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Functional Hops

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https://www.readbyqxmd.com/read/27904797/preseason-jump-and-hop-measures-in-male-collegiate-basketball-players-an-epidemiologic-report
#1
Jason Brumitt, Amy Engilis, Dale Isaak, Amy Briggs, Alma Mattocks
BACKGROUND: Injuries are inherent in basketball with lower extremity (LE) injury rates reported as high as 11.6 per 1000 athletic exposures (AEs); many of these injuries result in time loss from sport participation. A recent trend in sports medicine research has been the attempt to identify athletes who may be at risk for injury based on measures of preseason fitness. HYPOTHESIS/PURPOSE: The purpose of this prospective cohort study was to determine if the standing long jump (SLJ) and/or the single-leg hop (SLH) for distance functional performance tests (FPT) are associated with non-contact time loss lower quadrant (LQ, defined as lower extremities or low back) injury in collegiate male basketball players...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904796/functional-hop-tests-and-tuck-jump-assessment-scores-between-female-division-i-collegiate-athletes-participating-in-high-versus-low-acl-injury-prone-sports-a-cross-sectional-analysis
#2
Philipp Hoog, Meghan Warren, Craig A Smith, Nicole J Chimera
BACKGROUND: Although functional tests including the single leg hop (SLH), triple hop (TH), cross over hop (COH) for distance, and the tuck jump assessment (TJA) are used for return to play (RTP) criteria for post anterior cruciate ligament (ACL) injury, sport-specific baseline measurements are limited. PURPOSE: The purpose of this study was to examine differences in SLH, TH, and COH distance and limb symmetry index (LSI), as well as total scores, number of jumps, and individual flaws of the TJA in 97 injury-free Division I (DI) collegiate female student athletes participating in ACL injury prone vs...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27900196/muscle-function-is-associated-with-future-patient-reported-outcomes-in-young-adults-with-acl-injury
#3
Vala Flosadottir, Ewa M Roos, Eva Ageberg
BACKGROUND/AIM: Consequences of an anterior cruciate ligament (ACL) injury include worse patient-reported outcomes (PROs) and a decrease in activity level. Muscle function can be improved by targeted exercise. Our aims were to investigate cross-sectional and longitudinal associations among lower extremity muscle function and PROs after ACL injury. METHODS: Fifty-four participants (15 women, mean 30 years) with ACL injury or reconstruction, from the Knee Anterior Cruciate Ligament, Nonsurgical versus Surgical Treatment (KANON) trial (ISRCTN84752559), were assessed with hop performance, muscle power and postural orientation 3 years (SD 0...
2016: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/27893474/hypertrophy-and-explosive-reactive-functioning-in-sedentary-men-following-10-weeks-of-whole-body-vibration
#4
Jens Ebing, Ulf Gast, Christoph Hauptmann, Dieter Felsenberg, Daniel L Belavý
The objective of this study was to determine the impact of vertical (Power-plate; POW) and side-alternating (Galileo; GAL) whole-body vibration exercise on muscle mass and lower-limb neuromuscular function. Forty-three sedentary male subjects (18-30yr) randomized into three groups underwent two upper-body exercise sessions per week for 10 weeks. Two groups of subjects underwent additional squat exercises on the GAL (N=15) or POW (N=14) devices. The third group was control. On magnetic resonance imaging, volume of the thigh muscles was measured...
November 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27886304/how-far-away-are-iron-carbide-clusters-from-the-bulk
#5
Longyan Zheng, Xingchen Liu, Yu Meng, Yuwei Zhou, Wenping Guo, Qing Peng, Yong Yang, Haijun Jiao, Yong-Wang Li, Xiao-Dong Wen
Combining the basin hopping structure searching algorithm and density functional theory, the iron carbide clusters, FexCy (x ≤ 8 and y ≤ 8), and clusters with various stoichiometries (Fe2nCn, Fe3nCn, FenC2n, FenC3n and FenC4n (n = 1-7), Fe5nC2n, and Fe4nCn (n = 1-5)) are predicted. The stable structures of iron rich carbide clusters are composed of C-C dimers or single C atoms on the surface of the clusters, which are remarkably different from their corresponding bulk structures, where the carbon atoms are atomically distributed in the iron matrix...
