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https://www.readbyqxmd.com/read/28900561/effects-of-a-band-loop-on-lower-extremity-muscle-activity-and-kinematics-during-the-barbell-squat
#1
Ryan C A Foley, Brittany D Bulbrook, Duane C Button, Michael W R Holmes
BACKGROUND: Medial knee collapse can signal an underlying movement issue that, if uncorrected, can lead to a variety of knee injuries. Placing a band around the distal thigh may act as a proprioceptive aid to minimize medial collapse of the knee during squats; however, little is known about EMG and biomechanics in trained and untrained individuals during the squat with an elastic band added. HYPOTHESIS/PURPOSE: To investigate the effects of the TheraBand® Band Loop on kinematics and muscle activity of the lower extremity during a standard barbell back squat at different intensities in both trained and untrained individuals...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28894539/prevalence-risk-factors-and-character-of-abdominal-hernia-in-arar-city-northern-saudi-arabia-in-2017
#2
Abdulmajeed AhmedAlenazi, Mahmoud Mohammed Alsharif, Malik Azhar Hussain, Naif Gharbi Alenezi, Abdulrhman Ahmed Alenazi, Shouq Amjad Almadani, Nour Homoud Alanazi, Jazzaa Hammad Alshammari, Alwaleed Oqab Altimyat, Tariq Hulayyil Alanazi
BACKGROUND: Abdominal wall hernias are a very common surgical condition affecting all ages and both sexes. The main risk factors of hernias include pregnancy, weight lifting, constipation, and weight gain. OBJECTIVE: The aim of this study was to determine the prevalence and risk factors of abdominal hernias, their causes, treatment and complications among both sexes of the Arar population (Saudi Arabia). METHODS: A cross-sectional study was conducted among 1,567 adults living in Arar city in 2017...
July 2017: Electronic Physician
https://www.readbyqxmd.com/read/28888899/association-between-body-mass-index-and-individual-characteristics-and-the-school-context-a-multilevel-study-with-portuguese-children
#3
Rafael S Henrique, Thayse N Gomes, Go Tani, José A R Maia
OBJECTIVE: The aim of this study was to examine the association between individual and school context characteristics with the body mass index of Portuguese children. METHODS: The sample comprised 1641 children (847 boys) aged 6-10 years from the North and Central regions of Portugal. Regarding the individual characteristics, age, gender, city of residence, levels of physical activity, and physical fitness were assessed. Concerning the school context characteristics, the surrounding environment, school size, presence of recreational characteristics and space, and presence of a sports court and of physical education classes were considered...
September 7, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28868601/periorbital-emphysema-after-a-wet-chamber-dive
#4
Wei-Shih Tseng, Hui-Chieh Lee, Bor-Hwang Kang
Although periorbital emphysema (PE) is commonly associated with orbital fractures, it may develop without any fracture or significant trauma in circumstances such as post-surgery, infection, forceful nose blowing, sneezing, and weight lifting. We report on a healthy military diver who developed PE following a wet chamber dive. A diagnosis of PE secondary to sinus barotrauma was reached. He was treated conservatively without medication and his symptoms recovered completely within 10 days. To the best of our knowledge, only five cases of diving-related PE have been reported in the literature...
September 2017: Diving and Hyperbaric Medicine: the Journal of the South Pacific Underwater Medicine Society
https://www.readbyqxmd.com/read/28831848/action-and-inaction-in-multi-behavior-recommendations-a-meta-analysis-of-lifestyle-interventions
#5
Dolores Albarracín, Kristina Wilson, Man-Pui Sally Chan, Marta Durantini, Flor Sanchez
This meta-analysis examined theoretical predictions about the effects of different combinations of action (e.g., start an exercise regime) and of inaction (e.g., reduce screen time, rest in between weight lifting series) recommendations in smoking, diet, and physical activity multiple-domain interventions. The synthesis included 150 research reports of interventions promoting multiple behavior domain change and measuring change at the most immediate follow-up. The main outcome measure was an indicator of overall change that combined behavioral and clinical effects...
August 23, 2017: Health Psychology Review
https://www.readbyqxmd.com/read/28828435/thermo-mechanically-responsive-crystalline-organic-cantilever
#6
Madushani Dharmarwardana, Raymond P Welch, Sunah Kwon, Victoria K Nguyen, Gregory T McCandless, Mohammad A Omary, Jeremiah J Gassensmith
We report thermo-mechanically responsive and thermochromic behavior in the single crystalline organic semiconductor butoxyphenyl N-substituted naphthalene diimide (BNDI). We show that initially monoclinic single crystals of BNDI undergo a single-crystal to single-crystal transition to a triclinic phase. This transition accompanies large changes in the crystal packing, a visible decrease in crystal size, reversible thermochromic behavior, and motion including bending, jumping, and splitting. We have shown that by fixing single crystals to a surface, we can harness the energy of the phase transition to create a single crystal cantilever capable of lifting weights with masses nigh two orders of magnitude heavier than the single crystal itself...
