bluuebunny/crossref_metadata_2025_split huggingface dataset:
Countermovement Jump and Squat Jump Force-Time Curve Analysis in Control and Fatigue Conditions
Authors: Hughes Steven , Warmenhoven John , Haff G. Gregory , Chapman Dale W. , Nimphius Sophia 
Published: February 2021

Abstract
Hughes, S, Warmenhoven, J, Haff, GG, Chapman, DW, and Nimphius, S. Countermovement jump and squat jump force-time curve analysis in control and fatigue conditions. J Strength Cond Res 36(10): 2752–2761, 2022—This study aimed to reanalyze previously published discrete force data from countermovement jumps (CMJs) and squat jumps (SJs) using statistical parametric mapping (SPM), a statistical method that enables analysis of data in its native, complete state. Statistical parametric mapping analysis of 1-dimensional (1D) force-time curves was compared with previous zero-dimensional (0D) analysis of peak force to assess sensitivity of 1D analysis. Thirty-two subjects completed CMJs and SJs at baseline, 15 minutes, 1, 24, and 48 hours following fatigue and control conditions in a pseudo random cross-over design. Absolute (CMJABS/SJABS) and time-normalized (CMJNORM/SJNORM) force-time data were analyzed using SPM 2-way repeated measures analysis of variance with significance accepted at α = 0.05. The SPM indicated a magnitude of difference between force-time data with main effects for time (p < 0.001) and interaction (p < 0.001) observed in CMJABS, SJABS, and SJNORM, whereas previously published 0D analysis reported no 2-way interaction in CMJ and SJ peak force. This exploratory research demonstrates the strength of SPM to identify changes between entire movement force-time curves. Continued development and use of SPM analysis techniques could present the opportunity for refined assessment of athlete fatigue and readiness with the analysis of complete force-time curves.
A 5-day Heat Acclimation Program Improves Heat Stress Indicators While Maintaining Exercise Capacity
Authors: Wardenaar Floris C. , Ortega-Santos Carmen P. , Vento Kaila A.S. , Beaumont Joshua S. , Griffin Stephanie C. , Johnston Carol , Kavouras Stavros A. 
Published: February 2021

Abstract
Wardenaar, FC, Ortega-Santos, CP, Vento, K, Beaumont, JS, Griffin, SC, Johnston, C, and Kavouras, SA. A 5-day heat acclimation program improves heat stress indicators while maintaining exercise capacity. J Strength Cond Res 35(5): 1279–1286, 2021—This study aimed to evaluate whether a daily 60 minutes isothermic biking protocol during a 5-day period could improve physiological heat acclimation and exercise performance capacity in partially acclimated subjects. A quasi-experimental study consisted of an intervention (INT, n = 7) and control (CON, n = 7) group completing 2 12 minutes Cooper tests (pre-CT on day 1 and post-CT on day 7) and a heat stress test (HST, on day 9). INT performed additional intensive exercise 1 hour per day on days 1–5, whereas CON did not. During CTs and HST, core temperature (Tc, telemetric capsule), skin temperature (Tsk, sensors at neck, right shoulder, left hand, and right shin), and heart rate (HR, chest strap) were continuously monitored and baseline, average, peak, and increment were calculated. During the HST, the INT group showed a smaller baseline-peak Tc increment (INT 0.88 ± 0.27 vs. CON 1.64 ± 0.90° C, p = 0.02), a lower HR peak (150.2 ± 12.6 vs. 173.0 ± 16.8 b·min−1, p = 0.02), and lower Tsk peak (36.47 ± 0.62 vs. 36.54 ± 0.46° C, p = 0.04). There was a nonsignificant, but practical difference based on a moderate effect size for change in pre-CT to post-CT performance of nearly +2.7 ± 12.3% in INT and −3.0 ± 8.5% in CON (p = 0.32 and d = 0.51), and HST distance covered resulting in a nonsignificant difference of 464 ± 849 m between INT and CON (p = 0.38 and d = 0.44). In conclusion a short-term 5-day heat acclimation program including 300 minutes of extra exercise resulted in positive physiological adaptions to heat stress, as indicated by lower core temperature and HR in comparison with a control group.
Physiological and Perceptual Responses to a Single Session of Resisted Sled Sprint Training at Light or Heavy Sled Loads
Authors: Monahan Maria , Petrakos George , Egan Brendan 
Published: February 2021

