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https://www.readbyqxmd.com/read/27933074/comparative-genomic-analysis-of-the-grf-genes-in-chinese-pear-pyrus-bretschneideri-rehd-poplar-populous-grape-vitis-vinifera-arabidopsis-and-rice-oryza-sativa
#1
Yunpeng Cao, Yahui Han, Qing Jin, Yi Lin, Yongping Cai
Growth-regulating factors (GRFs) are plant-specific transcription factors that have important functions in regulating plant growth and development. Previous studies on GRF family members focused either on a single or a small set of genes. Here, a comparative genomic analysis of the GRF gene family was performed in poplar (a model tree species), Arabidopsis (a model plant for annual herbaceous dicots), grape (one model plant for perennial dicots), rice (a model plant for monocots) and Chinese pear (one of the economical fruit crops)...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27919485/the-required-coefficient-of-friction-for-evaluating-gait-alterations-in-people-with-multiple-sclerosis-during-gait
#2
Ilaria Pacifici, Manuela Galli, Ana Francisca Rozin Kleiner, Federica Corona, Giancarlo Coghe, Elisabetta Marongiu, Andrea Loi, Antonio Crisafulli, Eleonora Cocco, Maria Giovanna Marrosu, Massimiliano Pau
BACKGROUND: Required Coefficient of Friction (RCOF) is one of the most critical gait parameters associated to the occurrence of slipping in individuals affected by neurological disorders characterized by balance impairments. This study aims to calculate RCOF in people with Multiple Sclerosis (MS) on the basis of three-dimensional Gait Analysis (GA) data. METHODS: This study enrolls 22 people with MS (pwMS) who were characterized by an Expanded Disability Status Score in the range 1...
November 2016: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/27914310/electrical-potentials-measured-on-the-surface-of-the-knee-reflect-the-changes-of-the-contact-force-in-the-knee-joint-produced-by-postural-sway
#3
Lin Zhu, Martin Garon, Éric Quenneville, Michael D Buschmann, Pierre Savard
Electroarthrography (EAG) is a novel technique for recording potentials on the knee surface that are generated by the compression of articular cartilage and that reflect both compression force and cartilage quality. The mechanical loading of the knee is achieved by transferring the subject's body weight from a bipedal stance to a unipedal stance. We hypothesized that EAG potentials change with postural sway. The study was performed on 20 normal subjects (10 male, 10 female; age 29±10.5 yrs.; mass 68.8±14...
October 18, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27912154/limb-dominance-foot-orientation-and-functional-asymmetry-during-walking-gait
#4
John D Polk, Rebecca M Stumpf, Karl S Rosengren
While healthy gait is often characterized as, or assumed to be symmetric, consistent asymmetries often exist. In this study, we test the hypotheses that asymmetries in lower limb function, as measured by ground reaction force characteristics, may be explained by differences in foot orientation or limb dominance. Peak ground reaction force (GRF) measurements, and impulses were obtained for thirty-six healthy subjects with simultaneous kinematic estimates of foot posture. Three gait tasks were performed: subjects walked i) with normal foot orientation, ii) with feet laterally rotated (outward), and iii) with feet aligned in the direction of movement (straight)...
November 18, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27863284/landing-from-different-heights-biomechanical-and-neuromuscular-strategies-in-trained-gymnasts-and-untrained-prepubescent-girls
#5
Α Christoforidou, D A Patikas, E Bassa, I Paraschos, S Lazaridis, C Christoforidis, C Kotzamanidis
The purpose of this study was to examine the biomechanics of the lower limb, during landing in female prepubertal gymnasts and prepubertal untrained girls, aged 9-12years. Ten healthy participants were included in each group and performed five landings from 20, 40, and 60cm. Kinematics, ground reaction forces (GRF) and electromyogram (EMG) from the lateral gastrocnemius, tibialis anterior, and vastus lateralis are presented. Gymnasts had higher vertical GRF and shorter braking phase during landing. Compared to untrained girls, gymnasts exhibited for all examined drop heights more knee flexion before and at ground contact, but less knee flexion at maximum knee flexion position...
November 9, 2016: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/27855449/-evaluation-of-the-german-research-foundation-s-grf-%C3%A2-clinical-trials-academy-for-junior-researchers%C3%A2-publications-and-funding-profiles
#6
Levka Dahmen, Frank Krummenauer
Background | The »Clinical Trials Academy for Junior Researchers« is a strategic funding instrument of the German Research Foundation (GRF). In clinical research, this program responds to an increasing lack of qualified clinician scientists. Application for participation in the workshop is based on a self-proposed academy project; participants can furthermore apply for a GRF grant to implement this academy project. This evaluation should quantify publication and third-party-funding profiles after participation in one of the previous GRF junior researchers workshops on clinical trials...
November 2016: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/27834579/patient-reported-efficacy-6-months-after-a-4-week-rehabilitation-intervention-in-individuals-with-chronic-ankle-instability
#7
Cynthia J Wright, Shelly W Linens
OBJECTIVE: To track the patient-reported efficacy of a 4-week intervention [wobble board (WB) or resistance tubing (RT)] in decreasing symptoms of Chronic Ankle Instability (CAI) at 6 months post-intervention (6PI) as compared to immediately post-intervention (IPI). DESIGN: Randomized controlled trial. PARTICIPANTS: Fourteen out of 21 participants (66.7%) responded to an electronic 6 month follow-up questionnaire (age: 19.6±0.9years, height: 1...
