keyword
MENU ▼
Read by QxMD icon Read
search

Athlete performance

keyword
https://www.readbyqxmd.com/read/29668045/when-does-the-influence-of-maturation-on-anthropometric-and-physical-fitness-characteristics-increase-and-subside
#1
Christopher Towlson, Stephen Cobley, Guy Parkin, Ric Lovell
The relationships between maturation and anthropometric and physical performance characteristics are dynamic and often asynchronous; confounding the capability to accurately evaluate performance during adolescence. This study aimed to (i) examine the influence of chronological age (CA) and somatic maturation (YPHV) upon anthropometric and physical performance parameters, and (ii) identify the transition/change time-points in these relationships using segmental regression. N=969 soccer players (8-18 years of age) completed anthropometric and physical test assessments, including a counter-movement jump (CMJ), agility T-test, 10 and 20m sprints, and multi-stage fitness test (MSFT)...
April 18, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29667867/excelling-at-youth-level-in-competitive-track-and-field-athletics-is-not-a-prerequisite-for-later-success
#2
Philip E Kearney, Philip R Hayes
Enhancing our understanding of athlete development would be valuable for coaches, parents and administrators to set realistic performance expectations and to advance youth sport policy. To this end, a database of track and field performances was examined. Records of 134,313 performances by athletes aged between 12 and 35 years in sprinting, throwing, jumping and middle distance events were analysed. Results revealed that a minority (Male, 9%; Female, 13%) of top 20 ranked senior athletes were also ranked in the top 20 at Under 13 (U13)...
April 18, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29667530/effects-of-developmental-age-on-symptom-reporting-and-neurocognitive-performance-in-youth-after-sports-related-concussion-compared-to-control-athletes
#3
Donna L Murdaugh, Kim E Ono, Sarah O Morris, Thomas G Burns
There is increased necessity to focus research on school-aged athletes with sports-related concussion (SRC). This study assessed differences in symptom reporting and neurocognitive performance in youth athletes who sustained a sports-related concussion. A total of 1345 concussed and 3529 nonconcussed athletes (ages 8-21) completed the Immediate Post-concussive Assessment and Cognitive Testing (ImPACT). Analyses of covariance were conducted in order to assess differences in neurocognitive performance and symptom reporting between the sports-related concussion and control groups across age ranges...
January 1, 2018: Journal of Child Neurology
https://www.readbyqxmd.com/read/29666559/assessing-performance-in-pre-season-wrestling-athletes-using-biomarkers
#4
Ionas Papassotiriou, Artemissia-Phoebe Nifli
Introduction: Although regular training introduces the desired changes in athletes' metabolism towards optimal final performance, literature is rarely focusing on the metabolic responses off-competition. Therefore, the aim of this study was to evaluate biochemical indices during typical preseason training in wrestling athletes. Materials and methods: Twenty male freestyle and Greco-roman wrestlers (14 to 31 years) followed a typical session of the preparatory phase...
June 15, 2018: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/29663863/athletic-identity-and-self-esteem-among-active-and-retired-paralympic-athletes
#5
Adriana Marin-Urquiza, José Pedro Ferreira, Debbie Van Biesen
Athletic identity (AI) has been suggested as a variable that can have an impact on the psychological health of the athletes upon retirement. The aim of this study was to provide more insight on the transition out of elite sport by assessing and comparing the extent of AI and self-esteem in an active group (AG) and a retired group (RG) of Paralympic athletes. Perceived stress and depressive symptoms were additionally assessed in the AG and RG, respectively. A non-probability sampling method was used to recruit active and retired Paralympic athletes (AG, n = 43; RG, n = 41, where 35 retired voluntarily and 6 retired involuntarily) with visual or physical impairments, from Dutch-, English-, Portuguese- and Spanish-speaking countries...
