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https://www.readbyqxmd.com/read/28422851/relation-between-serum-myokines-and-phase-ii-cardiac-rehabilitation
#1
Der-Sheng Han, Ming-Yen Hsiao, Tyng-Guey Wang, Ssu-Yuan Chen, Wei-Shiung Yang
Patients with coronary heart disease or acute myocardial infarction after cardiac catheterization with stenting referred for phase II cardiac rehabilitation (CR) were grouped according to their preference. Cardio-pulmonary exercise testing (CPET) was used to determine oxygen uptake ((Equation is included in full-text article.)) at peak exercise and anaerobic threshold (AT). The control patients received counseling only while the experiment group received 36 sessions of CR in 3 to 6 months. Exercise physiology parameters and serum myokines (myostatin, insulin-like growth factor-1 (IGF-1), and interleukin-6 (IL-6) were measured pre- and postrehabilitation...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28415064/physical-demands-of-multimodal-training-competitions-and-their-relationship-to-measures-of-performance
#2
Andrew R Jagim, Owen Rader, Margaret T Jones, Jonathan M Oliver
Jagim, AR, Rader, O, Jones, MT, and Oliver, JM. Physical demands of multimodal training competitions and their relationship to measures of performance. J Strength Cond Res 31(5): 1212-1220, 2017-The purpose of this study was to identify the physical demands of multimodal training (MMT) competitions and to determine the extent of their relationship to select measures of performance. Eighteen (>1.5 years of strength training experience) men (n = 10) and women (n = 8) (mean ± SD; age: 37.8 ± 10.6 years, height: 172...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28409615/peritonsillar-abscess
#3
Nicholas J Galioto
Peritonsillar abscess is the most common deep infection of the head and neck, occurring primarily in young adults. Diagnosis is usually made on the basis of clinical presentation and examination. Symptoms and findings generally include fever, sore throat, dysphagia, trismus, and a "hot potato" voice. Drainage of the abscess, antibiotic therapy, and supportive therapy for maintaining hydration and pain control are the cornerstones of treatment. Most patients can be managed in the outpatient setting. Peritonsillar abscesses are polymicrobial infections, and antibiotics effective against group A streptococcus and oral anaerobes should be first-line therapy...
April 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28398947/acidosis-but-not-alkalosis-affects-anaerobic-metabolism-and-performance-in-a-4-km-time-trial
#4
Carlos Rafaell Correia-Oliveira, João Paulo Lopes-Silva, Romulo Bertuzzi, Glenn K McConell, David John Bishop, Adriano Eduardo Lima-Silva, Maria Augusta Peduti Dal'Molin Kiss
PURPOSE: To determine the effect of pre-exercise metabolic acidosis and alkalosis on power output (PO) and aerobic and anaerobic energy expenditure during a 4-km cycling time trial (TT). METHODS: Eleven recreationally trained cyclists (VO2peak 54.1 ± 9.3 mL·kg·min) performed a 4-km TT 100 min after ingesting in a double-blind matter 0.15 g·kg of body mass of ammonium chloride (NH4Cl, acidosis), 0.3 g·kg of sodium bicarbonate (NaHCO3, alkalosis) or 0.15 g·kg of CaCO3 (placebo)...
April 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28393541/racial-differences-in-hemoglobin-and-plasma-volume-variation-implications-for-muscle-performance-and-recovery
#5
Maha Sellami, Karim Chamari, Alessandro Moura Zagatto, Wiem Kebsi, Anis Chaouachi, Hassane Zouhal
OBJECTIVE: To examine the effect of race differences on sprint performance, Hemoglobin (Hb), Hematocrit (Ht) and plasma volume (PV) variation in response to repeated sprint exercise. DESIGN: Thirty-six healthy, moderately trained men and women (20.8 ± 0.2 year-old) volunteered to participate in this study. They were allocated to one of the four groups according to their gender and race: Black men's group (BM, n = 9), White men's group (WM, n = 9), Black women's group (BW, n = 9) and White women's group (WW, n = 9)...
April 10, 2017: Ethnicity & Health
https://www.readbyqxmd.com/read/28387575/nutritional-considerations-for-bouldering
#6
Edward J Smith, Ryan Storey, Mayur K Ranchordas
Bouldering competitions are held up to International level and governed by the International Federation of Sport Climbing. Bouldering has been selected to feature at the 2020 Olympic Games in Tokyo, however, physiological qualities and nutritional requirements to optimise performance remain inadequately defined due to large gaps in the literature. The primary goals of training include optimising the capacity of the anaerobic energy systems and developing sport-specific strength, with emphasis on the isometric function of the forearm flexors responsible for grip...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28387540/n-3-fatty-acid-supplementation-during-4-weeks-of-training-leads-to-improved-anaerobic-endurance-capacity-but-not-maximal-strength-speed-or-power-in-soccer-players
#7
Leyre Gravina, Frankie F Brown, Lee Alexander, James Dick, Gordon Bell, Oliver C Witard, Stuart D R Galloway
Omega-3 fatty acid (n-3 FA) supplementation could promote adaptation to soccer-specific training. We examined the impact of a 4 wk period of n-3 FA supplementation during training on adaptations in 1RM knee extensor strength, 20m sprint speed, vertical jump power, and anaerobic endurance capacity (Yo-Yo test) in competitive soccer players. Twenty six soccer players were randomly assigned to one of two groups: n-3 FA supplementation (n-3 FA; n=13) or placebo (n=13). Both groups performed two experimental trial days...
