlanders. Methods: The study was conducted on 29 healthy highlander males who were born and brought up at altitude of 3000 m and above from the sea level, their cardiac autonomic adjustment was compared with age, sex, physical activity and ethnicity-matched 29 healthy lowlanders using Heart Rate Variability (HRV) during rest and recovery from sub-maximal exercise (3 m step test)...
2018: Annals of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/29780062/effect-of-chlorella-ingestion-on-oxidative-stress-and-fatigue-symptoms-in-healthy-men
#7
Hirotaka Okada, Noriko Yoshida, Tatsuyuki Kakuma, Kouji Toyomasu
OBJECTIVE: We examined the effects of dietary chlorella ingestion on oxidative stress and fatigue symptoms in healthy men under resting and fatigue conditions. METHOD: We conducted a double-blind, parallel-arm controlled study. Twenty-seven healthy male volunteers (mean age, 35.4±10.4 years) were randomly divided into the chlorella and placebo groups, and received chlorella (6 g/day) and lactose as placebo (7.2 g/day), respectively, for 4 weeks. To simulate mild fatigue, subjects underwent exercise (40% of the heart rate reserve) for 30 minutes...
May 21, 2018: Kurume Medical Journal
https://www.readbyqxmd.com/read/29776562/the-pattern-of-a-broken-heart-can-circulating-mirs-help-to-distinguish-cardiac-pathologies-from-normal-post-exercise-recovery
#8
EDITORIAL
Martin Bahls, Nicolle Kränkel
No abstract text is available yet for this article.
August 1, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29775547/acute-dietary-nitrate-supplementation-does-not-attenuate-oxidative-stress-or-the-hemodynamic-response-during-submaximal-exercise-in-hypobaric-hypoxia
#9
Colin R Carriker, Paige Rombach, Brooke M Stevens, Roger A Vaughan, Ann L Gibson
PURPOSE: To investigate changes in oxidative stress, arterial oxygen saturation (SaO2), blood pressure (BP), and heart rate (HR) while exercising in hypobaric hypoxia following acute dietary nitrate supplementation. METHODS: Nine well-trained (60.8±7.8 ml/kg/min) males (29±7 years) visited the lab on 3 occasions, each separated by 1 week. Visit 1 included a maximal aerobic cycling test (VO2max) and 5 five-minute increasing intensity exercise bouts in a normobaric environment (1600m)...
May 18, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29772567/the-renin-angiotensin-system-not-the-kinin-kallikrein-system-affects-post-exercise-proteinuria
#10
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/29772291/watching-television-or-listening-to-music-while-exercising-failed-to-affect-post-exercise-food-intake-or-energy-expenditure-in-male-adolescents
#11
Holly Livock, Joel D Barnes, Catherine Pouliot, Allana G LeBlanc, Travis J Saunders, Mark S Tremblay, Denis Prud'homme, Jean-Philippe Chaput
Watching television or listening to music while exercising can serve as motivating factors, making it more pleasant to exercise for some people. However, it is unknown whether these stimuli influence food intake and/or physical activity energy expenditure (PAEE) for the remainder of the day, potentially impacting energy balance and weight control. We examined the effects of watching television or listening to music while exercising on post-exercise energy intake and expenditure. Our study was a randomized crossover design, in which 24 male adolescents (mean age: 14...
May 14, 2018: Appetite
https://www.readbyqxmd.com/read/29771824/psychological-and-behavioral-responses-to-interval-and-continuous-exercise
#12
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
https://www.readbyqxmd.com/read/29770871/the-effects-of-acute-leucine-or-leucine-glutamine-co-ingestion-on-recovery-from-eccentrically-biased-exercise
#13
Mark Waldron, Cameron Ralph, Owen Jeffries, Jamie Tallent, Nicola Theis, Stephen David Patterson
This study investigated the effects of leucine or leucine + glutamine supplementation on recovery from eccentric exercise. In a double-blind independent groups design, 23 men were randomly assigned to a leucine (0.087 g/kg; n = 8), leucine + glutamine (0.087 g/kg + glutamine 0.3 g/kg; n = 8) or placebo (0.3 g/kg maltodextrin; n = 7) group. Participants performed 5 sets of drop jumps, with each set comprising 20 repetitions. Isometric knee-extensor strength, counter-movement jump (CMJ) height, delayed-onset muscle soreness (DOMS) and creatine kinase (CK) were measured at baseline, 1, 24, 48 h and 72 h post-exercise...
May 16, 2018: Amino Acids
https://www.readbyqxmd.com/read/29769521/thirty-loci-identified-for-heart-rate-response-to-exercise-and-recovery-implicate-autonomic-nervous-system
#14
Julia Ramírez, Stefan van Duijvenboden, Ioanna Ntalla, Borbala Mifsud, Helen R Warren, Evan Tzanis, Michele Orini, Andrew Tinker, Pier D Lambiase, Patricia B Munroe
Impaired capacity to increase heart rate (HR) during exercise (ΔHRex ), and a reduced rate of recovery post-exercise (ΔHRrec ) are associated with higher cardiovascular mortality rates. Currently, the genetic basis of both phenotypes remains to be elucidated. We conduct genome-wide association studies (GWASs) for ΔHRex and ΔHRrec in ~40,000 individuals, followed by replication in ~27,000 independent samples, all from UK Biobank. Six and seven single-nucleotide polymorphisms for ΔHRex and ΔHRrec , respectively, formally replicate...