April 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29663013/bone-to-bone-integrations-were-complete-within-5-months-after-anatomical-rectangular-tunnel-anterior-cruciate-ligament-reconstruction-using-a-bone-patellar-tendon-bone-graft
#6
Hironari Masuda, Shuji Taketomi, Hiroshi Inui, Naoya Shimazaki, Nobuhiro Nishihara, Seikai Toyooka, Hirotaka Kawano, Takumi Nakagawa
PURPOSE: Anterior cruciate ligament (ACL) reconstruction using a bone-patellar tendon-bone (BTB) graft is known to provide secure fixation due to the direct bone-to-bone integration of the bone plug and bone tunnel. It is important to know the time required for bone integration when designing the postoperative rehabilitation protocol or deciding when the patient can return to competition-level activity, especially if the patient is an athlete. However, because reports are scarce, the period necessary for bone-to-bone integration after ACL reconstruction using a BTB graft remains unclear...
April 16, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29662910/outcomes-and-return-to-sport-after-revision-anterior-cruciate-ligament-reconstruction-in-adolescent-athletes
#7
Michael Saper, Stephanie Pearce, Joseph Shung, Robert Zondervan, Roger Ostrander, James R Andrews
Background: The number of adolescent anterior cruciate ligament (ACL) injuries is rising with increased participation in higher level athletics at earlier ages. With an increasing number of primary ACL reconstructions (ACLRs) comes a rise in the incidence of revision ACLRs. Purpose: To evaluate the clinical results of revision ACLR across a group of high-level adolescent athletes with at least 2-year follow-up. Study Design: Case series; Level of evidence, 4...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29662750/return-to-play-in-adolescent-athletes-with-symptomatic-spondylolysis-without-listhesis-a-meta-analysis
#8
REVIEW
Samuel C Overley, Steven J McAnany, Steve Andelman, Jun Kim, Robert K Merrill, Samuel K Cho, Sheeraz A Qureshi, Andrew C Hecht
Study Design: Meta-analysis. Objectives: To assess return to play (RTP) rates in adolescent athletes with lumbar spondylolysis without spondylolisthesis treated conservatively or operatively. Methods: A review of Medline, EMBASE, and Cochrane Reviews was performed. The pooled results were performed by calculating the effect size based on the logit event rate. Studies were weighted by the inverse of the variance. Confidence intervals were reported at 95%...
April 2018: Global Spine Journal
https://www.readbyqxmd.com/read/29659337/hyperandrogenic-athletes-performance-differences-in-elite-standard-200m-and-800m-finals
#9
Jonathan Ospina Betancurt, Maria S Zakynthinaki, Maria Jose Martinez-Patiño, Carlos Cordente Martinez
The purpose of this study was to examine whether the difference in elite-standard track and field performance between women athletes with and without hyperandrogenism reaches the 10-12% difference in performance between men and women, using only results from elite-standard track and field final competitions. Officially available data from two hyperandrogenic women (Caster Semenya and Dutee Chand) were compared with the characteristic performance of 200m and 800m elite-standard finals. The finishing times of Caster Semenya, before her ineligibility to compete in 2009 and after the suspension of the 2011 IAAF Hyperandrogenism Regulations were found to be respectively 1...
April 16, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29658807/effect-of-bright-light-therapy-on-delayed-sleep-wake-cycle-and-reaction-time-of-athletes-participating-in-the-rio-2016-olympic-games
#10
João Paulo P Rosa, Andressa Silva, Dayane F Rodrigues, Mário Antônio Simim, Fernanda V Narciso, Sergio Tufik, Jorge J Bichara, Sebastian Rafael D Pereira, Sidney C Da Silva, Marco Tulio de Mello
This study investigated the effect of using an artificial bright light on the entrainment of the sleep/wake cycle as well as the reaction times of athletes before the Rio 2016 Olympic Games. A total of 22 athletes from the Brazilian Olympic Swimming Team were evaluated, with the aim of preparing them to compete at a time when they would normally be about to go to bed for the night. During the 8-day acclimatization period, their sleep/wake cycles were assessed by actigraphy, with all the athletes being treated with artificial light therapy for between 30 and 45 min (starting at day 3)...
