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https://www.readbyqxmd.com/read/29435790/randomized-controlled-trial-of-amigo%C3%A2-robotically-controlled-versus-manually-controlled-ablation-of-the-cavo-tricuspid-isthmus-using-a-contact-force-ablation-catheter
#1
Kurt S Hoffmayer, Felix Krainski, Sanjay Shah, Jessica Hunter, Maylene Alegre, Jonathan C Hsu, Gregory K Feld
BACKGROUND: Radiofrequency catheter ablation (RFCA) of the cavo-tricuspid isthmus (CTI) is a common treatment for atrial flutter (AFL). However, achieving bi-directional CTI conduction block may be difficult, partly due to catheter instability. OBJECTIVE: To evaluate the safety and efficacy of the Amigo® Remote Catheter System (RCS) compared to manual catheter manipulation, during CTI ablation for AFL. METHODS: Fifty patients (pts) were prospectively randomized to robotically (25 pts) versus manually (25 pts) controlled catheter manipulation during CTI ablation, using a force-contact sensing, irrigated ablation catheter...
February 12, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29427304/police-and-mental-health-responses-to-mental-health-crisis-in-the-waikato-region-of-new-zealand
#2
Graham Holman, Anthony John O'Brien, Katey Thom
New Zealand police report a high level of involvement with people in mental health crisis, something that has been reported in the international literature in recent decades. Involvement of police represents a coercive pathway to care and is likely to be associated with use of force. The aim of this study was to investigate the clinical, legal, and social characteristics of individuals subject to police response in the Waikato region of New Zealand. Data were also collected on characteristics of police response, including use of force, time of day, and disposition...
February 10, 2018: International Journal of Mental Health Nursing
https://www.readbyqxmd.com/read/29387636/the-time-has-come-to-incorporate-a-greater-focus-on-rate-of-force-development-training-in-the-sports-injury-rehabilitation-process
#3
REVIEW
Matthew Buckthorpe, Giulio Sergio Roi
This narrative and literature review discusses the relevance of Rate of Force Development (RFD) (the slope of the force time curve) for Return To Sport (RTS), its determinants and the influence of training practices on it expression, with the purpose to enhance clinicians' awareness of how RFD training may enhance RTS success. RFD is considered functionally more relevant than maximal muscle strength during certain very fast actions including rapid joint stabilisation following mechanical perturbation. Deficits in RFD are reported following conventional rehabilitation programmes despite full restoration of maximal strength, which may contribute to the less than satisfactory RTS outcomes reported in the literature...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29385000/effect-of-low-pass-filtering-on-isometric-mid-thigh-pull-kinetics
#4
Thomas Dos'Santos, Jason Lake, Paul A Jones, Paul Comfort
The purpose of this study was to investigate the effect of low-pass filtering on isometric mid-thigh pull (IMTP) kinetics, including body weight (BW), onset threshold force, time-specific force values (50, 100, 150 and 200 ms) and peak force (PF). Forty IMTP trials from twenty-four collegiate athletes (age: 21.2 ± 1.8 years, height: 1.72 ± 0.09 m, mass: 79.4 ± 8.2 kg) were analyzed and compared using unfiltered (UF) and low-pass filtered (LPF) (Fourth-order Butterworth) with cut-off frequencies of 10 (LPF10) and 100 (LPF100) Hz...
January 29, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29381394/validation-of-a-booted-finite-element-model-of-the-wiaman-atd-lower-limb-in-component-and-whole-body-vertical-loading-impacts-with-an-assessment-of-the-boot-influence-model-on-response
#5
Wade A Baker, Mostafiz R Chowdhury, Costin Untaroiu
OBJECTIVE: A novel anthropomorphic test device (ATD) representative of the 50th percentile male soldier is being developed to predict injuries to a vehicle occupant during an under-body blast (UBB). The main objective of this study was to develop and validate a finite element (FE) model of the ATD lower limb outfitted with a military combat boot. Secondly, to insert the validated lower-limb into a model of the full ATD and simulate vertical loading experiments. METHODS: A Belleville desert combat boot model was assigned contacts and material properties based on previous experiments...
