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Pediatric Exercise Science

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https://www.readbyqxmd.com/read/27834619/maturation-related-effect-of-low-dose-plyometric-training-on-performance-in-youth-hockey-players
#1
Jason Moran, Gavin R H Sandercock, Rodrigo Ramírez-Campillo, Oliver Todd, Collison, Dave A Parry
PURPOSE: The purpose of this intervention study was to investigate if a low-dose of plyometric training (PT) could improve sprint and jump performance in groups of different maturity status. METHODS: Male youth field hockey players were divided into Pre-PHV (from -1 to -1.9 from PHV; Experimental: n = 9; Control = 12) and Mid-PHV (0 to +0.9 from PHV; Experimental: n = 8; Control = 9) groups. Participants in the experimental groups completed 60 foot contacts, twice-weekly, for 6 weeks...
November 11, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27834608/factors-associated-with-moderate-to-vigorous-physical-activity-in-adolescents-born-preterm
#2
Ketsia Proulx, Annette Majnemer, Noémi Dahan-Oliel, Barbara Mazer, Line Nadeau, Kathleen Vanier, Désirée B Maltais
PURPOSE: Little is known about the physical activity of adolescents born prematurely. This study aimed to: 1) describe relationships between moderate to vigorous physical activity (MVPA) in adolescents born prematurely and various factors and, 2) compare their MVPA level to guidelines. METHODS: A secondary analysis was performed using data from 64 adolescents (16.1 ± 2.5 years old, born ≤29 weeks gestation; 57.8% girls). Time spent in MVPA was based on accelerometry data...
November 11, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27834578/serum-adiponectin-levels-and-cardiorespiratory-fitness-in-non-overweight-and-overweight-portuguese-adolescents-the-labmed-physical-activity-study
#3
César Agostinis-Sobrinho, Carla Moreira, Sandra Abreu, Luis Lopes, José Oliveira-Santos, Jostein Steene-Johannessen, Jorge Mota, Rute Santos
PURPOSE: This study examined the independent associations between cardiorespiratory fitness and circulating adiponectin concentration in adolescents, controlling for several potential covariates. METHODS: This is a cross-sectional study in Portuguese adolescents. A sample of 529 (267 girls) aged 12-18 years were included and categorized as overweight and non-overweight. Cardiorespiratory fitness was assessed by 20 meters shuttle run test. We measured serum adiponectin, high-sensitivity C-reactive protein, fasting glucose, insulin and HDL-cholesterol...
November 11, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27768554/the-influence-of-familiarization-on-physical-fitness-test-results-in-primary-school-aged-children
#4
Ivan Vrbik, Goran Sporiš, Lovro Štefan, Dejan Madić, Nebojša Trajković, Irena Valantine, Zoran Milanović
PURPOSE: The number of familiarization sessions in fitness assessments seems to be critical and inconsistent. Therefore, the primary aim of this research was to determine the number of familiarization attempts that stabilize the results in particular physical fitness tests. The secondary aim was to establish the test reliability through familiarization sessions. METHODS: Thirty-nine primary school children participated in this research (age: 10.8 years, body mass: 40...
October 21, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27768553/development-of-an-electronic-version-of-the-children-s-self-perceptions-of-adequacy-in-and-predilection-for-physical-activity-ecsappa-scale
#5
Marybeth Grant-Beuttler, Jenifer Jennings, Christina McCauley, Robert Dulay, Katlyn Grossnickle, Kerri Kill, John Hay
PURPOSE: To develop an electronic version of the Children's Self-Perceptions of Adequacy in and Predilection for Physical Activity (eCSAPPA), which would allow individual administration to children younger than nine years of age. METHODS: Fifty-four, four - nine-year-old children completed the eCSAPPA and the Test of Gross Motor Development-2 (TGMD-2). Parental measures of physical activity, and body mass index were obtained. Twenty-one participants additionally completed the paper version of the CSAPPA...
October 21, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27768546/exercise-training-improved-body-composition-cardiovascular-function-and-physical-fitness-of-5-year-old-children-with-obesity-or-normal-body-mass
#6
Sijie Tan, Cheng Chen, Mingyang Sui, Lunan Xue, Jianxiong Wang
OBJECTIVES: To explore the effects of exercise training on body composition, cardiovascular function, and physical fitness in 5-year-old obese and lean children. METHODS: 42 obese and 62 lean children were randomly allocated into exercise and control groups separately. Body composition, cardiovascular function, and physical fitness were measured at baseline and the end of the intervention. The exercise groups participated in 10 weeks of supervised moderate intensity exercise training (at 50% of heart rate reserve), 50 training sessions in total...
