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Strength resistance

Baubak Shamim, Brooke L Devlin, Ryan G Timmins, Paul Tofari, Connor Lee Dow, Vernon G Coffey, John A Hawley, Donny M Camera
BACKGROUND: We implemented a high-protein diet (2 g·kg-1 ·d-1 ) throughout 12 weeks of concurrent exercise training to determine whether interferences to adaptation in muscle hypertrophy, strength and power could be attenuated compared to resistance training alone. METHODS: Thirty-two recreationally active males (age: 25 ± 5 years, body mass index: 24 ± 3 kg·m-2 ; mean ± SD) performed 12 weeks of either isolated resistance (RES; n = 10) or endurance (END; n = 10) training (three sessions·w-1 ), or concurrent resistance and endurance (CET; n = 12) training (six sessions·w-1 )...
October 19, 2018: Sports Medicine
Christina M Dieli-Conwright, Kerry S Courneya, Wendy Demark-Wahnefried, Nathalie Sami, Kyuwan Lee, Frank C Sweeney, Christina Stewart, Thomas A Buchanan, Darcy Spicer, Debu Tripathy, Leslie Bernstein, Joanne E Mortimer
BACKGROUND: Exercise is an effective strategy to improve quality of life and physical fitness in breast cancer survivors; however, few studies have focused on the early survivorship period, minorities, physically inactive and obese women, or tested a combined exercise program and measured bone health. Here, we report the effects of a 16-week aerobic and resistance exercise intervention on patient-reported outcomes, physical fitness, and bone health in ethnically diverse, physically inactive, overweight or obese breast cancer survivors...
October 19, 2018: Breast Cancer Research: BCR
Tao Xu, Jiayu Chen, Wenhui Yuan, Yinhua Liu, Yongjun Sun, Huijun Wu, Xiaoqing Zhou
Among recent advances in electronic packaging technologies, electrically conductive adhesives (ECAs) attract most researchers' attention, as they are environment-friendly and simple to apply. ECAs also have a lower operating temperature and volume resistivity compared with conventional electronic conductive adhesives. In ECAs, the conducting fillers play a significant role in improving conductivity and strength. In this work, as filler additives, the silver nanowires/graphene nanocomposites (AgNWs-GNs) were successfully fabricated via a facile self-assembly method...
October 18, 2018: Materials
Maiara Bernardes Marques, Patricia Viera de Oliveira, Solange Binotto Fagan, Bruno Rodrigues Oliveira, Bruna Félix da Silva Nornberg, Daniela Volcan Almeida, Luis Fernando Marins, Michael González-Durruthy
In the present study, the molecular docking mechanism based on pharmacodynamic interactions between the ligands AZD1208 and recognized chemotherapy agents (Vincristine and Daunorubicin) with human ATP-binding cassette (ABC) transporters (ABCB1) was investigated. For the first time, were combined an in silico approaches like molecular docking and ab initio computational simulation based on Density Functional Theory (DFT) to explain the drug-drug interaction mechanism of aforementioned chemotherapy ligands with the transmembrane ligand extrusion binding domains (TMDs) of ABCB1...
October 16, 2018: Toxicology
Collin J Popp, Michelle M Bohan Brown, William C Bridges, Elliot D Jesch
The purpose of this study was to evaluate the effectiveness of recommending a MyPlate or a Paleolithic-based diet, both with and without exercise, on aerobic fitness, strength, and anaerobic power over eight weeks. Participants (n=20) were randomized to one of four groups, (1) a MyPlate diet (MP), (2) Paleolithic-based diet (PD), (3) MyPlate and exercise (MP + Ex), and (4) Paleolithic-based diet and exercise (PD + Ex). The exercise included two days of unsupervised aerobic and resistance exercise. At baseline and final, absolute and relative peak oxygen consumption (absVO2peak and relVO2peak ), anaerobic power, and upper and lower body strength were determined...
2018: International Journal of Exercise Science
Vesna Jurukovska-Shotarovska, Biljana Kapusevska, Biljana Evrosimovska
BACKGROUND: Prefabricated zirconium upgrading systems were examined to satisfy aesthetic needs in endodontically treated teeth. Endodontically treated teeth, together with non-metallic posts and superstructure, are substructures that enable the production of prosthetic structures that will allow aesthetics, resulting from normal light transmission. To investigate and analyse the retention of zirconium post systems cemented with RelyX Unicem 2 Automix (RLX) cement with Pull-out test. AIM: To examine the retention of zirconium post systems, cemented with Multi-Link Automix (MLA) cement and RelyX Unicem 2 Automix (RLX) cement with Pull-out test...
September 25, 2018: Open Access Macedonian Journal of Medical Sciences
Xiankun Lin, Xiaodi Huang, Chenggen Zeng, Wei Wang, Chaogang Ding, Jie Xu, Qiang He, Bin Guo
Highly hydrophilic hydrogels are able to potentially act as fouling-resistant coatings to prevent the settlement of marine organisms, due to the inherent surface properties. It is highly desired to improve mechanical and antifouling (AF) performance of hydrogels for durable and effective usage. Herein, a kind of composite hydrogels with enhanced mechanical properties and synergetic AF activity is prepared in a simple and low-cost way. The cooperation of biocidal copper release and non-fouling interfaces is realized, resulting in improved AF performance...