January 30, 2018: Traffic Injury Prevention
https://www.readbyqxmd.com/read/29378865/saliency-detection-as-a-reactive-process-unexpected-sensory-events-evoke-cortico-muscular-coupling
#6
G Novembre, V M Pawar, R J Bufacchi, M Kilintari, M A Srinivasan, J C Rothwell, P Haggard, G D Iannetti
Survival in a fast-changing environment requires animals not only to detect unexpected sensory events, but also to react. In humans, these salient sensory events generate large electrocortical responses, which have been traditionally interpreted within the sensory domain. Here we describe a basic physiological mechanism coupling saliency-related cortical responses with motor output. In four experiments conducted on 70 healthy participants, we show that salient sub-startle sensory stimuli modulate isometric force exertion by human participants, and that this modulation is tightly coupled with electrocortical activity elicited by the same stimuli...
January 29, 2018: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29374967/association-between-second-metatarsal-length-and-forefoot-loading-under-the-second-metatarsophalangeal-joint
#7
Adam E Fleischer, Shenche Hshieh, Ryan T Crews, Brett J Waverly, Jacob M Jones, Erin E Klein, Lowell Weil, Lowell Scott Weil
BACKGROUND: Metatarsal length is believed to play a role in plantar plate dysfunction, although the mechanism through which progressive injury occurs is still uncertain. We aimed to clarify whether length of the second metatarsal was associated with increased plantar pressure measurements in the forefoot while walking. METHODS: Weightbearing radiographs and corresponding pedobarographic data from 100 patients in our practice walking without a limp were retrospectively reviewed...
January 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29360677/asymmetries-in-isometric-force-time-characteristics-are-not-detrimental-to-change-of-direction-speed
#8
Thomas DosʼSantos, Christopher Thomas, Paul A Jones, Paul Comfort
Dos'Santos, T, Thomas, C, Jones, PA, and Comfort, P. Asymmetries in isometric force-time characteristics are not detrimental to change of direction speed. J Strength Cond Res 32(2): 520-527, 2018-The purpose of this study was to determine the impact of between-limb asymmetries in isometric midthigh pull (IMTP) force-time characteristics on change of direction speed (CODS). Twenty multisport collegiate athletes (mean ± SD: age: 21.0 ± 1.9 years; mass: 78.7 ± 8.9 kg; and height: 1.77 ± 0.04 m) performed 3 unilateral stance IMTP trials per limb and 3 modified 505 CODS trials each side to establish imbalances between left and right and dominant (D) and nondominant (ND) limbs...
February 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29347536/force-fluctuations-on-a-wall-in-interaction-with-a-granular-lid-driven-cavity-flow
#9
François Kneib, Thierry Faug, Gilles Nicolet, Nicolas Eckert, Mohamed Naaim, Frédéric Dufour
The force fluctuations experienced by a boundary wall subjected to a lid-driven cavity flow are investigated by means of numerical simulations based on the discrete-element method. The time-averaged dynamics inside the cavity volume and the resulting steady force on the wall are governed by the boundary macroscopic inertial number, the latter being derived from the shearing velocity and the confinement pressure imposed at the top. The force fluctuations are quantified through measuring both the autocorrelation of force time series and the distributions of grain-wall forces, at distinct spatial scales from particle scale to wall scale...
October 2017: Physical Review. E
https://www.readbyqxmd.com/read/29345381/durable-lesion-formation-while-avoiding-esophageal-injury-during-ablation-of-atrial-fibrillation-lessons-learned-from-late-gadolinium-mr-imaging
#10
Mihail G Chelu, Alan K Morris, Eugene G Kholmovski, Jordan B King, Gagandeep Kaur, Michelle A Silver, Joshua E Cates, Frederick T Han, Nassir F Marrouche
INTRODUCTION: Adequate catheter/atrial tissue contact is critical for lesion formation during radiofrequency (RF) ablation of atrial fibrillation (AF). Late gadolinium enhancement magnetic resonance imaging (LGE-MRI) is a unique tool for the evaluation of lesion formation and detection of acute esophageal injury. METHODS: LGE-MRIs were obtained prior, within 24 hours of, and at 115±62 days after first AF ablation in 36 patients. The Visitag module of CARTO3 was used to collect contact force (CF) and duration from a CF sensing ablation catheter for each registered ablation point...
