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https://www.readbyqxmd.com/read/28062121/instantaneous-centers-of-rotation-for-lumbar-segmental-extension-in-vivo
#1
Ameet Aiyangar, Liying Zheng, William Anderst, Xudong Zhang
The study aimed to map instantaneous centers of rotation (ICRs) of lumbar motion segments during a functional lifting task and examine differences across segments and variations caused by magnitude of weight lifted. Eleven healthy participants lifted loads of three different magnitudes (4.5, 9, and 13.5kg) from a trunk-flexed (~75°) to an upright position, while being imaged by a dynamic stereo X-ray (DSX) system. Tracked lumbar vertebral (L2-S1) motion data were processed into highly accurate 6DOF intervertebral (L2L3, L3L4, L4L5, L5S1) kinematics...
December 29, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28035624/processing-of-probabilistic-information-in-weight-perception-and-motor-prediction
#2
Leif Trampenau, Thilo van Eimeren, Johann Kuhtz-Buschbeck
We studied the effects of probabilistic cues, i.e., of information of limited certainty, in the context of an action task (GL: grip-lift) and of a perceptual task (WP: weight perception). Normal subjects (n = 22) saw four different probabilistic visual cues, each of which announced the likely weight of an object. In the GL task, the object was grasped and lifted with a pinch grip, and the peak force rates indicated that the grip and load forces were scaled predictively according to the probabilistic information...
December 29, 2016: Attention, Perception & Psychophysics
https://www.readbyqxmd.com/read/28027231/the-lipo-body-lift-a-new-circumferential-body-contouring-technique-useful-after-bariatric-surgery
#3
Nicolas Bertheuil, Benoit Chaput, Antoine De Runz, Paul Girard, Raphael Carloni, Eric Watier
BACKGROUND: After bariatric surgery, lifting of the lower body involves a contouring technique used to achieve optimal lower trunk reconstruction. The authors describe an innovative procedure applicable after massive weight loss: the lipo-body lift method. The authors describe their experience with this novel, safe procedure. METHODS: Twenty-five abdominal body-contouring reconstructions following massive weight loss were treated by means of circumferential lipo-body lift...
January 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28027054/development-of-an-upper-extremity-function-measurement-model
#4
Ickpyo Hong, Annie N Simpson, Chih-Ying Li, Craig A Velozo
This study demonstrated the development of a measurement model for gross upper-extremity function (GUE). The dependent variable was the Rasch calibration of the 27 ICF-GUE test items. The predictors were object weight, lifting distance from floor, carrying, and lifting. Multiple regression was used to investigate the contribution that each independent variable makes to the model with 203 outpatients. Object weight and lifting distance were the only statistically and clinically significant independent variables in the model, accounting for 83% of the variance (p < 0...
2016: Journal of Applied Measurement
https://www.readbyqxmd.com/read/28002278/reply-concomitant-liposuction-reduces-complications-of-vertical-medial-thigh-lift-in-massive-weight-loss-patients
#5
Christopher D Knotts, Joseph P Hunstad
No abstract text is available yet for this article.
December 16, 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28002275/re-complications-of-vertical-medial-thigh-lift-in-massive-weight-loss-patients
#6
Manfred Schmidt, Dominik Duscher, Georg M Huemer
No abstract text is available yet for this article.
December 16, 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27998242/the-effect-of-isolating-the-paretic-limb-on-weight-bearing-distribution-and-emg-activity-during-squats-in-hemiplegic-and-healthy-individuals
#7
Dong-Kyu Lee, Duk-Hyun An, Won-Gyu Yoo, Byong-Yong Hwang, Tae-Ho Kim, Jae-Seop Oh
BACKGROUND: Neural reorganization for movement therapy after a stroke is thought to be an important mechanism that facilitates motor recovery. However, there is a lack of evidence for the effectiveness of exercise programs in improving the lower limbs. OBJECTIVE: We investigated the immediate effect of isolating the paretic limb using different foot positions ((i) foot parallel; both feet parallel, (ii) foot asymmetry; paretic foot backward by 10 cm, and (iii) foot lifting; nonparetic foot lifting by normalization to 25% of knee height) on weight-bearing distribution and electromyography (EMG) of the thigh muscle during squats...
December 21, 2016: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/27984691/-iliacus-muscle-injury-caused-by-inadequate-exercise
#8
J Magaña-Reyes, L G Domínguez-Gasca, A García-Luna, L G Domínguez-Carrillo
BACKGROUND: Traumatic iliacus muscle injury is rare; it is usually caused by trauma or intense exercise involving the pelvic girdle; it can produce a hematoma with femoral nerve neuropathy. Spontaneous muscle hematomas occur in patients with coagulation disorders. CLINICAL CASE: A 45-year-old male with 18 days of evolution, with an intense pain in the right buttock, groin and iliac fossa, with an inability for hip flexion and ambulation caused by inadequate exercise (supine double leg lifts)...
