keyword
MENU ▼
Read by QxMD icon Read
search

Peak performance

keyword
https://www.readbyqxmd.com/read/29141071/usefulness-of-total-12-lead-qrs-voltage-as-a-clue-to-diagnosis-of-patients-with-cardiac-sarcoidosis-severe-enough-to-warrant-orthotopic-heart-transplant
#1
William C Roberts, Tiffany M Becker, Shelley A Hall
Importance: Severe heart failure caused by cardiac sarcoidosis is difficult to diagnosis without biopsy. Objective: To assess whether total electrocardiographic 12-lead QRS voltage may be a clue to diagnosis. Design, Setting, Participants: Case-series study with cases collected at Baylor University Medical Center at Dallas, Dallas, Texas, from January 13, 2005, to January 24, 2017. The clinical records of 16 patients with severe heart failure caused by cardiac sarcoidosis were studied...
November 15, 2017: JAMA Cardiology
https://www.readbyqxmd.com/read/29140913/sex-differences-in-aerobic-fitness-in-top-class-soccer-referees
#2
Carlo Castagna, Mario Bizzini, Stefano DʼOttavio, Susana C Araújo Póvoas
Castagna, C, Bizzini, M, D'Ottavio, S, and Araújo Póvoas, SC. Gender differences in aerobic fitness in top-class soccer referees. J Strength Cond Res XX(X): 000-000, 2017-The aim of this study was to assess the aerobic-fitness differences between male and female top-class soccer field referees (FRs). This with the purpose to provide cutoff values useful for training prescription in female FRs. Forty female top-class FRs (age 34.18 ± 3.50 years and 5 ± 3.9 years international refereeing experience) and 52 male FRs (age 38...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140909/the-effects-of-load-on-peak-power-output-fatigue-during-the-bench-throw
#3
David Boffey, Bulent Sokmen, Kurt Sollanek, Wanda Boda, Steven Winter
The ability to create power is an important variable for athletic success. No study to date has compared peak power output (PPO) fatigue across multiple sets and with different loads with the bench throw. This study aimed to begin the process of establishing empirical upper body power training guidelines for moderately strong athletes by determining how load (30%, 45%, 60% 1RM) affects PPO (Watts) dropoff during 3 sets of 10 repetitions of the bench throw. 10 resistance-trained male volunteers ((mean ± SD): age 20...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29140709/tuning-anatase-surface-reactivity-towards-carboxylic-acid-anchor-groups
#4
Mariana Cecilio de Oliveira Monteiro, Patrik Schmuki, Manuela Sonja Killian
The effect of different post-treatments on TiO2 anatase surface reactivity was investigated, in order to obtain the best techniques for enhancing anatase performance in diverse applications, e.g. in photocatalysis and especially as photoelectrodes for dye-sensitized solar cells (DSSCs). Different post-treatments of compact anodic anatase TiO2 were compared, including O2 plasma, UV irradiation, immersion in H2O2, vapor thermal treatment and post-anodization, evaluating the increase of the amount of OH reactive groups on the surface and removal of surface contamination...
November 15, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29140169/relationship-between-physical-therapy-characteristics-surgical-procedure-and-clinical-outcomes-in-patients-after-acl-reconstruction
#5
Ian J Dempsey, Grant E Norte, Matthew Hall, John Goetschius, Lindsay V Slater, Jourdan M Cancienne, Brian C Werner, David R Diduch, Joseph M Hart
CONTEXT: Post-operative rehabilitation is critical to optimize outcomes after anterior cruciate ligament reconstruction (ACLR). However, the relationship between physical therapy (PT) and clinical outcomes is unclear. OBJECTIVE: To describe PT characteristics following ACLR, and assess the relationships between PT characteristics, surgical procedure, and clinical outcomes. DESIGN: Cross-sectional. SETTING: Laboratory...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29140159/athletes-rated-as-poor-single-leg-squat-performers-display-measureable-differences-in-single-leg-squat-biomechanics-compared-to-good-performers
#6
Lachlan E Garrick, Bryce C Alexander, Anthony G Schache, Marcus G Pandy, Kay M Crossley, Natalie J Collins
CONTEXT: It is important to validate single-leg squat visual rating criteria used in clinical practice and research. Foot orthoses may improve single-leg squat performance in those who demonstrate biomechanics associated with increased risk of lower-limb injury. OBJECTIVE: Validate visual rating criteria proposed by Crossley et al, by determining whether athletes rated as poor single-leg squat performers display different single-leg squat biomechanics than good performers; and evaluate immediate effects of foot orthoses on single-leg squat biomechanics in poor performers...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29140157/case-study-body-composition-periodization-in-an-olympic-level-female-middle-distance-runner-over-a-9-year-career
#7
Trent Stellingwerff
This case-study features an Olympic-level female middle-distance runner implementing a science-based approach to body composition periodization. Data is emerging to suggest that it is not sustainable from a health and/or performance perspective to be at peak body composition year-round, so body composition needs to be strategically periodized. Anthropometric (n=44), hematological, other health measures and 1500m race performances (n=83) were periodically assessed throughout a 9-year career. General preparation phase (September to April) featured the athlete at ~2 to 4% over ideal competition phase body weight (BW) and body fat (%) with optimal energy availability being prioritized...
