bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of Stress on Students Academic Performance at Secondary School Level at District Vehari
Authors: Saqib Muhammad , Rehman Kaleem Ur 
Published: February 2018

The title of the existing topic is “Impact of stress on student’s academic performance at secondary school level”. The important motives of this study are to explore the stress impact on the students’ academic performance. Stress has a key role in student’s academic performance. This study was to focus on the negative impact on the student’s academic performance. The purposes of the study were to investigate; firstly, the type of stress linked with student’s performance; secondly, to evaluate the impact of stress on the academic performances of students; and thirdly, differentiate the impacts of stress on the academic performances of both gender students. To achieve the above-mentioned objectives of the study, the researcher can suggest a reasonable solution for the impact of stress on student’s academic performance. The data collected for this topic, has been gathered from all the secondary schools in District Vehari. In this study the researcher was taken a sample of (n=10) secondary schools from each Tehsil of District Vehari. The researcher was further divided (n=10) secondary schools into two groups (n=5) males and (n=5) female secondary schools. The researcher was taken (n=15) students from each secondary school selected as sample. The researcher was used simple random sampling technique for data collection. Five points Likert-scale used in this research. 99% respondents are responding about the factor of stress impact on their academic performance. After collecting data, it was analyzed by using Statistical Package for Social Sciences (SPSS) version 20. The tool (questionnaire) used for the collection data was 0.850 Cronbach alpha. In this study, different tests were applied as to factor analysis and regression. Generally, the major findings of study divulged that there are significant impacts of stress on student’s academic performance. This study concluded that major factors of stress among the students are teacher and parents.
Individuell «automagisk» tilbakemelding på skriftlig eksamen
Authors: Mirmotahari Omid , Berg Yngvar 
Published: February 2018

ABSTRACT: I denne artikkelen viser vi et nytt system for å kunne gi delvis automatisk og formativ tilbakemelding til studenter på skriftlig eksamen. Vi vil belyse en ny måte å gi individuell tilbakemelding rettet mot hver enkelt students læring og fremtidige eksamensforberedelser Den faglige tilbakemeldingen er utviklet for å gi studentene større mulighet til å reflektere over egen besvarelse. Systemet er bygd opp slik at det bare medfører marginalt økt tidsbruk for sensurering ved å bruke systemet. Avslutningsvis har vi tatt med studentenes tilbakemeldinger på verdiskapningen dette systemet gir. Keywords: Digital vurdering, automatisk tilbakemelding, formativ tilbakemelding.
Influence of compressing pressure on macro void formation of carbon monolith for methane adsorption
Authors: B Narandalai , Shim W G , Balathanigaimani M S , Moon H 
Published: February 2018

Carbon monoliths for adsorbed natural gas (ANG) storage were prepared from Mongolian anthracite-based activated carbons using carboxy-methyl cellulose as a binder under different compressing pressures. Nitrogen adsorption/desorption experiments were carried out to obtain the specific surface area, pore volume, and pore size distribution of the monoliths. Methane adsorption experiments on the carbon monoliths were conducted at different temperatures and pressures up to around 3.5 MPa in a high pressure volumetric adsorption apparatus. As expected, adsorption results indicated that the methane adsorption capacity of the carbon monoliths increased with increasing specific surface area and packing density. The maximum volumetric adsorption of methane was observed as 163 V/V at 293 K and 3.5 MPa on a carbon monolith sample, PMAC1/2-3-65, that does not have the highest specific surface area but relatively high packing density comparing with other monoliths, which implies that two physical properties contribute contradictorily to the methane adsorption capacity. Based on experimental results, the carbon monoliths prepared from Mongolian anthracite-based activated carbons can be promising media for ANG storage application.
Vliv kombinovaného vytrvalostního/silového tréninku na variabilitu srdeční frekvence u mužů s chronickou ischemickou chorobou srdeční
Authors: Tomíčková Jitka , Jančík Jiří , Dobšák Petr , Siegelová Jarmila , Panovský Roman 
Published: February 2018

