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Gabriele Miotto, Yan Ortiz-Pomales
Arm contour improvement is a desired goal of the massive weight loss and the aging population who want to maintain the arm aesthetics. Brachioplasty is a growing and safe procedure to improve the arm contour and different approaches and innovative treatment options have been described since the 1930s. This paper reviews the relevant literature in arm contouring including surgical and nonsurgical procedures used to aesthetically improve the arm. A comprehensive literature review was performed using the words "brachioplasty," "arm lift," "arm contouring," "arm liposuction," "noninvasive arm lift," "minimally invasive arm lift...
March 12, 2018: Aesthetic Surgery Journal
Neeraj Kumar, Kishore Kumar Krishnani, Sanjay Kumar Gupta, Narendra Pratap Singh
Nanotechnology is a novel arena with promising applications in the field of medicine, industry, and agriculture including fisheries. Cross-disciplinary interactions and the application of this technology in biological systems have led to the innovation of novel nanoparticle antioxidants, which are the subject of our study. In context with above background, we designed an experiment on nano-silver to elucidate its role for mitigation of abiotic and biotic stress. Three diets were formulated viz. silver nanoparticles (Ag-NPs) incorporated at 0...
March 14, 2018: Environmental Science and Pollution Research International
Jonathan S Howard, Cherilyn N McLester, Thomas W Evans, John R McLester, Jimmy P Calloway
The PhysioFlow™ is a piece of equipment that uses bioimpedance cardiography to measure central hemodynamics. The purpose of this research was to explore the novel approach of monitoring central hemodynamics during free weight resistance exercise using bioimpedance cardiography throughout a 5 repetition maximum (5RM). Thirty participants ranging from beginner to advanced lifters (16 males and 14 females) completed a 5RM for back squat, seated push press, and bicep curl while connected to the PhysioFlow™ to assess the response of heart rate (HR), stroke volume (SV), cardiac output (Q), and ejection fraction (EF)...
2018: International Journal of Exercise Science
Davood Afshari, Seyed Mahmood Latifi, Samira Kord, Maryam Nourollahi-Darabad
In 2011, load limits for manual lifting were adopted in Iran to protect workers from low back injury without prior testing of accuracy with Iranian workers. This investigation examined how accurate the adopted ACGIH TLVs at the allowable limits predict risk for LBP disorders for a group of Iranian workers using biomechanical criteria. Testing took place in the laboratory with participants completing a series of 2-handed lifting tasks as defined in the Iranian Guideline for Manual Lifting. To test accuracy, both compression and shear forces were estimated for fifteen male Iranian workers who completed 25 lift combinations that varied in height and reach with the maximal allowable load...
March 13, 2018: Industrial Health
Robert F Centeno
Massive weight loss patients and aesthetic patients can present with significant gluteal contour abnormalities. Gluteal ptosis, skeletal deformities, severe platypgia, and a paucity of donor fat for autologous transfer are common problems. Excisional procedures are used to treat massive-weight-loss contour abnormalities. These procedures present an opportunity to address severe gluteal deformities using autologous tissue augmentation. With a working knowledge of the relevant anatomy, sound surgical technique, and meticulous postoperative care, autologous gluteal autoaugmentation with circumferential body lift/excisional buttock lift using the "Moustache" flap technique will enhance massive weight loss body contouring outcomes and improve patient satisfaction...
April 2018: Clinics in Plastic Surgery
Mansour Ziaei, Alireza Choobineh, Mohammad Abdoli-Eramaki, Haleh Ghaem
In Iran-Shiraz, municipal solid waste is collected manually requiring strenuous physical activities. This study was conducted to determine the prevalence rate of musculoskeletal disorders (MSDs) and its associated risk factors. Two hundred male waste collectors participated in this cross-sectional study, in which task analysis followed by motion and timeline analysis were performed. The data were collected using demographic, occupation-specific physical and organizational demands, and Nordic musculoskeletal questionnaires...
March 3, 2018: Industrial Health
Comtet-Louis Andriamanampisoa, Aurélien Bancaud, Audrey Boutonnet-Rodat, Audrey Didelot, Jacques Fabre, Frederic Fina, Fanny Garlan, Sonia Garrigou, Caroline Gaudy, Frederic Ginot, Daniel Henaff, Pierre Laurent-Puig, Arnaud Morin, Vincent Picot, Laure Saias, Valerie Taly, Pascale Tomasini, Aziz Zaanan
We describe a technology to perform sizing and concentration analysis of double stranded DNA with a sensitivity of 10 fg/µL in an operating time of 20 minutes. The technology is operated automatically on a commercial capillary electrophoresis instrument using electro-hydrodynamic actuation. It relies on a new capillary device that achieves on-line concentration of DNA at the junction between two capillaries of different diameters, thanks to viscoelastic lift forces. Using a set of DNA ladders in the range 100-1500 bp, we report a sizing accuracy and precision better than 3%, and a concentration quantification precision of ~20%...
