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Strength resistance

Jianhong Zhou, Bo Li, Yong Han
To enhance bacterial resistance and osteogenesis of titanium (Ti) -based implants, TiO2 /calcium-phosphate coatings (TiCP) doped with various amounts of fluorine (F) (designated as TiCP-F1, TiCP-F6, and TiCP-F9) were prepared on Ti by micro-arc oxidation. The F doped TiCP coatings possess a microporous structure (pore size of 3-4 μm in average diameter) which is evenly covered by nano-grains of 30-60 nm in size. Successful F incorporation into TiCP was determined by X-ray photoelectron spectroscopy, and it shows weak influence on the microstructure, phase compositions, surface roughness and wettability of TiCP...
December 14, 2018: Scientific Reports
Wei Guo, Rodrigo Machado-Vieira, Sanjay Mathew, James W Murrough, Dennis S Charney, Matthew Gruenbaum, Maria A Oquendo, Bashkim Kadriu, Nirmala Akula, Ioline Henter, Peixiong Yuan, Kathleen Merikangas, Wayne Drevets, Maura Furey, J John Mann, Francis J McMahon, Carlos A Zarate, Yin Yao Shugart
Growing evidence suggests that the glutamatergic modulator ketamine has rapid antidepressant effects in treatment-resistant depressed subjects. The anticholinergic agent scopolamine has also shown promise as a rapid-acting antidepressant. This study applied genome-wide markers to investigate the role of genetic variants in predicting acute antidepressant response to both agents. The ketamine-treated sample included 157 unrelated European subjects with major depressive disorder (MDD) or bipolar disorder (BD)...
December 14, 2018: Translational Psychiatry
Jia-Qi Zhu, Qing-Sheng Yang, Xiao-Qiao He, Kun-Kun Fu
Due to their excellent properties and two-dimensional geometry, graphenes (Grs) have been widely used as reinforced fillers in graphene/aluminum nanolaminated composite (GANC). The separation and slippage behavior of the GANC is highly dependent on the interfacial properties between Gr and aluminum (Al). In this study, two interfacial failures of GANCs, i.e., pull-up failure and pull-out failure, were investigated using a molecular dynamics (MD) method. The effects of the crystal orientation of single-crystal Al component and the geometry of the Gr component on the normal and shear interfacial properties of the GANC were examined...
December 13, 2018: Nanomaterials
Pearlin Hameed, Vasanth Gopal, Stefan Bjorklund, Ashish Ganvir, Dwaipayan Sen, Nicolaie Markocsan, Geetha Manivasagam
Dissolution of atmospheric plasma sprayed (APS) hydroxyapatite (HAp) coatings on Ti-6Al-4 V medical implants have always been a challenge to overcome in the field of biomedical industry. In the present work, an attempt has been made to develop a HAp coating using a novel thermal spray process called axial suspension plasma spraying (SPS), which leads to thin adherent coatings. Two HAp coatings fabricated by APS (P1 and P2) and four SPS HAp coatings (S1, S2, S3 and S4) produced with varying spraying parameters were characterized in terms of (1) microstructure, porosity, hardness, adhesion strength, contact angle and phase purity; (2) corrosion resistance in 10% Fetal bovine serum (FBS); (3) in-vitro cell adherence and cell viability using human umbilical cord blood-derived mesenchymal stem cells (hMSCs)...
January 1, 2019: Colloids and Surfaces. B, Biointerfaces
Tsuyoshi Suzuki, Sandra Palus, Jochen Springer
Patients suffering from chronic heart failure (CHF) show an increased prevalence (~20% in elderly CHF patients) of loss of muscle mass and muscle function (i.e. sarcopenia) compared with healthy elderly people. Sarcopenia, which can also occur in obese patients, is considered a strong predictor of frailty, disability, and mortality in older persons and is present in 5-13% of elderly persons aged 60-70 years and up to 50% of all octogenarians. In a CHF study, sarcopenia was associated with lower strength, reduced peak oxygen consumption (peak VO2 , 1173 ± 433 vs...
December 7, 2018: ESC Heart Failure
Henrik Petré, Fredrik Wernstål, C Mikael Mattsson
BACKGROUND: Strength and power development are abilities important for athletic performance in many sports. Generally, resistance training based on gravity is used to improve these qualities. Flywheel training instead utilizes kinetic energy transferred to a flywheel. This allows for eccentric overload and variable resistance throughout the movement. The aim of this review was to identify the effects of flywheel training on multiple strength-related variables affecting athletic performance...
