نتایج جستجو برای: athletes male student volunteers age

تعداد نتایج: 1158517  

Journal: :Journal of pediatric orthopedics 2014
Matthew D Milewski David L Skaggs Gregory A Bishop J Lee Pace David A Ibrahim Tishya A L Wren Audrius Barzdukas

BACKGROUND Much attention has been given to the relationship between various training factors and athletic injuries, but no study has examined the impact of sleep deprivation on injury rates in young athletes. Information about sleep practices was gathered as part of a study designed to correlate various training practices with the risk of injury in adolescent athletes. METHODS Informed conse...

2017
Michael Gromeier Dirk Koester Thomas Schack

In this cross-sectional study, the qualitative and quantitative throwing performance of male and female athletes (6 to 16 years of age) was analyzed. The goal of this study was to assess whether there were gender based qualitative and quantitative differences in throwing performance of young athletes, throughout three different age bands (childhood, pubescence, and adolescence). Furthermore, we...

2013
André Aschmann Beat Knechtle Marco Cribari Christoph Alexander Rüst Vincent Onywera Thomas Rosemann Romuald Lepers

BACKGROUND Endurance running performance of African (AF) and non-African (NAF) athletes is investigated, with better performances seen for Africans. To date, no study has compared the age of peak performance between AF and NAF runners. The present research is an analysis of the age and running performance of top AF and NAF athletes, using the hypothesis that AF athletes were younger and faster ...

Journal: :the journal of tehran university heart center 0
soheila dabiran faculty of medicine, medical sciences/university of tehran, tehran, iran. parichehr tootoonchi faculty of medicine, medical sciences/university of tehran, tehran, iran. amir sasan tootoonchi pediatrics, medical sciences/university of tehran, tehran, iran. gholamhasan khosravi faculty of medicine, medical sciences/university of tehran, tehran, iran. ahmad mohebi shaheed rajaie cardiovascular medical and research center, tehran, iran. hamidreza goodarzynejad tehran heart center, medical sciences/university of tehran, tehran, iran.

background: severe and prolonged physical training is associated with morphological and physiological cardiac changes, often termed as the “athlete’s heart”. echocardiographic features peculiar to elite iranian athletes have not been previously described. the aim was to examine the echocardiographic characteristics of highly trained iranian athletes involved in three different sports.   methods...

Journal: :Journal of clinical and experimental neuropsychology 2011
Lester B Mayers Thomas S Redick Sheila H Chiffriller Ashley N Simone Keith R Terraforte

OBJECTIVE To measure working memory capacity among a cohort of collegiate athletes and to compare results between athletes competing in head-contact-prone sports with those not subject to repeated head contacts. A secondary objective was to determine the effect of sport-related concussion on working memory capacity. DESIGN Ambidirectional cohort study. SETTING Athletics department at an Ame...

ژورنال: Physical Treatments 2018
Mohseni Zonouzi, Farnaz, Nasirzade, Alireza,

Purpose: Evaluation of joints behavioral symmetry of the lower limbs to produce a smooth, rhythmic movement is one of the topics in the field of biomechanics of running. This study investigated joints local and global symmetry while jogging in young male athletes.  Methods: This was a quasi-experimental study. Random sampling method was used and the participants of the study included 15 health...

2014
M. Sawczuk A. Maciejewska-Karłowska P. Cięszczyk A. Leońska-Duniec

UNLABELLED The GNB3 gene encodes the beta 3 subunit of heterotrimeric G-proteins that are key components of intracellular signal transduction between G protein-coupled receptors (GPCR) and intracellular effectors and might be considered as a potential candidate gene for physical performance. OBJECTIVES The aim of this study was to compare frequency distribution of the common C to T polymorphi...

Background. It is because athletes’ physique, physical strength and experience are vital in sports. Objectives. This study was conducted to confirm the relative age effect in Taekwondo, which is an important factor in sports. Methods. Data on the date of birth of 12,054 Taekwondo athletes registered in the Korean Sports Association and data on the date of birth of 11,034,421 public data by th...

Journal: :Journal of sports science & medicine 2015
Mark J Connick Emma M Beckman Sean M Tweedy

Marathon runners are ranked in 5-year age groups. However the extent to which 5-year groupings facilitates equitable competition has not been evaluated. The aim of this study was to evaluate the effect of relative age in male and female marathon running. Marathon finishing times for the top ten male (aged 20-69 years) and female athletes (aged 20-64 years) were obtained from the 2013 New York a...

Journal: :The Journal of nervous and mental disease 2015
Joseph Biederman Leah Feinberg James Chan Bamidele O Adeyemo K Yvonne Woodworth Walter Panis Neal McGrath Saurabha Bhatnagar Thomas J Spencer Mai Uchida Tara Kenworthy Rebecca Grossman Ross Zafonte Stephen V Faraone

A recent meta-analysis documented a significant statistical association between mild traumatic brain injury (mTBI) and attention deficit hyperactivity disorder (ADHD) (Adeyemo et al., 2014), but the direction of this effect was unclear. In this study, we hypothesized that ADHD would be an antecedent risk factor for mTBI. Participants were student athletes ages 12 to 25 who had sustained a mTBI ...

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