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Athletic Ability Assessment

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https://www.readbyqxmd.com/read/28422802/validity-and-repeatability-of-a-novel-dynamic-visual-acuity-system
#1
Mariko Hirano, Natalie Hutchings, Trefford Simpson, Kristine Dalton
PURPOSE: In many sports, athletes rely on visual information from the environment to perform. Some literature suggests athletes have superior visual abilities to non-athletes, particularly on tasks representative of the visual demands of their sport, such as dynamic acuity, eye movement accuracy and speed, and peripheral vision. Other literature suggests there is no difference between athletes and non-athletes, at least when standard clinical assessments are employed. A limitation of the literature is that almost none of the research has been conducted with standardized, validated tools...
May 2017: Optometry and Vision Science: Official Publication of the American Academy of Optometry
https://www.readbyqxmd.com/read/28418696/eccentric-exercise-kinesiology-tape-and-balance-in-healthy-men
#2
Simona Hosp, Ramona Folie, Robert Csapo, Michael Hasler, Werner Nachbauer
CONTEXT:   Deficits in balance have been identified as a possible risk factor for knee injuries in athletes. Despite a lack of evidence for its effectiveness, kinesiology tape (KT) is widely used to prevent knee injuries. OBJECTIVE:   To investigate the influence of KT at the knee joint on balance ability in healthy men after eccentric exercise. DESIGN:   Crossover study. SETTING:   University laboratory. PATIENTS OR OTHER PARTICIPANTS:   Twelve young men with no history of lower limb injury volunteered for the study (age = 23...
April 18, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28391723/the-impact-of-patellar-tendinopathy-on-sports-and-work-performance-in-active-athletes
#3
Astrid J De Vries, Wendy Koolhaas, Johannes Zwerver, Ron L Diercks, Kari Nieuwenhuis, Henk Van Der Worp, Sandra Brouwer, Inge Van Den Akker-Scheek
Greater insight into sports and work performance of athletes with patellar tendinopathy (PT) will help establish the severity of this common overuse injury. Primary aim of this study is to investigate the impact of PT on sports and work performance. Seventy seven active athletes with PT (50 males; age 28.1 ± 8.2 years; Victorian Institute of Sports Assessment Patella 56.4 ± 12.3) participated in this survey. Sports performance, work ability and work productivity were assessed using the Oslo Sports Trauma Research Center overuse injury questionnaire, the single-item Work Ability Index and the Quantity and Quality questionnaire, respectively...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28346887/high-resolution-mass-spectrometry-as-an-alternative-detection-method-to-tandem-mass-spectrometry-for-the-analysis-of-endogenous-steroids-in-serum
#4
Federico Ponzetto, Julien Boccard, Norbert Baume, Tiia Kuuranne, Serge Rudaz, Martial Saugy, Raul Nicoli
Recently, steroid hormones quantification in blood showed a promising ability to detect testosterone doping and interesting complementarities with the urinary module of the Athlete Biological Passport (ABP). In this work, an ultra-high pressure liquid chromatography-high-resolution mass spectrometry (UHPLC-HRMS) method was developed for the quantification of eleven endogenous steroids in serum. The performance of the full scan and targeted SIM acquisition modes was evaluated and compared to the performance of tandem mass spectrometry (MS/MS)...
March 18, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28344456/caffeine-ingestion-improves-repeated-freestyle-sprints-in-elite-male-swimmers
#5
Paul S R Goods, Grant Landers, Sacha Fulton
The purpose of this investigation was to determine the efficacy of a moderate dose of caffeine to improve repeat-sprint performance in elite freestyle sprinters. Nine highly trained male swimmers performed 6 x 75 m freestyle sprints on two occasions 1-h after consuming either 3 mg·kg(-1) caffeine (CAF), or placebo, in a cross-over manner. Capillary blood samples for the analysis of blood lactate concentration and pH were collected after the 1(st), 3(rd), and 5(th) sprint, while heart rate and perceived exertion (RPE) were collected after every sprint...
