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https://www.readbyqxmd.com/read/29793049/psychometric-validation-of-the-turkish-nine-item-internet-gaming-disorder-scale-short-form-igds9-sf
#1
Cuneyt Evren, Ercan Dalbudak, Merve Topcu, Nilay Kutlu, Bilge Evren, Halley M Pontes
The main aims of the current study were to test the factor structure, reliability and validity of the nine-item Internet Gaming Disorder Scale-Short Form (IGDS9-SF), a standardized measure to assess symptoms and prevalence of Internet Gaming Disorder (IGD). In the present study participants were assessed with the IGDS9-SF, nine-item Internet Gaming Disorder Scale (IGDS) and the Young's Internet Addiction Test-Short Form (YIAT-SF). Confirmatory factor analyzes demonstrated that the factor structure (i.e., the dimensional structure) of the IGDS9-SF was satisfactory...
May 4, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29777995/environmental-governance-in-china-interactions-between-the-state-and-nonstate-actors
#2
Dan Guttman, Oran Young, Yijia Jing, Barbara Bramble, Maoliang Bu, Carmen Chen, Kathinka Furst, Tao Hu, Yifei Li, Kate Logan, Lingxuan Liu, Lydia Price, Michael Spencer, Sangwon Suh, Xiaopu Sun, Bowen Tan, Harold Wang, Xin Wang, Juan Zhang, Xinxin Zhang, Rodrigo Zeidan
In the West, limited government capacity to solve environmental problems has triggered the rise of a variety of "nonstate actors" to supplement government efforts or provide alternative mechanisms for addressing environmental issues. How does this development - along with our efforts to understand it - map onto environmental governance processes in China? China's efforts to address environmental issues reflect institutionalized governance processes that differ from parallel western processes in ways that have major consequences for domestic environmental governance practices and the governance of China "going abroad...
May 16, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29766979/playing-it-cool-characterizing-social-play-bout-termination-and-candidate-play-signals-of-juvenile-and-infant-tibetan-macaques-macaca-thibetana
#3
Kaitlin R Wright, Jessica A Mayhew, Lori K Sheeran, Jake A Funkhouser, Ronald S Wagner, Li-Xing Sun, Jin-Hua Li
Play behaviors and signals during playful interactions with juvenile conspecifics are important for both the social and cognitive development of young animals. The social organization of a species can also influence juvenile social play. We examined the relationships among play behaviors, candidate play signals, and play bout termination in Tibetan macaques (Macaca thibetana) during juvenile and infant social play to characterize the species play style. As Tibetan macaques are despotic and live in groups with strict linear dominance hierarchies and infrequent reconciliation, we predicted that play would be at risk of misinterpretation by both the individuals engaged in the play bout and by those watching, possibly leading to injury of the players...
July 18, 2018: Zoological Research
https://www.readbyqxmd.com/read/29765494/the-oxidant-antioxidant-equilibrium-and-inflammatory-process-indicators-after-an-exercise-test-on-the-alterg-antigravity-treadmill-in-young-amateur-female-athletes
#4
Łukasz Sielski, Paweł Sutkowy, Agnieszka Skopowska, Katarzyna Pawlak-Osińska, Zofia Augustyńska, Katarzyna Hewelt, Radosław Drapała, Alina Woźniak
The AlterG antigravity treadmill allows running with a considerable weight reduction. Physical exercise practiced on this treadmill is an innovative method supporting the treatment of injuries in sports and rehabilitation of patients. The aim of the study was to investigate the effect of a 30 min run on the AlterG treadmill with 80% body weight reduction comparing the effect to the similar effort on the classic treadmill on the redox equilibrium and the activity of selected lysosomal enzymes and a serine protease inhibitor in the blood of amateur minor female volleyball players...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29741447/health-effects-of-wrist-loading-sports-during-youth-a-systematic-literature-review
#5
Laura S Kox, P Paul F M Kuijer, Dagmar A J Thijssen, Gino M M J Kerkhoffs, Rick R van Rijn, Monique H W Frings-Dresen, Mario Maas
BACKGROUND: The benefits and risks of performing popular wrist-loading sports at a young age have not been investigated systematically. We aimed to evaluate positive and negative long-term wrist-related health effects of sports performance requiring repetitive wrist loading during youth. METHODS: Six databases were searched for cohort and cross-sectional studies. Three investigators selected studies evaluating quantitatively measured health effects of upper extremities in athletes practicing wrist-loading sports (gymnastics, tennis, volleyball, field hockey, rowing, and judo) for minimally 4 months before the age of 18...