November 11, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27820692/filler-content-surface-microhardness-and-rheological-properties-of-various-flowable-resin-composites
#8
S Jager, R Balthazard, A Dahoun, E Mortier
OBJECTIVES: The objectives of this study were to determine the filler content, the surface microhardness (at baseline and after immersion in water for 2 years), and the rheological properties of various flowable resin composites. METHODS: Three flowable resin composites (Grandioso Heavy Flow [GHF], Grandio Flow [GRF], Filtek Supreme XTE Flow [XTE]), one pit and fissure sealant resin composite (ClinPro [CLI]), and three experimental flowable resin composites with the same matrix and a variable filler content (EXPA, EXPB, EXPC) were tested...
November 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27783247/nanostructured-zno-tio2-thin-film-oxide-as-anode-material-in-electrooxidation-of-organic-pollutants-application-to-the-removal-of-dye-amido-black-10b-from-water
#9
Sana El-Kacemi, Hicham Zazou, Nihal Oturan, Matthias Dietze, Mohamed Hamdani, Mohammed Es-Souni, Mehmet A Oturan
Electrochemical oxidative degradation of diazo dye Amido black 10B (AB10B) as model pollutant in water has been studied using nanostructured ZnO-TiO2 thin films deposited on graphite felt (GrF) substrate as anode. The influence of various operating parameters, namely the current intensity, the nature and concentration of catalyst, the nature of electrode materials (anode/cathode), and the adsorption of dye and ambient light were investigated. It was found that the oxidative degradation of AB10B followed pseudo first-order kinetics...
October 25, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27723362/changing-sagittal-plane-landing-styles-to-modulate-impact-and-tibiofemoral-force-magnitude-and-directions-relative-to-the-tibia
#10
Yohei Shimokochi, Jatin P Ambegaonkar, Eric G Meyer
CONTEXT: Ground reaction force (GRF) and tibiofemoral force magnitudes and directions have been shown to affect anterior cruciate ligament loading during landing. However, the kinematic and kinetic factors modifying these 2 forces during landing are unknown. OBJECTIVE: To clarify the intersegmental kinematic and kinetic links underlying the alteration of the GRF and tibiofemoral force vectors secondary to changes in the sagittal-plane body position during single-legged landing...
September 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27722075/experimental-sensing-and-density-functional-theory-study-of-h2s-and-sof2-adsorption-on-au-modified-graphene
#11
Xiaoxing Zhang, Lei Yu, Xiaoqing Wu, Weihua Hu
A gas sensor is used to detect SF6 decomposed gases, which are related to insulation faults, to accurately assess the insulated status of electrical equipment. Graphene films (GrF) modified with Au nanoparticles are used as an adsorbent for the detection of H2S and SOF2, which are two characteristic products of SF6 decomposed gases. Sensing experiments are conducted at room temperature. Results demonstrate that Au-modified GrF yields opposite responses to the tested gases and is thus considered a promising material for developing H2S- and SOF2-selective sensors...
November 2015: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://www.readbyqxmd.com/read/27705058/estimates-of-running-ground-reaction-force-parameters-from-motion-analysis
#12
Gaspare Pavei, Elena Seminati, Jorge Ll Storniolo, Leonardo A Peyré-Tartaruga
We compared running mechanics parameters determined from ground reaction force (GRF) measurements with estimated forces obtained from double differentiation of kinematic (K) data from motion analysis in a broad spectrum of running speeds (1.94-5.56 m·s(-1)). Data were collected through a force-instrumented treadmill and compared at different sampling frequencies (900 and 300 Hz for GRF, 300 and 100 Hz for K). Vertical force peak, shape, and impulse were similar between K methods and GRF. Contact time, flight time and vertical stiffness (kvert) obtained from K showed the same trend as GRF with differences <5%, whereas leg stiffness (kleg) was not correctly computed by kinematics...
October 5, 2016: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/27693099/distinct-cut-task-strategy-in-australian-football-players-with-a-history-of-groin-pain
#13
Suzi Edwards, Hiram C Brooke, Jill L Cook
OBJECTIVES: This study aimed to explore the differences in the magnitude of movement variability and strategies utilized during an unanticipated cut task between players with and without a history of groin pain. DESIGN: Cross-sectional design. SETTING: Biomechanics laboratory. PARTICIANTS: Male Australian football players with (HISTORY; n = 7) or without (CONTROL; n = 10) a history of groin pain. OUTCOME MEASURES: Three-dimensional ground reaction forces (GRF) and kinematics were recorded during 10 successful trials of an unanticipated cut task, and isokinetic hip adduction and abduction strength...