January 18, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29281133/the-impact-of-strength-level-on-adaptations-to-combined-weightlifting-plyometric-and-ballistic-training
#11
Lachlan P James, G Gregory Haff, Vincent G Kelly, Mark Connick, Ben Hoffman, Emma M Beckman
The purpose of this investigation was to determine if the magnitude of adaptation to integrated ballistic training is influenced by initial strength level. Such information is needed to inform resistance training guidelines for both higher- and lower-level athlete populations. To this end, two groups of distinctly different strength levels (stronger: one-repetition-maximum (1RM) squat = 2.01 ± 0.15 kg. BM-1 ; weaker: 1.20 ± 0.20 kg. BM-1 ) completed 10 weeks of resistance training incorporating weightlifting derivatives, plyometric actions and ballistic exercises...
December 27, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29238187/hand-grip-endurance-test-relates-to-clinical-state-and-prognosis-in-copd-patients-better-than-6-minute-walk-test-distance
#12
Miroslav Kovarik, Vera Joskova, Anna Patkova, Vladimir Koblizek, Zdenek Zadak, Miloslav Hronek
Purpose: Patients with COPD present peripheral muscle dysfunction and atrophy, expressed as muscle strength and endurance reduction. The goal of this study was direct dynamometric assessment of hand grip endurance and strength in relation to the stage of disease, multidimensional predictors of mortality, and 6-minute walk test (6MWT). To the best of our knowledge, there has been no previous study determining these parameters. Patients and methods: In this observational study, 58 consecutive outpatients with stable COPD and 25 volunteers without respiratory problems were compared...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/29228043/novel-systems-for-the-application-of-isolated-tensile-compressive-and-shearing-stimulation-of-distraction-callus-tissue
#13
Nicholaus Meyers, Julian Schülke, Anita Ignatius, Lutz Claes
BACKGROUND: Distraction osteogenesis is a procedure widely used for the correction of large bone defects. However, a high complication rate persists, likely due to insufficient stability during maturation. Numerical fracture healing models predict bone regeneration under different mechanical conditions allowing fixation stiffness optimization. However, most models apply a linear elastic material law inappropriate for the transient stresses/strains present during limb lengthening or segment transport...
2017: PloS One
https://www.readbyqxmd.com/read/29166832/conditioning-exercises-in-ski-jumping-biomechanical-relationship-of-squat-jumps-imitation-jumps-and-hill-jumps
#14
Silvio Lorenzetti, Fabian Ammann, Sabrina Windmüller, Ramona Häberle, Sören Müller, Micah Gross, Michael Plüss, Stefan Plüss, Berni Schödler, Klaus Hübner
As hill jumps are very time-consuming, ski jumping athletes often perform various imitation jumps during training. The performed jumps should be similar to hill jumps, but a direct comparison of the kinetic and kinematic parameters has not been performed yet. Therefore, this study aimed to correlate 11 common parameters during hill jumps (Oberstdorf Germany), squat jumps (wearing indoor shoes), and various imitation jumps (rolling 4°, rolling flat, static; jumping equipment or indoor shoes) on a custom-built instrumented vehicle with a catch by the coach...
November 22, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29122191/identifying-interactive-effects-of-task-demands-in-lifting-on-estimates-of-in-vivo-low-back-joint-loads
#15
Chad E Gooyers, Tyson A C Beach, David M Frost, Samuel J Howarth, Jack P Callaghan
This investigation examined interactions between the magnitude of external load, movement speed and (a)symmetry of load placement on estimates of in vivo joint loading in the lumbar spine during simulated occupational lifting. Thirty-two participants with manual materials handling experience were included in the study. Three-dimensional motion data, ground reaction forces, and activation of six bilateral trunk muscle groups were captured while participants performed lifts with two loads at two movement speeds and using two load locations...
