bluuebunny/crossref_metadata_2025_split huggingface dataset:
Trace of abelian varieties over function fields and the geometric Bogomolov conjecture
Authors: Yamaki Kazuhiko 
Published: January 2016

Abstract
We prove that the geometric Bogomolov conjecture
for any abelian varieties
is reduced to that for nowhere degenerate abelian varieties
with trivial trace.
In particular,
the geometric Bogomolov conjecture
holds
for abelian varieties whose maximal nowhere degenerate abelian subvariety
is isogenous to a constant abelian variety.
To prove the results, we
investigate closed subvarieties of
abelian schemes over constant varieties,
where constant varieties are varieties over
a function field which can be defined over the constant
field of the function field.
Teaching Conceptual Metaphors to EFL Learners in the European Space of Higher Education
Authors: Gutiérrez Pérez Regina 
Published: January 2016

AbstractThe CEFR encourages a more effective international communication. Given that effective communication in a L2 involves the ability to use metaphors, this figure becomes of prime importance to the teaching of languages. The present study applies a methodology for teaching English metaphors and idioms following the tenets of Cognitive Linguistics (CL). It argues the importance of “metaphoric competence”, and, by a conceptual metaphor awareness method, it advocates the usefulness of teaching metaphors and idioms and its explicit inclusion in a language syllabus aimed at increasing proficiency in L2. This conceptual basis for language is almost entirely unavailable to L2 learners in course books and reference materials. This paper reviews the scope of metaphor and metaphoric competence in the context of second-language teaching and learning, and provides some tips on how to teach metaphors and idioms effectively in a foreign language context. By analizing the systematicity and experiential basis of the expressions subject of study, it offers some pedagogical suggestions and teaching material that can facilitate the acquisition of idiomatic expressions by raising awareness of the conceptual metaphors that underlie them.
Estimation of Joint and Interface Parameters for the Finite Element Analysis of Jointed Concrete Pavement Using Structural Evaluation Results
Authors: Maitra Swati Roy , Reddy K. S. , Ramachandra L. S. 
Published: January 2016

Abstract
In the analysis of jointed concrete pavement, it is necessary to appropriately model certain aspects of the pavement for accurate estimation of its structural responses. These include load transfer at joints (doweled and aggregate interlocked) and interface condition between slab and foundation. This paper presents a backcalculation method for estimating the joint parameters, both transverse and longitudinal, and the interface parameter along with the pavement layer moduli by using the results of structural evaluation of an in-service concrete pavement. The details of the structural evaluation using Falling Weight Deflectometer (FWD) and the two-stage backcalculation procedure using a three-dimensional finite element (FE) model for jointed concrete pavement are discussed. Modulus of dowel support and modulus of interlocking joints are the transverse and longitudinal joint parameters respectively and the coefficient of friction between concrete slab and foundation is the interface parameter considered for the analysis. These parameters are the useful inputs in modeling jointed concrete pavement using finite element method.
Floodplain of the Orlice River (Eastern Bohemia, Czech Republic): The Natural Centre of Biodiversity
Authors: Vávra Michal 
Published: January 2016

Abstract
The article presents the main results of a field research carried out between 2012 and 2014. It is a comparison case study of vegetation diversity of pools and dead-end branches of the Orlice River in Eastern Bohemia, Czech Republic. The actual state of wetland vegetation is being compared to data from literature that is several decades old. Botanical survey was conducted in the study area located between the town of Hradec Králové and parishes of Malšovice, Malšova Lhota a Svinary. The research confirmed that dead-end river branches and oxbow lakes form potential refugia of biodiversity of vascular plants in the landscape context of the river area despite the fact that the River Orlice was fully regulated in the urban area of Hradec Králové and the surrounding parishes in the past. Nevertheless, the river area is of a natural character there and belongs to the Nature Park of Orlice since 1996. The local ecosystems are also a part of the important locality of the River Orlice and Elbe. The total of 449 taxons of vascular plants (on the level of species and sub-species) and species rich associations of aquatic and wetland plants were recorded in the study area. Conservation of the water regime in the fluvial landscape and suitable regulation interventions against some spreading invasive species are crucial for the continuing existence of the precious species composition. For this reason the article also includes some management steps.
Role of Plant Dominants on Abandoned Tailings Containment from Manganese-Ore Maining in Chvaletice, Eastern Bohemia, Czech Republic (Overview of Long-Term Case Studies)
Authors: Štefánek Michal 
Published: January 2016