April 16, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29658533/accelerometer-profile-of-motion-of-the-pelvic-girdle-in-butterfly-swimming
#11
Zbigniew Staniak, Krzysztof Buśko, Michał Górski, Anna Pastuszak
PURPOSE: The aim of the study was to develop a method to measure and analyse kinematics of movement of the pelvic girdle in butterfly swimming in order to support training of technical skills. METHODS: A device for recording triaxial accelerations and triaxial rotational angular velocities was mounted on the dorsal part of the pelvic girdle of athlete. The measurements were performed in ten elite butterfly swimmers (age: 23.1 ± 3.7 years, body height: 187.6 ± 4...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29657843/impingement-around-the-hip-beyond-cam-and-pincer
#12
Niels Hendrik Bech, Daniel Haverkamp
In this review, we bring to the attention of the reader three relatively unknown types of hip impingement. We explain the concept of low anterior inferior iliac spine (AIIS) impingement, also known as sub-spine impingement, ischio-femoral impingement (IFI) and pelvi-trochanteric impingement. For each type of impingement, we performed a search of relevant literature.We searched the PubMed, Medline (Ovid) and Embase databases from 1960 to March 2016. For each different type of impingement, a different search strategy was conducted...
February 2018: EFORT open reviews
https://www.readbyqxmd.com/read/29657436/upper-extremity-weightlifting-injuries-diagnosis-and-management
#13
REVIEW
Kayvon Golshani, Mark E Cinque, Peter O'Halloran, Kenneth Softness, Laura Keeling, J Ryan Macdonell
Common upper extremity injuries in resistance training athletes include muscle strains, ligament sprains, pectoralis major tendon ruptures, distal biceps tendon ruptures, and chronic shoulder pain and capsulolabral injuries. While each injury is unique in its specific anatomic location and mechanism, each is preventable with proper exercise technique, safety and maintenance of muscle balance. Conservative treatment is the therapeutic modality of choice and these injuries generally resolve with workout modification, appropriate recovery, anti-inflammatory medication, and physical therapy...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29651902/shoulder-and-lower-back-joint-reaction-forces-in-seated-double-poling
#14
Marie Lund Ohlsson, Jonas Danvind, L Joakim Holmberg
Overuse injuries in the shoulders and lower back are hypothesized to be common in cross-country sit-skiing. Athletes with reduced trunk muscle control mainly sits with their knees higher than hips (KH). To reduce spinal flexion, a position with the knees below the hips (KL) was enabled for these athletes using a frontal trunk support. The aim of the study was to compare the shoulder joint (glenohumeral joint) and L4-L5 joint reactions between the sitting positions KL and KH. Five able-bodied female athletes performed submaximal and maximal exercise tests in the sitting positions KL and KH on a ski-ergometer...
April 13, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29651858/sleep-related-issues-for-recovery-and-performance-in-athletes
#15
Sarah Kölling, Rob Duffield, Daniel Erlacher, Ranel Venter, Shona L Halson
The body of research that reports the relevance of sleep in high-performance sports is growing steadily. While the identification of sleep cycles and diagnosis of sleep disorders is limited to lab-based assessment via polysomnography, the development of activity-based devices estimating sleep patterns provides greater insight into the sleep behaviour of athletes in ecological settings. Overall, small sleep quantity and/or poor quality appears to exist in many athletic populations, though this may be related to training and competition context...