February 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29120979/asymmetries-in-isometric-force-time-charcteristics-are-not-detrimental-to-change-of-direction-speed
#16
Thomas Dos'Santos, Christopher Thomas, Paul A Jones, Paul Comfort
The purpose of this study was to determine the impact of between limb asymmetries in IMTP force-time characteristics on change of direction speed (CODS). Twenty multisport collegiate athletes (mean ± SD: age: 21.0 ± 1.9 years; mass: 78.7 ± 8.9 kg; height: 1.77 ± 0.04 m) performed three unilateral stance IMTP trials per limb and three modified 505 CODS trials each side to establish imbalances between left and right, and dominant (D) and non-dominant (ND) limbs. Limb dominance was defined as the limb that produced the highest isometric force-time value or faster CODS performance...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29102650/safety-and-feasibility-of-atrial-fibrillation-ablation-using-amigo-%C3%A2-system-versus-manual-approach-a-pilot-study
#17
Antonio Scarà, Luigi Sciarra, Ermenegildo De Ruvo, Alessio Borrelli, Domenico Grieco, Zefferino Palamà, Paolo Golia, Lucia De Luca, Marco Rebecchi, Leonardo Calò
BACKGROUND: The Amigo(®) Remote Catheter System is a relatively new robotic system for catheter navigation. This study compared feasibility and safety using Amigo (RCM) versus manual catheter manipulation (MCM) to treat paroxysmal atrial fibrillation (PAF). Contact force (CF) and force-time integral (FTI) values obtained during pulmonary vein isolation (PVI) ablation were compared. METHODS: Forty patients were randomly selected for either RCM (20) or MCM (20). All were studied with the Thermocool(®) SmartTouch(®) force-sensing catheter (STc)...
November 1, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29098885/formulation-strategy-towards-minimizing-viscosity-mediated-negative-food-effect-on-disintegration-and-dissolution-of-immediate-release-tablets
#18
Kamran Zaheer, Peter Langguth
Food induced viscosity can delay disintegration and subsequent release of API from solid dosage form which may lead to severe reduction in the bioavailability of BCS type III compounds. Formulations of such tablets need to be optimized in view of this postprandial viscosity factor. In this study, three super disintegrants, croscarmellose sodium (CCS), cross-linked polyvinylpolypyrrolidone (CPD) and sodium starch glycolate (SSG) were assessed for their efficiency under simulated fed state. Tablets containing these disintegrants were compressed at 10 KN and 30 KN, while taking lactose as a soluble filler...
November 3, 2017: Drug Development and Industrial Pharmacy
https://www.readbyqxmd.com/read/29063714/factorization-of-force-and-timing-in-sensorimotor-performance-long-range-correlation-properties-of-two-different-task-goals
#19
Ramesh Balasubramaniam, Michael J Hove, Butovens Médé
Long-range correlations are often manifested in the form of 1/f(β) noise in a series of repeated measurements of the same neural or behavioral variable. Recent work has demonstrated that the magnitude and nature of these long-range correlations reliably capture individual differences and variation in task performance. In sensorimotor timing experiments, task characteristics such as tapping or circle drawing affect these long-range correlations during the production of isochronous time intervals. Such correlations are highly reproducible across multiple trials for the same task but do not correlate between tasks...
October 24, 2017: Topics in Cognitive Science
https://www.readbyqxmd.com/read/29045317/the-relationships-between-height-arm-length-and-leg-length-on-the-mechanics-of-the-conventional-and-high-handle-hexagonal-bar-deadlift
#20
Robert G Lockie, Matthew R Moreno, Ashley J Orjalo, Adrina Lazar, Tricia M Liu, Alyssa A Stage, Samantha A Birmingham-Babauta, John J Stokes, Dominic V Giuliano, Fabrice G Risso, DeShaun L Davis, Samuel J Callaghan
The study investigated relationships between arm (AL) and leg length (LL) and conventional deadlift (CD) and high-handle hexagonal bar deadlift (HHBD) mechanics. Twenty-three resistance-trained subjects (14 males, 9 females) completed a one-repetition maximum (1RM) CD and HHBD. A linear position transducer was used to measure: lift distance and duration; peak and mean power, velocity, and force; time to peak power and velocity; and work. Right AL and LL were measured, and AL-to-LL ratio (AL:LL) was also calculated...
October 16, 2017: Journal of Strength and Conditioning Research
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