31 men with chronic coronary artery disease (mean age 64 ± 11 years, mean body weight 83 ± 10 kg, mean height 177 ± 6 cm, mean ejection fraction of left heart ventricle 47 ± 11%), were examined before and aft er three months lasting aerobic training combined (from 3rd week) with strength training. Symptom-limited spiroergometry was provided before and aft er the training period. Th e training (exercise unit) was performed three times a week. Before exercise testing, short-term heart rate variability (HRV) analyses of all subjects were obtained. Frequency domain HRV indexes were determined in the morning during quiet periods under metronome controlled breathing. Total power (TP), low-frequency spectral component HRV (LF, 0,05–0,15 Hz), high-frequency spectral component HRV (HF, 0,15–0,5 Hz) and lowfrequency-to-high frequency (LF/HF) ratio were measured for 5 minutes in the monitoring. Twelve weeks lasting combined endurance/strength training increased HRV (HF, LF and TP) in men with stable chronic coronary disease .
Porovnání vlivu hyperoxie na krátkodobý anaerobní výkon v nížině a vyšší nadmořské výšce
Authors: Suchý Jiří , Novotný Jiří , Tilinger Pavel 
Published: February 2018

The article compares the infl uence of inhaling concentrated oxygen on short-term repeated performance in lowlands and at high altitudes above sea level (1 835 m a.s.l.). Th e source of concentrated oxygen was Oxyfi t. Th e subjects (n=10) completed a total of four tests comprised of two Wingate tests at a 10 minute interval. Two tests were carried out at a low altitude and two at a higher altitude above sea level. During the recovery period between tests the monitored subjects inhaled Oxyfi t or a placebo (at both the low and high altitudes). Th e study showed signifi cantly (p < 0.05) higher performance of the repeated Wingate test aft er inhaling concentrated oxygen in comparison with the placebo at both low and higher altitudes. Inhalation of concentrated oxygen aff ects performance to a greater extent at the higher altitude compared to that of the low altitude.
Budoucnost olympismu?
Authors: Dovalil Josef , Rychtecký Antonín 
Published: February 2018

The article briefl y reminds the original ideas of Pierre de Coubertin; they helped him to create a certain conception of Olympism (the unity of sport, education and culture) which became the ground of Olympic Movement and organization of Olympic Games in the New Era. Olympism is nowadays extended in the whole world and being accepted as a basic philosophy of modern sport. It contributes signifi cantly to enhance as constituting a full-value component of culture. Th e authors present some symptom of modern often very pragmatic sport and the reasons of the changes in it. Th ey indicate the necessity to formulate - in a new situation - the values, purpose and aims of sport in preserving and enriching the principal Olympic values. Such substantiation appears as not only a theoretical requirement, it is in interest of sport itself. Sport deserves not only a public recognition and support since it is satisfying diff erent social interests, but it cultivates members of democratic societies in the sense humanistic desiderata. Th e system of Olympic values may contribute to those ideas, based on Coubertin visions, enriched by so far obtained experience and interpreted in the contemporary conditions. Olympism in the widest sense of sport practice and as a philosophy of sport may at those conditions fi nd its proper place in the future social development.
Úroveň rychlostních schopností děvčat šestých tříd na základní škole s rozšířenou výukou tělesné výchovy
Authors: Vala Roman , Valová Marie , Litschmannová Martina 
Published: February 2018

This report sums up the results of our research, carried out between the years 2000 and 2009, into the sprinting abilities of year six female students undergoing additional physical education classes. Test results of motor skills are an important source of information which can be further used in structuring the process of physical education and sports training. Moreover, such tests can be widely used in physical education research, in physical training practice and as a means of selecting students gift ed at sports. In total, 104 female secondary school students were tested. In brief, it is possible to conclude that throughout the period of our research, these year six female students had statistically signifi cant diff erences sprinting abilities. Th is is an important fi nding for trainers and teachers as sprinting ability has a great impact not only on other athletic disciplines but also plays a role in other fi elds of sport. Our research results can be compared to those of other year six students of similarly specialized schools in tests of sprinting abilities (50 metres sprint).
Optimalizace odhodové vzdálenosti pro test přesnosti hodu na cíl u mládeže věkové kategorie 11–14 let
Authors: Zahradník David , Vaverka František 
Published: February 2018