November 25, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27875261/the-apparently-contradictory-energetics-of-hopping-and-running-the-counter-intuitive-effect-of-constraints-resolves-the-paradox
#6
Anne K Gutmann, John E A Bertram
Metabolic rate appears to increase with rate of force application for running. Leg function during ground contact is similar in hopping and running so one might expect that this relationship would hold for hopping as well. Surprisingly, metabolic rate appeared to decrease with increasing force rate for hopping. However, this paradox is the result of comparing different cross sections of the metabolic cost landscapes for hopping and running. The apparent relationship between metabolic rate and force rate observed in treadmill running is likely not a fundamental characteristic of muscle physiology, but a result of runners responding to speed constraints, i...
November 10, 2016: Journal of Experimental Biology
https://www.readbyqxmd.com/read/27869529/low-fundamental-movement-skill-proficiency-is-associated-with-high-bmi-and-body-fatness-in-girls-but-not-boys-aged-6-11-years-old
#7
Michael J Duncan, Elizabeth Bryant, David Stodden
This study examined differences in children's body mass index (BMI) and body fatness (BF%) as a function of gender and fundamental movement skill (FMS) proficiency. Following ethics approval and parental consent, 248, 6-11 year-old children (112 boys, 136 girls) underwent assessment of 7 FMS: sprint run, side gallop, hop, kick, catch, throw and vertical jump. FMS tertiles ("high", "medium" or "low" FMS) were created based on the summed components of the FMS. Skinfold measures were used to calculate BF%. Physical activity (PA) was assessed using pedometry and maturation predicted using anthropometry...
November 21, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27869257/scaling-relationships-for-nonadiabatic-energy-relaxation-times-in-warm-dense-matter-toward-understanding-the-equation-of-state
#8
Ekadashi Pradhan, Rudolph J Magyar, Alexey V Akimov
Understanding the dynamics of electron-ion energy transfer in warm dense (WD) matter is important to the measurement of equation of state (EOS) properties and for understanding the energy balance in dynamic simulations. In this work, we present a comprehensive investigation of nonadiabatic electron relaxation and thermal excitation dynamics in aluminum under high pressure and temperature. Using quantum-classical trajectory surface hopping approaches, we examine the role of nonadiabatic couplings and electronic decoherence in electron-nuclear energy transfer in WD aluminum...
November 30, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27866154/the-correlation-between-cognitive-and-movement-shifting-and-brain-activity-in-children-with-adhd
#9
Kyoung Doo Kang, Doug Hyun Han, Sun Mi Kim, Sujin Bae, Perry F Renshaw
OBJECTIVE: We assessed the correlation between the deficits of cognition, movement, and brain activity in children with Attention Deficit Hyperactvity Disorder (ADHD). METHOD: We recruited 15 children with ADHD and 15 age- and sex-matched healthy control participants. Clinical symptoms, cognitive shifting, movement shifting, and brain activity were assessed using the Korean ADHD Rating Scale, the Wisconsin Card Sorting Test (WCST), the 7- and 14-ring drill test with hop jumps (7 HJ and 14 HJ), and 3...
November 19, 2016: Journal of Attention Disorders
https://www.readbyqxmd.com/read/27859270/impact-of-pancreatectomy-on-long-term-patient-reported-symptoms-and-quality-of-life-in-recurrence-free-survivors-of-pancreatic-and-periampullary-neoplasms
#10
Jordan M Cloyd, Hop S Tran Cao, Maria Q B Petzel, Jason W Denbo, Nathan H Parker, Graciela M Nogueras-González, Joseph S Liles, Michael P Kim, Jeffrey E Lee, Jean-Nicolas Vauthey, Thomas A Aloia, Jason B Fleming, Matthew H G Katz
BACKGROUND: Long term patient-reported symptoms and quality of life (QOL) are important outcome metrics following cancer operations, but have been poorly described in patients who have previously undergone pancreatectomy. METHODS: We conducted a cross-sectional survey of recurrence-free survivors of pancreatic ductal adenocarcinoma, periampullary carcinomas, and pancreatic neuroendocrine tumors who had undergone prior pancreatectomy. QOL and symptom burden were measured using the Functional Assessment of Cancer Therapy-Hepatobiliary Questionnaire, and psychosocial distress was measured using the Hospital Anxiety and Depression Scale...