August 22, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28813995/a-novel-human-effort-estimation-method-for-knee-assistive-exoskeletons
#7
Lorenzo Saccares, Anais Brygo, Ioannis Sarakoglou, Nikos G Tsagarakis
In this work we present a novel method to estimate online the torques at the knee joints with the goal to generate reference signals for knee assistive devices. One of the main advantages of the proposed approach is its reduced sensing requirements, which leads to an ergonomic setup with minimal instrumentation, especially above the knee and of the upper body. Indeed, only the measurement of the forces and torques exchanged between the ground and the user's feet, the posture of the shanks, and the model of the user's shank itself are needed for the estimation of the knee torque...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813796/feedforward-model-based-arm-weight-compensation-with-the-rehabilitation-robot-armin
#8
Fabian Just, Ozhan Ozen, Stefano Tortora, Robert Riener, Georg Rauter
Highly impaired stroke patients at early stages of recovery are unable to generate enough muscle force to lift the weight of their own arm. Accordingly, task-related training is strongly limited or even impossible. However, as soon as partial or full arm weight support is provided, patients are enabled to perform arm rehabilitation training again throughout an increased workspace. In the literature, the current solutions for providing arm weight support are mostly mechanical. These systems have components that restrict the freedom of movement or entail additional disturbances...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28796622/w-fyd-a-wearable-fabric-based-display-for-haptic-multi-cue-delivery-and-tactile-augmented-reality
#9
Simone Fani, Simone Ciotti, Edoardo Battaglia, Alessandro Moscatelli, Matteo Bianchi
Despite the importance of softness, there is no evidence of wearable haptic systems able to deliver controllable softness cues. Here, we present the Wearable Fabric Yielding Display (W-FYD), a fabric-based display for multi-cue delivery that can be worn on user's finger and enables, for the first time, both active and passive softness exploration. It can also induce a sliding effect under the finger-pad. A given stiffness profile can be obtained by modulating the stretching state of the fabric through two motors...
August 7, 2017: IEEE Transactions on Haptics
https://www.readbyqxmd.com/read/28795676/-design-and-application-of-medical-electric-leg-raising-machine
#10
Jintang Liang, Jinyuan Chen, Zixian Zhao, Jinfeng Lin, Juanhong Li, Jingliang Zhong
Passive leg raising is widely used in clinic, but it lacks of specialized mechanical raise equipment. It requires medical staff to raise leg by hand or requires a multi-functional bed to raise leg, which takes time and effort. Therefore we have developed a new medical electric leg-raising machine. The equipment has the following characteristics: simple structure, stable performance, easy operation, fast and effective, safe and comfortable. The height range of the lifter is 50-120 cm, the range of the angle of raising leg is 10degree angle-80degree angle, the maximum supporting weight is 40 kg...
August 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28795675/-clinical-application-of-abdominal-lifting-and-compression-cardiopulmonary-resuscitation-method-for-treatment-of-patients-with-cardiac-arrest
#11
Haishan Li, Liu Ji, Jingjing Wang
OBJECTIVE: To investigate the clinical application of rhythmic abdominal lifting and compression cardiopulmonary resuscitation (ALC-CPR) in cardiac arrest (CA) patients with conventional cardiopulmonary resuscitation (CPR) contraindication (chest rib fracture, chest trauma, etc.). METHODS: The clinical data of patients with CA in emergency department of Hefei Second People's Hospital from June 2015 to December 2016 were analyzed retrospectively, and the patients with weights 40-150 kg and CA≤20 minutes, and resuscitated with ALC-CPR were selected...
August 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28780816/-evaluation-of-upper-limb-load-intensity-based-on-biomechanical-methods
#12
H Li, F Li, Q Yan, Z Wang, C H Wang
Objective: To establish a model for evaluating the upper limb load intensity of workers based on biomechanical methods, and to verify its effectiveness. Methods: 15 male volunteers participated in lifting test of 3 kinds of external force load in March 2015. Volunteers' operating postures, forces, and subjective load intensities were collected. The biomechanical models of lifting operation were established with the input of operating postures and forces, and to output joint torque of shoulder, elbow and wrist...
June 20, 2017: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28772392/numerical-prediction-of-the-mechanical-failure-of-the-intervertebral-disc-under-complex-loading-conditions
#13
Gloria Casaroli, Tomaso Villa, Tito Bassani, Nikolaus Berger-Roscher, Hans-Joachim Wilke, Fabio Galbusera
Finite element modeling has been widely used to simulate the mechanical behavior of the intervertebral disc. Previous models have been generally limited to the prediction of the disc behavior under simple loading conditions, thus neglecting its response to complex loads, which may induce its failure. The aim of this study was to generate a finite element model of the ovine lumbar intervertebral disc, in which the annulus was characterized by an anisotropic hyperelastic formulation, and to use it to define which mechanical condition was unsafe for the disc...