October 9, 2018: Journal of Colloid and Interface Science
Cuifeng Ying, Jared Houghtaling, Olivia M Eggenberger, Anirvan Guha, Dr Peter Nirmalraj, Saurabh Awasthi, Jianguo Tian, Michael Mayer
Nanopores with diameters from 20-50 nm in silicon nitride (SiNx) windows are useful for single-molecule studies of globular macromolecules. While controlled breakdown (CBD) is gaining popularity as a method for fabricating nanopores with reproducible size control and broad accessibility, attempts to fabricate large nanopores with diameters exceeding ~20 nm via breakdown often result in undesirable formation of multiple nanopores in SiNx membranes. To reduce the probability of producing multiple pores, we combined two strategies: laser-assisted breakdown and controlled pore enlargement by limiting the applied voltage...
October 18, 2018: ACS Nano
Wissem Dhahbi, Maha Sellami, Anis Chaouachi, Johnny Padulo, Mirjana Milic, Imed Mekki, Karim Chamari
The purpose of the present investigation was to follow-up the effect of specific commandos' training-cycles (SCTCs) on upper-body strength resistance and running endurance performance, as well as determine whether variation in seasonal parameters has any effect on physical performance. Fourteen SCTCs were held over eight years, involving 466 participants. Participants were assigned to four subgroups according to their distribution over the seasons: summer (n = 124), autumn (n = 145), winter (n = 52) and spring (n = 145)...
2018: PloS One
Kevin H Choe, Jared W Coburn, Pablo B Costa, Derek N Pamukoff
Choe, KH, Coburn, JW, Costa, PB, and Pamukoff, DN. Hip and knee kinetics during a back-squat and deadlift. J Strength Cond Res XX(X): 000-000, 2018-The back-squat and deadlift are performed to improve hip and knee extensor function. The purpose of this study was to compare lower extremity joint kinetics (peak net joint moments [NJMs] and positive joint work [PJW]) between the back-squat and deadlift. Twenty-eight resistance-trained subjects (17 men: 23.7 ± 4.3 years, 1.76 ± 0.09 m, 78.11 ± 10.91 kg; 11 women: 23...
October 17, 2018: Journal of Strength and Conditioning Research
Manuel V Garnacho-Castaño, Lluis Albesa-Albiol, Noemí Serra-Payá, Manuel Gomis Bataller, Eulogio Pleguezuelos Cobo, Lluis Guirao Cano, Jesús Guodemar-Pérez, Teresa Carbonell, Raúl Domínguez, José Luis Maté-Muñoz
Garnacho-Castaño, MV, Albesa-Albiol, L, Serra-Payá, N, Gomis Bataller, M, Pleguezuelos Cobo, E, Guirao Cano, L, Guodemar-Pérez, J, Carbonell, T, Domínguez, R, and Maté-Muñoz, JL. Oxygen uptake slow component and the efficiency of resistance exercises. J Strength Cond Res XX(X): 000-000, 2018-This study aimed to evaluate oxygen uptake slow component (V[Combining Dot Above]O2sc) and mechanical economy/efficiency in half squat (HS) exercise during constant-load tests conducted at lactate threshold (LT) intensity...
October 17, 2018: Journal of Strength and Conditioning Research
Daniela Becker, Nils B Jostmann, Wilhelm Hofmann, Rob W Holland
People often experience self-control conflicts (i.e., feel tempted to indulge while motivated to resist). But, how do people feel after making such conflicted self-control choices? Whereas previous research has focused almost exclusively on the influence of choice outcomes (healthy vs. unhealthy) on emotional reactions (e.g., pride vs. guilt), we propose that the experience of conflict during decision making could have a unique influence, possibly fueling negative emotions (i.e., regret) regardless of people's choice outcomes...
October 18, 2018: Emotion
Bo Wang, Pengpeng Shao, Jie Li, Fan Chen, Li Ma, Qingbin Li, Mengxi Zhang, Junwen Zhou, Anxiang Yin, Xiao Feng
Covalent organic framework (COF) films combine the processibility of polymers with porosity and atomic precision of crystalline porous materials are long-sought-after in electronics yet hard to realize. Here, we prepared four flexible COF films with different alkoxy side chains via interfacial polymerization. The COF films exhibit ultralow dielectric constant (κ = 1.19 ± 0.04 at 105 Hz), small dielectric loss (< 0.02, 103 ~ 106 Hz), high breakdown voltage (> 63 kV cm-1) and low leakage current (10-10 A cm-2 at 1 kV cm-1)...