November 11, 2016: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/27858459/quantum-domain-walls-induce-incommensurate-supersolid-phase-on-the-anisotropic-triangular-lattice
#11
Xue-Feng Zhang, Shijie Hu, Axel Pelster, Sebastian Eggert
We investigate the extended hard-core Bose-Hubbard model on the triangular lattice as a function of spatial anisotropy with respect to both hopping and nearest-neighbor interaction strength. At half-filling the system can be tuned from decoupled one-dimensional chains to a two-dimensional solid phase with alternating density order by adjusting the anisotropic coupling. At intermediate anisotropy, however, frustration effects dominate and an incommensurate supersolid phase emerges, which is characterized by incommensurate density order as well as an anisotropic superfluid density...
November 4, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27857303/performance-of-multi-hop-parallel-free-space-optical-communication-over-gamma-gamma-fading-channel-with-pointing-errors
#12
Zhengguang Gao, Hongzhan Liu, Xiaoping Ma, Wei Lu
Multi-hop parallel relaying is considered in a free-space optical (FSO) communication system deploying binary phase-shift keying (BPSK) modulation under the combined effects of a gamma-gamma (GG) distribution and misalignment fading. Based on the best path selection criterion, the cumulative distribution function (CDF) of this cooperative random variable is derived. Then the performance of this optical mesh network is analyzed in detail. A Monte Carlo simulation is also conducted to demonstrate the effectiveness of the results for the average bit error rate (ABER) and outage probability...
November 10, 2016: Applied Optics
https://www.readbyqxmd.com/read/27852901/multivalent-rab-interactions-determine-tether-mediated-membrane-fusion
#13
Anna Lürick, Jieqiong Gao, Anne Kuhlee, Erdal Yavavli, Lars Langemeyer, Angela Perz, Stefan Raunser, Christian Ungermann
Membrane fusion at endomembranes requires crosstalk between Rab GTPases and tethers to drive SNARE-mediated lipid bilayer mixing. Several tethers have multiple Rab binding sites with largely untested function. Here, we dissected the lysosomal HOPS complex as a tethering complex with just two binding sites for the Rab7-like Ypt7 protein to determine their relevance for fusion. Using tethering and fusion assays combined with HOPS mutants we show that HOPS-dependent fusion requires both Rab binding sites, with Vps39 being the stronger Ypt7-interactor than Vps41...
November 16, 2016: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/27834590/clinical-effects-of-dry-needling-among-asymptomatic-individuals-with-hamstring-tightness-a-randomized-controlled-trial
#14
Kathleen Geist, Claire Bradley, Alan Hofman, Rob Koester, Fenella Roche, Annalise Shields, Elizabeth Frierson, Ainsley Rossi, Marie Johanson
STUDY DESIGN: Randomized controlled trial. OBJECTIVES: The aim of this study was to determine the effects of dry needling on hamstring extensibility and functional performance tests among asymptomatic individuals with hamstring muscle tightness. BACKGROUND: Dry needling has been shown to increase range of motion in the upper quarter and may have similar effects in the lower quarter. METHODS: Twenty-seven subjects with hamstring extensibility deficits were randomly assigned to side of treatment (dominant or non-dominant) and group (blunt needling or dry needling)...
November 11, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27827487/a-computational-study-on-the-superionic-behaviour-of-tho2
#15
P S Ghosh, A Arya, G K Dey, N Kuganathan, R W Grimes
This study reports the density functional theory (DFT) and classical molecular dynamics (MD) study of the lattice dynamical, mechanical and anionic transport behaviours of ThO2 in the superionic state. DFT calculations of phonon frequencies were performed at different levels of approximation as a function of isotropic dilation (ε) in the lattice parameter. With the expansion of the lattice parameter, there is a softening of B1u and Eu phonon modes at the X symmetry point of the Brillouin zone. As a result of the nonlinear decrease at the X point, the B1u and Eu phonon modes cross each other at ε = 0...
