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https://www.readbyqxmd.com/read/28101776/plyometric-exercise-and-bone-health-in-children-and-adolescents-a-systematic-review
#1
REVIEW
Alejandro Gómez-Bruton, Ángel Matute-Llorente, Alejandro González-Agüero, José A Casajús, Germán Vicente-Rodríguez
BACKGROUND: Many jumping interventions have been performed in children and adolescents in order to improve bone-related variables and thus, ensure a healthy bone development during these periods and later in life. This systematic review aims to summarize and update present knowledge regarding the effects that jumping interventions may have on bone mass, structure and metabolism in order to ascertain the efficacy and durability (duration of the effects caused by the intervention) of the interventions...
January 19, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28100788/genomic-infectious-disease-epidemiology-in-partially-sampled-and-ongoing-outbreaks
#2
Xavier Didelot, Christophe Fraser, Jennifer Gardy, Caroline Colijn
Genomic data is increasingly being used to understand infectious disease epidemiology. Isolates from a given outbreak are sequenced, and the patterns of shared variation are used to infer which isolates within the outbreak are most closely related to each other. Unfortunately, the phylogenetic trees typically used to represent this variation are not directly informative about who infected whom - a phylogenetic tree is not a transmission tree. However, a transmission tree can be inferred from a phylogeny while accounting for within-host genetic diversity by colouring the branches of a phylogeny according to which host those branches were in...
January 18, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28095813/vocational-rehabilitation-for-adults-with-psychotic-disorders-in-a-scandinavian-welfare-society
#3
Erik Falkum, Ole Klungsøyr, June Ullevoldsæter Lystad, Helen Christine Bull, Stig Evensen, Egil W Martinsen, Svein Friis, Torill Ueland
BACKGROUND: This study examined the outcomes of a vocational rehabilitation program (The Job Management Program, JUMP) for persons with psychotic disorders based on close collaboration between health and welfare services. METHODS: Participants (N = 148) with broad schizophrenia spectrum disorders (age 18-65) were recruited from six counties in Norway. Three counties were randomized to vocational rehabilitation augmented with cognitive behaviour therapy (CBT), while the remaining three counties were randomized to vocational rehabilitation augmented with cognitive remediation (CR)...
January 17, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28095108/the-relationship-between-2d-knee-valgus-angle-during-single-leg-squat-single-leg-land-and-drop-jump-screening-tests
#4
Allan Munro, Lee Herrington, Paul Comfort
CONTEXT: Anterior Cruciate Ligament (ACL) and Patellofemoral Joint (PFJ) injuries are a significant problem among female athletes. A number of screening tasks have been used in the literature to identify those at greatest risk of injury. To date, no study has examined the relationship in two-dimensional (2D) knee valgus between common screening tasks to determine whether individuals exhibit similar movement patterns across tasks. OBJECTIVE: to establish whether frontal plane projection angle (FPPA) during the single leg squat (SLS), single leg land (SLL) and drop jump (DJ) are related...
January 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28094317/data-mining-of-molecular-dynamics-data-reveals-li-diffusion-characteristics-in-garnet-li7la3zr2o12
#5
Chi Chen, Ziheng Lu, Francesco Ciucci
Understanding Li diffusion in solid conductors is essential for the next generation Li batteries. Here we show that density-based clustering of the trajectories computed using molecular dynamics simulations helps elucidate the Li diffusion mechanism within the Li7La3Zr2O12 (LLZO) crystal lattice. This unsupervised learning method recognizes lattice sites, is able to give the site type, and can identify Li hopping events. Results show that, while the cubic LLZO has a much higher hopping rate compared to its tetragonal counterpart, most of the Li hops in the cubic LLZO do not contribute to the diffusivity due to the dominance of back-and-forth type jumps...
