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Weight lifting

Wolf Schwarz, Dennis Reike
When objects are manually lifted to compare their weight, then smaller objects are judged to be heavier than larger objects of the same physical weights: the classical size-weight illusion (Gregory, 2004). It is also well established that increasing numerical magnitude is strongly associated with increasing physical size: the number-size congruency effect e.g., (Besner & Coltheart Neuropsychologia, 17, 467-472 1979); Henik & Tzelgov Memory & Cognition, 10, 389-395 1982). The present study investigates the question suggested by combining these two classical effects: if smaller numbers are associated with smaller size, and objects of smaller size appear heavier, then are numbered objects (balls) of equal weight and size also judged as heavier when they carry smaller numbers? We present two experiments testing this hypothesis for weight comparisons of numbered (1 to 9) balls of equal size and weight, and report results which largely conform to an interpretation in terms of a new "number-weight illusion"...
May 11, 2018: Psychonomic Bulletin & Review
N Girish, Iqbal Rauf, Khanzode Vivek
BACKGROUND: Recommended weight limit for manual materials handlers has to be decided based on the individual characteristics of the person and age is one of the major variable affecting maximal lifting capacity. But there is limited information on pattern of change in lifting capacity with age. OBJECTIVE: To determine the influence of age on the maximum acceptable weight of lift among manual materials handlers. METHODS: Two hundred and seventeen male construction workers were grouped into four age quotas- 19-28, 29-38, 39-48 and 49-58 years...
May 1, 2018: Work: a Journal of Prevention, Assessment, and Rehabilitation
A Salehi Sahl Abadi, A Mazloumi, G Nasl Saraji, H Zeraati, M R Hadian, A H Jafari
Background: In spite of the increasing degree of automation in industry, manual material handling (MMH) is still performed in many occupational settings. The aim of the current study was to determine the maximum acceptable weight of lift using psychophysical and electromyography indices. Methods: This experimental study was conducted among 15 male students recruited from Tehran University of Medical Sciences. Each participant performed 18 different lifting tasks which involved three lifting frequencies, three lifting heights and two box sizes...
March 2018: Journal of Biomedical Physics & Engineering
Helen M Bannon, Nils A Hakansson, Markus D Jakobsen, Emil Sundstrup, Michael J Jorgensen
Lifting and falls comprise a large proportion of work related injuries. Repetitive lifting to the point of fatigue can affect postural sway, which is associated with fall risk. To investigate the effects of lifting and fatigue on postural sway in males and females, 35 participants (18 male, 17 female) were asked to lift a weighted box in sets of 25 lifts at 5 different incremental weights (10, 15, 20, 25, and 30 kg) until fatigue. Before and after each lifting set, participants performed a single leg balance test on a force platform to assess postural sway by means of center of pressure mean velocity...
April 25, 2018: Human Movement Science
Karis M Davis, L Kathleen Sekula
Stigma and discrimination toward overweight and obese people pose consequences to their psychological and physical health. In the United States, overweight and obesity and affects over 34% of the population. This frequently ignored public health issue often sees overweight and obese individuals blamed for their weight, thereby justifying the bias. During a post-sexual-assault examination, sexual assault nurse examiners and other forensic examiners must be cognizant of the specific issues and challenges related to the care of these victims...
April 24, 2018: Journal of Forensic Nursing
Carolina de Oliveira Souza, Mariana Callil Voos, Alessandra Ferreira Barbosa, Janini Chen, Debora Cristina Valente Francato, Matija Milosevic, Milos Popovic, Erich Talamoni Fonoff, Hsin Fen Chien, Egberto Reis Barbosa
This study aimed to evaluate the relationship between posturography, clinical balance, and executive function tests in Parkinson´s disease (PD). Seventy-one people participated in the study. Static posturography evaluated the center of pressure fluctuations in quiet standing and dynamic posturography assessed sit-to-stand, tandem walk, and step over an obstacle. Functional balance was evaluated by Berg Balance Scale, MiniBESTest, and Timed Up and Go test. Executive function was assessed by Trail Making Test (TMT) and semantic verbal fluency test...