November 9, 2016: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/27816530/structural-basis-of-transport-function-in-major-facilitator-superfamily-protein-from-trichoderma-harzianum
#16
Nitika Chaudhary, Padmani Sandhu, Mushtaq Ahmed, Yusuf Akhter
Trichothecenes are the sesquiterpenes secreted by Trichoderma spp. residing in the rhizosphere. These compounds have been reported to act as plant growth promoters and bio-control agents. The structural knowledge for the transporter proteins of their efflux remained limited. In this study, three-dimensional structure of Thmfs1 protein, a trichothecene transporter from Trichoderma harzianum, was homology modelled and further Molecular Dynamics(MD) simulations were used to decipher its mechanism. Fourteen transmembrane helices of Thmfs1 protein are observed contributing to an inward-open conformation...
November 2, 2016: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/27810430/outcomes-of-surgical-stabilization-in-patients-with-combined-acl-deficiency-and-patellofemoral-instability-a-case-series
#17
Laurie A Hiemstra, Sarah Kerslake, Mark Heard, Gregory Buchko, Mark Lafave
BACKGROUND: The purpose of this study was to assess the disease-specific quality of life, and the objective clinical and functional outcomes of patients with symptomatic ACL deficiency and patellofemoral instability following surgical stabilization of both ligaments. METHODS: Between February 2010 and August 2013, 22 subjects underwent a combined ACL reconstruction and patellofemoral stabilization. The anterior cruciate ligament quality of life questionnaire (ACL-QOL) was completed pre-operatively and two-years post-operatively...
October 31, 2016: Knee
https://www.readbyqxmd.com/read/27809375/ion-isolation-and-multigenerational-collision-induced-dissociation-using-the-inverse-mathieu-q-scan
#18
Dalton T Snyder, R Graham Cooks
RATIONALE: In a bid to develop a mass spectrometer using ac frequency scanning for ion isolation, ion activation, and ion ejection, we have developed scan functions for each process using the inverse Mathieu q scan. METHODS: Ion isolation is accomplished by frequency hopping, that is, by skipping past the ranges of frequencies corresponding to the ions to be isolated during the frequency sweep. Multigenerational collision-induced dissociation is demonstrated by scanning the frequency of excitation from low to high so that multiple generations of product ions can be observed in the product ion mass spectra...
November 3, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/27802796/patients-with-chondrolabral-pathology-have-bilateral-functional-impairments-12-to-24-months-after-unilateral-hip-arthroscopy-a-cross-sectional-study
#19
Joanne L Kemp, May Arna Risberg, Anthony G Schache, Michael Makdissi, Michael G Pritchard, Kay M Crossley
Study Design Cross-sectional study. Background Functional task performance in patients with chondrolabral pathology following hip arthroscopy is unknown. Objectives To investigate in people with chondrolabral pathology following hip arthroscopy (1) the bilateral differences in functional task performance compared to controls, (2) the association of hip muscle strength with functional task performance, and (3) the association of functional task performance scores with good outcome, as measured by International Hip Outcome Tool score...
November 2016: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/27799670/correlation-between-hip-function-and-knee-kinematics-evaluated-by-three-dimensional-motion-analysis-during-lateral-and-medial-side-hopping
#20
Hiromitsu Itoh, Kohei Takiguchi, Yohei Shibata, Satoshi Okubo, Shinichi Yoshiya, Ryosuke Kuroda
[Purpose] Kinematic and kinetic characteristics of the limb during side-hopping and hip/knee interaction during this motion have not been clarified. The purposes of this study were to examine the biomechanical parameters of the knee during side hop and analyze its relationship with clinical measurements of hip function. [Subjects and Methods] Eleven male college rugby players were included. A three-dimensional motion analysis system was used to assess motion characteristics of the knee during side hop. In addition, hip range of motion and muscle strength were evaluated...
September 2016: Journal of Physical Therapy Science
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