January 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28092056/a-randomised-placebo-controlled-crossover-study-investigating-the-effects-of-nicotine-gum-on-strength-power-and-anaerobic-performance-in-nicotine-na%C3%A3-ve-active-males
#6
Toby Mündel, Marine Machal, Darryl J Cochrane, Matthew J Barnes
BACKGROUND: Nicotine use amongst athletes is high and increasing, especially team sports, yet the limited previous studies investigating the performance consequences of this behaviour have not examined the effects of the principal active ingredient, nicotine, per se. Therefore, we determined whether nicotine gum affected muscular and anaerobic performance. METHODS: Nine active males (24 ± 3 years) completed three trials in a random order in which 20 min prior to testing they chewed 2 mg (NIC-2), 4 mg (NIC-4) nicotine or flavour-matched placebo (PLA) gum...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28079028/observation-of-ultrasharp-metamagnetic-jumps-in-polycrystalline-er2cu2o5
#7
Anupam Banerjee, Jhuma Sannigrahi, Saurav Giri, Subham Majumdar
The observation of ultrasharp metamagnetic jumps in the field variation of magnetization ($M$ versus $H$) data of the highly insulating metal oxide Er$_2$Cu$_2$O$_5$ is investigated. The compound orders antiferromagnetically below about $T_{N1}$ = 28 K and shows conventional `not-so-sharp' metamagnetism around 13 kOe on the field increasing leg in the polycrystalline sample. The uniqueness of the ultrasharp jumps in Er$_2$Cu$_2$O$_5$ is that it is only observed in the field decreasing segment of the magnetization curve...
January 12, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28078337/a-solvable-model-of-axisymmetric-and-non-axisymmetric-droplet-bouncing
#8
Matthew Andrew, Julia M Yeomans, Dmitri O Pushkin
We introduce a solvable Lagrangian model for droplet bouncing. The model predicts that, for an axisymmetric drop, the contact time decreases to a constant value with increasing Weber number, in qualitative agreement with experiments, because the system is well approximated as a simple harmonic oscillator. We introduce asymmetries in the velocity, initial droplet shape, and contact line drag acting on the droplet and show that asymmetry can often lead to a reduced contact time and lift-off in an elongated shape...
January 12, 2017: Soft Matter
https://www.readbyqxmd.com/read/28072488/the-influence-of-memory-sample-size-effects-and-filter-paper-material-on-online-laser-based-plant-and-soil-water-isotope-measurements
#9
Jiangpeng Cui, Lide Tian, Cynthia Gerlein-Safdi, Dongmei Qu
RATIONALE: The recent development of isotope ratio infrared spectroscopy (IRIS) was quickly followed by the addition of online extraction and analysis systems, making it faster and easier to measure soil and plant water isotopes. However, memory and sample size effects limit the efficiency and accuracy of these new setups. In response, this study presents a scheme dedicated to estimating and eliminating these two effects. METHODS: Memory effect was determined by injecting two standard waters alternately...
January 10, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28070922/an-open-label-randomized-control-trial-of-hopping-and-jumping-training-versus-sensorimotor-rehabilitation-programme-on-postural-capacities-in-individuals-with-intellectual-disabilities
#10
Rihab Borji, Sonia Sahli, Rym Baccouch, Rabeb Laatar, Hiba Kachouri, Haithem Rebai
BACKGROUND: This study aimed to compare the effectiveness of a hopping and jumping training programme (HJP) versus a sensorimotor rehabilitation programme (SRP) on postural performances in children with intellectual disability. METHODS: Three groups of children with intellectual disability participated in the study: the HJP group, the SRP group and a control group. Postural capacities were tested with the Berg Balance Scale (BBS) and the Tinetti tests. The HJP and the SRP groups participated in the training programmes for eight weeks...