Abstract
During long-term research (almost forty years) of tailings containment in Chvaletice (Eastern Bohemia) were also carried out studies on the role of each plant dominants in succession. This review presents the most interesting results of these studies.
Technical and Physical Activities of Small-Sided Games in Young Korean Soccer Players
Authors: Joo Chang H. , Hwang-Bo Kwan , Jee Haemi 
Published: January 2016

Abstract
Joo, CH, Hwang-Bo, K, and Jee, H. Technical and physical activities of small-sided games in young Korean soccer players. J Strength Cond Res 30(8): 2164–2173, 2016—The aim of this study was to examine the technical aspects and physical demands during small-sided games (SSGs) with different sized pitches in young Korean soccer players. Participants were randomly selected during a nationally held youth competition. Three different game formats were used: SSG8 (8 vs. 8 played on a small-sized field [68 × 47 m]), RSG8 (8 vs. 8 played on a regular-sized field [75 × 47 m]), and RSG11 (11 vs. 11 played on a regular-sized field). Eleven technical (ball touches, passes, and shots) and 6 physical demand variables (exercise frequency by intensity) were observed and analyzed. Same variables were also analyzed for the goalkeepers. As a result, SSG8 and RSG8 showed significantly greater numbers of technical plays in 5 and 4 variables in comparison to RSG11, respectively. In addition, although the exercise intensities increased slightly in both SSG formats, the amount was within the similar range as previous reports. In conclusion, the SSGs with reduced number of players may be referred in young players to effectively train them in technical aspects of the game by allowing greater ball exposure time without excessive physical demands. Various confounding factors such as pitch dimension should be carefully considered for training specific technical and physical variables in young Korean players.
Physical Characteristics Underpinning Lunging and Change of Direction Speed in Fencing
Authors: Turner Anthony , Bishop Chris , Chavda Shyam , Edwards Mike , Brazier Jon , Kilduff Liam P. 
Published: January 2016

Abstract
Turner, A, Bishop, C, Chavda, S, Edwards, M, Brazier, J, Kilduff, LP. Physical characteristics underpinning lunging and change of direction speed in fencing. J Strength Cond Res 30(8): 2235–2241, 2016—Lunge velocity (LV) and change of direction speed (CODS) are considered fundamental to success during fencing competitions; investigating the physical characteristics that underpin these is the aim of this study. Seventy fencers from the British Fencing National Academy took part and on average (±SD) were 16.83 ± 1.72 years of age, 178.13 ± 8.91 cm tall, 68.20 ± 9.64 kg in mass, and had 6.25 ± 2.23 years fencing experience. The relationship between anthropometric characteristics (height, arm span, and adductor flexibility) and measures of lower-body power (bilateral and unilateral countermovement jump height and reactive strength index) were examined in their ability to influence LV and CODS. In testing the former, fencers lunged (over a self-selected distance) to and from a force plate, where front leg impact and rear leg propulsive force were quantified; the lunging distance was divided by time to establish LV. Change of direction speed was measured over 12 m involving shuttles of between 2 and 4 m. Results revealed that LV and CODS averaged at 3.35 m·s−1 and 5.45 seconds, respectively, and in both cases, standing broad jump was the strongest predictor (r = 0.51 and −0.65, respectively) of performance. Rear leg drive and front leg impact force averaged at 14.61 N·kg−1 and 3 times body weight, respectively, with single leg jumps revealing an asymmetry favoring the front leg of 9 ± 8%. In conclusion, fencers should train lower-body power emphasizing horizontal displacement, noting that this seems to offset any advantage one would expect fencers of a taller stature to have. Also, the commonly reported asymmetry between legs is apparent from adolescence and thus also requires some attention.
Metabolic Demand and Internal Training Load in Technical-Tactical Training Sessions of Professional Futsal Players
Authors: Wilke Carolina F. , Ramos Guilherme P. , Pacheco Diogo A.S. , Santos Weslley H.M. , Diniz Mateus S.L. , Gonçalves Gabriela G.P. , Marins João C.B. , Wanner Samuel P. , Silami-Garcia Emerson 
Published: January 2016