March 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28338355/the-potential-for-a-targeted-strength-training-programme-to-decrease-asymmetry-and-increase-performance-a-proof-of-concept-in-sprinting
#6
Scott R Brown, Erin R Feldman, Matt R Cross, Eric R Helms, Bruno Marrier, Pierre Samozino, Jean-Benoît Morin
The global application of horizontal force (FH) via hip extension is related to improvements in sprint performance (e.g. maximal velocity [vmax] and power [Pmax]). Little is known regarding the contribution of individual-leg FH and how a difference between the legs (asymmetry) might subsequently affect sprint performance. We assessed a single male athlete for pre-post outcomes of a targeted hip extension training programme on FH asymmetry and sprint performance metrics. An instrumented non-motorised treadmill was used to obtain individual-leg and global sprint kinetics and determine the athlete's strong and weak leg, with regards to the ability to produce FH while sprinting...
March 24, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28328713/the-effect-of-standard-strength-vs-contrast-strength-training-on-the-development-of-sprint-agility-repeated-change-of-direction-and-jump-in-junior-male-soccer-players
#7
Mehréz Hammami, Yassine Negra, Roy J Shephard, Mohamed Souhaiel Chelly
Hammami, M, Negra, Y, Shephard, RJ, and Chelly, MS. The effect of standard strength vs. contrast strength training on the development of sprint, agility, repeated change of direction, and jump in junior male soccer players. J Strength Cond Res 31(4): 901-912, 2017-The aim was to compare the impact of 2 differing strength training (ST) programs on the athletic performance of junior male soccer players at a critical phase during their competitive season. Participants aged 16.0 ± 0.5 years were randomly assigned between control (C, n = 12), standard ST (n = 16), and contrast strength training (CST, n = 16), each performed twice a week...
April 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28319734/novel-mechanical-impact-simulator-designed-to-generate-clinically-relevant-anterior-cruciate-ligament-ruptures
#8
Nathaniel A Bates, Nathan D Schilaty, Christopher V Nagelli, Aaron J Krych, Timothy E Hewett
BACKGROUND: Over 250,000 anterior cruciate ligament ruptures occur each year; therefore, it is important to understand the underlying mechanisms of these injuries. The objective of the current investigation was to develop and analyze an impact test device that consistently produces anterior cruciate ligament failure in a clinically relevant manner. METHOD: A mechanical impact simulator was developed to simulate the ground reaction force impulse generated from landing in a physiologic and clinically relevant manner...
March 10, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28315285/effects-of-plyometric-training-on-physical-fitness-in-prepuberal-soccer-athletes
#9
Yassine Negra, Helmi Chaabene, Senda Sammoud, Raja Bouguezzi, Mohamed Aymen Abbes, Younés Hachana, Urs Granacher
This study aimed at examining the effects of plyometric training on stable (SPT) vs. unstable (UPT) surfaces on physical fitness in prepuberal soccer players. Male athletes were randomly assigned to SPT (n=18; age=12.7±0.2 years) or UPT (n=16; age=12.2±0.5 years). Both groups conducted 3 regular soccer training sessions per week combined with either 2 SPT or UPT sessions. Assessment of jumping ability (countermovement jump [CMJ], and standing long jump [SLJ]), speed (10-m, 20-m, 30-m sprint), agility (Illinois agility test [IAT]), and balance (stable [SSBT], unstable [USBT] stork balance test; stable [SYBT], unstable [UYBT] Y balance test) was conducted pre-and post-training...
March 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28295634/the-utility-of-salivary-testosterone-and-cortisol-concentration-measures-for-assessing-the-stress-responses-of-junior-athletes-during-a-sporting-competition
#10
Blair T Crewther, Zbigniew Obmiński, Joanna Orysiak, Emad A S Al-Dujaili
BACKGROUND: This study examined the utility of salivary testosterone (T) and cortisol (C) concentration measures for assessing the acute stress responses of junior athletes during a sporting competition. METHODS: Paired capillary blood and saliva samples were taken from 71 junior athletes (45 males, 26 females) before and after a simulated Olympic weightlifting competition. The concentration measures of salivary T and C were referenced against blood total T (TT) and C (TC) concentrations...
