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https://www.readbyqxmd.com/read/28724040/cardiac-remodeling-indicators-in-adolescent-athletes
#1
Joaquim Castanheira, João Valente-Dos-Santos, Daniela Costa, Diogo Martinho, Jorge Fernandes, João Duarte, Nuno Sousa, Vasco Vaz, Luis Rama, António Figueiredo, Manuel Coelho-E-Silva
Objective: The idea that different sports and physical training type results in different cardiac adaptations has been widely accepted. However, this remodelling process among different sport modalities is still not fully understood. Thus, the current study aims to investigate the heart morphology variation associated with a set of different modalities characterized by distinct models of preparation and different methods and demands of training and completion. Method: The sample comprises 42 basketball players, 73 roller hockey players, 28 judo athletes and 21 swimmers...
May 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28723818/somatotype-and-body-composition-in-young-soccer-players-according-to-the-playing-position-and-sport-success
#2
Víctor Cárdenas-Fernández, José Luis Chinchilla-Minguet, Alfonso Castillo-Rodríguez
Soccer players undergo an evolution in their body composition throughout the growth and passage through the different base stages, that is, childhood, puberty and adolescence. The aim of this study was to analyze the morphology and body composition of U14, U16, and U19 soccer players, taking into account in addition, their sport success endorsed through the regularity participation and their relation with the different playing positions occupied during competition (goalkeeper, external defender, central defender, midfielder and forward/extreme)...
July 17, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28723812/effects-of-12-weeks-resistance-training-on-sprint-and-jump-performance-in-competitive-adolescent-rugby-union-players
#3
Simon K Harries, David R Lubans, Anthony Buxton, Thomas H J MacDougall, Robin Callister
Sprint performance is an important characteristic for success in many sports, including rugby union. Resistance training is used to increase muscular fitness (i.e. strength, endurance and power) and may also be effective for improving sprint and jump performances. The aims of this study were to examine the effects of resistance training using two different periodized programs (linear and daily undulating) on sprint and jump performance and explore relationships between performance measures. Sixteen male (16...
July 17, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28720693/catastrophic-cervical-spinal-injury-in-an-amateur-college-wrestler
#4
Jayakrishnan Kelamangalathu Narayana Kurup, Ravitheja Jampani, Simanchal P Mohanty
A young amateur wrestler presented with a burst fracture of the seventh cervical vertebra with complete paraplegia. He was treated with surgery for spine stabilisation and was actively rehabilitated. Adolescents and teenagers are indulging in high-contact sports like wrestling, without proper training and technical know-how, which can lead to severe injuries and possibly, permanent handicap or death. Trainers, assistants and institutions should be well equipped to diagnose and provide initial care of people with a spinal injury to prevent a partial injury from progressing to complete injury...
July 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28718189/-health-related-quality-of-life-self-esteem-and-health-behaviour-on-average-6-years-after-an-obesity-outpatient-lifestyle-program
#5
Ingo Menrath, Angelika Gminder, Olaf Hiort, Ute Thyen
Background Multimodal programs focusing on weight reduction are recommended in guidelines for the treatment of obese children. However, studies investigating the effects of such programs over time are still missing; there is especially a lack of studies considering longer periods after treatment. In the present study, adolescents' bodyweight, health-related quality of life (HRQoL), self-esteem and health behavior were assessed before and directly after the treatment as well as 3 years after the treatment. Methods Between 2005 and 2009 84 children and adolescents took part in a 10-month, multimodal training programme...
July 2017: Klinische Pädiatrie
https://www.readbyqxmd.com/read/28716691/acute-injuries-in-finnish-junior-floorball-league-players
#6
Kati Pasanen, Jussi Hietamo, Tommi Vasankari, Pekka Kannus, Ari Heinonen, Urho M Kujala, Ville M Mattila, Jari Parkkari
OBJECTIVES: To investigate the incidence and characteristics of acute time-loss injuries in Finnish junior floorball league players. DESIGN: Prospective cohort study with 3-year follow-up. METHODS: One hundred and eighty-six female and male players (mean age 16.6±1.4) took part in the follow-up study (2011-2014). The training hours and games were recorded on a team diary. Floorball related acute injuries were registered and verified by a research physician...