April 7, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28382813/oxygen-uptake-and-body-composition-after-aquatic-physical-training-in-women-with-fibromyalgia-a-randomized-controlled-trial
#8
Carolina P Andrade, Antonio R Zamunér, Meire Forti, Thalita F França, Nayara Y Tamburús, Ester Silva
BACKGROUND: Aquatic physical training (APT) has been strongly recommended to improve symptoms in fibromyalgia syndrome (FMS). However, its effects on body composition and whether lean body mass (LBM) directly influences the aerobic functional capacity of this population are still not clear. AIM: To investigate whether APT can help improve body composition and increase the aerobic functional capacity in women with FMS, and whether oxygen consumption (VO2) related to LBM can better quantify the functional capacity of this population...
April 4, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28361355/redox-status-alterations-during-the-competitive-season-in-%C3%A3-lite-soccer-players-focus-on-peripheral-leukocyte-derived-ros
#9
Matteo Becatti, Amanda Mannucci, Victoria Barygina, Gabriele Mascherini, Giacomo Emmi, Elena Silvestri, Daniel Wright, Niccolò Taddei, Giorgio Galanti, Claudia Fiorillo
It is well known that exercise training can deeply affect redox homeostasis by enhancing antioxidant defenses. However, exhaustive exercise can induce excessive reactive oxygen species (ROS) production, leading to oxidative stress-related tissue injury and impaired muscle contractility. Hence, ROS represent important signaling molecules whose level has to be maintained to preserve normal cellular function, but which can also accumulate in response to repetitive muscle contraction. In fact, low levels of oxidants have been suggested to be essential for muscle contraction...
March 30, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28344453/high-intensity-exercise-and-carbohydrate-supplementation-do-not-alter-plasma-visfatin
#10
Paul F Mellick, Bryan J Feger, Douglas J Oberlin, Paul G Davis, Laurie Wideman
The purpose of the study was to examine the effect of high-intensity exercise and carbohydrate supplementation (CHO) on plasma visfatin. On 2 separate days, 10 sprint-trained males (age = 26.4 ± 5.3 yr; Ht = 1.77 ± 0.03 m; Wt = 78.78 ± 9.10 kg; BF% = 13.96 ± 7.28%) completed 4, 3-min bouts of cycling at 50% mean anaerobic power, with 6 min of rest between bouts. On CHO day, subjects ingested 50g of CHO 30 min before exercise. On control day, subjects ingested a sugar-free drink (CON) 30 min before exercise...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28338361/method-induced-differences-of-energy-contributions-in-adolescent-female-kayaking
#11
Yongming Li, Margot Niessen, Xiaoping Chen, Ulrich Hartmann
Purpose Different relative aerobic energy contribution (WAER%) has been reported for the two female Olympic kayaking disciplines (i.e. 200 and 500m). The purpose of this study was to investigate whether the adopted method of energy calculation influenced the value of WAER% during the kayaking time trials. Methods Eleven adolescent female kayakers (age 14±1 yrs, height 172±4 cm, body mass 65.4±4.2 kg, VO2peak 42.6±4.9 ml·min(-1)·kg(-1), training experience 1.5±0.3 yrs) volunteered to participate in one incremental exercise test and two time trials (40s and 120s) on the kayak ergometer...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28315193/resistance-training-using-different-hypoxic-training-strategies-a-basis-for-hypertrophy-and-muscle-power-development
#12
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/28301436/the-effects-of-recovery-duration-during-high-intensity-interval-exercise-on-time-spent-at-high-rates-of-oxygen-consumption-oxygen-kinetics-and-blood-lactate
#13
Ilias Smilios, Aristides Myrkos, Andreas Zafeiridis, Argyris Toubekis, Apostolos Spassis, Savas P Tokmakidis
The recovery duration and the work to recovery ratio are important aspects to consider when designing a high-intensity aerobic interval exercise (HIIE). This study examined the effects of recovery duration on total exercise time performed above 80, 90 and 95% of maximum oxygen consumption (VO2max) and heart rate (HRmax) during a single-bout HIIE. We also evaluated the effects on VO2 and HR kinetics, blood lactate concentration and rating of perceived exertion (RPE). Eleven moderately trained males (22.1±1 yrs...