Abstract
Wilke, CF, Ramos, GP, Pacheco, DAS, Santos, WHM, Diniz, MSL, Gonçalves, GGP, Marins, JCB, Wanner, SP, and Silami-Garcia, E. Metabolic demand and internal training load in technical-tactical training sessions of professional futsal players. J Strength Cond Res 30(8): 2330–2340, 2016—The aim of the study was to characterize aspects of technical-tactical training sessions of a professional futsal team. We addressed 4 specific aims: characterize the metabolic demands and intensity of these training sessions, compare the training intensity among players of different positions, compare the intensity of different futsal-specific activities (4 × 4, 6 × 4, and match simulation), and investigate the association between an objective (training impulse; TRIMP) and a subjective method (session rating of perceived exertion; sRPE) of measuring a player's internal training load. Twelve top-level futsal players performed an incremental exercise to determine their maximal oxygen consumption, maximal heart rate (HRmax), ventilatory threshold (VT), and respiratory compensation point (RCP). Each player's HR and RPE were measured and used to calculate energy expenditure, TRIMP, and sRPE during 37 training sessions over 8 weeks. The average intensity was 74 ± 4% of HRmax, which corresponded to 9.3 kcal·min−1. The players trained at intensities above the RCP, between the RCP and VT and below the VT for 20 ± 8%, 28 ± 6%, and 51 ± 10% of the session duration, respectively. Wingers, defenders, and pivots exercised at a similar average intensity but with different intensity distributions. No difference in intensity was found between the 3 typical activities. A strong correlation between the average daily TRIMP and sRPE was observed; however, this relationship was significant for only 4 of 12 players, indicating that sRPE is a useful tool for monitoring training loads but that it should be interpreted for each player individually rather than collectively.
Interval Running Training Improves Cognitive Flexibility and Aerobic Power of Young Healthy Adults
Authors: Venckunas Tomas , Snieckus Audrius , Trinkunas Eugenijus , Baranauskiene Neringa , Solianik Rima , Juodsnukis Antanas , Streckis Vytautas , Kamandulis Sigitas 
Published: January 2016

Abstract
Venckunas, T, Snieckus, A, Trinkunas, E, Baranauskiene, N, Solianik, R, Juodsnukis, A, Streckis, V, and Kamandulis, S. Interval running training improves cognitive flexibility and aerobic power of young healthy adults. J Strength Cond Res 30(8): 2114–2121, 2016—The benefits of regular physical exercise may well extend beyond the reduction of chronic diseases risk and augmentation of working capacity, to many other aspects of human well-being, including improved cognitive functioning. Although the effects of moderate intensity continuous training on cognitive performance are relatively well studied, the benefits of interval training have not been investigated in this respect so far. The aim of the current study was to assess whether 7 weeks of interval running training is effective at improving both aerobic fitness and cognitive performance. For this purpose, 8 young dinghy sailors (6 boys and 2 girls) completed the interval running program with 200 m and 2,000 m running performance, cycling maximal oxygen uptake, and cognitive function was measured before and after the intervention. The control group consisted of healthy age-matched subjects (8 boys and 2 girls) who continued their active lifestyle and were tested in the same way as the experimental group, but did not complete any regular training. In the experimental group, 200 m and 2,000 m running performance and cycling maximal oxygen uptake increased together with improved results on cognitive flexibility tasks. No changes in the results of short-term and working memory tasks were observed in the experimental group, and no changes in any of the measured indices were evident in the controls. In conclusion, 7 weeks of interval running training improved running performance and cycling aerobic power, and were sufficient to improve the ability to adjust behavior to changing demands in young active individuals.
Muscle Activation Patterns During Different Squat Techniques
Authors: Slater Lindsay V. , Hart Joseph M. 
Published: January 2016