July 4, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28714773/impact-of-martial-arts-judo-karate-and-kung-fu-on-bone-mineral-density-gains-in-adolescents-of-both-genders-9-month-follow-up-martial-arts-and-bone-density
#7
Igor H Ito, Han C G Kemper, Ricardo R Agostinete, Kyle R Lynch, Diego G D Christofaro, Enio R Ronque, Rômulo A Fernandes
PURPOSE: To compare bone mineral density gains in adolescents of both genders stratified according to different martial art styles in a 9-month follow-up study. METHODS: The longitudinal study consisted of 29 adolescents of both genders and age between 11 and 17 years stratified into control group ([CG] not engaged in any sport) and 50 fighters (Kung-fu / karate-KF / KT, n = 29; Judo, n = 21). All 79 subjects underwent anthropometric measures (weight, height, leg length and height set), dual energy x-ray absorptiometry (Bone Mineral Density [BMD], in g/cm(2)) at two moments, baseline and nine months later...
July 17, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28713281/effectiveness-of-traditional-strength-vs-power-training-on-muscle-strength-power-and-speed-with-youth-a-systematic-review-and-meta-analysis
#8
REVIEW
David G Behm, James D Young, Joseph H D Whitten, Jonathan C Reid, Patrick J Quigley, Jonathan Low, Yimeng Li, Camila D Lima, Daniel D Hodgson, Anis Chaouachi, Olaf Prieske, Urs Granacher
Numerous national associations and multiple reviews have documented the safety and efficacy of strength training for children and adolescents. The literature highlights the significant training-induced increases in strength associated with youth strength training. However, the effectiveness of youth strength training programs to improve power measures is not as clear. This discrepancy may be related to training and testing specificity. Most prior youth strength training programs emphasized lower intensity resistance with relatively slow movements...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28708703/preparticipation-sports-physicals-a-comparison-of-single-provider-and-station-based-models
#9
David Lick, Karim Abdel-Aty, Daniel Diaz, Jaspaul Dulku, Sandeep Lochub, Kamran Mir, Robert Ricketts
BACKGROUND: Preparticipation physical examinations (PPEs) are required for children and adolescents before sports participation to identify at-risk athletes. These evaluations can be completed in a traditional office-based setting or in a station-based format. It is unclear if one format is superior to the other in identifying at-risk athletes. METHODS: We performed a retrospective chart review of children and adolescents between the ages 10 and 18 years who received their PPE in our office or in a station-based setting in a local high school between the years 2009 and 2015...
July 11, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28708425/reference-values-for-the-pediatric-quality-of-life-inventory-and-the-multidimensional-fatigue-scale-in-adolescent-athletes-by-sport-and-sex
#10
Alison R Snyder Valier, Cailee E Welch Bacon, R Curtis Bay, Eileen Molzen, Kenneth C Lam, Tamara C Valovich McLeod
BACKGROUND: Effective use of patient-rated outcome measures to facilitate optimal patient care requires an understanding of the reference values of these measures within the population of interest. Little is known about reference values for commonly used patient-rated outcome measures in adolescent athletes. PURPOSE: To determine reference values for the Pediatric Quality of Life Inventory (PedsQL) and the Multidimensional Fatigue Scale (MFS) in adolescent athletes by sport and sex...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28705431/-effect-of-intermittent-variable-intensity-exercise-on-qt-variation-and-risk-of-sudden-cardiac-death-among-cameroonian-school-adolescents
#11
E C Bika Lele, M N Pepouomi, A Temfemo, J Mekoulou, P Assomo Ndemba, S H Mandengue
INTRODUCTION: Several cases of sudden deaths are observed among students practicing sport and physical activity (SPA). Just few studies have been carried out on the variation of the QT (interval) and risk of sudden death during sporting exercises. AIM: To determine the effect of variable intermittent stress intensity on the variation of QT and the risk of sudden cardiac death. PATIENTS AND METHODS: Form 4, lower sixth and upper sixth students were recruited from a high school in Douala (Cameroon)...
