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https://www.readbyqxmd.com/read/27899276/a-comparison-of-the-physical-and-anthropometric-qualities-explanatory-of-talent-in-the-elite-junior-australian-football-development-pathway
#1
Carl T Woods, Ashley Cripps, Luke Hopper, Christopher Joyce
OBJECTIVES: To compare the physical and anthropometric qualities explanatory of talent at two developmental levels in junior Australian football (AF). DESIGN: Cross-sectional observational. METHODS: From a total of 134 juniors, two developmental levels were categorised; U16 (n=50; 15.6±0.3 y), U18 (n=84; 17.4±0.5 y). Within these levels, two groups were a priori defined; talent identified (U16; n=25; 15.7±0.2 y; U18 n=42; 17.5±0.4 y), non-talent identified (U16; n=25; 15...
November 23, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27837043/reliability-of-sargent-jump-test-in-4-to-5-year-old-children
#2
Carlos AyánPérez, José M CancelaCarral, Joaquín Lago-Ballesteros, Iván Martínez-Lemos
We assessed the test-retest reliability of the Sargent jump (VJ) for vertical jumping performed by 4 and 5 years old pre-schoolers. The VJ was administered three times (familiarization, test, and retest) to 163 children (mean age: 4.48 ± 0.5 years; 55.8% girls). The results were compared with those obtained in the standing long jump (SLJ) and in the 25 -m dash test to identify how its performance correlated with other measures of leg power. Systematic change in the mean and retest correlations with these other measures were used to help analyze VJ test-retest reliability...
November 11, 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27768554/the-influence-of-familiarization-on-physical-fitness-test-results-in-primary-school-aged-children
#3
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/27764544/association-of-plasma-25-hydroxyvitamin-d-with-physical-performance-in-physically-active-children
#4
Ikram Bezrati, Raouf Hammami, Mohamed Kacem Ben Fradj, Domenico Martone, Johnny Padulo, Moncef Feki, Anis Chaouachi, Naziha Kaabachi
Vitamin D is thought to regulate skeletal muscle function and boost physical performance. The aim of this study was to assess the relationship between vitamin D and physical performance in physically active children. This cross-sectional study included 125 children who practice football as a leisure activity. Plasma 25-hydroxyvitamin D (25-OHD) was assessed using a chemiluminescence immunoassay method. Vitamin D inadequacy was defined as 25-OHD < 20 ng/mL. Physical performance testing included measurements of muscle strength (maximal isometric contraction), jumping ability (vertical jump, standing broad jump, triple hop test), linear sprint (10 m and 20 m), and agility (9 × 4-m shuttle run)...
July 13, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/27763582/assessment-of-the-impact-of-regular-judo-practice-on-body-posture-balance-and-lower-limbs-mechanical-output-in-six-year-old-boys
#5
Robert Walaszek, Stanislaw Sterkowicz, Wieslaw Chwala, Katarzyna Sterkowicz-Przybycien, Katarzyna Walaszek, Marcin Burdacki, Artur Klys
BACKGROUND: Physical activity is beneficial for young children. The aim is to monitor the changes in body posture and balance, as well as in the level of lower limbs mechanical output in six-year-old boys practicing judo (JU) and in a group not practicing that sport (NT). METHODS: In 12 matched pairs of boys (JU+NT) body mass and height were measured and BMI was calculated at three time points (baseline, three months, six months). Body posture was evaluated with the use of Moiré method (TT, DTK, MR, LALBC-F, DALBS)...
October 20, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27757284/the-relationship-between-trunk-endurance-plank-tests-and-athletic-performance-tests-in-adolescent-soccer-players
#6
Atsushi Imai, Koji Kaneoka
BACKGROUND: Although it is believed that trunk function is important for athletic performance, few researchers have demonstrated a significant relationship between the trunk function and athletic performance. Recently, the prone plank and side plank tests have been used to assess trunk function. PURPOSE: The purpose of this study was to investigate the relationships between trunk endurance plank tests and athletic performance tests, including whether there is a relationship between long distance running and trunk endurance plank tests in adolescent male soccer players...
October 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27704644/mobility-and-muscle-strength-in-male-former-elite-endurance-and-power-athletes-aged-66-91%C3%A2-years
#7
S Manderoos, N Wasenius, M K Laine, U M Kujala, E Mälkiä, J Kaprio, S Sarna, H M Bäckmand, J A Kettunen, O J Heinonen, A M Jula, S Aunola, J G Eriksson
The aim of this cross-sectional study was to compare mobility and muscle strength in male former elite endurance and power athletes aged 66-91 years (n = 150; 50 men in both former elite athlete groups and in their control group). Agility, dynamic balance, walking speed, chair stand, self-rated balance confidence (ABC-scale), jumping height, and handgrip strength were assessed. Former elite power athletes had better agility performance time than the controls (age- and body mass index, BMI-adjusted mean difference -3...