January 3, 2017: Materials
https://www.readbyqxmd.com/read/28769100/resistance-training-alone-reduces-systolic-and-diastolic-blood-pressure-in-prehypertensive-and-hypertensive-individuals-meta-analysis
#14
Evitom Corrêa de Sousa, Odilon Abrahin, Ana Lorena Lima Ferreira, Rejane Pequeno Rodrigues, Erik Artur Cortinhas Alves, Rodolfo Paula Vieira
The purpose of this study was to evaluate the effects of resistance training alone on the systolic and diastolic blood pressure in prehypertensive and hypertensive individuals. Our meta-analysis, followed the guidelines of PRISMA. The search for articles was realized by November 2016 using the following electronic databases: BIREME, PubMed, Cochrane Library, LILACS and SciELO and a search strategy that included the combination of titles of medical affairs and terms of free text to the key concepts: 'hypertension' 'hypertensive', 'prehypertensive', 'resistance training', 'strength training', and 'weight-lifting'...
August 3, 2017: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/28768671/paget-schroetter-syndrome-complicated-by-an-incidental-pulmonary-embolism
#15
Jakub Kaczynski, Joseph Sathiananthan
A young man presented with the severe right upper limb swelling following a heavy weight lifting that was thought to be caused by a biceps tendon rupture. However, subsequent investigations confirmed the diagnosis of Paget-Schroetter syndrome that was associated with an incidental pulmonary embolism. The patient underwent a successful thrombolysis followed by a surgical thoracic outlet decompression. Overall, the patient has made a good recovery.
August 2, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28768509/assessment-of-potential-risk-factors-for-new-onset-disabling-low-back-pain-in-japanese-workers-findings-from-the-cupid-cultural-and-psychosocial-influences-on-disability-study
#16
Mika Kawaguchi, Ko Matsudaira, Takayuki Sawada, Tadashi Koga, Akiko Ishizuka, Tatsuya Isomura, David Coggon
BACKGROUND: Most studies of risk factors for new low back pain (LBP) have been conducted in Western populations, but because of cultural and environmental differences, the impact of causal factors may not be the same in other countries. We used longitudinal data from the Cultural and Psychosocial Influences on Disability (CUPID) study to assess risk factors for new onset of disabling LBP among Japanese workers. METHODS: Data came from a 1-year prospective follow-up of nurses, office workers, sales/marketing personnel, and transportation workers, initially aged 20-59 years, who were employed in or near Tokyo...
August 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28764760/does-weight-lifting-improve-visual-acuity-a-replication-of-gonzalo-fonrodona-and-porras-2013
#17
Fumiya Yonemitsu, Yubin Sung, Kyoko Naka, Yuki Yamada, Fernando Marmolejo-Ramos
OBJECTIVE: A physical effort such as lifting up a weight affects our perception and cognition. A previous study reported in two experiments that weight lifting improves visual acuity. In the previous study, participants' visual acuity was higher while lifting weights than while resting. Moreover, via a case study, that study further showed that the heavier the weight, the better the visual acuity. These experiments, although interesting, lacked methodological details and thorough statistical analyses...
August 1, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28753120/dynamic-analysis-of-forces-in-the-lumbar-spine-during-bag-carrying
#18
Lessby Gómez, Carlos A Díaz, Gustavo A Orozco, José J García
OBJECTIVE: The intervertebral disc supports axial and shear forces generated during tasks such as lifting and carrying weights. The objective of this study was to determine the forces in the lumbar spine of workers carrying a bag on the head, on the shoulder and on the anterior part of the trunk. METHODS: Kinematic measurements were recorded for 10 subjects carrying bags of 10, 20 and 25 kg on each of the three aforementioned positions. A simple dynamic model implemented in a custom program was then developed to determine the lumbar forces using the accelerations and positions obtained from the kinematic analysis...
September 7, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28727649/variables-affecting-intra-abdominal-pressure-during-lifting-in-the-early-postpartum-period
#19
Yvonne Hsu, Robert Hitchcock, Stefan Niederauer, Ingrid E Nygaard, Janet M Shaw, Xiaoming Sheng
OBJECTIVES: Intra-abdominal pressure (IAP) may contribute to pelvic floor health, although the direction and magnitude of such an effect, if any, are not yet known. Identifying individual characteristics, and in particular modifiable factors, associated with higher IAP during recovery from vaginal childbirth might serve to mitigate early pelvic floor dysfunction. The aim of this study was to identify characteristics associated with maximal IAP during lifting in postpartum primiparous women who delivered vaginally...
July 20, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28723817/a-systematic-review-of-the-effects-of-resistance-training-on-body-image
#20
Nicholas J SantaBarbara, James W Whitworth, Joseph T Ciccolo
The purpose of this systematic review was to identify and appraise the literature that has specifically tested the independent effects of resistance training (i.e., weight lifting) on body image in adults. A comprehensive search through December 2016 of electronic databases PubMed, Scopus, PsycNET, and Web of Science for relevant studies published in peer-reviewed journals was conducted, and PRISMA guidelines were followed. Inclusion criteria were that a study had to be: a) written in English; b) published in a peer-reviewed journal; c) conducted an assessment of body image using a validated scale before and after a stand-alone resistance training intervention (i...
July 17, 2017: Journal of Strength and Conditioning Research
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