March 2, 2018: Analytical Chemistry
Rachel Ellis, Anne E Holland, Karen Dodd, Nora Shields
PURPOSE: Evaluate intra-rater and inter-rater reliability of the one-repetition maximum strength test in people with chronic heart failure. DESIGN: Intra-rater and inter-rater reliability study. SETTING: A public tertiary hospital in northern metropolitan Melbourne. PARTICIPANTS: Twenty-four participants (nine female, mean age 71.8 ± 13.1 years) with mild to moderate heart failure of any aetiology. METHODS: Lower limb strength was assessed by determining the maximum weight that could be lifted using a leg press...
February 24, 2018: Disability and Rehabilitation
Nicolas Isola, Eric Watier, Nicolas Bertheuil
No abstract text is available yet for this article.
February 15, 2018: Aesthetic Surgery Journal
Deema Totah, Lauro Ojeda, Daniel D Johnson, Deanna Gates, Emily Mower Provost, Kira Barton
OBJECTIVE: Numerous devices have been designed to support the back during lifting tasks. To improve the utility of such devices, this research explores the use of preparatory muscle activity to classify muscle loading and initiate appropriate device activation. The goal of this study was to determine the earliest time window that enabled accurate load classification during a dynamic lifting task. METHODS: Nine subjects performed thirty symmetrical lifts, split evenly across three weight conditions (no-weight, 10-lbs and 24-lbs), while low-back muscle activity data was collected...
2018: PloS One
Christian Wolf, Wouter M Bergmann Tiest, Knut Drewing
When judging the heaviness of two objects with equal mass, people perceive the smaller and denser of the two as being heavier. Despite the large number of theories, covering bottom-up and top-down approaches, none of them can fully account for all aspects of this size-weight illusion and thus for human heaviness perception. Here we propose a new maximum-likelihood estimation model which describes the illusion as the weighted average of two heaviness estimates with correlated noise: One estimate derived from the object's mass, and the other from the object's density, with estimates' weights based on their relative reliabilities...
2018: PloS One
Peter Axelsson, Per Fredrikson, Anders Nilsson, Jonny K Andersson, Johan Kärrholm
PURPOSE: To establish reference values for new methods designed to quantitatively measure forearm torque and lifting strength and to compare these values with grip strength. METHODS: A total of 499 volunteers, 262 males and 237 females, aged 15 to 85 (mean, 44) years, were tested for lifting strength and forearm torque with the Kern and Baseline dynamometers. These individuals were also tested for grip strength with a Jamar dynamometer. Standardized procedures were used and information about sex, height, weight, hand dominance, and whether their work involved high or low manual strain was collected...
February 10, 2018: Journal of Hand Surgery
Hassan Mohamed Elsangedy, Daniel Gomes da Silva Machado, Kleverton Krinski, Paulo Henrique Duarte do Nascimento, Gledson Tavares de Amorim Oliveira, Tony Meireles Santos, Elaine A Hargreaves, Gaynor Parfitt
PURPOSE: The purpose of this study was to evaluate the feasibility and reliability of the Feeling Scale (FS) to self-regulate resistance training (RT) intensity. METHODS: Sixteen sedentary men (39.7±7.5 years) performed 3 familiarization sessions, 2 one repetition maximum testing (1RM), and 16 RT sessions (4 sessions for each FS descriptor; randomized). The FS descriptors were "very good" (FS+5), "good" (FS+3), "fairly good" (FS+1), and "fairly bad" (FS-1)...
February 9, 2018: Medicine and Science in Sports and Exercise
Yanhui Song, Susheng Zhou, Kaiyun Jin, Jian Qiao, Da Li, Chao Xu, Dongmei Hu, Jiangtao Di, Min Li, Zuoguang Zhang, Qingwen Li
Hybrid smart actuators fabricated using composites of carbon fibers and shape memory polymers have been extensively studied in recent years. However, relatively slow shape recovery has combined with the reset of shape deformation during cycles to restrict their practical use. An electrothermally reversible actuator based on carbon nanotube (CNT) composite yarn containing CNT fiber and thermoplastic polyurethane (TPU) resin with excellent shape memory was investigated in this paper. The combination of CNT yarn and TPU resin considerably amplified the contraction and stability...