May 9, 2018: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/29740560/comparison-of-technical-and-physical-activities-between-8-vs-8-and-11-vs-11-games-in-young-korean-soccer-players
#6
Seong Hwan Oh, Chang Hwa Joo
The aims of this study were to examine the differences in technical aspects and physical demands between small-size games (SSG; 8 vs. 8) and regular-size games (RSG; 11 vs. 11) in young Korean soccer players. Seventy-nine young soccer players from 6 teams (U-12) volunteered to participate in the study. The players completed 4 games (2 SSG, 62×51 m, and 2 RSG, 80×54 m) in 2 days. Each game was filmed to evaluate technical actions. Physical demand variables were measured using global positioning system technology...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29737414/bone-geometry-in-young-male-and-female-football-players-a-peripheral-quantitative-computed-tomography-pqct-study
#7
Gabriel Lozano-Berges, Ángel Matute-Llorente, Alejandro Gómez-Bruton, Alex González-Agüero, Germán Vicente-Rodríguez, José A Casajús
The present study shows that football practice during growth may improve bone geometry in male and female football players. However, only females had better bone strength in comparison with controls. PURPOSE: The aim of this study was to compare bone geometry in adolescent football players and controls. METHODS: A total of 107 football players (71 males/36 females; mean age 12.7 ± 0.6/12.7 ± 0.6 years) and 42 controls (20 males/22 females; mean age 13...
May 8, 2018: Archives of Osteoporosis
https://www.readbyqxmd.com/read/29723779/what-s-fair-how-children-assign-reward-to-members-of-teams-with-differing-causal-structures
#8
Karla Koskuba, Tobias Gerstenberg, Hannah Gordon, David Lagnado, Anne Schlottmann
How do children reward individual members of a team that has just won or lost a game? We know that from pre-school age, children consider agents' performance when allocating reward. Here we assess whether children can go further and appreciate performance in context: The same pattern of performance can contribute to a team outcome in different ways, depending on the underlying rule framework. Two experiments, with three age groups (4/5-year-olds, 6/7-year-olds, and adults), varied performance of team members, with the same performance patterns considered under three different game rules for winning or losing...
April 30, 2018: Cognition
https://www.readbyqxmd.com/read/29723200/longitudinal-motor-performance-development-in-early-adolescence-and-its-relationship-to-adult-success-an-8-year-prospective-study-of-highly-talented-soccer-players
#9
Daniel Leyhr, Augustin Kelava, Johannes Raabe, Oliver Höner
Several talent identification and development (TID) programs in soccer have implemented diagnostics to measure players' motor performance. Yet, there is a lack of research investigating the relationship between motor development in adolescence and future, adult performance. This longitudinal study analyzed the three-year development of highly talented young soccer players' speed abilities and technical skills and examined the relevance of this development to their adult success. The current research sample consisted of N = 1,134 players born between 1993 and 1995 who were selected for the German Soccer Association's TID program and participated in nationwide motor diagnostics (sprinting, agility, dribbling, ball control, shooting) four times between the Under 12 (U12) and Under 15 (U15) age class...
2018: PloS One
https://www.readbyqxmd.com/read/29721761/a-cross-sectional-study-assessing-the-contributions-of-body-fat-mass-and-fat-free-mass-to-body-mass-index-scores-in-male-youth-rugby-players
#10
Olivier Gavarry, Gregory Lentin, Patrick Pezery, Anne Delextrat, Guillaume Chaumet, Alain Boussuges, Julien Piscione
BACKGROUND: In some sports such as rugby, a large body size is an advantage, and the desire to gain weight can bring young players to become overweight or obese. The aim of this study was to evaluate the prevalence of overweight and obesity and the contribution of body fat mass index (BFMI) and fat-free mass index (FFMI) to body mass index (BMI) changes among young male rugby players (15-a-side rugby). METHODS: The criteria of the International Obesity Task Force were used to define overweight and obesity from BMI...