December 13, 2018: Sports Medicine—Open
Vasilios A Morikis, Scott I Simon
Neutrophils are the most motile of mammalian cells, a feature that enables them to protect the host against the rapid spread of pathogens from tissue into the circulatory system. A critical process is the recruitment of neutrophils to inflamed endothelium within post-capillary venules. This occurs through cooperation between at least four families of adhesion molecules and G-protein coupled signaling receptors. These adhesion molecules convert the drag force induced by blood flow acting on the cell surface into bond tension that resists detachment...
2018: Frontiers in Immunology
Armiliana Soares Nascimento, Leonardo Jose Rodrigues de Oliveira, Agda Tais Moura, Alexandrino Pereira Dos Santos Neto, Monica Soares de Albuquerque, Mabel Yasmin Suarez, Paulo Torban, Rodivan Braz
Background: Teeth with severe crown destruction and endodontically treated may or may not present a circular strip of dental tissue located in the cervical region called ferrule. Aims: The aims of this study were to evaluate ferrule thickness influence on endodontically treated teeth (ETT) resistance to fracture. Materials and Methods: A total of 30 bovine incisor teeth were selected, endodontically treated and randomly distributed, according to the ferrule thickness: G1- no ferrule, G2 - 1 mm, and G3 - 2 mm...
November 2018: Journal of Conservative Dentistry: JCD
Laura Andriukaitiene, Xiaobo Song, Nannan Yang, Lippo V J Lassila, Pekka K Vallittu, Eero Kerosuo
BACKGROUND: The aim of the study was to assess bacterial sealability and bonding ability of methacrylate-based Resilon (RS, SybronEndo), Endo Rez (ER, Ultradent Products Inc), and epoxy-based AH Plus (AH, Dentsply/DeTrey), MTA Fill Apex (MTAF, Angelus Soluções Odontológicas) root canal sealers, and the effect of the smear layer removal on the sealability. METHODS: One hundred thirty root segments were instrumented up to apical size #60 and rinsed with 2.5% NaOCl...
December 13, 2018: BMC Oral Health
Ines Schadock, Barbara G Freitas, Irae L Moreira, Joao A Rincon, Marcio Nunes Correa, Renata Zanella, Evelise Sampaio Silva, Ronaldo Carvalho Araujo, Marcia Rubia D Buchweitz, Elizabete Helbig, Fabricio B Del Vecchio, Augusto Schneider, Carlos Castilho Barros
β-hydroxy-β-methyl butyrate (HMB) is a bioactive metabolite derived from the amino acid leucine, usually applied for muscle mass increase during physical training, as well as for muscle mass maintenance in debilitating chronic diseases. The hypothesis of the present study is that HMB is a safe supplement for muscle mass gain by strength training. Based on this, the objective was to measure changes in body composition, glucose homeostasis and hepatic metabolism of HMB supplemented mice during strength training...
December 14, 2018: International Journal for Vitamin and Nutrition Research. Journal International de Vitaminologie et de Nutrition
Matheus Barbalho, Paulo Gentil, Rodolfo Raiol, Fabrício Boscolo Del Vecchio, Rodrigo Ramirez-Campillo, Victor Silveira Coswig
BACKGROUND: The maximal one-repetition test (1-RM) is widely used in scientific research; however, there are conflicting results regarding its reproducibility in elderly populations. The present study aimed to analyze the reproducibility of the test both before and after a 12-week training period by using the bench press and leg press 45° 1-RM tests in the elderly, taking into consideration the training experience and strength level of the women. METHODS: Elderly women (n = 376; age, 68...
December 11, 2018: Sports
Yongchun Cheng, Wensheng Wang, Yafeng Gong, Shurong Wang, Shuting Yang, Xun Sun
The main distresses of asphalt pavements in seasonal frozen regions are due to the effects of water action, freeze-thaw cycles, traffic, and so on. Fibers are usually used to reinforce asphalt mixtures, in order to improve its mechanical properties. Basalt fiber is an eco-friendly mineral fiber with high mechanical performance, low water absorption, and an appropriate temperature range. This paper aims to address the freeze-thaw damage characteristics of asphalt mixtures (AC-13) reinforced with eco-friendly basalt fiber, with a length of 6 mm...