October 5, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27579802/dynamic-balance-is-impaired-after-a-match-in-young-elite-soccer-players
#8
Massimiliano Pau, Federico Mereu, Marco Melis, Bruno Leban, Federica Corona, Gianfranco Ibba
PURPOSE: The aim of this study is to assess the effect of actual match effort on dynamic balance abilities in young elite soccer players. METHODS: Seventeen Under 15 male players who compete at national level participated in the study. Their dynamic balance was assessed by having them jump starting with both feet on the ground in a standing position and land on one foot only. Their vertical time to stabilization (vTTS) and postural sway were calculated before and after 35 min of an unofficial match...
May 21, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27512557/effect-of-a-trampoline-exercise-on-the-anthropometric-measures-and-motor-performance-of-adolescent-students
#9
Bahman Aalizadeh, Hassan Mohammadzadeh, Ali Khazani, Ali Dadras
BACKGROUND: Physical exercises can influence some anthropometric and fitness components differently. The aim of present study was to evaluate how a relatively long-term training program in 11-14-year-old male Iranian students affects their anthropometric and motor performance measures. METHODS: Measurements were conducted on the anthropometric and fitness components of participants (n = 28) prior to and following the program. They trained 20 weeks, 1.5 h/session with 10 min rest, in 4 times trampoline training programs per week...
2016: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/27442335/actn3-r577x-gene-variant-is-associated-with-muscle-related-phenotypes-in-elite-chinese-sprint-power-athletes
#10
Ruoyu Yang, Xunzhang Shen, Yubin Wang, Sarah Voisin, Guang Cai, Yongnan Fu, Wangyu Xu, Nir Eynon, David J Bishop, Xu Yan
The ACTN3 R577X polymorphism (rs1815739) has been shown to influence athletic performance. The aim of the current study was to investigate the prevalence of this polymorphism in elite Chinese track and field athletes, and to explore its effects on athletes' level of competition and lower-extremity power. We compared the ACTN3 R577X genotypes and allele frequencies in 59 elite sprint/power athletes, 44 elite endurance athletes, and 50 healthy controls from Chinese Han origin. We then subcategorized the athletes into international-level and national-level, and investigated the effects of ACTN3 genotype on lower-extremity power...
July 16, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27401899/parental-separation-a-risk-for-the-psychomotor-development-of-children-aged-28-to-32%C3%A2-months-a-cross-sectional-study
#11
Nadine Kacenelenbogen, Michèle Dramaix-Wilmet, M Schetgen, M Roland, Isabelle Godin
BACKGROUND: In Western countries, about a quarter of children are affected by parental separation and a number of authors have previously investigated how familial structure impacts children's health. The purpose of the work: to analyze the psychomotor development of children aged 28 to 32 months based on family structure (parents together or separated), independently of the influence of socio-economic environment that is well documented. To analyse the psychomotor development of children younger than 3 years based on family structure (parents together or separated) independently of the influence of socio-economic environment that is well documented...
2016: BMC Pediatrics
https://www.readbyqxmd.com/read/27398916/the-physical-and-athletic-performance-characteristics-of-division-i-collegiate-female-soccer-players-by-position
#12
Robert G Lockie, Matthew R Moreno, Adrina Lazar, Ashley J Orjalo, Dominic V Giuliano, Fabrice G Risso, DeShaun L Davis, Jeff B Crelling, John R Lockwood, Farzad Jalilvand
Playing positions in soccer can exhibit different movement demands during a match, contributing to variations in physical and performance characteristics. NCAA soccer features different substitution rules when compared to FIFA-sanctioned matches, which could influence each players' characteristics. Therefore, this study determined the athletic performance characteristics of Division I female soccer players. Twenty-six players (3 goalkeepers; 8 defenders; 10 midfielders; 5 forwards) from the same squad completed assessments of: lower-body power (vertical and standing broad jump); linear (0-5, 0-10, 0-30 meter [m] sprint intervals) and change-of-direction (pro-agility shuttle; Arrowhead change-of-direction speed test) speed; and soccer-specific fitness (Yo-Yo Intermittent Recovery Test [YYIRT] levels 1 and 2)...
July 7, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27361274/vertical-jump-and-standing-long-jump-power-to-determine-lower-extremity-imbalance-and-injury-risk-2638-board-161-june-3-11-00-am-12-30-pm
#13
Suzanne M Konz
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27313344/the-effects-of-sole-vibration-stimulation-on-korean-male-professional-volleyball-players-jumping-and-balance-ability
#14
Yong-Youn Kim, Kyoung-Ok Min, Jung-Hyun Choi, Soon-Hee Kim
[Purpose] The purpose of this study was to investigate differences in jumping ability and lower limb balance ability elicited by plyometric training and vibration exercise, of volleyball players with and without ankle injuries, which frequently occur among Korean professional volleyball players. [Subjects and Methods] Twenty-eight volleyball players were divided into the following groups: plyometric with ankle injury (PAI) group; plyometric with non-ankle injury (PAN) group; vibrator with ankle injury (VAI) group; and vibrator with non-ankle injury (VAN) group...