Throw accuracy is not being currently quite developed within school PE lessons; it is being developed only as part of skills of a particular sports discipline. Th is shortcoming may stem from the lack of a suitable test assessing this skill. In the literature we have seen only three throw accuracy tests intended for school youngsters (Bös 2001, Mecner 1975, Měkota; Blahuš 1983). Th ese tests consist of a few repeated series of throws, failing to distinguish a throwing distance for boys and girls and even age groups, and requiring a rather complicated graphic record of successful target hits that cannot be assessed easily and quickly during a PE lesson. Th e purpose of the study is to create a test of measuring throw accuracy at a target eliminating the aforementioned shortcomings. Th e optimisation of a throwing distance is based on the condition of a normal Gaussian distribution of data related to individual throwing distances, and on the condition that an average number of target hits within a concrete throwing distance will be close to 7.5 target hits. To assess the importance of the diff erence of the observed throwing distances one-factor ANOVA (One Way Analysis of Variance) was used. Th e assessed group consisted of 105 boys and 114 girls of three randomly selected schools in Ostrava between 11 and 14 years old. Th ree throwing distances were determined (boys 6; 8; 10 m, girls 3.5; 5.5; 7.5 m) in combination with a vertical round target of 0.7 m in diameter. Th e tested person used an overarm throwing technique and made 20 throws for each throwing distance. Th e test score was the number of the target hits from the 6th - 20th throw (training: 1st -5th throw). Th e optimum throwing distances were identifi ed for the accuracy test of a target throw for boys of the 11-12 year category (6 m), 13-14 year category (8 m), for girls of the 11-12 year category (5.5 m), 13-14 year category (7.5 m) while using a target of 0.7 m in diameter.
Účinky tchaj-ťi čchüan na autonomní nervové regulace u studentů Masarykovy univerzity
Authors: Ondruška Titus , Novotný Jan 
Published: February 2018

Taijiquan is scientifically studied from many views of it’s positive infl uence on human health. Taiji as an exceptable intensity form of aerobic exercise for middle age and old people. Taiji as a form of exercise benefi cial for general inprovement of motor function at seniors. Taiji and balance control at old persons in connection to falls. Infl uence of taiji practise on the quality of sleep at people with sleep disturbances. In prosecution to many experiments specialized on the positive eff ect of taijiquan on the heart function (for example taiji and it’s harmonizing eff ect on blood preasure) we have realised an experiment focused on the connection of taiji practise and autonomous regulation of heart function. We tried to prove that one year long practise of a particular form of taiji has the eff ect on the autonomous regulation of the heart. Especially on higher activity of parasympathetic system – nervus vagus. Th is eff ect have been proved by Väänänen at al, 2002 at the level of short-time change. We have used system VariaCardio TF-4 with telemetric transmision of the pulse rate able to measure and analyse spectral analysis of heart rate variability. Participants were 32 Masaryk university students aged between 19 and 25. Th e data we have collected prove that we do not disapprove hypothesis of the infl uence of taijiquan practise on the activity of nervus vagus. Thus we have succeeded in proving the eff ect of taiji on heart regulations even at young people.This fi ndings can even support the idea of using taiji as an eff ective and at the same time available form of training of cardiovaskular system at poeple suff ering from diseases of this kind.
Hodnocení vlivu vzdělání na soběstačnost a mobilitu seniorů
Authors: Vejrážková Bohumila 
Published: February 2018

The purpose of this research is to determine the infl uence of level of education to the self-suffi ciency and mobility in seniors, and to map the prevalence of disability and mobility limitations in both elderly men and women. For this study we compiled a random selection of people over 75 years. Th ey were tested with the “Get up and go“ test to assess their habitual mobility and by using the Barthel index, we set their level of dependence in ADL (activities of daily living). Th rough a personality questionnaire, we obtained personal data on the subjects. Using statistical methods, we compared the data obtained from the tests with the personal data from the researched group. Data is still being obtained and processed, therefore we only have preliminary conclusions.
Problematika skupinové koheze v psychologii sportu
Authors: Šiška Pavol , Slepička Pavel 
Published: February 2018