December 7, 2018: Materials
(no author information available yet)
OBJECTIVEEssential tremor (ET) is the most common movement disorder. Drug-resistant ET can benefit from standard stereotactic deep brain stimulation or radiofrequency thalamotomy or, alternatively, minimally invasive techniques, including stereotactic radiosurgery (SRS) and high-intensity focused ultrasound, at the level of the ventral intermediate nucleus (Vim). The aim of the present study was to evaluate potential correlations between pretherapeutic interconnectivity (IC), as depicted on resting-state functional MRI (rs-fMRI), and MR signature volume at 1 year after Vim SRS for tremor, to be able to potentially identify hypo- and hyperresponders based only on pretherapeutic neuroimaging data...
December 1, 2018: Journal of Neurosurgery
Marianne K Schallmo, Sharon Dudley-Brown, Patricia M Davidson
CONTEXT: Heart failure is a chronic complex syndrome that is common and burdensome. International clinical practice guidelines recommend that healthcare providers communicate palliative care options with patients with heart failure. OBJECTIVES: The aim of this study was to conduct an integrative review to evaluate how healthcare providers perceived communication barriers to offering information to individuals in the palliative phase of heart failure. METHODS: Four databases and the gray literature were searched from January 1987 to February 2017...
December 11, 2018: Journal of Cardiovascular Nursing
Thomas Bjørnsen, Mathias Wernbom, Amund Tjellaug Løvstad, Gøran Paulsen, Randall F D'Souza, David Cameron-Smith, Alexander Flesche, Jonny Hisdal, Sveinung Berntsen, Truls Raastad
PURPOSE: To investigate muscle hypertrophy, strength, myonuclear and satellite cell (SC) responses to high-frequency blood flow restricted resistance exercise (BFRRE). METHODS: Thirteen individuals (24±2 years [mean ± SD], 9 males) completed two 5-day-blocks of 7 BFRRE sessions, separated by a 10-day rest period. Four sets of unilateral knee extensions to voluntary failure at 20% of 1RM were conducted with partial blood flow restriction (90-100 mmHg). Muscle samples obtained before-, during, 3- and 10 days after training were analyzed for muscle fiber area (MFA), myonuclei, SC, and mRNA and miRNA expression...
December 13, 2018: Journal of Applied Physiology
Lushi Kong, Yu Wang, Hongsheng Yu, Bingxue Liu, Shengli Qi, Dezhen Wu, Wei-Hong Zhong, Guofeng Tian, Jie Wang
Development of non-flammable separators with excellent properties is in urgent need by next-generation advanced and safe energy storage devices. However, it has been extremely challenging to simultaneously achieve fire-resistance, high mechanical strength, good thermo-mechanical stability and low ion-transport resistance for polymeric separators. Herein, to address all these needs, we report an in-situ formed core-shell silica@ silica-imbedded polyimide (in-situ SiO2 @(PI/SiO2 )) nanofabric as a new high-performance inorganic-organic hybrid separator...
December 13, 2018: ACS Applied Materials & Interfaces
Hélio J Coelho-Júnior, Ivan de Oliveira Gonçalves, Niels O S Câmara, Marco A Cenedeze, Reury F Bacurau, Ricardo Yukio Asano, Jeferson Santana, Erico Caperuto, Marco C Uchida, Bruno Rodrigues
The present study aimed at investigating the effects of a daily undulating periodization (DUP) and non-periodized (NP) resistance training programs on hemodynamic parameters of older women. Forty-two older women were randomized into one of the three experimental groups: NP, DUP, and control group (CG). Evaluations of the hemodynamic parameters occurred before, during and after the intervention. The exercise programs were performed twice a week over 22 weeks. NP and DUP groups were based on 3 sets of 8-10 repetitions in 9 exercises...
2018: Frontiers in Physiology
(no author information available yet)
No abstract text is available yet for this article.
November 2018: Journal of Strength and Conditioning Research
Wanderson Divino Nilo Dos Santos, Paulo Gentil, Alexandre Lima de Araújo Ribeiro, Carlos Alexandre Vieira, Wagner Rodrigues Martins
No abstract text is available yet for this article.
November 2018: Journal of Strength and Conditioning Research
Ali H Tayeb, Mehdi Tajvidi
Cellulose nanofibrils (CNFs) are able to form strong oxygen-barrier films suitable for food packaging but lack the needed water resistance in comparison to plastics. Desired water barrier quality can be achieved by applying mineral additives within the nanofibrils network. In current contribution, a sustainable hybrid system with improved water-barrier function is proposed by incorporating colloidal montmorillonite nano-clay (MMT) and two crosslinking agents namely; polyamidoamine epichlorohydrin (PAE) and Acrodur® thermoset acrylic resin (ACR) into CNF interfaces...
December 12, 2018: ACS Applied Materials & Interfaces
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