October 21, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705535/validity-of-skinfold-equations-against-dual-energy-x-ray-absorptiometry-in-predicting-body-composition-in-adolescent-pentathletes
#7
Sidnei Jorge Fonseca-Junior, Aldair J Oliveira, Luiz Lannes Loureiro, Anna Paola Trindade Pierucci
PURPOSE: Body composition of adolescent athletes is often evaluated scientifically and in sports by using reference equations developed from non-athlete adolescent populations. The aim of this study was to analyse the validity of predictive equations based on skinfold measurements, as compared with dual-energy X-ray absorptiometry (DXA), to estimate body fat in adolescent modern pentathlon athletes. METHODS: 51 athletes, 27 male (mean age=15.1 years; standard deviation, SD=1...
October 5, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705534/can-motor-proficiency-in-preschool-age-affect-physical-activity-in-adolescence
#8
Fotini Venetsanou, Antonis Kambas
BACKGROUND: This study investigated if Motor Proficiency (MP) in preschool age associate with Physical Activity (PA) in adolescence. METHODS: In 2004, the Bruininks-Oseretsky Test of Motor Proficiency-Short Form (BOTMP-SF) (7) was administered to 413 children, aged 4-6 years, who were classified to MP groups according to their BOTMP-SF total score (TS). In 2014, the PA of 106 former participants (47 boys, 59 girls) was measured with Omron pedometers. MP [three (high; above average; average)] X gender (two) ANOVA and Bonferroni tests were computed on average of steps/week...
October 5, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27854182/trainability-of-young-athletes-short-term-goals-or-long-term-mission
#9
Craig A Williams
No abstract text is available yet for this article.
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705538/the-adolescent-athlete-a-developmental-approach-to-injury-risk
#10
Damien McKay, Carolyn Broderick, Katharine Steinbeck
With the advent of long-term athlete development programs and early sport specialization, the training of elite athletes now spans the period of adolescence. Adolescence represents a period of physical, psychosocial and cognitive development, but also a time of physical and psychological vulnerability. Changes in skeletal and physiological attributes coincide with an increased risk of sport related injury. A window of vulnerability is shaped by the properties of the musculoskeletal system, the influence of pubertal hormones and the lag time between physical and cognitive development...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705537/a-longitudinal-study-of-physical-fitness-in-elite-junior-tennis-players
#11
Tamara Kramer, Barbara C H Huijgen, Marije T Elferink-Gemser, Chris Visscher
PURPOSE: To analyze how physical fitness (PF) improves in elite junior tennis players related to age, maturity, and performance level. METHODS: Elite junior tennis players (n = 113 boys, n = 83 girls) divided by performance level were monitored longitudinally from U14 to U16. Maturity, upper and lower-body power, speed, and agility were measured during subsequent competitive seasons. Improvement was analyzed per sex using multilevel analysis. RESULTS: PF components for boys and girls improved over age (U14-U16) (ES ...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27705536/physiological-adaptations-following-resistance-training-in-youth-athletes-a-narrative-review
#12
Kirsten Legerlotz, Robert Marzilger, Sebastian Bohm, Adamantios Arampatzis
PURPOSE: To understand the mechanisms for the effects of resistance training on functional parameters, and to assess the injury risk of the involved tissues, it is necessary to examine the underlying morphological and structural changes of the respective tissues. METHODS: The presented information on physiological adaptations have been deduced from cross-sectional studies comparing youth athletes with controls and children with adults as well as from longitudinal studies examining the effects of resistance training in untrained children and adolescents and in youth athletes...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27633491/the-1-500-m-rowing-performance-is-highly-dependent-on-modified-wingate-anaerobic-test-performance-in-national-level-adolescent-rowers
#13
Hugo Maciejewski, Abderrahmane Rahmani, Frédéric Chorin, Julien Lardy, Caroline Giroux, Sébastien Ratel
PURPOSE: The aim of the current study was to determine whether the anaerobic performance assessed by a modified Wingate test could account for the 1,500-m rowing ergometer performance in young competitive rowers. METHODS: Fourteen national-level adolescent rowers performed on a rowing ergometer i) a 30-s allout exercise (i.e., modified Wingate test) and ii) a 1,500-m all-out exercise (i.e., rowing performance). For each of these two exercises, the mean power output was considered as the main performance criterion (PWIN and P1500, respectively)...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27615264/the-effect-of-steroid-hormones-on-the-physical-performance-of-boys-and-girls-during-an-olympic-weightlifting-competition
#14
Blair Crewther, Zbigniew Obminski, Christian Cook