May 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/27983867/roles-of-rfrp-3-in-the-daily-and-seasonal-regulation-of-reproductive-activity-in-female-syrian-hamsters
#9
Jo B Henningsen, Caroline Ancel, Jens D Mikkelsen, François Gauer, Valérie Simonneaux
In females, reproductive activity relies on proper integration of daily and environmental changes as well as cyclic sex-steroid feedback. This study aimed at investigating the role of the hypothalamic Arg-Phe amide-related peptide (RFRP)-3 in the daily and seasonal control of reproductive activity in female Syrian hamsters, by analyzing the RFRP system and investigating the effects of central administration of RFRP-3 at different reproductive stages. In long day-adapted sexually active female hamsters, the number of c-Fos activated RFRP-ir neurons was reduced in the afternoon of diestrus and proestrus, the latter being correlated with increased kisspeptin activity and the LH surge...
December 16, 2016: Endocrinology
https://www.readbyqxmd.com/read/27975003/efficacy-of-autologous-platelet-rich-plasma-glue-in-weight-loss-sequelae-surgery-and-breast-reduction-a-prospective-study
#10
Barbara Hersant, Mounia SidAhmed-Mezi, Simone Lapadula, Jeremy Niddam, Jonathan Bouhassira, Jean Paul Meningaud
BACKGROUND: Seroma and hematoma formations are the most common complications after plastic surgery. The aim of this study was to assess the efficacy of autologous platelet-rich plasma (A-PRP) glue to reduce postoperative wound complications and improve surgical outcomes. METHODS: Fifty-four patients were included in this study. They underwent breast reduction surgery, abdominoplasty, or limb lifting with A-PRP glue application on the entire surface of the subcutaneous tissue at the time of suture...
November 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/27957465/changes-in-back-compressive-force-when-measuring-maximum-acceptable-weight-of-lift-in-iranian-male-students
#11
Ali Salehi Sahl Abadi, Gebraeil Nasl Saraji, Adel Mazloumi, Hojjat Zeraati, Mohammad Reza Hadian, Amir Homayoun Jafari
BACKGROUND: Low back pain caused by work, ranked the second after cardiovascular diseases, are among the most common reasons of patients' referral to the physicians in Iran. This study aimed to determine the changes in back compressive force when measuring maximum acceptable weight of lift in Iranian male students. METHODS: This experimental study was conducted in 2015 on 15 young male students were recruited from Tehran University of Medical Science. Each participant performed 18 different lifting tasks involving three lifting frequencies, with three lifting heights, and two box sizes...
September 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/27940180/the-lifestyle-intervention-for-the-treatment-of-diabetes-study-lift-diabetes-design-and-baseline-characteristics-for-a-randomized-translational-trial-to-improve-control-of-cardiovascular-disease-risk-factors
#12
Jeffrey A Katula, Julienne K Kirk, Carolyn F Pedley, Margaret R Savoca, Valery S Effoe, Ronny A Bell, Alain G Bertoni
The prevalence of type 2 diabetes continues to increase in minority and underserved patients, who are also more likely to have poorer control of diabetes and related risk factors for complications. Although the Look AHEAD trial has demonstrated improved risk factor control among overweight or obese diabetes patients who received an intensive lifestyle intervention, translating such findings into accessible programs is a major public health challenge. The purpose of this paper is to report the design and baseline characteristics of the Lifestyle Interventions for the Treatment of Diabetes study (LIFT Diabetes)...
December 7, 2016: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/27936794/gate-variable-mid-infrared-optical-transitions-in-a-bi1-xsbx-2te3-topological-insulator
#13
William S Whitney, Victor W Brar, Yunbo Ou, Yinming Shao, Artur R Davoyan, D N Basov, Ke He, Qi-Kun Xue, Harry A Atwater
We report mid-infrared spectroscopy measurements of ultrathin, electrostatically gated (Bi1-xSbx)2Te3 topological insulator films in which we observe several percent modulation of transmittance and reflectance as gating shifts the Fermi level. Infrared transmittance measurements of gated films were enabled by use of an epitaxial lift-off method for large-area transfer of topological insulator films from infrared-absorbing SrTiO3 growth substrates to thermal oxidized silicon substrates. We combine these optical experiments with transport measurements and angle-resolved photoemission spectroscopy to identify the observed spectral modulation as a gate-driven transfer of spectral weight between both bulk and 2D topological surface channels and interband and intraband channels...
December 20, 2016: Nano Letters
https://www.readbyqxmd.com/read/27921999/lift-calculations-based-on-accepted-wake-models-for-animal-flight-are-inconsistent-and-sensitive-to-vortex-dynamics
#14
Eric Gutierrez, Daniel B Quinn, Diana D Chin, David Lentink
There are three common methods for calculating the lift generated by a flying animal based on the measured airflow in the wake. However, these methods might not be accurate according to computational and robot-based studies of flapping wings. Here we test this hypothesis for the first time for a slowly flying Pacific parrotlet in still air using stereo particle image velocimetry recorded at 1000 Hz. The bird was trained to fly between two perches through a laser sheet wearing laser safety goggles. We found that the wingtip vortices generated during mid-downstroke advected down and broke up quickly, contradicting the frozen turbulence hypothesis typically assumed in animal flight experiments...
