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Journal of Human Kinetics

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https://www.readbyqxmd.com/read/28031773/developing-talented-soccer-players-an-analysis-of-socio-spatial-factors-as-possible-key-constraints
#1
Jaime Serra-Olivares, Juan C Pastor-Vicedo, Sixto González-Víllora, Israel Teoldo da Costa
Most studies on the identification and development of soccer talent have been one-dimensional in nature. Although some multi-dimensional analyses have been conducted, few research studies have assessed in any depth the socio-spatial factors influencing talent development. The aim of this particular study was to analyse variations in the international representation of clubs (n = 821) and countries (n = 59) in the development of players who took part in the 2014 FIFA Soccer World Cup. Clubs and countries were ranked and divided into quartiles according to the number of players developed between the ages of 15 and 21 (clubs and countries that developed players for at least three years between these ages) and the number of official league matches played by these players up to the age of 23...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031772/the-chronotype-of-elite-athletes
#2
Michele Lastella, Gregory D Roach, Shona L Halson, Charli Sargent
The aims of this study were (i) to compare the chronotype distribution of elite athletes to a young adult population and (ii) to determine if there was a tendency for athletes to select and/or participate in sports which suited their chronotype. A total of 114 elite athletes from five sports (cricket, cycling, hockey, soccer and triathlon) participated in this study. The participants' chronotype, sleepiness, sleep satisfaction and sleep quality were determined using the Horne and Östberg Morningness and Eveningness questionnaire, the Epworth Sleepiness Scale and questions concerning their sleep satisfaction and quality...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031771/a-comparison-of-physical-education-students-motivation-using-polish-and-turkish-versions-of-the-academic-motivation-scale
#3
Agnieszka Ardeńska, Rajmund Tomik, Serkan Berber, Burak Düz, Barış Çivak, Uğur Çalişkan, Joanna Ogrodnik
Motivation is an important phenomenon in the realm of education, particularly in the university fields connected with physical education and sport, where it is necessary to accommodate and balance intellectual abilities and physical fitness. The present study tested motivation levels among university students in the fields connected with physical education and sport in Poland and Turkey. It was based on the Self-Determination Theory (Deci and Ryan, 1985), namely intrinsic motivation, extrinsic motivation and amotivation which impact human behaviour...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031770/soccer-players-cultural-capital-and-its-impact-on-migration
#4
Jožef Križaj, Bojan Leskošek, Janez Vodičar, Mojca Doupona Topič
The purpose of this study was to identify factors that constituted the cultural capital among soccer players. We assumed that in the increasingly globalized world of professional soccer, a player's success would often depend on migrating and adjusting to life in other countries. Willingness to migrate and successful adjustment are tied to player's previous attitudes and/or behaviours (habitus), significant support from others, including family members, and previous experiences and success in sports and education...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031769/quality-perception-of-the-2012-world-indoor-athletics-championships
#5
Kerem Yildirim Simsek
The objective of this study was to compare the views of spectators concerning the quality perception of the World Indoor Athletics Championships. The study group consisted of 568 spectators who watched the events. A measurement scale of event quality in spectator sports (SEQSS) developed by Ko et al. (2011) was used as a data collection tool in the study. In order to determine the views of the spectators concerning the quality of the Indoor Athletics Championships, the dimensions constituting the scale were compared according to the demographic features of the sample group...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031768/optimization-of-game-formats-in-u-10-soccer-using-logistic-regression-analysis
#6
Mario Amatria, Daniel Lapresa, Javier Arana, M Teresa Anguera, Belén Garzón
Small-sided games provide young soccer players with better opportunities to develop their skills and progress as individual and team players. There is, however, little evidence on the effectiveness of different game formats in different age groups, and furthermore, these formats can vary between and even within countries. The Royal Spanish Soccer Association replaced the traditional grassroots 7-a-side format (F-7) with the 8-a-side format (F-8) in the 2011-12 season and the country's regional federations gradually followed suit...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031767/mechanical-differences-between-barbell-and-body-optimum-power-loads-in-the-jump-squat-exercise
#7
Irineu Loturco, Lucas A Pereira, Vinicius Zanetti, Katia Kitamura, César C Cal Abad, Ronaldo Kobal, Fabio Y Nakamura