PURPOSE: To examine the steroid hormone effect on the physical performance of young athletes during an Olympic weightlifting competition. METHODS: 26 boys and 26 girls were monitored across 2 weightlifting competitions. Pre- and post-competition testosterone (T), cortisol (C) and dehydroepiandrosterone-sulfate (DHEA-s) were measured in blood, with pre-event free T (FT) and the free androgen index (FAI) calculated. Body mass (BM) and weightlifting performance were recorded...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27362890/baseline-ability-makes-a-larger-contribution-to-race-performance-in-high-school-sprinters-than-race-experience-or-training-exposure
#15
Kristine E Lynch, Alun Thomas, Bryan Gibson
PURPOSE: There has long been a debate regarding the importance of talent versus training in athletic performance. In this study we sought to quantify their relative contributions to the race performance of high-school sprinters. METHODS: Using race results from the athletic.net website, we identified high-school athletes who participated in at least one race in both 9th and 12th grade in the 100 m, 200 m or 400 m. Athletes with a record of racing before high school were excluded from the analyses...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27295031/maturity-associated-variation-in-functional-characteristics-of-elite-youth-tennis-players
#16
Gillian K Myburgh, Sean P Cumming, Manuel Coelho E Silva, Karl Cooke, Robert M Malina
PURPOSE: To evaluate relationships among skeletal maturity, body size, and functional capacities of elite junior tennis players. METHODS: Participants were 88 elite British Junior tennis players (44 male; 44 female), 8-16 years of age (12.4 } 1.9 years). Skeletal age estimated maturty. Anthropometry, grip strength, countermovement jump, squat jump, forehand agility, backhand agility, Yo-Yo, 5-m, 10-m and 20-m sprints were measured. Comparative analysis for each sex was performed, relating advanced maturers (Male: 15; Female: 29) to a combination of on-time and late maturers (Male: 29; Female: 31)...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27046937/associations-between-balance-and-muscle-strength-power-performance-in-male-youth-athletes-of-different-maturity-status
#17
Raouf Hammami, Anis Chaouachi, Issam Makhlouf, Urs Granacher, David G Behm
: Balance, strength and power relationships may contain important information at various maturational stages to determine training priorities. PURPOSE: The objective was to examine maturity-specific relationships of static/dynamic balance with strength and power measures in young male athletes. METHODS: Soccer players (N = 130) aged 10-16 were assessed with the Stork and Y balance (YBT) tests. Strength/power measures included back extensor muscle strength, standing long jump (SLJ), countermovement jump (CMJ), and 3-hop jump tests...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27046936/maturity-physical-ability-technical-skill-and-coaches-perception-of-semi-elite-adolescent-australian-footballers
#18
Ashley J Cripps, Luke Hopper, Christopher Joyce
PURPOSE: To confirm the effect of maturational differences on anthropometric and physical testing and explore the effect of maturation on technical skill and coaches' perceptions of skill in adolescent Australian footballers. METHODS: Athletes were recruited from a semielite under 16 competition (n = 94, age 15.7 ± 0.3 years) and completed anthropometric, physical, and technical skill tests. Coaches from each team provided subjective ratings of athletes' technical skills...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/26757487/effects-of-sport-specific-training-intensity-on-sleep-patterns-and-psychomotor-performance-in-adolescent-athletes
#19
Haresh T Suppiah, Chee Yong Low, Michael Chia
PURPOSE: Adolescent student-athletes face time constraints due to athletic and scholastic commitments, resulting in habitually shortened nocturnal sleep durations. However, there is a dearth of research on the effects of sleep debt on student-athlete performance. The study aimed to (i) examine the habitual sleep patterns (actigraphy) of high-level student-athletes during a week of training and academic activities, (ii) ascertain the effects of habitual sleep durations experienced by high-level student-athletes on psychomotor performance, and (iii) examine the impact of sport training intensities on the sleep patterns of high-level student-athletes that participate in low and high intensity sports...
November 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27618471/contrast-loading-increases-upper-body-power-output-in-junior-volleyball-athletes
#20
Ilias Smilios, Konstantinos Sotiropoulos, Karolina Barzouka, Marios Christou, Savvas P Tokmakidis
PURPOSE: This study examined the acute effects of contrast loading on mechanical power output during bench-press throws in junior volleyball players. METHOD: Eleven males (age: 16.5±0.5 years) performed a contrast loading and a control protocol. The contrast protocol included the execution of 3 bench-throws with a 30% load of 1RM, after 3 min a conditioning set of 5 bench-throws with a 60% load of 1RM and after 3 and 5 min two more sets of 3 bench-throws with a 30% load of 1RM...
September 6, 2016: Pediatric Exercise Science
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