December 6, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27900228/xiphoidectomy-a-surgical-intervention-for-an-underdocumented-disorder
#15
Dirk Pieter Hogerzeil, Klaas Albert Hartholt, Mark Rem de Vries
Two patients who presented with nonspecific thoracic and upper abdominal symptoms and tenderness of the xiphoid process are discussed. Both patients had undergone extensive examinations, but no source for their symptoms could be found. Plain chest radiographs revealed an anterior displacement of the xiphoid process in both patients. Physical examination confirmed this to be the primary source of discomfort. Anterior displacement of the xiphoid process may be the result of significant weight gain. Repeated trauma of the afflicted area, unaccustomed heavy lifting, exercise, and perichondritis are, amongst other causes, believed to contribute to the development of xiphodynia...
2016: Case Reports in Surgery
https://www.readbyqxmd.com/read/27893476/comparison-of-muscle-involvement-and-posture-between-the-conventional-deadlift-and-a-walk-in-style-deadlift-machine
#16
Benjamin J Snyder, Courtney P Cauthen, Scott R Senger
The deadlift exercise is one of the most effective exercises for developing lower-body strength; however, technique errors can lead to low back injuries. The use of a 'walk-in' deadlift machine removes the weight bar by using a lever system with independent handles on either side of the body. Theoretically, this would allow alignment of the load with the center of gravity, encouraging a more upright torso and decreasing the involvement of the low back extensors. This study compared trunk angle, knee angle and electrical activity of key muscles between the conventional deadlift (CDL) and two foot positions (ball of foot or toe alignment) with pronated grip, (called BallPro and ToePro) of a walk-in deadlift machine among high-skilled and low-skilled lifters...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27880779/a-mighty-claw-pinching-force-of-the-coconut-crab-the-largest-terrestrial-crustacean
#17
Shin-Ichiro Oka, Taketeru Tomita, Kei Miyamoto
Crustaceans can exert a greater force using their claws than many animals can with other appendages. Furthermore, in decapods, the chela is a notable organ with multifunctional roles. The coconut crab, Birgus latro, is the largest terrestrial crustacean and has a remarkable ability to lift weights up to approximately 30 kg. However, the pinching force of this crab's chelae has not been previously investigated. In the present study, we measured the pinching force of the chelae in 29 wild coconut crabs (33-2,120 g in body weight)...
2016: PloS One
https://www.readbyqxmd.com/read/27875493/acute-lumbar-paraspinal-myonecrosis-in-football-players-with-sickle-cell-trait-a-case-series
#18
E Randy Eichner, Brock Schnebel, Scott Anderson, James R Clugston, Heath Hale, Charlie Michaudet, John M Small
We report 6 cases of a novel syndrome of acute, exertional low back pain (LBP) in football players, 5 in college and one in the National Football League (NFL). All 6 are African-Americans with sickle cell trait (SCT). The acute LBP is severe and can be disabling, and the condition can be confused with muscle strain, discogenic pain, stress fracture, or other problems in athletes. Our evidence shows that this syndrome is caused by lumbar paraspinal myonecrosis (LPSMN), which likely often contributes to the lumbar paraspinal compartment syndrome...
November 21, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27860135/joint-lavage-followed-by-viscosupplementation-and-triamcinolone-in-patients-with-severe-haemophilic-arthropathy-objective-functional-results
#19
M U Rezende, F R Andrusaitis, R T Silva, E Okazaki, J D A Carneiro, G C Campos, A F Pailo, R Frucchi, T Pasqualin, P R Villaça
INTRODUCTION: Viscosupplementation can improve function in haemophilia patients. Viscosupplementation results can be improved by prior joint lavage and triamcinolone administration. AIM: To objectively assess whether viscosupplementation and associated triamcinolone use in patients with severe haemophilic arthropathy following joint lavage improves force and balance and reduces bleeding events. METHODS: Fourteen patients with haemophilic knee arthritis with and without the involvement of other joints underwent joint lavage and subsequent injections of Hylan G-F20 and triamcinolone into all affected joints...
November 16, 2016: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/27849479/heavy-loads-and-lifting-are-risk-factors-for-musculoskeletal-injuries-in-deployed-female-soldiers
#20
Tanja C Roy, Sara R Piva, Bryan C Christiansen, Jonathan D Lesher, Peter M Doyle, Rachel M Waring, James J Irrgang, Charity G Moore, Teresa L Brininger, Marilyn A Sharp
The purpose of this prospective cohort study was to investigate physical, occupational, and psychosocial risk factors for musculoskeletal injuries (MSI) in deployed female soldiers. Before deployment, participants completed performance testing and surveys and after deployment an additional survey detailing occupational demands and MSI. Data analyzed found 57/160 (36%) suffered 78 MSI. In unadjusted analyses, these factors increased the relative risk (RR, 95% confidence interval) of injury: wearing an average load >10% body weight (BW) (RR = 2...
November 2016: Military Medicine
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