Abstract
Slater, LV, and Hart, JM. Muscle activation patterns during different squat techniques. J Strength Cond Res 31(3): 667–676, 2017—Bilateral squats are frequently used exercises in sport performance programs. Lower extremity muscle activation may change based on knee alignment during the performance of the exercise. The purpose of this study was to compare lower extremity muscle activation patterns during different squat techniques. Twenty-eight healthy, uninjured subjects (19 women, 9 men, 21.5 ± 3 years, 170 ± 8.4 cm, 65.7 ± 11.8 kg) volunteered. Electromyography (EMG) electrodes were placed on the vastus lateralis, vastus medialis, rectus femoris, biceps femoris, and the gastrocnemius of the dominant leg. Participants completed 5 squats while purposefully displacing the knee anteriorly (AP malaligned), 5 squats while purposefully displacing the knee medially (ML malaligned) and 5 squats with control alignment (control). Normalized EMG data (MVIC) were reduced to 100 points and represented as percentage of squat cycle with 50% representing peak knee flexion and 0 and 99% representing fully extended. Vastus lateralis, medialis, and rectus femoris activity decreased in the medio-lateral (ML) malaligned squat compared with the control squat. In the antero-posterior (AP) malaligned squat, the vastus lateralis, medialis, and rectus femoris activity decreased during initial descent and final ascent; however, vastus lateralis and rectus femoris activation increased during initial ascent compared with the control squat. The biceps femoris and gastrocnemius displayed increased activation during both malaligned squats compared with the control squat. In conclusion, participants had altered muscle activation patterns during squats with intentional frontal and sagittal malalignment as demonstrated by changes in quadriceps, biceps femoris, and gastrocnemius activation during the squat cycle.
Functional Movement Screening Performance of Brazilian Jiu-Jitsu Athletes From Brazil: Differences Considering Practice Time and Combat Style
Authors: Del Vecchio Fabrício Boscolo , Gondim Denis Foster , Arruda Antonio Carlos Pereira 
Published: January 2016

Abstract
Boscolo Del Vecchio, F, Foster, D, and Arruda, A. Functional movement screening performance of Brazilian jiu-jitsu athletes from Brazil: differences considering practice time and combat style. J Strength Cond Res 30(8): 2341–2347, 2016—Brazilian jiu-jitsu (BJJ) is a grappling combat sport that athletes, lying (guard fighter) or kneeling (pass fighter) on the mat, attempt to force their opponents to submit. Brazilian jiu-jitsu practices may result in muscular imbalances, which increase the risk of injury. Instead, the Functional Movement Screen (FMS) is an evaluation routine that could be related to injury incidence and seeks to detect muscular imbalance and movement dysfunction. Thus, the aim of the study was to investigate the injury profile and the FMS score and their relationship, with consideration for the BJJ fight style. Sports injuries were recorded in the last 12 months of 33 BJJ athletes, and the statistical analyses were applied to a routine evaluation FMS and a score of 14 points or less was considered low performance in FMS. We used a logistic regression; the effect size (ES) was calculated, and 5% was assumed as the statistical significance level. Pass fighters showed a higher percentage of injuries on the thorax (24.24%) than did guard fighters (6.67%, p = 0.01). Upper limbs were the most injured part of the body (χ2 = 36.7; p < 0.001), and they were 79% of the injuries that occurred in training sessions (χ2 = 14.53; p < 0.001). Despite the lack of statistical differences in the FMS performance between guard and pass fighters (t = 1.97; p = 0.05), its magnitude was considered medium (ES = 0.77). There was an association between FMS and presence of injury (χ2 = 4.95; p = 0.03). Considering the FMS score as a predictor and the presence or absence of injury as the dependent variable, the data met a Wald coefficient of 4.55, p = 0.03 and Exp (B) = 5.71. The study found that almost half of the sample had injuries in the upper limbs and a quarter had injuries in the lower limbs in the last year. A poor FMS score was observed, and lower scores in the FMS were associated with a higher risk of injury in BJJ athletes.
Autoregulating Jump Performance to Induce Functional Overreaching
Authors: Claudino João G. , Cronin John B. , Mezêncio Bruno , Pinho João P. , Pereira Conrado , Mochizuki Luis , Amadio Alberto C. , Serrão Julio C. 
Published: January 2016