Abstract
Monahan, M, Petrakos, G, and Egan, B. Physiological and perceptual responses to a single session of resisted sled sprint training at light or heavy sled loads. J Strength Cond Res 36(10): 2733–2740, 2022—The acute physiological and perceptual responses to a single session of resisted sled sprint (RSS) training are largely unexplored, nor have differences, if any, between male and female athletes been compared. Team field sport athletes (n = 27; male/female, 15/12; 21.1 ± 2.7 years) were assessed for Maximal Resisted Sled Load (MRSL) from which light (L-RSS, 30%MRSL) and heavy (H-RSS, 80%MRSL) sled loads were prescribed. On separate occasions in random order, 2 training sessions of 12 × 20 m RSS repetitions at either L- or H-RSS were performed, and assessments of physiological and perceptual responses were performed before (PRE), during, after (POST) and 24 hours after (+24 hours POST) each session. Compared to unresisted sprints, velocity decrements of 7.5 ± 2.2 and 22.7 ± 8.1% were produced by L-RSS and H-RSS, respectively. Heart rate, blood lactate, and ratings of perceived exertion were higher in H-RSS compared to L-RSS. Decrements in 20 m sprint and countermovement jump performance observed at POST had returned to PRE values at +24 hours POST. Except for a higher heart rate (∼7–12 b·min−1) in females during the respective sessions, responses to L- and H-RSS were generally similar between males and females. A single session of heavy RSS training is more demanding than light RSS training when matched for sprint number and distance, but measures of lower limb power and sprint performance return to pre-training levels within 24 hours regardless of sled load. Males and females respond similarly to a single session of RSS training when individualized, relative intensity sled loads are prescribed.
Stretch-Shortening Cycle Potentiation and Resistance Training-Induced Changes in Walking Economy/Ease and Activity-Related Energy Expenditure in Older Women
Authors: Hunter Gary R. , Singh Harshvardhan , Martins Catia , Baranauskas Marissa N. , Carter Stephen J. 
Published: February 2021

Abstract
Hunter, GR, Singh, H, Martins, C, Baranauskas, MN, and Carter, SJ. Stretch-shortening cycle potentiation and resistance training-induced changes in walking economy/ease and activity-related energy expenditure in older women. J Strength Cond Res 35(5): 1345–1349, 2021—Use of elastic energy to improve economy and ease of walking may be important for older adults. The purpose of this investigation was to determine whether baseline (i.e., untrained) stretch-shortening cycle potentiation (SSCP) was associated with potential changes in free-living activity-related energy expenditure (AEE) after supervised exercise training. Sedentary, postmenopausal women (n = 64) between 60 and 74 years of age were evaluated before and after 16 weeks of combined aerobic and resistance training. Assessments included: (a) body composition (dual-energy X-ray absorptiometry), (b) resting energy expenditure (indirect calorimetry), (c) submaximal and maximal walking (treadmill/indirect calorimetry), (d) total energy expenditure (doubly labeled water), and (e) one repetition maximum performed on an incline leg press and SSCP (calculated as the difference between concentric and countermovement leg press throw). Results indicated that baseline SSCP was related (r = −0.29; p < 0.02) to changes in AEE. However, subjects who possessed a high baseline SSCP did not increase SSCP or AEE, whereas subjects with low to moderate baseline SSCP demonstrated a significant increase in both SSCP (low +0.54 and moderate +0.47 m·s−1) and AEE (low +158 and moderate +333 kcal·d−1) post-training (all p less than 0.05). Our findings suggest that among subjects with low to moderate baseline SSCP, 16 weeks of combined aerobic and resistance training can increase SSCP and free-living AEE. However, subjects with high baseline SSCP may require tailored exercise to increase SSCP and possibly AEE.
Common Vertical Jump and Reactive Strength Index Measuring Devices: A Validity and Reliability Analysis
Authors: Montalvo Samuel , Gonzalez Matthew P. , Dietze-Hermosa Martin S. , Eggleston Jeffrey D. , Dorgo Sandor 
Published: February 2021