January 10, 2017: Journal of Applied Research in Intellectual Disabilities: JARID
https://www.readbyqxmd.com/read/28060927/acute-effects-of-three-neuromuscular-warm-up-strategies-on-several-physical-performance-measures-in-football-players
#11
Francisco Ayala, Ana Calderón-López, Juan Carlos Delgado-Gosálbez, Sergio Parra-Sánchez, Carlos Pomares-Noguera, Sergio Hernández-Sánchez, Alejandro López-Valenciano, Mark De Ste Croix
No studies have analysed the acute effects of the FIFA 11+ and Harmoknee warm-up programmes on major physical performance measures. The aim of this study was to analyse the acute (post-exercise) effects of the FIFA 11+, Harmoknee and dynamic warm-up routines on several physical performance measures in amateur football players. A randomized, crossover and counterbalanced study design was used to address the purpose of this study. A total of sixteen amateur football players completed the following protocols in a randomized order on separate days: a) FIFA 11+; b) Harmoknee; and c) dynamic warm-up (DWU)...
2017: PloS One
https://www.readbyqxmd.com/read/28060714/adaptive-reliable-h%C3%A2-static-output-feedback-control-against-markovian-jumping-sensor-failures
#12
Ding Zhai, Liwei An, Dan Ye, Qingling Zhang
This paper investigates the adaptive H∞ static output feedback (SOF) control problem for continuous-time linear systems with stochastic sensor failures. A multi-Markovian variable is introduced to denote the failure scaling factors for each sensor. Different from the existing results, the failure parameters are stochastically jumping and their bounds of are unknown. An adaptive reliable H∞ SOF control method is proposed, where the controller parameters are updated automatically to compensate for the failure effects on systems...
January 2, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28059779/effect-of-leg-compliance-in-multi-directional-jumping-of-the-flea-inspired-mechanism
#13
Gwang-Pil Jung, Hong-Cheol Choi, Kyu-Jin Cho
Inspired by the relationship between leg compliance and jumping performance in the false stick insect, this paper describes how variations in leg compliance and jumping direction affect the performance of a flea-inspired jumping mechanism. The amount of energy lost during jumping was determined by examining the ratio of kinetic energy to input energy (also called conversion efficiency). Leg compliance is modeled based on the compliant mechanics to determine energy transfer during jumping and determined the optimum degree of leg compliance for maximizing performance...
January 6, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28057552/model-selection-in-statistical-historical-biogeography-of-neotropical-insects-the-exophthalmus-genus-complex-curculionidae-entiminae
#14
Guanyang Zhang, Usmaan Basharat, Nicholas Matzke, Nico M Franz
Statistical historical biogeographic methods rely on models that represent various biogeographic processes. Until recently model selection in this domain was not widely used, and the impact of differential model selection on inferring biogeographic scenarios was not well understood. Focusing on Neotropical weevils in the Exophthalmus genus complex (EGC) (Insecta: Curculionidae: Entiminae), we compare three commonly used biogeographic models - DIVA (Dispersal-Vicariance Analysis), DEC (Dispersal-Extinction-Cladogenesis) and BayArea (Bayesian Analysis of Biogeography), and examine the impact of modeling founder-event jump dispersal on historical biogeographic reconstructions...
January 2, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28052052/physical-characteristics-and-performance-of-japanese-top-level-american-football-players
#15
Daichi Yamashita, Masaki Asakura, Yoshihiko Ito, Shinzo Yamada, Yosuke Yamada
This study aimed to compare the physical characteristics and performance between top-level non-professional football players in Japan and National Football League (NFL) Combine invited players and between top- and middle-level players in Japan in order to determine the factors that enhance performance in international and national competitions. One hundred sixty-eight American football players (>20 years) in Japan participated in an anthropometric (height and weight) and physical (vertical jump, long jump, 40-yard dash, pro-agility shuttle, three-cone drill, and bench press repetition test) measurement program based on the NFL Combine program to compete in the selection of candidates for the Senior World Championship...