This study compared the values of bar-peak force (PFBar) and power (PPBar), body-peak force (PFBody) and power (PPBody) and bar-mean propulsive power (MPPBar) in different jump-squat (JS) conditions: unloaded condition (UC); bar-loaded condition (BLC) and optimum bar-MPP condition (OBC). Twenty-five soccer players performed the JS using a bar with negligible mass (UC), using the Smith-machine bar (BLC) and using the load capable of maximizing the bar-MPP (OBC). The PFBody was significantly higher in the UC (2847...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031766/performance-assessment-in-water-polo-using-compositional-data-analysis
#8
Enrique García Ordóñez, María Del Carmen Iglesias Pérez, Carlos Touriño González
The aim of the present study was to identify groups of offensive performance indicators which best discriminated between a match score (favourable, balanced or unfavourable) in water polo. The sample comprised 88 regular season games (2011-2014) from the Spanish Professional Water Polo League. The offensive performance indicators were clustered in five groups: Attacks in relation to the different playing situations; Shots in relation to the different playing situations; Attacks outcome; Origin of shots; Technical execution of shots...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031765/physical-performance-during-water-polo-matches-the-effect-of-the-players-competitive-level
#9
Petros G Botonis, Argyris G Toubekis, Theodoros I Platanou
The purpose of the study was to compare playing intensity and performance changes within a water-polo match in players of different competitive levels. High-level (n = 7) and lower-level (n = 7) players performed a progressively increasing speed test of 5 x 200 m swimming and speed corresponding to lactate concentration of 4.0, 5.0 and 10.0 mmol•l-1 was calculated. Repeated sprint ability (8 x 20 m) was tested at pre-, the middle and post-match and a 400 m swimming test was completed at pre and post in five water-polo matches...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031764/the-effects-of-modifying-the-distance-of-the-penalty-shot-in-water-polo
#10
Francisco Manuel Argudo, Roberto Ruiz-Barquín, Pablo José Borges
The aim of this study was to determine the effects of changing the distance of the penalty shot in water polo from 4 to 5 m. While a shorter distance made the penalty shot more effective, it also reduced the use of this sanction. A total of 192 matches played in the 2003 and 2007 Water Polo World Championships were recorded. The sample included 278 penalty shots in both tournaments. Notational analysis using a longitudinal correlational and descriptive design was employed to determine whether a longer distance increased the number of sanctioned penalties (81 vs 197) and caused a non-significant decrease in scoring efficiency (7...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031763/evolution-of-determinant-factors-of-repeated-sprint-ability
#11
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/28031762/effects-of-fatigue-on-throwing-performance-in-experienced-team-handball-players
#12
Alberto Nuño, Ignacio J Chirosa, Roland van den Tillaar, Rafael Guisado, Ignacio Martín, Isidoro Martinez, Luis J Chirosa
The purpose of this study was to investigate the effect of central and peripheral physiological fatigue on throwing accuracy and ball release velocity in team handball. Twenty male subjects (age 24.7 ± 3.9 yrs, body mass 88.5 ± 5.0 kg, body height 1.86 ± 0.05 m, training experience 12.7 ± 3.8 yrs) from one handball team participated in this study. The participants completed four sets of eight laps of a circuit that consisted of specific team handball drills/exercises, with decreasing recovery times between the laps in each set in order to induce physiological fatigue...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031761/physiological-responses-during-the-time-limit-at-100-of-the-peak-velocity-in-the-carminatti-s-test-in-futsal-players
#13
Leandro Teixeira Floriano, Juliano Fernandes da Silva, Anderson Santiago Teixeira, Paulo Cesar do Nascimento Salvador, Naiandra Dittrich, Lorival José Carminatti, Lucas Loyola Nascimento, Luiz Guilherme Antonacci Guglielmo
The aim of this study was to investigate the physiological responses during the time limit at the intensity of the peak velocity of the Carminatti's test (T-CAR). Ten professional futsal players (age, 27.4 ± 5.8 years, body mass, 78.8 ± 8.5 kg, body height, 175.8 ± 6.8 cm, body fat mass, 14.1 ± 2.6%) took part in the study. The players performed three tests, with an interval of at least 48 hours, as follows: the T-CAR to determine the peak velocity and the maximal heart rate; an incremental treadmill protocol to determine the maximal physiological responses; and a time limit running test at the peak velocity reached in the T-CAR...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031760/the-effect-of-specific-sling-exercises-on-the-functional-movement-screen-score-in-adolescent-volleyball-players-a-preliminary-study
#14
Paweł Linek, Edward Saulicz, Andrzej Myśliwiec, Monika Wójtowicz, Tomasz Wolny