July 22, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27682291/gait-analysis-in-tumor-patients-after-distal-femoral-resection-and-implantation-of-a-megaprosthesis
#14
J Bruns, K Raabe, G Deuretzbacher
We analysed nine patients who had had a megaprosthesis implanted into the distal femur and knee joint for treatment of sarcomas. Data obtained from the leg operated on were compared with those from the contralateral side and healthy volunteers. Gait data, kinematics, ground reaction forces and the EMG from five muscles around the knee joint were analysed by means of a video-based analysis system recording data from reflection markers ; a Kistler-plate recorded the GRF and a ten channel surface EMG the muscle activity...
August 2016: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/27669181/the-effects-of-accentuated-eccentric-loading-on-the-drop-jump-exercise-and-the-subsequent-postactivation-potentiation-response
#15
Lee A Bridgeman, Michael R McGuigan, Nicholas D Gill, Deborah Dulson
The aims of this study were to (A) investigate the acute effects of different drop jump (DJ) accentuated eccentric loading (AEL) protocols and (B) to investigate the effect of these AEL DJ protocols on subsequent countermovement jump (CMJ) performance. The subjects were 12 strength-trained athletes, initially, baseline CMJ performance was assessed and individual optimal DJ drop height identified. In subsequent weeks subjects completed 1 set of 5 DJ's with no additional load or an AEL of 10, 20 or 30% of their individual body mass (BM) utilising dumbbells to provide the extra load...
September 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27632874/a-randomized-controlled-trial-comparing-rehabilitation-efficacy-in-chronic-ankle-instability
#16
Cynthia J Wright, Shelley W Linens, Mary Spencer Cain
CONTEXT: There is minimal patient-oriented evidence regarding the effectiveness of interventions targeted to reduce symptoms associated with chronic ankle instability (CAI). Additionally, clinicians aiming to prioritize care by implementing only the most effective components of a rehabilitative program have very little evidence on comparative efficacy. OBJECTIVE: To assess the comparative efficacy of two common ankle rehabilitation techniques [wobble board (WB) balance training and ankle strengthening using resistance tubing (RT)] using patient-oriented outcomes...
August 24, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27632838/effects-of-volitional-spine-stabilization-and-lower-extremity-fatigue-on-knee-and-ankle-during-landing-performance-in-a-recurrent-low-back-pain-population
#17
Ram Haddas, Steven F Sawyer, Phillip S Sizer, Toby Brooks, Ming-Chien Chyu, C Roger James
INTRODUCTION: Recurrent LBP (rLBP) and neuromuscular fatigue are independently thought to increase the risk of lower extremity (LE) injury. Volitional preemptive abdominal contraction (VPAC) is thought to improve lumbar spine and pelvis control in individuals with rLBP. The effects of VPAC on fatigued landing performance in individuals with rLBP are unknown. OBJECTIVES: To determine the effects of VPAC and LE fatigue on landing performance in a rLBP population. DESIGN: Cross-sectional pretest-posttest cohort control design...
August 24, 2016: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/27624557/initial-foot-contact-and-related-kinematics-affect-impact-loading-rate-in-running
#18
Bastiaan Breine, Philippe Malcolm, Ine Van Caekenberghe, Pieter Fiers, Edward C Frederick, Dirk De Clercq
This study assessed kinematic differences between different foot strike patterns and their relationship with peak vertical instantaneous loading rate (VILR) of the ground reaction force (GRF). Fifty-two runners ran at 3.2 m · s(-1) while we recorded GRF and lower limb kinematics and determined foot strike pattern: Typical or Atypical rearfoot strike (RFS), midfoot strike (MFS) of forefoot strike (FFS). Typical RFS had longer contact times and a lower leg stiffness than Atypical RFS and MFS. Typical RFS showed a dorsiflexed ankle (7...
September 13, 2016: Journal of Sports Sciences
https://www.readbyqxmd.com/read/27611061/time-series-of-ground-reaction-forces-following-a-single-leg-drop-jump-landing-in-elite-youth-soccer-players-consist-of-four-distinct-phases
#19
Duncan P Fransz, Arnold Huurnink, Vosse A de Boode, Idsart Kingma, Jaap H van Dieën
The single leg drop jump landing test may assess dynamic and static balance abilities in different phases of the landing. However objective definitions of different phases following landing and associated reliability are lacking. Therefore, we determined the existence of possible distinct phases of single leg drop jump landing on a force plate in 82 elite youth soccer players. Three outcome measures were calculated over moving windows of five sizes: center of pressure (COP) speed, COP sway and horizontal ground reaction force (GRF)...
September 4, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27592823/ground-reaction-forces-during-steeplechase-hurdling-and-waterjumps
#20
Shalaya Kipp, Paolo Taboga, Rodger Kram
Athletes in the 3,000 m steeplechase track and field event negotiate unmovable hurdles and waterjumps. Ground reaction forces (GRF) in the steeplechase were quantified to elucidate injury risks / mechanisms and to inform coaches. Five male and five female steeplechasers participated. GRF were measured during treadmill running, and using specially mounted force platforms, during hurdle and waterjump takeoffs and landings at 5.54 m/s (males) or 5.00 m/s (females). Results are presented as: male mean ± SD / female mean ± SD...
September 5, 2016: Sports Biomechanics
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