Abstract
Montalvo, S, Gonzalez, MP, Dietze-Hermosa, M, Eggleston, JD, and Dorgo, S. Common vertical jump and reactive strength index measuring devices: A validity and reliability analysis. J Strength Cond Res 35(5): 1234–1243, 2021—Several field-test devices exist to assess vertical jump, but they either lack proper validation or have been validated for the countermovement jump (CMJ) only. This study aimed to quantify the validity and reliability of metrics, including jump height and the calculated reactive strength index (RSI), obtained using the flight-time method from 4 different assessment devices with 3 different vertical jump modalities in comparison to a force platform (criterion assessment). The Optojump, Push-Band 2.0, MyJump2 mobile application, and What'sMyVert mobile application were used synchronously and together with the force platforms. Thirty subjects (17 males and 13 females; age ± SD: 23.37 ± 1.87 years) performed 5 repetitions of CMJ, squat jump (SQJ), and drop jump (DJ) with a standardized 90° knee flexion for all jumps. Relative reliability was determined by intraclass correlation (ICC) and absolute reliability by coefficient of variation (CV) analyses. Excellent reliability was considered as ICC > 0.9 and CV < 10%. Validity was obtained through an ordinary least products regression, ICC, and CV. Significance was set at p < 0.05. Reliability was excellent on jump height for the CMJ (ICC ≥ 0.98; CV ≤ 8.14%) for all instruments. With the exception of the Optojump, all instruments also had excellent reliability for the SQJ (ICC ≥ 0.98; CV ≤ 6.62) and DJ (ICC ≥ 0.94; CV ≤ 8.19). For the RSI metric, all instruments had excellent relative reliability (ICC ≥ 0.92), but none had excellent absolute reliability (CV ≥ 12.5%). The MyJump2 and What'sMyVert apps showed excellent validity on all jump modalities and RSI. The Optojump and Push-Band 2.0 devices both showed system and proportional bias for several jump modalities and RSI. Overall, both mobile applications may provide coaches with a cost-effective and reliable measurement of various vertical jumps.
MATLAB Guide for Analyzing Countermovement Jump Strategies and Performance Over Time
Authors: Harry John R. 
Published: February 2021

ABSTRACT
Valid and reliable countermovement vertical jump (CMJ) assessments using force platforms can require complex data analysis processes not typically explored during strength and conditioning professionals' training. Although commercially available software programs with focused functionality for force platform-based CMJ analyses have become accessible to help simplify the process, such programs require costly annual subscriptions and can promote reliance on the “black box” for analysis. The purpose of this report was to provide a guide and template aimed to help strength and conditioning professionals create data analysis programs using MATLAB to monitor CMJ performance and performance changes across multiple testing sessions. The guide focuses on programming strategies to import multiple CMJ trials, treat data (i.e., filtering), calculate performance and strategy variables, and create graphics documenting an athlete's performance changes over time. The provided example script can be used as standalone analysis program for the CMJ, to help coaches learn basic script-writing strategies to create their own analysis programs for the CMJ and other performance tests, or both. Ultimately, strength and conditioning professionals should seek to have ownership of their data and analysis processes, and this guide can help coaches start or continue that process.
Aproximaciones al proceso de patrimonialización del territorio: Caso del sitio arqueológico Aypate (2012-2016)
Authors: Morán-Jorquera Jessica 
Published: February 2021