October 17, 2018: Angewandte Chemie
M Caccia, M Tabandeh-Khorshid, G Itskos, A R Strayer, A S Caldwell, S Pidaparti, S Singnisai, A D Rohskopf, A M Schroeder, D Jarrahbashi, T Kang, S Sahoo, N R Kadasala, A Marquez-Rossy, M H Anderson, E Lara-Curzio, D Ranjan, A Henry, K H Sandhage
The efficiency of generating electricity from heat using concentrated solar power plants (which use mirrors or lenses to concentrate sunlight in order to drive heat engines, usually involving turbines) may be appreciably increased by operating with higher turbine inlet temperatures, but this would require improved heat exchanger materials. By operating turbines with inlet temperatures above 1,023 kelvin using closed-cycle high-pressure supercritical carbon dioxide (sCO2 ) recompression cycles, instead of using conventional (such as subcritical steam Rankine) cycles with inlet temperatures below 823 kelvin1-3 , the relative heat-to-electricity conversion efficiency may be increased by more than 20 per cent...
October 2018: Nature
Botian Li, Da Xiao, Dongsheng Deng, Haimu Ye, Qiong Zhou, Liming Tang
In this study, a novel self-assembled metal-organic gel was synthesized from ferric nitrate and a di-topic ligand, bis(3-pyridyl)terephthalate. The gel consisted of a three dimensional network of uniform nanofibers. The gelation exhibited high selectivity to Fe(iii) based on metal-ligand coordination. The molar ratio of Fe3+ to ligand had a large influence on the assembly process and the morphology of the gel. The metallogel displayed multi-stimuli responsiveness and excellent heat resistance, thus was further applied as a thermo-stable template for the polymerization of N,N'-methylene bisacrylamide to produce the core/shell polymer composite nanowires...
October 17, 2018: Soft Matter
Brendan R Scott, Jeremiah J Peiffer, Hannah J Thomas, Kieran J Marston, Keith D Hill
Introduction: Blood flow restriction (BFR) during low-load resistance exercise increases muscle size similarly to high-load training, and may be an alternative to lifting heavy weights for older people at risk of sarcopenia. However, few studies have addressed the safety of such exercise in older people, or whether this is impacted by the actual exercises performed during training. This study aimed to compare the acute hemodynamic and perceptual responses during low-load BFR exercise to unrestricted low-load and high-load exercise in older women, and to determine whether these responses depend on the type of exercise performed...
2018: Frontiers in Physiology
Clara Roujeau, Ralf Jockers, Julie Dam
Endospanin 1 (Endo1), a protein encoded, in humans by the same gene than the leptin receptor (ObR), and increased by diet induced obesity, is an important regulator of ObR trafficking and cell surface exposure, determining leptin signaling strength. Defective intracellular trafficking of the leptin receptor to the neuronal plasma membrane has been proposed as a mechanism underlying the development of leptin resistance observed in human obesity. More recently, Endo1 has emerged as a mediator of "selective leptin resistance"...
October 16, 2018: Neuroendocrinology
M B Ogurkowska, A Błaszczyk
BACKGROUND: The human spine, in particular the lumbar spine, is subject to significant compressive and bending stresses, which affect the structure of the bone tissue of the vertebrae. The more heterogeneous the structure of the spongy bone tissue, the less resistant the whole vertebral body. It is therefore necessary to establish variations in bone strength parameters within one particular vertebral body. METHODS: The research material comprised human L1-L5 lumbar vertebrae sampled from 15 donors aged 29-35...
October 10, 2018: Clinical Biomechanics
Johanna Jonsdottir, Elisa Gervasoni, Thomas Bowman, Rita Bertoni, Eleonora Tavazzi, Marco Rovaris, Davide Cattaneo
Introduction: Persons with multiple sclerosis (MS) have deficits in many aspects of physical and cognitive functioning that can impact on mobility and participation in daily life. The effect of a 4 week intensive multimodal treadmill training on functional mobility, balance, executive functions and participation in persons with MS with moderate to severe disability was investigated. Methods: Thirty eight persons with MS admitted to a rehabilitation center participated in a two arm randomized 2:1 controlled trial...
2018: Frontiers in Neurology
Eder Alberto Sigua-Rodriguez, Raquel Correia de Medeiros, Douglas Rangel Goulart, Veber Luiz Bomfim-Azevedo, Sergio Olate, Jose Ricardo de Albergaria-Barbosa
PURPOSE: To compare the mechanical characteristics of five techniques for the functionally stable fixation of simulated sagittal split ramus osteotomy with 10 mm of advancement and to evaluate the screw insertion torque. MATERIALS AND METHODS: Fifty polyurethane hemimandibles with sagittal split ramus osteotomy and containing an advancement of 10 mm fixed and distributed as follows: Customized 3D Plate Group: 1 customized 3D miniplate; 4-Hole Plate Group: 2 miniplates with 4 holes; 6-Hole Plate Group: 2 miniplates with 6 holes; Hybrid Group: 1 flat miniplate with 4 holes and 1 bicortical screw; and Bicortical Screw Group: 3 bicortical screws...
September 26, 2018: Journal of Cranio-maxillo-facial Surgery
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