February 12, 2018: Nanoscale
Amrita Rath, P M Geethu, Santhosh Mathesan, Dillip K Satapathy, Pijush Ghosh
We report the controlled reversible and irreversible folding behavior of a biopolymer film simply by tuning the solvent characteristics. Generally, solvent triggered folding of soft membranes or film is achieved by unfolding. Here, we show that this unfolding behavior can be suppressed/delayed or even completely eliminated by altering the intrinsic nature of the solvent. A reversible folding of biopolymer film is observed in response to water, whereas, an irreversible folding is observed in the presence of an aromatic alcohol (AA) solution of different molar concentrations...
February 7, 2018: Soft Matter
Marcie C Swift, Robert Townsend, Douglas W Edwards, Janice K Loudon
PURPOSE: The purpose of this study was to explore the difference in maximal lifting capability between 2 modes of lifting (traditional crate and XRTS Lever Arm) over multiple days. The differences in absolute strength values were compared with existing criteria for sincere effort during distraction-based lifting. In addition, rate of perceived exertion (RPE) is presented for the 2 modes of lifting on each day. PRIMARY PRACTICE SETTING: Workers' compensation. METHODOLOGY AND SAMPLE: Forty-four subjects between the ages of 20 and 44 years participated in this study...
February 2, 2018: Professional Case Management
Takahiro Isshiki, Jacobo Antona-Makoshi, Atsuhiro Konosu, Yukou Takahashi
This study addresses the virtual optimization of the technical specifications for a recently developed Advanced Pedestrian Legform Impactor (aPLI). The aPLI incorporates a number of enhancements for improved lower limb injury predictability with respect to its predecessor, the FlexPLI. It also incorporates an attached Simplified Upper Body Part (SUBP) that enables the impactor's applicability to evaluate pedestrian's lower limb injury risk also with high-bumper cars. The response surface methodology was applied to optimize both the aPLI's lower limb and SUBP specifications, while imposing a total mass upper limit of 25 kg that complies with international standards for maximum weight lifting allowed for a single operator in the laboratory setting...
November 2017: Stapp Car Crash Journal
Alberto de Castro Pochini, Marcus de Souza Barbosa Rodrigues, Larissa Yamashita, Paulo Santoro Belangero, Carlos Vicente Andreoli, Benno Ejnisman
Objective: To assess the tendon reconstruction technique for total rupture of the pectoralis major muscle using an adjustable cortical button. Methods: Prospective study of 27 male patients with a mean age of 29.9 (SD = 5.3 years) and follow-up of 2.3 years. The procedure consisted of autologous grafts taken from the semitendinosus and gracilis tendons and an adjustable cortical button. Patients were evaluated functionally by the Bak criteria. Results: The surgical treatment of pectoralis major muscle tendon reconstruction was performed in the early stages (three weeks) in six patients (22...
January 2018: Revista Brasileira de Ortopedia
Kevin P Liles, Angelique F Greene, Mary K Danielson, Nathan D Colley, Andrew Wellen, Jeremy M Fisher, Jonathan C Barnes
The use of light to actuate materials is advantageous because it represents a cost-effective and operationally straightforward way to introduce energy into a stimuli-responsive system. Common strategies for photoinduced actuation of materials typically rely on light irradiation to isomerize azobenzene or spiropyran derivatives, or to induce unidirectional rotation of molecular motors incorporated into a 3D polymer network. Although interest in photoredox catalysis has risen exponentially in the past decade, there are far fewer examples where photoinduced electron transfer (PET) processes are employed to actuate materials...
January 24, 2018: Macromolecular Rapid Communications
Jiawen Chen, Franco King-Chi Leung, Marc C A Stuart, Takashi Kajitani, Takanori Fukushima, Erik van der Giessen, Ben L Feringa
A striking feature of living systems is their ability to produce motility by amplification of collective molecular motion from the nanoscale up to macroscopic dimensions. Some of nature's protein motors, such as myosin in muscle tissue, consist of a hierarchical supramolecular assembly of very large proteins, in which mechanical stress induces a coordinated movement. However, artificial molecular muscles have often relied on covalent polymer-based actuators. Here, we describe the macroscopic contractile muscle-like motion of a supramolecular system (comprising 95% water) formed by the hierarchical self-assembly of a photoresponsive amphiphilic molecular motor...
February 2018: Nature Chemistry
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