Un territorio rico en recursos naturales, principalmente de fuentes de agua, además de un exuberante verde que esconde en sus entrañas un centro religioso y administrativo inca.
La provincia de Ayabaca en Piura es un lugar que contradictoriamente, a pesar de la gran riqueza natural y cultural que posee, se caracteriza por la pobreza y falta de servicios básicos.
El presente trabajo comprende un acercamiento al proceso de patrimonialización que ha sufrido este territorio, proceso que amenaza la economía de subsistencia de las comunidades y rondas campesinas. Así mismo, se exponen algunas luces de cómo podría mejorar este proceso mediante una gestión participativa.
Modelación de la curva de lactación en vacas Holstein de un establo en el valle de Huaura, Perú
Authors: Vásquez R. Angel , García S. María Elisa C. , Sessarego D. Emmanuel , Chagray A. Néstor 
Published: February 2021

La investigación tuvo como objetivo modelar la curva de lactación en vacas lecheras, con modelos no lineales (MNL) y modelos mixtos no lineales (MMNL), en un establo de crianza intensiva durante el periodo 2007-2013. Se analizaron 22 173 datos referidos a controles quincenales de producción de leche (kg), correspondientes a 1302 lactaciones y 668 vacas Holstein. Se utilizaron los modelos matemáticos de Brody, Wood, Cobby y Wilmink evaluando cuatro MNL y cuatro MMNL, considerando como efecto aleatorio a la vaca a través del paquete estadístico SAS v. 9.4. Aplicando la información del método de Akaike (AIC) y Bayesiano (BIC), los MMNL resultaron ser los de mejor ajuste para la curva de lactancia a 305 días. El modelo mixto de Wood fue el de mejor ajuste para el primer parto y el modelo mixto de Wilmink para los demás partos. Así mismo, se determinó el pico de producción, días al pico de producción, rendimiento productivo porcentual por tercios durante la lactación y la producción a 305 días según el número de parto.
Determination of narciclasine in mouse blood by UPLC-MS/MS and its application to a pharmacokinetic study
Authors: Ren Ke , Feng Tiantian , Shi Hai , Ma Jianshe , Jin Yongxi 
Published: February 2021

Abstract
Narciclasine is a 7-hydroxy derivative of lycorisidine. It was the first alkaloid isolated from the stem of narcissus (Amaryllidaceae) in 1967. Six mice were given narciclasine (5 mg/kg) by intravenous administration. A UPLC-MS/MS method was developed to determine narciclasine in mouse blood. Tectorigenin (internal standard, IS) and narciclasine were gradient eluted by mobile phase of methanol and 0.1% formic acid in a BEH C18 column. The multiple reaction monitoring (MRM) of m/z 308.1→248.1 for narciclasine and m/z 301.1→286.0 for IS with an electrospray ionization (ESI) source was used for quantitative determination. The calibration curve ranged from 1 to 6,000 ng/mL. The accuracy was from 92.5 to 107.3%, and the matrix effect was between 103.6 and 107.4%. The developed UPLC-MS/MS method was successfully applicated to a pharmacokinetic study of narciclasine in mice after intravenous administration (5 mg/kg).
A felsőoktatásban részt vevő hallgatók földrajzi mobilitása
Authors: Tőzsér Anett , Péterfi Petra 
Published: February 2021