April 23, 2018: Journal of Motor Behavior
Li Liu, Hadi Bakhshi, Shaohua Jiang, Holger Schmalz, Seema Agarwal
In this paper, preparation method and actuation properties of an innovative composite membrane composed of thermo- and pH-responsive poly(N-isopropylacrylamide-co-acrylic acid) fibers (average diameter ≈ 905 nm) embedded within a passive thermoplastic polyurethane (TPU) matrix at different angles with degree of alignment as high as 98% are presented. The composite membrane has a gradient of TPU along the thickness. It has the capability of temperature- and pH-dependent direction-, and size-controlled actuation in few minutes...
April 20, 2018: Macromolecular Rapid Communications
Ursula Mirastschijski
In contrast to the concealed penis found in children, the adult buried penis (BP) is associated with obesity or found in patients after massive weight loss. Bariatric patients present with enormous prepubic fat masses into which the penile shaft retracts. As a consequence, urinating problems occur with wetting of the adjacent tissue. Many BP patients are circumcised with recurrence and worsening of the symptoms. In postbariatric patients, the penis is not engulfed into the prepubic tissue. In contrast to highly obese patients, the BP is covered underneath the cutaneous apron...
June 2018: Annals of Plastic Surgery
Ryan T Crews, Joseph Candela
OBJECTIVE: Patient adherence is a challenge in offloading diabetic foot ulcers (DFUs) with removable cast walkers (RCWs). The size and weight of an RCW, changes to gait, and imposed limb length discrepancies may all discourage adherence. This study sought to determine whether RCW size and provision of a contralateral limb lift affected users' comfort and gait. RESEARCH DESIGN AND METHODS: Twenty-five individuals at risk for DFUs completed several 20-m walking trials under five footwear conditions: bilateral standardized shoes, a knee-high RCW with shoe with or without an external shoe lift contralaterally, and an ankle-high RCW with shoe with or without an external shoe lift contralaterally...
April 17, 2018: Diabetes Care
Pedro H Mainardi, Valker A Feitosa, Livia B Brenelli de Paiva, Rafaella C Bonugli-Santos, Fabio M Squina, Adalberto Pessoa, Lara D Sette
Laccase production in saline conditions is still poorly studied. The aim of the present study was to investigate the production of laccase in two different types of bioreactors by the marine-derived basidiomycete Peniophora sp. CBMAI 1063. The highest laccase activity and productivity were obtained in the Stirred Tank (ST) bioreactor, while the highest biomass concentration in Air-lift (AL) bioreactor. The main laccase produced was purified by ion exchange and size exclusion chromatography and appeared to be monomeric with molecular weight of approximately 55 kDa...
May 2018: Fungal Biology
Linpeng Li, Junxing Meng, Chengyi Hou, Qinghong Zhang, Yaogang Li, Hao Yu, Hongzhi Wang
Soft actuators have attracted a lot of attention owing to its biomimetic performance. However, the development of soft actuators that are easily prepared from readily available raw materials, conveniently utilized and cost-efficient is still a challenge. Here, we present a simple method to fabricate a polyethylene-based soft actuator. It has controllable anisotropic structure and can realize multiple motions including bi-directional bending and twisting based on dual mechanisms, which is a rare phenomenon. Especially, the soft actuators can response at a very small temperature difference (ΔT≥2...
April 16, 2018: ACS Applied Materials & Interfaces
Tapas Jaywant Arakeri, Brady A Hasse, Andrew J Fuglevand
A variety of bioengineering systems are being developed to restore tactile sensations in individuals who have lost somatosensory feedback because of spinal cord injury, stroke, or amputation. These systems typically detect tactile force with sensors placed on an insensate hand (or prosthetic hand in the case of amputees) and deliver touch information by electrically or mechanically stimulating sensate skin above the site of injury. Successful object manipulation, however, also requires proprioceptive feedback representing the configuration and movements of the hand and digits...