The article presents a review of research on group cohesion; an important social-psychological construct especially relevant to sport psychology where group cohesion is often considered as a crucial factor in the performance of sport teams. First, the article focuses on theoretical approaches to a delimitation of group cohesion as a diverse construct which has been defined in various ways. The article also shows the importance of cohesion and its dynamics in the field of sport where especially the performance in the team sports seems to be directly related to the relative level of group cohesion. Furthermore, the article presents diagnostic possibilities of group cohesion useful in coaching practice and compares the results of various research applications of these methods in the field of sport. Finally, the authors suggest possible directions in further research of this construct which has not been sufficiently studied in the Czech context.
Smečované podání u volejbalistů kategorie kadetů
Authors: Zahálka František , Malý Tomáš , Čada Miroslav , Malá Lucia 
Published: February 2018

The aim of the study was to determine the relationship between jump serve velocity achieved in contact with the ball and a model height of the jump as an indicator of explosive strength of lower extremities and to correlate these values. The monitored group consisted of 169 players (n = 172, age 15.95 ± 0.75 year, body height 185.44 ± 6.9 cm, body weight 71.92 ± 7.92 kg). Before the measurement, the players undertook a jump test, when, in a model situation, they attempted to achieve maximum jump height after a run-up. The highest serve velocity value was 105.9 km.h-1, while the lowest value was 56.3 km.h-1 (difference by 46.8 %). The measured maximum values were transformed into percentile norms (50th percentile P50 = 79.9 km.h1 ). Percentile distribution for jump serve velocity and the jump enables us, with respect to a relatively high number of tested players, to consider the stated values as normative and to compare other players, as well. It appears that the correlation of jump height is a good indicator of the dispositions for jump serve implementation in terms of the ball velocity.
Kineziologická a kinematická analýza tenisového podání pomocí povrchového EMG a SIMI Motion – kazuistika
Authors: Bernaciková Martina , Hlaváčová Silvie , Kalichová Miriam 
Published: February 2018

In the introduction, we described determinants of performance and we completely characterize the tennis serve. In our research, we carry out a kinematic and kinesiology analysis of tennis serve. Measurements were performed using 3D kinematic analysis system SIMI Motion and kinesiological analysis using DATA LOGGER MIE device, which measures the surface tension of the muscle. The result of the work can provide appropriate advice on treatment quality and the techniques of tennis serve which is clearly the most important tennis stroke.
Telesné zloženie a distribúcia tekutín u vrcholových hádzanárok
Authors: Malá Lucia , Malý Tomáš , Zahálka František , Tůma Martin , Teplan Jaroslav 
Published: February 2018

The topic of body composition in sport requires a great deal of attention. Excessive adipose tissue acts as a dead weight, especially in situations characteristic for handball – jumps, when body weight must be repeatedly lift ed against gravity during locomotion and jumping. Th e purpose of the study was to determine body composition and distribution of liquids in individual body segments in a national team of female handball players (n = 16, age 24,0±3,5 years, body height 176,0±6,5 cm, body weight 72,5±8,3 kg). Body composition was measured by means of a multifrequency bioimpedance method InBody (Biospace). Th e examined parameters were the following: absolute and relative amount of fat free mass (FFM and FFM/BW), percentage of fat mass (FM), absolute and relative amount of body cell mass (BCM and BCM/TH), total body water (TBW) distinguishing extracellular water (ECW) and intracellular water (ICW) and distribution of body liquids in individual segments. In the monitored group, we recorded the mean value of TBW = 42,58±3,99. Th e mean value of ICW was 28,92±2,53 l (67.92 %). Th e mean value of ECW was 13.66±1,57 l (32,08 %). FM made 20,16 ± 4,08 %. FFM for the whole sample was 57,82±5,27 kg; in relative values it was 0,80±0,04. Th e mean proportion of BCM in the monitored group was 40,47±3,55 kg, in relative values 0,56 ± 0.03. Monitoring distribution of liquids in the extremities showed a signifi cant diff erence only in the upper extremities (t15 = 5,95; p 0,01). In the lower extremities, we found out an equal proportion of liquids with an insignifi cant diff erence between the observed segments (t15 = 0,41; p > 0,05). Individual parameters of body composition indicate values corresponding to elite sport. Interindividual assessment revealed diff erences in terms of player’s function; however, when assessing parameters of body composition, it is not possible to express clearly the trend in dep endence on player’s function. Results of our study may help as a certain top standard for comparison of body composition in female players of a lower performance level with the aim of optimization and compensation of diff erences.
Kondičné schopnosti v štruktúre limitujúcich ukazovateľov výkonu karatistov
Authors: Vanderka Marián , Longová Katarína 
Published: February 2018