May 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29761414/spatially-resolved-kinetics-of-skeletal-muscle-exercise-response-and-recovery-with-multiple-echo-diffusion-tensor-imaging-mediti-a-feasibility-study
#15
E E Sigmund, S H Baete, K Patel, D Wang, D Stoffel, R Otazo, P Parasoglou, J Bencardino
OBJECTIVES: We describe measurement of skeletal muscle kinetics with multiple echo diffusion tensor imaging (MEDITI). This approach allows characterization of the microstructural dynamics in healthy and pathologic muscle. MATERIALS AND METHODS: In a Siemens 3-T Skyra scanner, MEDITI was used to collect dynamic DTI with a combination of rapid diffusion encoding, radial imaging, and compressed sensing reconstruction in a multi-compartment agarose gel rotation phantom and within in vivo calf muscle...
May 14, 2018: Magma
https://www.readbyqxmd.com/read/29757056/whey-protein-augments-leucinemia-and-post-exercise-p70s6k1-activity-compared-to-a-hydrolysed-collagen-blend-when-in-recovery-from-training-with-low-carbohydrate-availability
#16
Samuel G Impey, Kelly M Hammond, Robert Naughton, Carl Langan-Evans, Sam O Shepherd, Adam P Sharples, Jessica Cegielski, Kenneth Smith, Stewart Jeromson, D Lee Hamilton, Graeme L Close, James P Morton
We examined the effects of whey versus collagen protein on skeletal muscle cell signalling responses associated with mitochondrial biogenesis and protein synthesis in recovery from an acute training session completed with low carbohydrate (CHO) availability. In a repeated measures design (after adhering to a 36-h exercise-dietary intervention to standardise pre-exercise muscle glycogen), eight males completed a 75-min non-exhaustive cycling protocol and consumed 22 g of a hydrolysed collagen blend (COLLAGEN) or whey (WHEY) protein 45 min prior to exercise, 22 g during exercise and 22 g immediately post-exercise...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29757055/urine-specific-gravity-as-a-practical-marker-for-identifying-sub-optimal-fluid-intake-of-runners-12-h-post-exercise
#17
Eric Kyle O'Neal, Samantha Louise Johnson, Brett Alan Davis, Veronika Pribyslavska, Mary Caitlin Stevenson-Wilcoxson
The legitimacy of urine specific gravity (USG) as a standalone measure to detect hydration status has recently been challenged. As an alternative to hydration status, the purpose of this study was to determine the diagnostic capability of using the traditional USG marker of >1.020 to detect insufficient recovery fluid consumption with consideration for moderate versus high sweat losses (2.00-2.99 or > 3% body mass respectively). Adequate recovery fluid intake (ARFI) was operationally defined as ≥100% beverage fluid intake plus food water from 1 or 2 meals and a snack...
May 14, 2018: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29755363/an-evidence-based-approach-for-choosing-post-exercise-recovery-techniques-to-reduce-markers-of-muscle-damage-soreness-fatigue-and-inflammation-a-systematic-review-with-meta-analysis
#18
Olivier Dupuy, Wafa Douzi, Dimitri Theurot, Laurent Bosquet, Benoit Dugué
Introduction: The aim of the present work was to perform a meta-analysis evaluating the impact of recovery techniques on delayed onset muscle soreness (DOMS), perceived fatigue, muscle damage, and inflammatory markers after physical exercise. Method: Three databases including PubMed, Embase , and Web-of-Science were searched using the following terms: ("recovery" or "active recovery" or "cooling" or "massage" or "compression garment" or "electrostimulation" or "stretching" or "immersion" or "cryotherapy") and ("DOMS" or "perceived fatigue" or "CK" or "CRP" or "IL-6") and ("after exercise" or "post-exercise") for randomized controlled trials, crossover trials, and repeated-measure studies...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29748721/impact-of-acute-dynamic-exercise-on-radial-artery-low-flow-mediated-constriction-in-humans
#19
Robert O Elliott, Sultan Alsalahi, James P Fisher
PURPOSE: A "low-flow mediated constriction" (L-FMC) is evoked in the radial artery by the inflation of an ipsilateral wrist cuff to a supra-systolic pressure. We sought to test the hypothesis that the radial artery L-FMC response is augmented immediately following acute dynamic leg exercise in young healthy individuals. METHODS: Ten healthy and recreationally active men (23 ± 4 years) undertook a 30-min trial of incremental dynamic leg cycling exercise (10 min at 50, 100 and 150 W) and a 30-min time control trial (seated rest)...
May 10, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29748720/aerobic-fitness-alters-the-capacity-of-mononuclear-cells-to-produce-pentraxin-3-following-maximal-exercise
#20
Aaron L Slusher, Tiffany M Zúñiga, Edmund O Acevedo
PURPOSE: Pentraxin 3 (PTX3) is a vital regulator of innate immune function. Although plasma PTX3 concentrations are elevated with aerobic fitness, the cellular functions of PTX3 remain unknown in aerobically trained and untrained subjects. METHODS: Thirty individuals (aerobically trained = 15 and untrained = 15) participated in a maximal exercise protocol to examine ex vivo PTX3 production from isolated peripheral blood mononuclear cells (PBMCs) exposed to LPS or palmitate...
May 10, 2018: European Journal of Applied Physiology
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