November 15, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29140148/the-reliability-of-individualized-load-velocity-profiles
#8
Harry G Banyard, K Nosaka, Alex D Vernon, G Gregory Haff
PURPOSE: This study examined the reliability of peak velocity (PV), mean propulsive velocity (MPV), and mean velocity (MV) in the development of load-velocity profiles (LVP) in the full depth free-weight back squat performed with maximal concentric effort. METHODS: Eighteen resistance-trained men performed a baseline one-repetition maximum (1RM) back squat trial and three subsequent 1RM trials used for reliability analyses, with 48-hours interval between trials...
November 15, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29139298/sic-nanofiber-mat-a-broadband-microwave-absorber-and-the-alignment-effect
#9
Yi Hou, Laifei Cheng, Yani Zhang, Yong Yang, Chaoran Deng, Zhihong Yang, Qi Chen, Xiaoqing Du, Lianxi Zheng
Fiber alignment is a key factor that determines the physical properties of nanofiber mats. In this work, SiC nanofiber mats with or without fiber alignment are fabricated via electrospinning and the microwave electromagnetic (EM) properties of their silicone resin composites (5wt.%) are investigated in 2-18 GHz. By comparing with the composite containing smashed nanofiber, it is found that the nanofiber mats show superior dielectric loss and a minimal reflection loss (RL) of around -49 dB at 8.6 GHz and 4.3 mm thickness, associated with a broad effective absorption (<-10 dB) bandwidth (EAB) of about 7...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29139285/subradiant-dipolar-interactions-in-plasmonic-nanoring-resonator-array-for-integrated-label-free-biosensing
#10
Yuzhang Liang, Hui Zhang, Wenqi Zhu, Amit Agrawal, Henri J Lezec, Lixia Li, Wei Peng, Yi Zou, Yan-Qing Lu, Ting Xu
With the development of advanced nanofabrication technologies over the last decade, plasmonic nanostructures have attracted wide attention for their potential in label-free biosensing applications. However, the sensing performance of nanostructured plasmonic sensors is primarily limited by the broad-linewidth features with low peak-to-dip signal ratio in the extinction spectra that result from strong radiative damping. Here, we propose and systematically investigate the in-plane and out-of-plane dipolar interactions in an array of plasmonic nanoring resonators that are from the spatial combination of classic nanohole and nanodisk structures...
November 15, 2017: ACS Sensors
https://www.readbyqxmd.com/read/29138757/effects-of-marathon-running-on-aerobic-fitness-and-performance-in-recreational-runners-one-week-after-a-race
#11
Fuminori Takayama, Atsushi Aoyagi, Wataru Shimazu, Yoshiharu Nabekura
It is not clear whether or not recreational runners can recover aerobic fitness and performance within one week after marathon running. This study aimed to investigate the effects of running a marathon race on aerobic fitness and performance one week later. Eleven recreational runners (six men, five women) completed the race in 3 h 36 min 20 s ± 41 min 34 s (mean ± standard deviation). Before and 7 days after the race, they performed a treadmill running test. Perceived muscle soreness was assessed before the race and for the following 7 days...