Th e aim of the presented work is to contribute to the clarifi cation of the structure of sport performance limiting factors within karate, out of which the following were chosen: disjunctive reaction time lower extremities on visual stimulus and velocity of strike seiken čoku cuki from the perspective of hierarchical formation of the mathematical model. Th e measured values were processed and the paired comparison analysis was used to fi nd the dependency rate between the particular variables. We used both regression and partial correlation analysis for creating the empirical model of the structure of selected motoric factors, which are limiting the performance in karate. On the “second level factor” concerning dependent variables which we have selected, the following motoric factors proved to be signifi cant: standing long jump, 400m run, overhead medicimbal throw and No of sit ups during 1 min. period. On the “third level factor” it were: 50m dash from standing start, No of push ups in 10 second, shuttle run 10x5m, pull ups and isometric endurance in upright possition of pull ups, calculation of maximal oxygen consumption (VO2 max).
Životní způsob a jeho vybrané determinanty u dětí s onkologickým onemocněním
Authors: Vyhlídal Tomáš , Ješina Ondřej , Holická Kateřina 
Published: February 2018

Children and young people with oncological diseases (OD) after intensive treatment (the so-called period of remission) are a group with special needs and problems. Those are the most immediately associated with the treatment of OD. Among the return among peers after the long separation, often shy around and concern with the adoption, the formation of private persons during the period of treatment, often changing the value system, a change of lifestyle, etc. Just because the way this audience with the perspective of the determinant, which affect it as essential, is the subject of our study. The aim of our investigation is to find out and describe the specificity of particular selected determinants for future remediation of potential risks. The main research instrument is the questionnaire known as the disHBSC (“dis” means a group of people with disabilities and health handicaps; Health Behaviour of School-aged Children). We conducted a pilot survey for youth groups with the OD, which are provided by the interesting results for further processing.
Specifika a komparace přípravy vrcholových cyklistů s tělesným postižením
Authors: Zaoral Marek , Rybová Lucie , Ješina Ondřej 
Published: February 2018

Road cycling is a widespread sport. Training preparation is an essential component of the system applicable in the peak of cycling. Our research is focused on the training differences of top road cyclists with disabilities and without disability. There were total 6 respondents in this research, 3 cyclists with different types of disability and 3 cyclists without disabilities with international experiences. The selection of respondents was intentional. The results are noticeable differences in the preparation of training both groups. Most obvious differences are reflected in the overall support (financial, material and team support), absence of stress testing in the groups of cyclists with disability and also in the composition of pre-season training and in the use of flexible forms of organization during training. It was also found that selected athletes with disability have a higher number of training sessions with the same volume at weekly training mode.
Českoslovenští sportovci a jejich účast na Pershingově olympiádě
Authors: Tlustý Tomáš 
Published: February 2018

The presented article deals with the participation of Czechoslovak sportsmen in Inter-Allied Games. This great sports action, which was mainly organized by the YMCA, took place in Paris in 1919 to celebrate the victorious states of WWI. From the newly founded Czechoslovakia the wrestlers, tennis players, football players, fencers and rowers took part. The Czechoslovak sportsmen achieved a lot of great results, for example the first place in football tournament. Except from comparison of results of Czechoslovak and foreign sportsmen the Inter-Allied Games had a great impact for the development of physical education and sport in interwar Czechoslovakia. The Czechoslovakian participants started to cooperate with the American team coach – the Czech-American Josef Amos Pipal, who contributed to sports development in Czechoslovakia in early 1920s.