May 2, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29721460/flexibility-responses-to-different-stretching-methods-in-young-elite-basketball-players
#11
Angela Notarnicola, Fabrizio Perroni, Alessio Campese, Giuseppe Maccagnano, Antonio Monno, Biagio Moretti, Silvio Tafuri
Introduction: The aims of study were: 1) to verify the effectiveness of different stretching methods and training; 2) to compare the effects with only training on the flexibility of joints in basketball players. Methods: 30 males basketball players (age: 17±1yrs; BMI: 23.4±3.1), divided into 2 groups (15 experimental group - EG - and 15 control group, CG), participated to study. EG performed 5 different stretching method: passive stretching, active stretching, postural protocol, PNF and dynamic stretching...
October 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29706358/the-role-of-cannabinoid-signaling-in-acute-and-chronic-kidney-diseases
#12
REVIEW
Federica Barutta, Graziella Bruno, Raffaella Mastrocola, Stefania Bellini, Gabriella Gruden
The endogenous cannabinoids anandamide and 2-arachidonoylglycerol bind to the cannabinoid receptors of type 1 and 2. These receptors are also the binding sites for exogenous, both natural and synthetic, cannabinoids that are used for recreation purposes. Until recently, cannabinoids and cannabinoid receptors have attracted little interest among nephrologists; however, a full endocannabinoid system (ECS) is present in the kidney and it has recently emerged as an important player in the pathogenesis of diabetic nephropathy, drug nephrotoxicity, and progressive chronic kidney disease...
April 26, 2018: Kidney International
https://www.readbyqxmd.com/read/29691128/ice-parties-among-young-men-who-have-sex-with-men-in-thailand-pleasures-secrecy-and-risks
#13
Thomas E Guadamuz, Pimpawun Boonmongkon
BACKGROUND: Crystal methamphetamine (ice) has become the substance of choice among young men who have sex with men (YMSM) in urban Thailand. Yet, there is scarce data on this phenomenon, partly due to the difficulty in accessing men who will disclose and openly discuss the social contexts, meanings and risks surrounding ice practice. We present an ethnography of ice parties, critically discussing the in-depth social meanings of ice; the sexual socialities and the secrecy surrounding its use; the transactions between older and younger men; and the role of the Internet and mobile technology...
April 21, 2018: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29687145/effects-of-reforestation-on-ammonia-oxidizing-microbial-community-composition-and-abundance-in-subtropical-acidic-forest-soils
#14
Ruo-Nan Wu, Han Meng, Yong-Feng Wang, Ji-Dong Gu
Forest ecosystems have great ecological values in mitigation of climate change and protection of biodiversity of flora and fauna; re-forestry is commonly used to enhance the sequestration of atmospheric CO2 into forest storage biomass. Therefore, seasonal and spatial dynamics of the major microbial players in nitrification, ammonia-oxidizing archaea (AOA) and bacteria (AOB), in acidic soils of young and matured revegetated forests were investigated to elucidate the changes of microbial communities during forest restoration, and compared to delineate the patterns of community shifts under the influences of environmental factors...
April 24, 2018: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/29687011/incidence-of-elbow-ulnar-collateral-ligament-surgery-in-collegiate-baseball-players
#15
Marcus A Rothermich, Stan A Conte, Kyle T Aune, Glenn S Fleisig, E Lyle Cain, Jeffrey R Dugas
Background: Recent reports have highlighted the progressive increase in the incidence of ulnar collateral ligament (UCL) injuries to the elbow in baseball players of all levels. However, knowledge of the incidence and other epidemiological factors regarding UCL injuries, specifically in college baseball players, is currently lacking. Purpose: To evaluate, over a period of 1 year, the incidence of UCL injuries requiring surgery in National Collegiate Athletic Association (NCAA) Division I baseball programs...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29676598/modernising-speech-audiometry-using-a-smartphone-application-to-test-word-recognition
#16
Marianne van Zyl, De Wet Swanepoel, Hermanus C Myburgh
OBJECTIVE: This study aimed to develop and assess a method to measure word recognition abilities using a smartphone application (App) connected to an audiometer. DESIGN: Word lists were recorded in South African English and Afrikaans. Analyses were conducted to determine the effect of hardware used for presentation (computer, compact-disc player, or smartphone) on the frequency content of recordings. An Android App was developed to enable presentation of recorded materials via a smartphone connected to the auxiliary input of the audiometer...