2017: Journal of Sports Medicine (Hindawi Publishing Corporation)
https://www.readbyqxmd.com/read/29138385/parameters-for-contrast-enhanced-ultrasound-ceus-of-enlarged-superficial-lymph-nodes-for-the-evaluation-of-therapeutic-response-in-lymphoma-a-preliminary-study
#12
Lei Xin, Zhimei Yan, Xiaojuan Zhang, Yichen Zang, Zhaoyan Ding, Hongwei Xue, Cheng Zhao
BACKGROUND The aims of this preliminary study were to evaluate contrast-enhanced ultrasound (CEUS) imaging and the therapeutic response of enlarged superficial lymph nodes in patients with lymphoma before and after chemotherapy and to determine the most useful CEUS response parameters. MATERIAL AND METHODS Forty-three patients with lymphoma, with 43 enlarged superficial lymph nodes, underwent CEUS and conventional ultrasound (US), before treatment and after the first three cycles of chemotherapy. Clinical responses included overall response (OR) and no response (NR)...
November 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29138230/head-to-head-comparison-of-global-and-regional-two-dimensional-speckle-tracking-strain-versus-cardiac-magnetic-resonance-tagging-in-a-multicenter-validation-study
#13
Mihaela Silvia Amzulescu, Hélène Langet, Eric Saloux, Alain Manrique, Laurianne Boileau, Alisson Slimani, Pascal Allain, Clotilde Roy, Christophe de Meester, Agnès Pasquet, Mathieu De Craene, David Vancraeynest, Anne-Catherine Pouleur, Jean-Louis J Vanoverschelde, Bernhard L Gerber
BACKGROUND: Despite widespread use to characterize and refine prognosis, validation data of two-dimensional (2D) speckle tracking (2DST) echocardiography myocardial strain measurement remain scarce. METHODS AND RESULTS: Global and regional subendocardial peak-systolic Lagrangian longitudinal (LS) and circumferential strain (CS) by 2DST and 2D-tagged (2DTagg) cardiac magnetic resonance imaging were compared against sonomicrometry in a dynamic heart phantom and among each other in 136 patients included prospectively at 2 centers...
November 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29137964/oral-glucose-tolerance-test-and-continuous-glucose-monitoring-to-assess-diabetes-development-in-cystic-fibrosis-patients
#14
María Clemente León, Laura Bilbao Gassó, Antonio Moreno-Galdó, Ariadna Campos Martorrell, Silvia Gartner Tizzano, Diego Yeste Fernández, Antonio Carrascosa Lezcano
INTRODUCTION: Patients with cystic fibrosis (CF) undergo a slow and progressive process toward diabetes. Oral glucose tolerance test (OGTT) is recommended to diagnose impaired glucose levels in these patients. Continuous glucose monitoring (CGM) measures glucose profiles under real-life conditions. OBJECTIVE: To compare OGTT and CGM results in CF patients. METHODS: Paired OGTT and 6-day CGM profiles (146.2±9.1h/patient) were performed in 30 CF patients aged 10-18 years...
November 11, 2017: Endocrinología, diabetes y nutrición
https://www.readbyqxmd.com/read/29137775/zno-zro2-nanocomposite-sonosynthesis-characterization-and-its-application-for-wastewater-treatment
#15
Shokufeh Aghabeygi, Mostafa Khademi-Shamami
ZnO/ZrO2 nanocomposites with different ZnO: ZrO2 molar ratios (2:1, 1:1, and 1:2)were prepared by sol gel approach under ultrasonic irradiation. For preparation of the nano-composites, the ZnO gel was directly incorporated into the ZrO2 gel at different molar ratios. The reaction mixture was stirred continuously for two days and then it was ultrasonoicated for 30min. The filtrated composite gel was washed, and then calcinated at 300°C in furnace for 3h. X-ray powder diffraction patterns exhibited well-formed crystal structures and pure crystalline phases in the synthesized nanoparticles (NPs)...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29137651/abnormal-dendritic-calcium-activity-and-synaptic-depotentiation-occur-early-in-a-mouse-model-of-alzheimer-s-disease
#16
Yang Bai, Miao Li, Yanmei Zhou, Lei Ma, Qian Qiao, Wanling Hu, Wei Li, Zachary Patrick Wills, Wen-Biao Gan
BACKGROUND: Alzheimer's disease (AD) is characterized by amyloid deposition, tangle formation as well as synapse loss. Synaptic abnormalities occur early in the pathogenesis of AD. Identifying early synaptic abnormalities and their underlying mechanisms is likely important for the prevention and treatment of AD. METHODS: We performed in vivo two-photon calcium imaging to examine the activities of somas, dendrites and dendritic spines of layer 2/3 pyramidal neurons in the primary motor cortex in the APPswe/PS1dE9 mouse model of AD and age-matched wild type control mice...