July 10, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28699973/healthy-school-happy-school-design-and-protocol-for-a-randomized-clinical-trial-designed-to-prevent-weight-gain-in-children
#12
Daniela Schneid Schuh, Maíra Ribas Goulart, Sandra Mari Barbiero, Caroline D'Azevedo Sica, Raphael Borges, David William Moraes, Lucia Campos Pellanda
Background: Schools have become a key figure for the promotion of health and obesity interventions, bringing the development of critical awareness to the construction and promotion of a healthy diet, physical activity, and the monitoring of the nutritional status in childhood and adolescence. Objectives: To describe a study protocol to evaluate the effectiveness of an intervention designed to improve knowledge of food choices in the school environment. Methods: This is a cluster-randomized, parallel, two-arm study conducted in public elementary and middle schools in Brazil...
June 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28699204/postnatal-risk-factors-for-testicular-cancer-the-epsam-case-control-study
#13
Giovenale Moirano, Daniela Zugna, Chiara Grasso, Dario Mirabelli, Patrizia Lista, Libero Ciuffreda, Nereo Segnan, Franco Merletti, Lorenzo Richiardi
Testicular cancer is considered to originate from an impaired differentiation of fetal germ cells, but puberty could represent another time window of susceptibility. This study aimed at investigating the association between environmental exposures acting during puberty/adolescence (13 to 19 years of age) and the risk of testicular cancer. We used data of the EPSAM study, a case-control study on germ-cell testicular cancer conducted in the province of Turin, Italy, involving cases diagnosed between 1997 and 2008...
July 12, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28697581/altered-gray-matter-volume-and-functional-connectivity-of-the-motor-network-in%C3%A2-young%C3%A2-divers
#14
Xia Liu, Liansheng Liu, Fen Hou, Zhifeng Zhou, Qingying Wu, Hengguo Li
BACKGROUND: Motor learning and professional sports training can induce plastic changes in brain structures that are associated with distinct training demands. OBJECTIVE: To testify the hypothesis of that regional gray matter structures in the motor-related cortex and its functional connectivity (FC) are altered in young divers. METHODS: We undertook T1-voxel-based morphometry (VBM) structural and resting-state functional magnetic resonance imaging in groups of diving athletes (DAs) and demographically-matched healthy controls...
July 7, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28693117/joint-association-of-screen-time-and-physical-activity-with-anthropometric-measures-in-iranian-children-and-adolescents-the-weight-disorders-survey-of-the-caspian-iv-study
#15
Shirin Djalalinia, Mostafa Qorbani, Negar Rezaei, Ali Sheidaei, Armita Mahdavi-Gorabi, Amir Kasaeian, Mohammad Esmaeil Motlagh, Hamid Asayesh, Saeid Safiri, Roya Kelishadi
BACKGROUND: This study aims to assess the joint association of screen time (ST) and physical activity (PA) with anthropometric indices among Iranian children and adolescents. METHODS: In this national study, 23,183 school students, aged 6-18 years, were studied. By using a multi-stage cluster sampling method, they were selected from rural and urban areas of 30 provinces of Iran. ST and PA were assessed by self-administered validated questionnaires. Height, weight, hip and waist circumferences (WC) were measured according to standard protocols, and body mass index (BMI) was calculated...