Abstract
Claudino, JG, Cronin, JB, Mezêncio, B, Pinho, JP, Pereira, C, Mochizuki, L, Amadio, AC, and Serrão, JC. Autoregulating jump performance to induce functional overreaching. J Strength Cond Res 30(8): 2242–2249, 2016—The purpose of this study was to determine whether autoregulating jump performance using the minimal individual difference (MID) associated with countermovement jump (CMJ) height could be used to regulate and monitor a training phase that elicited functional overreaching and tapering in team sport athletes. The participants were familiarized with the jump and then the CMJ height reliability was quantified to determine the MID. Countermovement jump height was assessed in the pretesting session (T0), at the end of 4 weeks of intensified training (T1), and after 2 weeks of tapering (T2). Eighteen national level U17 male futsal players were randomly allocated into the regulated group (RG; n = 9) and the control group (CG; n = 9). The RG performed 6 weeks of training with the training load regulated by mean height of CMJ with MID, whereas the CG performed the preplanned training. The differences between groups and across time points were compared by a 2-way analysis of variance. In the RG, the MID loading was increased in weeks 3 and 4 (8.2 and 14.5%, respectively; p < 0.001) compared with the preplanned loading of the CG during the overreaching phase. In the jump results, the RG significantly (p ≤ 0.05) reduced CMJ height during T1 (effect size [ES] = −0.31; 95% confidence interval [CI]: −0.58 to −0.02); however, there were no significant changes in the CG jump height at T1 and T2. At T2, the RG significantly increased CMJ height above baseline (ES = 0.30; 95% CI: 0.09 to 0.51). Researchers and practitioners could use this autoregulating method to regulate and monitor training load to achieve functional overreaching in youth futsal players.
Similarities and Differences in Pacing Patterns in a 161-km and 101-km Ultra-Distance Road Race
Authors: Tan Philip L.S. , Tan Frankie H.Y. , Bosch Andrew N. 
Published: January 2016

Abstract
Tan, PLS, Tan, FHY, and Bosch, AN. Similarities and differences in pacing patterns in a 161-km and 101-km ultra-distance road race. J Strength Cond Res 30(8): 2145–2155, 2016—The purpose of this study was to establish and compare the pacing patterns of fast and slow finishers in a tropical ultra-marathon. Data were collected from the Craze Ultra-marathon held on the 22nd and 21st of September in 2012 and 2013, respectively. Finishers of the 161-km (N = 47) and 101-km (N = 120) categories of the race were divided into thirds (groups A–C) by merit of finishing time. Altogether, 17 and 11 split times were recorded for the 161-km and 101-km finishers, respectively, and used to calculate the mean running speed for each distance segment. Running speed for the first segment was normalized to 100, with all subsequent splits adjusted accordingly. Running speed during the last 5 km was calculated against the mean race pace to establish the existence of an end spurt. A reverse J-shaped pacing profile was demonstrated in all groups for both distance categories and only 38% of the finishers executed an end spurt. In the 101-km category, in comparison with groups B and C, group A maintained a significantly more even pace (p = 0.013 and 0.001, respectively) and completed the race at a significantly higher percent of initial starting speed (p = 0.001 and 0.001, respectively). Descriptive data also revealed that the top 5 finishers displayed a “herd-behavior” by staying close to the lead runner in the initial portion of the race. These findings demonstrate that to achieve a more even pace, recreational ultra-runners should adopt a patient sustainable starting speed, with less competitive runners setting realistic performance goals whereas competitive runners with a specific time goal to consider running in packs of similar pace.