November 14, 2017: Molecular Neurodegeneration
https://www.readbyqxmd.com/read/29137544/effect-of-aerobic-training-on-peak-oxygen-uptake-among-seniors-aged-70-or-over-a-meta-analysis-of-randomized-controlled-trials
#17
Walid Bouaziz, Lukshe Kanagaratnam, Thomas Vogel, Elise Schmitt, Moustapha Dramé, Georges Kaltenbach, Bernard Geny, Pierre Olivier Lang
Older adults undergo a progressive decline in cardiorespiratory fitness and functional capacity. This lower peak oxygen uptake (VO2peak) level is associated with increased risk of frailty, dependency, loss of autonomy, and mortality from all causes. Regular physical activity and particularly aerobic training (AT) has been shown to contribute to better and healthy ageing. We conducted a meta-analysis in order to measure the exact benefit of AT on VO2peak in seniors aged 70 years or over. A comprehensive, systematic database search for manuscripts was performed in Embase, Medline, PubMed Central, ScienceDirect, Scopus, and Web of Science using key words...
November 14, 2017: Rejuvenation Research
https://www.readbyqxmd.com/read/29136902/nitrone-formation-a-new-strategy-for-the-derivatization-of-aldehydes-and-its-application-on-the-determination-of-furfurals-in-foods-by-high-performance-liquid-chromatography-with-fluorescence-detection
#18
Ao Zhang, Zhaobing Guan, Hongwei Cai, Yiyong Huang, Yawei Lin, Xiaosong Hu
A nitrone formation method using a novel fluorescent reagent 4-hydroxylaminopropyl-7-methoxylcoumarin (HAMC) has been developed and applied for the determination of furfurals in foods using high performance liquid chromatography with fluorescence detection (HPLC-FLD). Furfurals samples were derivatized by HAMC in aqueous condition at room temperature in less than 30min and were subjected to direct HPLC-FLD analysis without extra purification or extraction. Compared with other conventional methods, nitrone formation method produced single chromatographic peak for each analyte, leading to simpler chromatograms and enhancing the overall sensitivity...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136889/carbon-nanostructured-films-modified-by-metal-nanoparticles-supported-on-filtering-membranes-for-electroanalysis
#19
Erica Paramo, Susana Palmero, Aranzazu Heras, Alvaro Colina
A novel methodology to prepare sensors based on carbon nanostructures electrodes modified by metal nanoparticles is proposed. As a proof of concept, a novel bismuth nanoparticle/carbon nanofiber (Bi-NPs/CNF) electrode and a carbon nanotube (CNT)/gold nanoparticle (Au-NPs) have been developed. Bi-NPs/CNF films were prepared by 1) filtering a dispersion of CNFs on a polytetrafluorethylene (PTFE) filter, and 2) filtering a dispersion of Bi-NPs chemically synthesized through this CNF/PTFE film. Next the electrode is prepared by sticking the Bi-NPs/CNF/PTFE film on a PET substrate...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136861/quality-by-design-approach-in-the-development-of-an-ultra-high-performance-liquid-chromatography-method-for-bexsero-meningococcal-group-b-vaccine
#20
Luca Nompari, Serena Orlandini, Benedetta Pasquini, Cristiana Campa, Michele Rovini, Massimo Del Bubba, Sandra Furlanetto
Bexsero is the first approved vaccine for active immunization of individuals from 2 months of age and older to prevent invasive disease caused by Neisseria meningitidis serogroup B. The active components of the vaccine are Neisseria Heparin Binding Antigen, factor H binding protein, Neisseria adhesin A, produced in Escherichia coli cells by recombinant DNA technology, and Outer Membrane Vesicles (expressing Porin A and Porin B), produced by fermentation of Neisseria meningitidis strain NZ98/254. All the Bexsero active components are adsorbed on aluminum hydroxide and the unadsorbed antigens content is a product critical quality attribute...
February 1, 2018: Talanta
keyword
keyword
71623
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"