Összefoglaló. A kutatás fókuszában a Kárpát-medencei magyar
felsőoktatási intézményeket érintő hallgatói pályák feltérképezése áll. E
témakör fő kérdése, hogy milyen mértékben és milyen minőségben valósul meg a
Kárpát-medencei magyar felsőoktatásban a hallgatói mobilitás. A kvalitatív
kutatásaink alapján sikerült feltérképeznünk a Kárpát-medencei magyar
felsőoktatási intézményeket érintő hallgatói pályákat. A kutatás keretében
elemeztük a hallgatók mobilitási hajlandóságát, attitűdjét, a mobilitás
lehetséges akadályait, valamint az ezekre kínálkozó megoldási alternatívákat is
feltérképeztük.
Summary. The focus of the research is the mapping of students’
career paths outside the Carpathian Basin and of Hungarian higher education
institutions in the Carpathian Basin. The main question in this topic is the
extent and quality of student mobility in Hungarian higher education in the
Carpathian Basin. Through the methodology of qualitative research, we have been
able to map in detail the depths of student careers in Hungarian higher
education institutions in the Carpathian Basin. Within the framework of the
research, we analysed the students’ willingness to move, their attitudes, the
possible obstacles to mobility, and the solutions available to them.
Az inkluzív intézményvezetés és az inkluzív nevelés-oktatás összefüggései
Authors: Perlusz Andrea 
Published: February 2021

Összefoglaló. Az inkluzív intézményvezetés fogalma a 2000-es évek
elején került be a pedagógiai szakmai gondolkodásba annak a felismerésnek az
eredményeképpen, hogy a nevelési-oktatási intézmények vezetőinek meghatározó
szerepük van az inklúziós politikák átültetésében, a befogadó gyakorlat és az
inkluzív iskolai kultúra eredményes megvalósításában (Ainscow–Sandil
2010; Ruairc 2013). A tanulmányban bemutatott kutatás, melyet a
European Agency for Special Needs and Inclusive Education 2019-ben indított
(Supporting Inclusive School Leadership, SISL), három
szakaszban vizsgálja a részt vevő tagállamok szakpolitikáit, illetve intézményi
gyakorlatait. A projekt célja az inkluzív intézményvezetést elősegítő
szakpolitikai környezet bemutatása, azoknak a kompetenciáknak a leírása, melyek
a sikeres inkluzív intézményvezetőt, illetve intézményvezetést jellemezhetik,
illetve a képzés, továbbképzés és a professzionális fejlődés lehetőségeinek
támogatása önértékelő eszköz kidolgozásával.
Summary. The concept of inclusive school leadership was introduced
into pedagogical professional thinking in the early 2000s, as a result of the
realisation that the leaders of educational institutions have a decisive role in
transposing inclusive policies, effective implementation of inclusive practices
and inclusive school culture (Ainscow and Sandill, 2010; Ruairc,
2013). The research presented in the study, launched by the
European Agency for Special Needs and Inclusive Education in 2019
(Supporting Inclusive School Leadership SISL) examines the
policies and institutional practices of the participating member states in 3
phases. The aim of the project is to present a policy environment conducive to
inclusive institution-management, to describe the competences that can
characterise a successful inclusive leader of institution or institution
management, and to support the opportunities for training, further training and
professional development by developing a self-assessment tool.
A fogyatékosság reprezentációja az általános iskolák magyar irodalom tananyagához kapcsolódó irodalmi művekben
Authors: Gulya Nikoletta Mária , Fehérvári Anikó 
Published: February 2021

Összefoglaló. Az irodalmi alkotások jól alkalmazhatók az oktatásban
arra, hogy a tanulók megismerkedjenek a társadalom sokszínűségével és annak
kulturális összefüggéseivel, amennyiben megfelelően ábrázolják ezeket a
társadalmi csoportokat.
Jelen írás célja, hogy a tartalomelemzés módszerével feltárja és elemezze a
magyar általános iskolák tananyagához kapcsolódó irodalmi szemelvénye
fogyatékossággal kapcsolatos tartalmait.
A kutatás eredményei rávilágítanak, hogy a vizsgált irodalmi szemelvényekben a
fogyatékossággal élő szereplők rendkívül alulreprezentáltak és sztereotip módon
ábrázoltak, ezáltal erősíthetik a tanulók fogyatékossággal élő emberekkel
kapcsolatos előítéleteit, így feldolgozásukkor hangsúlyt kell fektetni a
sztereotip tartalmak tisztázására.
Summary. Literary works are a readily available resource in
education to help students learn about the diversity of society and its cultural
contexts, as long as they depict these social groups appropriately.
The study aimed to identify the different recurring patterns of the disability
conception within the content of youth literature in primary education,
employing content analysis.
The results of the research reveal that in the examined literary works people
with disabilities are extremely underrepresented and depicted stereotypically.
This way of representation can reinforce students’ negative attitude towards
people with disabilities, therefore the stereotypical content should be
clarified and discussed during the lessons.
A kisiskolák és lehetőségeik
Authors: Andl Helga 
Published: February 2021