June 23, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/28691637/sociodemographic-correlates-of-physical-activity-and-screen-time-among-adolescents-in-canada-and-guatemala-results-from-the-compass-system
#16
Eun-Young Lee, Stephen Hunter, Scott T Leatherdale, Valerie Carson
This study was to compare the levels of physical activity (PA) and sedentary behavior (SB) between Canadian and Guatemalan adolescents, and to examine associations of sociodemographic variables with PA and screen time among adolescents in Canada and Guatemala. Self-reported, cross-sectional data from students in grades 9-12 who participated in the 2015 COMPASS study (Canada; n = 39,817; mean age = 15.6 years) and COMPASS-Guatemala ( n = 1,221; mean age = 15.1 years) were used. Sociodemographic variables included age, gender, ethnicity (exclusively among Canadians), and weekly money allowance...
July 1, 2017: Global Health Promotion
https://www.readbyqxmd.com/read/28685886/longitudinal-adaptations-of-bone-mass-geometry-and-metabolism-in-adolescent-male-athletes-the-pro-bone-study
#17
Dimitris Vlachopoulos, Alan R Barker, Esther Ubago-Guisado, Ioannis G Fatouros, Karen M Knapp, Craig A Williams, Luis Gracia-Marco
Adolescence is a crucial period for bone development and exercise can enhance bone acquisition during this period of life. However, it is not known how the different loading sports practised can affect bone acquisition in adolescent male athletes. Therefore, the purpose of the present study was to determine the 1 year longitudinal bone acquisition among adolescent males involved in osteogenic (football) and non-osteogenic sports (swimming and cycling) and compared to active controls. 116 adolescent males aged 12-14 years at baseline were monitored 1 year: 37 swimmers, 37 footballers, 29 cyclists and 14 active controls...
July 7, 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/28685651/successful-transfer-of-a-motor-learning-strategy-to-a-novel-sport
#18
Philip E Kearney, Phil Judge
This study investigated whether secondary school students who were taught a motor learning strategy could transfer their knowledge of the strategy to learning a novel task. Twenty adolescents were randomly allocated to a strategy or control group. The strategy group was taught Singer's five-step learning strategy, while the control group received information on the evolution and biomechanics of the basketball free throw. Both groups received three 1-hour practice sessions on a modified basketball shooting task...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/28682693/effect-of-child-gender-and-psychosocial-factors-on-physical-activity-from-5-th-6-th-grade
#19
Melinda Forthofer, Marsha Dowda, Jennifer R O'Neill, Cheryl L Addy, Samantha McDonald, Lauren Reid, Russell R Pate
BACKGROUND: Gender differences in physical activity trajectories during adolescence are well-documented, yet little research has examined whether the determinants of these trajectories vary by child's gender. This study is one of few prospective examinations of gender differences in the influences of psychosocial and socioenvironmental factors on changes in objectively measured PA. METHODS: Students and parents from elementary and middle schools located in two school districts in South Carolina were enrolled in a prospective cohort study of changes in children's PA from elementary to middle school...
July 6, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28676778/children-s-first-experience-of-taking-anabolic-androgenic-steroids-can-occur-before-their-10th-birthday-a-systematic-review-identifying-9-factors-that-predicted-doping-among-young-people
#20
Adam R Nicholls, Ed Cope, Richard Bailey, Katrin Koenen, Detlef Dumon, Nikolaos C Theodorou, Benoit Chanal, Delphine Saint Laurent, David Müller, Mar P Andrés, Annemarie H Kristensen, Mark A Thompson, Wolfgang Baumann, Jean-Francois Laurent
Taking performance-enhancing drugs (PEDs) can cause serious and irreversible health consequences, which can ultimately lead to premature death. Some young people may take PEDs without fully understanding the ramifications of their actions or based on the advice from others. The purpose of this systematic review was to identify the main factors that predicted doping among young people. The literature was systematically reviewed using search engines, manually searching specialist journals, and pearl growing. Fifty-two studies, which included 187,288 young people aged between 10 and 21 years of age, 883 parents of adolescent athletes, and 11 adult coaches, who were interviewed regarding young athletes, were included in this review...
2017: Frontiers in Psychology
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