May 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27294169/athletic-performance-at-the-national-basketball-association-combine-after-anterior-cruciate-ligament-reconstruction
#15
Nima Mehran, Phillip N Williams, Robert A Keller, Lafi S Khalil, Stephen J Lombardo, F Daniel Kharrazi
BACKGROUND: Anterior cruciate ligament (ACL) injuries are significant injuries in elite-level basketball players. In-game statistical performance after ACL reconstruction has been demonstrated; however, few studies have reviewed functional performance in National Basketball Association (NBA)-caliber athletes after ACL reconstruction. PURPOSE: To compare NBA Combine performance of athletes after ACL reconstruction with an age-, size-, and position-matched control group of players with no previous reported knee injury requiring surgery...
May 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27144955/sequencing-effects-of-balance-and-plyometric-training-on-physical-performance-in-youth-soccer-athletes
#16
Raouf Hammami, Urs Granacher, Issam Makhlouf, David G Behm, Anis Chaouachi
Hammami, R, Granacher, U, Makhlouf, I, Behm, DG, and Chaouachi, A. Sequencing effects of balance and plyometric training on physical performance in youth soccer athletes. J Strength Cond Res 30(12): 3278-3289, 2016-Balance training may have a preconditioning effect on subsequent power training with youth. There are no studies examining whether the sequencing of balance and plyometric training has additional training benefits. The objective was to examine the effect of sequencing balance and plyometric training on the performance of 12- to 13-year-old athletes...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27139591/the-effects-of-plyometric-training-on-change-of-direction-ability-a-meta-analysis
#17
Abbas Asadi, Hamid Arazi, Warren B Young, Eduardo Sáez de Villarreal
PURPOSE: To show a clear picture about the possible variables of enhancements of change-of-direction (COD) ability using longitudinal plyometric-training (PT) studies and determine specific factors that influence the training effects. METHODS: A computerized search was performed, and 24 articles with a total of 46 effect sizes (ESs) in an experimental group and 25 ESs in a control group were reviewed to analyze the role of various factors on the impact of PT on COD performance...
July 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27050241/effects-of-high-velocity-resistance-training-on-athletic-performance-in-prepuberal-male-soccer-athletes
#18
Yassine Negra, Helmi Chaabene, Mehréz Hammami, Younés Hachana, Urs Granacher
Negra, Y, Chaabene, H, Hammami, M, Hachana, Y, and Granacher, U. Effects of high-velocity resistance training on athletic performance in prepuberal male soccer athletes. J Strength Cond Res 30(12): 3290-3297, 2016-The aim of this study was to assess the effectiveness of a 12-week in-season low-to-moderate load high-velocity resistance training (HVRT) in addition to soccer training as compared with soccer training only on proxies of athletic performance in prepubertal soccer players. Twenty-four male soccer players performed 2 different protocols: (a) regular soccer training with 5 sessions per week (n = 11; age = 12...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26895356/influence-of-children-s-foot-type-on-their-physical-motor-performance
#19
Juan Francisco Arévalo-Mora, Maria Reina-Bueno, Pedro V Munuera
BACKGROUND: This cross-sectional study aimed to determine whether normal, flat, or high-arched feet corresponded to better performance of certain motor tests in children. METHODS: One hundred eighty-seven children (mean ± SD age, 11.15 ± 1.24 years) were recruited and divided into three groups: 96 with normal feet, 54 with high-arched feet, and 37 with low-arched feet. Nine motor trials were selected to assess motor performance: standing long jump, standing triple jump from each foot, standing vertical jump, shuttle run 10 × 5 m, standing-start 20-m sprint, static balance, dynamic balance on a beam of an inverted gym bench, and agility circuit...
January 2016: Journal of the American Podiatric Medical Association
https://www.readbyqxmd.com/read/26862858/the-application-of-a-multi-dimensional-assessment-approach-to-talent-identification-in-australian-football
#20
Carl T Woods, Annette J Raynor, Lyndell Bruce, Zane McDonald, Sam Robertson
This study investigated whether a multi-dimensional assessment could assist with talent identification in junior Australian football (AF). Participants were recruited from an elite under 18 (U18) AF competition and classified into two groups; talent identified (State U18 Academy representatives; n = 42; 17.6 ± 0.4 y) and non-talent identified (non-State U18 Academy representatives; n = 42; 17.4 ± 0.5 y). Both groups completed a multi-dimensional assessment, which consisted of physical (standing height, dynamic vertical jump height and 20 m multistage fitness test), technical (kicking and handballing tests) and perceptual-cognitive (video decision-making task) performance outcome tests...
July 2016: Journal of Sports Sciences
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