April 13, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29651247/application-of-the-athlete-s-performance-passport-for-doping-control-a-case-report
#16
Sergei Iljukov, Stephane Bermon, Yorck O Schumacher
The efficient use of testing resources is a key issue in the fight against doping. The longitudinal tracking of sporting performances to identify unusual improvements possibly caused by doping, so-called "athlete's performance passport" (APP) is a new concept to improve targeted anti-doping testing. In fact, unusual performances by an athlete would trigger a more thorough testing program. In the present case report, performance data is modeled using the critical power concept for a group of athletes based on their past performances...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29651131/low-level-mitochondrial-heteroplasmy-modulates-dna-replication-glucose-metabolism-and-lifespan-in-mice
#17
Misa Hirose, Paul Schilf, Yask Gupta, Kim Zarse, Axel Künstner, Anke Fähnrich, Hauke Busch, Junping Yin, Marvin N Wright, Andreas Ziegler, Marie Vallier, Meriem Belheouane, John F Baines, Diethard Tautz, Kornelia Johann, Rebecca Oelkrug, Jens Mittag, Hendrik Lehnert, Alaa Othman, Olaf Jöhren, Markus Schwaninger, Cornelia Prehn, Jerzy Adamski, Kensuke Shima, Jan Rupp, Robert Häsler, Georg Fuellen, Rüdiger Köhling, Michael Ristow, Saleh M Ibrahim
Mutations in mitochondrial DNA (mtDNA) lead to heteroplasmy, i.e., the intracellular coexistence of wild-type and mutant mtDNA strands, which impact a wide spectrum of diseases but also physiological processes, including endurance exercise performance in athletes. However, the phenotypic consequences of limited levels of naturally arising heteroplasmy have not been experimentally studied to date. We hence generated a conplastic mouse strain carrying the mitochondrial genome of an AKR/J mouse strain (B6-mtAKR ) in a C57BL/6 J nuclear genomic background, leading to >20% heteroplasmy in the origin of light-strand DNA replication (OriL)...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29650310/electronic-health-record-with-computerized-decision-support-tools-for-the-purposes-of-a-pediatric-cardiovascular-heart-disease-screening-program-in-crete
#18
Ilias Chatzakis, Kostas Vassilakis, Christos Lionis, Ioannis Germanakis
BACKGROUND AND OBJECTIVE: Early detection of cardiovascular (CV) disease or associated risk factors during childhood is of paramount importance, allowing for early treatment or lifestyle modifications, respectively. The objective of this study was to describe the development of an electronic health record (EHR), with integrated computerized decision support system (CDSS), specifically designed for supporting the needs of a pilot pediatric CV disease screening program applied on primary school students of a Mediterranean island...
June 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29648975/the-short-term-impact-of-concussion-in-the-nhl-an-analysis-of-player-longevity-performance-and-financial-loss
#19
Sergio Michael Navarro, Rowland West Pettit, Heather Suzanne Haeberle, Salvatore J Frangiamore, Nadeem M Rahman, Lutul D Farrow, Mark S Schickendantz, Prem N Ramkumar
Many studies have focused on the long-term impact of concussions in professional sports, but few have investigated short-term effects. This study examines concussion effects on individual players in the National Hockey League (NHL) by assessing career length, performance, and salary. Contracts, transactions, injury reports, and performance statistics from 2008 to 2017 were obtained from the official NHL online publication. Players who sustained a concussion were compared to the 2008-2017 non-concussed player pool...
March 6, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29648933/influence-of-body-position-on-shoulder-and-trunk-muscle-activation-during-resisted-isometric-shoulder-external-rotation
#20
David A Krause, Lucas G Dueffert, Jaclyn L Postma, Eric T Vogler, Amy J Walsh, John H Hollman
BACKGROUND: External rotation (ER) strengthening of the shoulder is an integral component of rehabilitative and preventative programs for overhead athletes. A variety of shoulder ER strengthening exercises are reported, including those intended to integrate the core musculature. The purpose of this study was to examine ER torque and electromyographic (EMG) activation of shoulder and trunk muscles while performing resisted isometric shoulder ER in 3 positions (standing, side lying, and side plank)...
April 1, 2018: Sports Health
keyword
keyword
24883
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"