Összefoglaló. A tanulmány a kisiskolák magyarországi helyzetével
foglalkozik, azok komplex társadalmi beágyazottságával, a hátrányos helyzet, a
méltányosság és az inklúzió kérdéskörével, oktatáspolitikai és pedagógiai
kérdésekkel. Területi és oktatás-statisztikai adatokra támaszkodva bemutatjuk az
alacsony létszámmal működő baranyai iskolák egyes jellemzőit, az elmúlt másfél
évtizedben lezajlott történéseket. Az intézményi kört érintők között
hangsúlyosan jelenik meg az iskolabezárás, melynek folyamatát két iskola
közelmúltban zajló megszűnésével foglalkozó esettanulmányunkra építve mutatjuk
be. Működő gyakorlatokat keresünk arra, hogy a tanulók támogatásának, az
inkluzív tanítási környezet kialakításának milyen lehetőségeit rejtik a – nem
egy esetben összevont tanulócsoportos – kisiskolák.
Summary. This study attempts to uncover and understand the many
different factors of small schools in Hungary: the role of disadvantage, how and
if equity and inclusion can be realised, and the complex ways in which society
perceives these institutions. For these social determinants are multifaceted,
further aspects of pedagogy and education policy will be discussed too. Based on
regional and education statistics related data, the paper explores the main
features and the recent history of those primary schools in Baranya which
operate with a low number of students. In this recent history of small schools,
there is a clear emphasis on school closures, a process that we will focus on
through our case study of two contemporary school closures in the area. With
this analysis, our goal is to present several examples of embedded, functioning
practices in small schools – many of which operate with multigraded study groups
– that aim to support pupils and create an inclusive environment.
Examination of the perceptions of self-sufficiency and burnout levels of students of the sports science faculty during the COVID-19 pandemic
Authors: Tüfekçi Şakir , Böke Hulusi 
Published: February 2021

Background and Study Aim. To determine the perception of self-sufficiency and burnout levels of students studying in the faculty of sports sciences during the Covid-19 pandemic.
Material and Methods. This cross-sectional descriptive-correlational study was performed in the Sports Science Faculty of İnönü University of Turkey which forms the universe of the study. In addition, "Perception of General self-sufficiency" and "Burnout Level Scale" were used in the study. T-test and One-Way ANOVA tests were used to perform the differential analysis and Pearson Product Moment Correlation analysis was used to determine the correlation between variables. In addition, regression analysis was performed by creating dummy variables in order to predict the dimensions.
Results. The students’ general self-sufficiency perception scores were found to be above average and their burnout levels were found to be below average. It was observed that the general self-sufficiency perception scores differed in terms of the class variable, and the burnout level scores differed in terms of class, family income level and studied department variables. In the correlation analysis that was carried out, it was understood that there was a mutually inverse and significant correlation between the dimensions of the scale. With the regression analysis, it was determined that the first-grade level scores were an independent significant predictor for both self-sufficiency and burnout scores, and the lowest income level scores were only an independent predictor for burnout level scores.
Conclusions. It can be said that students at the faculty of sports sciences are not overly affected by the Covid-19 Pandemic and the results are as desired. It can be suggested that the perception of self-sufficiency and burnout scores to be correlated and predicted with different variables.