April 9, 2018: Journal of Neural Engineering
Kehinde J Awosan, Semen S Yikawe, Oche M Oche, Muhammad Oboirien
Background: Low back pain (LBP) is a common cause of disability worldwide. Healthcare workers are particularly prone to it because of the physical and emotional factors associated with their profession. Objectives: To determine the prevalence, perception and correlates of LBP among healthcare workers in tertiary health institutions in Sokoto, Nigeria. Methods: A cross-sectional study was conducted among 320 healthcare workers selected by multistage sampling technique from July to September 2016...
December 2017: Ghana Medical Journal
Flavio H Mendes, Fausto Viterbo, Ana L A P Luna
BACKGROUND: It is reasonable that deflated tissue in massive weight loss patients may demand not only lifting but also some extent of central body tightening, by the fleur-de-lis procedure. Although achieving nice contouring results, poor visible scars, including umbilical complications, have restricted the indications for the anterior vertical approach. The purpose of this article is to present the authors' experience with the inner scar umbilical reconstruction, reflecting overall results in vertical abdominoplasties...
April 2018: Plastic and Reconstructive Surgery
Andrew Sheridan, David C Marchant, Emily L Williams, Hollie S Jones, Phil A Hewitt, S Andy Sparks
Sheridan, A, Marchant, DC, Williams, EL, Jones, HS, Hewitt, PA, and Sparks, SA. Presence of spotters improves bench press performance: a deception study. J Strength Cond Res XX(X): 000-000, 2017-Resistance exercise is a widely used method of physical training in both recreational exercise and athletic populations. The use of training partners and spotters during resistance exercise is widespread, but little is known about the effect of the presence of these individuals on exercise performance. The purpose of the current study was to investigate the effect of spotter presence on bench press performance...
October 24, 2017: Journal of Strength and Conditioning Research
Raffy Mirzayan, Daniel C Acevedo, Jeffrey F Sodl, Edward H Yian, Ronald A Navarro, Oke Anakwenze, Anshuman Singh
BACKGROUND: Distal triceps tendon ruptures are rare. The authors present a series of 184 surgically treated, acute, traumatic triceps tendon avulsions and compare the complications between those treated with anchors (A) versus transosseous (TO) suture repair. HYPOTHESIS: No difference exists in the retear rate between TO and A repairs. Study Designed: Cohort study; Level of evidence, 3. METHODS: All patients who underwent an open primary repair of a traumatic triceps tendon avulsion within 90 days of injury, between 2007 and 2015, were retrospectively reviewed...
March 1, 2018: American Journal of Sports Medicine
Stephanie Weber, Christian Puta, Melanie Lesinski, Brunhild Gabriel, Thomas Steidten, Karl-Jürgen Bär, Marco Herbsleb, Urs Granacher, Holger H W Gabriel
Elite young athletes have to cope with multiple psychological demands such as training volume, mental and physical fatigue, spatial separation of family and friends or time management problems may lead to reduced mental and physical recovery. While normative data regarding symptoms of anxiety and depression for the general population is available (Hinz and Brähler, 2011), hardly any information exists for adolescents in general and young athletes in particular. Therefore, the aim of this study was to assess overall symptoms of anxiety and depression in young athletes as well as possible sex differences...
2018: Frontiers in Physiology
D Rodrigo-Mocholí, E Escudero, E Belda, F G Laredo, V Hernandis, P Marín
AIMS: To determine the pharmacokinetics, and anaesthetic and sedative effects of alfaxalone after I/V and I/M administration to cats. METHODS: Six European shorthair cats, three males and three females, with a mean weight of 4.21 (SD 0.53) kg and aged 3.8 (SD 0.9) years were enrolled in this crossover, two-treatment, two-period study. Alfaxalone at a dose of 5 mg/kg was administrated either I/V or I/M. Blood samples were collected between 2-480 minutes after drug administration and analysed for concentrations of alfaxalone by HPLC...
March 21, 2018: New Zealand Veterinary Journal
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
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