November 5, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28045955/an-objective-measure-of-noseband-tightness-and-its-measurement-using-a-novel-digital-tightness-gauge
#16
Orla Doherty, Thomas Conway, Richard Conway, Gerard Murray, Vincent Casey
Noseband tightness is difficult to assess in horses participating in equestrian sports such as dressage, show jumping and three-day-eventing. There is growing concern that nosebands are commonly tightened to such an extent as to restrict normal equine behaviour and possibly cause injury. In the absence of a clear agreed definition of noseband tightness, a simple model of the equine nose-noseband interface environment was developed in order to guide further studies in this area. The normal force component of the noseband tensile force was identified as the key contributor to sub-noseband tissue compression...
2017: PloS One
https://www.readbyqxmd.com/read/28035865/effect-of-contact-and-no-contact-small-sided-games-on-elite-handball-players
#17
Antonio Dello Iacono, Domenico Martone, Alessandro Moura Zagatto, Yoav Meckel, Mahmood Sindiani, Mirjana Milic, Johnny Padulo
This study aimed to investigate the effect of contact (C-SSG) and no-contact (NC-SSG) handball small-sided games (SSGs) on motion patterns and physiological responses of elite handball players. Twelve male handball players performed 10 C-SSG and 10 NC-SSG while being monitored through the heart rate (HR) and rate of perceived exertion (RPE) as physiological responses and time-motion activities profile using video-match analysis. Both game conditions resulted in similar HR responses (P > 0.05), but the NC-SSG led to a higher RPE scores...
December 30, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28031763/evolution-of-determinant-factors-of-repeated-sprint-ability
#18
Fernando Pareja-Blanco, Luis Suarez-Arrones, David Rodríguez-Rosell, Manuel López-Segovia, Pedro Jiménez-Reyes, Beatriz Bachero-Mena, Juan José González-Badillo
The aim of this study was to investigate the changes in the relationships between repeated sprint ability (RSA) and anthropometric measures as well as fitness qualities in soccer players. Twenty-one professional soccer players performed several anthropometric and physical tests including countermovement vertical jumps (CMJs), a straight-line 30 m sprint (T30), an RSA test (6 x 20 + 20 m with 20 s recovery), a progressive isoinertial loading test in a full squat, a Yo-Yo Intermittent Recovery Test Level-1 (YYIRT-1) and a 20 m shuttle run test (20mSRT)...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28024321/strain-gradient-modulated-exciton-emission-in-bent-zno-wires-probed-by-cathodoluminescence
#19
Xue-Wen Fu, Cai-Zhen Li, Liang Fang, Da-Meng Liu, Jun Xu, Da-Peng Yu, Zhi-Min Liao
Photoelectrical properties of semiconductor nanostructures are expected to be improved significantly by strain engineering. Besides the local strain, the strain gradient is promising to tune the luminescence properties by modifying the crystal symmetry. Here, we report the investigation of strain-gradient induced symmetry-breaking effect on excitonic states in pure bending ZnO microwires by high spatial-resolved cathodoluminescence at low temperature of 80 K. In addition to the local-strain induced light emission peak shift, the bound exciton emission photon energy shows an extraordinary jump of ∼16...
December 27, 2016: ACS Nano
https://www.readbyqxmd.com/read/28009264/noise-induces-hopping-between-nf-%C3%AE%C2%BAb-entrainment-modes
#20
Mathias Heltberg, Ryan A Kellogg, Sandeep Krishna, Savaş Tay, Mogens H Jensen
Oscillations and noise drive many processes in biology, but how both affect the activity of the transcription factor nuclear factor κB (NF-κB) is not understood. Here, we observe that when NF-κB oscillations are entrained by periodic tumor necrosis factor (TNF) inputs in experiments, NF-κB exhibits jumps between frequency modes, a phenomenon we call "cellular mode-hopping." By comparing stochastic simulations of NF-κB oscillations to deterministic simulations conducted inside and outside the chaotic regime of parameter space, we show that noise facilitates mode-hopping in all regimes...
December 21, 2016: Cell Systems
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