April 20, 2018: International Journal of Audiology
https://www.readbyqxmd.com/read/29673243/the-effect-of-additional-carbohydrate-supplements-for-7-days-after-prolonged-interval-exercise-on-exercise-performance-and-energy-metabolism-during-submaximal-exercise-in-team-sports-athletes
#17
Hun-Young Park, Jisu Kim, Miyoung Park, Nana Chung, Kiwon Lim
PURPOSE: The purpose of our study was to determine the effectiveness of carbohydrate loading by additional carbohydrate supplements for 7 days after prolonged interval exercise on exercise performance and energy metabolism during submaximal exercise in team-sports athletes. METHODS: Twenty male team-sports athletes (14 soccer and 6 rugby players) volunteered to participate in the study and were equally divided into the experimental group (EXP, n=10) performing additional carbohydrate supplementation for 7 days after prolonged interval exercise until blood glucose level reaches 50 mg/dL or less and the control group (CON, n=10)...
March 30, 2018: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/29672932/investigation-of-knee-control-as-a-lower-extremity-injury-risk-factor-a-prospective-study-in-youth-football
#18
Anu M Räisänen, Hillevi Arkkila, Tommi Vasankari, Kathrin Steffen, Jari Parkkari, Pekka Kannus, Hannele Forsman, Kati Pasanen
This prospective study in youth football examined the relationship between frontal plane knee projection angle (FPKPA) during the single-leg squat and sustaining an acute lower extremity injury or acute non-contact lower extremity injury. Secondly, side-to-side asymmetry in FPKPA and sex as injury risk factors were explored. In addition, we investigated the influence of age, sex and leg dominance on the FPKPA. A total of 558 youth football players (U11 to U14), participated in the single-leg squat test and prospective injury registration...
April 19, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29672644/the-relative-age-effect-is-larger-in-italian-soccer-top-level-youth-categories-and-smaller-in-serie-a
#19
Paolo Riccardo Brustio, Corrado Lupo, Alexandru Nicolae Ungureanu, Riccardo Frati, Alberto Rainoldi, Gennaro Boccia
The relative age effect (RAE; i.e., an asymmetry in the birth distribution) is a bias observed in sport competitions that may favour relatively older athletes in talent identification. Therefore, the aim of this study was to investigate the presence of RAE in elite soccer players competing in the Italian championships, even considering the discriminations of younger and older Serie A players (in relation to the median age of the sample), and different positional roles (i.e., goalkeeper, defender, midfielder, forward) for each observed category...
2018: PloS One
https://www.readbyqxmd.com/read/29670536/multi-directional-repeated-sprint-is-a-valid-and-reliable-test-for-assessment-of-junior-handball-players
#20
Amin Daneshfar, Daniel E Gahreman, Majid S Koozehchian, Sadegh Amani Shalamzari, Mozhgan Hassanzadeh Sablouei, Thomas Rosemann, Beat Knechtle, Pantelis T Nikolaidis
The aim of the present study was to examine the validity and reliability of a 10 × (6 × 5 m) multi-directional repeated sprint ability test (RSM) in elite young team handball (TH) players. Participants were members of the Iranian national team ( n = 20, age 16.4 ± 0.7 years, weight 82.5 ± 5.5 kg, height 184.8 ± 4.6 cm, body fat 15.4 ± 4.3%). The validity of RSM was tested against a 10 × (15 + 15 m) repeated sprint ability test (RSA), Yo-Yo Intermittent Recovery test Level 1 (Yo-Yo IR1), squat jump (SJ) and countermovement jump (CMJ)...
2018: Frontiers in Physiology
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