The existing data indicate that the result of the Functional Movement Screen (FMS) test influences the likelihood of subsequent injury in professional athletes. Therefore, exercises increasing test scores of the FMS may be useful at various stages of sports activity. This study evaluated the effects of the NEURAC sling exercises method on the FMS test score in teenage volleyball players. The study was conducted on 15 volleyball players aged 14 years. The FMS test was performed three times interspersed with a two-month interval...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031759/evaluation-of-the-effects-of-neuromuscular-electrical-stimulation-of-the-lower-limbs-combined-with-pulmonary-rehabilitation-on-exercise-tolerance-in-patients-with-chronic-obstructive-pulmonary-disease
#15
Cezary Kucio, Justyna Niesporek, Ewa Kucio, Dominika Narloch, Bartosz Węgrzyn
Chronic obstructive pulmonary disease (COPD) is a systemic disease with multiple extrapulmonary manifestations including impeded skeletal muscle function, leading to decreased muscular strength and endurance in patients with COPD. Pulmonary rehabilitation eases the symptoms of the condition and produces increased muscular endurance. Neuromuscular electrical stimulation (NMES) may serve as a treatment alternative to traditional pulmonary rehabilitation. The aim of the study was to assess the effects of NMES combined with pulmonary rehabilitation on exercise tolerance in patients in comparison with pulmonary rehabilitation alone...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031758/somatic-endurance-performance-and-heart-rate-variability-profiles-of-professional-soccer-players-grouped-according-to-age
#16
Michal Botek, Jakub Krejčí, Andrew J McKune, Iva Klimešová
This cross-sectional study compared somatic, endurance performance determinants and heart rate variability (HRV) profiles of professional soccer players divided into different age groups: GI (17-19.9 years; n = 23), GII (20-24.9 years; n = 45), GIII (25-29.9 years; n = 30), and GIV (30-39 years; n = 26). Players underwent somatic and HRV assessment and maximal exercise testing. HRV was analyzed by spectral analysis of HRV, and high (HF) and low (LF) frequency power was transformed by a natural logarithm (Ln)...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031757/leukocyte-populations-are-associated-with-heart-rate-variability-after-a-triathlon
#17
Germán Hernández Cruz, José Naranjo Orellana, Adrián Rosas Taraco, Blanca Rangel Colmenero
The purpose of this study was to analyze cellular immune components and their association with heart rate variability in triathlon athletes. Twelve athletes were included (age 36.41 ± 5.57 years, body mass 81.84 ± 10.97 kg) and blood samples were taken one week before, immediately, at 2 and 48 hours, and one week after competition. Total lymphocytes and their subpopulations, neutrophils, basophils, eosinophils and monocytes were analyzed. At the same time, heart rate variability was recorded for 30 minutes using Polar Team2®...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031756/does-the-mthfr-a1298c-polymorphism-modulate-the-cardiorespiratory-response-to-training
#18
Paweł Cięszczyk, Aleksandra Zarębska, Zbigniew Jastrzębski, Michał Sawczyn, Izabela Kozakiewicz-Drobnik, Agata Leońska-Duniec, Mariusz Kaczmarczyk, Agnieszka Maciejewska-Skrendo, Piotr Żmijewski, Grzegorz Trybek, Wojciech Smółka, Jan Pilch, Katarzyna Leźnicka, Ewelina Lulińska-Kuklik, Marek Sawczuk, Myosotis Massidda
The 5,10-methylenetetrahydrofolate reductase gene (MTHFR) A1298C polymorphic variant is a candidate to explain the individual differences in trainability and response to exercise training. Therefore, the aim of the study was to verify whether the A1298C polymorphism influenced the aerobic and anaerobic performance as well as body and mass composition in young Polish women following low-high impact aerobic exercise training. Two hundred and one women aged 21 ± 1 years (range 19-24) were included in the study...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031755/performance-effects-of-repetition-specific-gluteal-activation-protocols-on-acceleration-in-male-rugby-union-players
#19
Lorna Barry, Ian Kenny, Thomas Comyns
Warm-up protocols have the potential to cause an acute enhancement of dynamic sprinting performance. The purpose of this study was to evaluate the effects of three repetition specific gluteal activation warm-up protocols on acceleration performance in male rugby union players. Forty male academy rugby union players were randomly assigned to one of 4 groups (control, 5, 10 or 15 repetition gluteal activation group) and performed 10 m sprints at baseline and 30 s, 2, 4, 6 and 8 min after their specific intervention protocol...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031754/assessing-reactive-strength-measures-in-jumping-and-hopping-using-the-optojump%C3%A2-system
#20
Robin Healy, Ian C Kenny, Andrew J Harrison
The aim of this study was to assess the concurrent validity of the Optojump™ system (Microgate, Bolzano, Italy) versus a force platform in the estimation of temporal and reactive strength measures. In two separate investigations, twenty physically active males performed double-leg and single-leg drop jumps from a box height of 0.3 m and a 10 s vertical bilateral hopping test. Contact time, flight time and total time (the sum of contact and flight time) were concurrently assessed during single and double-leg drop jumps and during hopping...
December 1, 2016: Journal of Human Kinetics
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