March 13, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28289526/aerobic-vs-anaerobic-exercise-training-effects-on-the-cardiovascular-system
#14
REVIEW
Harsh Patel, Hassan Alkhawam, Raef Madanieh, Niel Shah, Constantine E Kosmas, Timothy J Vittorio
Physical exercise is one of the most effective methods to help prevent cardiovascular (CV) disease and to promote CV health. Aerobic and anaerobic exercises are two types of exercise that differ based on the intensity, interval and types of muscle fibers incorporated. In this article, we aim to further elaborate on these two categories of physical exercise and to help decipher which provides the most effective means of promoting CV health.
February 26, 2017: World Journal of Cardiology
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
#15
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...
March 9, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28278174/exploring-the-performance-reserve-effect-of-different-magnitudes-of-power-output-deception-on-4-000-m-cycling-time-trial-performance
#16
Mark R Stone, Kevin Thomas, Michael Wilkinson, Emma Stevenson, Alan St Clair Gibson, Andrew M Jones, Kevin G Thompson
PURPOSE: The aim of the present study was to investigate whether a magnitude of deception of 5% in power output would lead to a greater reduction in the amount of time taken for participants to complete a 4000 m cycling TT than a magnitude of deception of 2% in power output, which we have previously shown can lead to a small change in 4000 m cycling TT performance. METHODS: Ten trained male cyclists completed four, 4000 m cycling TTs. The first served as a habituation and the second as a baseline for future trials...
2017: PloS One
https://www.readbyqxmd.com/read/28271312/chronic-effects-of-superimposed-electromyostimulation-during-cycling-on-aerobic-and-anaerobic-capacity
#17
Sebastian Mathes, Niklas Lehnen, Tobias Link, Wilhelm Bloch, Joachim Mester, Patrick Wahl
PURPOSE: To examine if chronic endurance training by means of simultaneously applied, superimposed electromyostimulation (EMS) can be used to improve performance and physiological core parameters compared to the traditional cycling. METHODS: Twenty-one male subjects (VO2peak 55.2 ± 5.1 ml min(- 1) kg(- 1)) were assigned to either a cycling (C) or cycling with superimposed EMS (C + E) group. Before and after the 4-week training period, including 14 sessions of moderate cycling [60 min at 60% peak power output (PPO)], participants performed a 20-min time-trial, a step test to exhaustion, a 30-s isokinetic sprint test, and maximum force- and power-tests...
May 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28262570/peripheral-muscle-abnormalities-in-cystic-fibrosis-etiology-clinical-implications-and-response-to-therapeutic-interventions
#18
Mathieu Gruet, Thierry Troosters, Samuel Verges
Peripheral muscle dysfunction is an important systemic consequence of cystic fibrosis (CF) with major clinical implications, such as exercise intolerance and reduced quality of life. Evidence is now accumulating that lack of physical activity is unlikely to be the sole explanation for peripheral muscle dysfunction of patients with CF. Particularly, the demonstration of CFTR expression in both murine and human skeletal muscle suggests the potential implication of intrinsic CF-related factors. By combining data from both human and animal models, this review describes CF peripheral muscle abnormalities and critically reviews the advances in understanding the impact of the underlying mechanisms...
March 2, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28258407/biodegradation-of-insensitive-munition-formulations-imx101-and-imx104-in-surface-soils
#19
Karl J Indest, Dawn E Hancock, Fiona H Crocker, Jed O Eberly, Carina M Jung, Gary A Blakeney, Jon Brame, Mark A Chappell
The biodegradation potential of insensitive munition melt cast formulations IMX101 and IMX104 was investigated in two unamended training range soils under aerobic and anaerobic growth conditions. Changes in community profiles in soil microcosms were monitored via high-throughput 16S rRNA sequencing over the course of the experiments to infer key microbial phylotypes that may be linked to IMX degradation. Complete anaerobic biotransformation occurred for IMX101 and IMX104 constituents 2,4-dinitroanisole (DNAN) and 3-nitro-1,2,4-triazol-5-one during the 30-day incubation period with Camp Shelby (CS) soil...
March 3, 2017: Journal of Industrial Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28253027/wingate-test-is-a-strong-predictor-of-1500m-performance-in-elite-speed-skaters
#20
Nico Hofman, Jac Orie, Marco J M Hoozemans, Carl Foster, Jos J de Koning
Wingate test scores are strongly associated with anaerobic capacity in athletes involved in speed-endurance sports. In speed skating Wingate results are known to predict performance cross-sectionally, but have not been investigated relative to their ability to predict performance longitudinally. PURPOSE: To investigate whether Wingate tests performed during summer training are predictive of 1500m speed skating performance the subsequent winter in elite speed skaters. METHODS: Wingate test results from the summer training periods and 1500m performances during the subsequent winter were analyzed over a 3-year period, in 5 female and 8 male elite (Olympic, World Championship and World Cup medalists) speed skaters...
March 2, 2017: International Journal of Sports Physiology and Performance
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