March 13, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28287543/modified-drop-tower-impact-tests-for-american-football-helmets
#11
G Alston Rush, R Prabhu, Gus A Rush, Lakiesha N Williams, M F Horstemeyer
A modified National Operating Committee on Standards for Athletic Equipment (NOCSAE) test method for American football helmet drop impact test standards is presented that would provide better assessment of a helmet's on-field impact performance by including a faceguard on the helmet. In this study, a merger of faceguard and helmet test standards is proposed. The need for a more robust systematic approach to football helmet testing procedures is emphasized by comparing representative results of the Head Injury Criterion (HIC), Severity Index (SI), and peak acceleration values for different helmets at different helmet locations under modified NOCSAE standard drop tower tests...
February 19, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28282749/visual-abilities-distinguish-pitchers-from-hitters-in-professional-baseball
#12
David Klemish, Benjamin Ramger, Kelly Vittetoe, Jerome P Reiter, Surya T Tokdar, Lawrence Gregory Appelbaum
This study aimed to evaluate the possibility that differences in sensorimotor abilities exist between hitters and pitchers in a large cohort of baseball players of varying levels of experience. Secondary data analysis was performed on 9 sensorimotor tasks comprising the Nike Sensory Station assessment battery. Bayesian hierarchical regression modelling was applied to test for differences between pitchers and hitters in data from 566 baseball players (112 high school, 85 college, 369 professional) collected at 20 testing centres...
February 15, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28282479/musculoskeletal-injury-profile-of-circus-artists-a-systematic-review-of-the-literature
#13
REVIEW
H Eg Wolfenden, M Angioi
BACKGROUND: The circus arts involve a high degree of acrobatic, athletic, and aesthetic ability with extreme physical demands placed on performers. An understanding of the injury profile is required to guide prevention. AIM: To provide the first systematic review to enhance understanding of circus-related injuries and to provide a foundation for future preventative intervention. METHODS: MEDLINE, Scopus, and Web of Science were searched from conception to March 2016 using key search terms relating to circus artists and injury...
March 2017: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/28236259/a-retrospective-cross-sectional-and-longitudinal-study-of-the-effects-of-age-on-cns-vital-signs-scores-in-high-school-athletes
#14
Sharon D Rogers, Patrick J Smith, Alexandra J Stephenson, D Erik Everhart
INTRODUCTION: Current recommendations for concussion management acknowledge the importance of objective assessments of neuropsychological (NP) ability, and computerized NP assessments have been widely integrated into the concussion management protocols of high schools. The optimal intervals for baseline test administration in high-school athletes are currently uncertain. The ability to accurately detect subtle NP deficits is particularly important for high-school athletes, in which concussions are increasingly recognized for adverse effects to the developing brain...
February 24, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28217571/returning-to-sport-after-anterior-cruciate-ligament-reconstruction-in-amateur-sports-men-a-retrospective-study
#15
Angela Notarnicola, Giuseppe Maccagnano, Federico Barletta, Leonardo Ascatigno, Leopoldo Astuto, Antonio Panella, Silvio Tafuri, Biagio Moretti
BACKGROUND: According to the literature, 95% of professional athletes return to their sport after anterior cruciate ligament (ACL) reconstruction surgery. The main objective of this study was to verify the return to sport after ACL reconstruction in a homogenous group of amateur sportsmen and sportswomen in a series of Italian patients. MATERIALS AND METHODS: We designed a retrospective study in which we analyzed the amateur sports patients operated for ACL reconstruction...
October 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28214098/is-perceived-athlete-leadership-quality-related-to-team-effectiveness-a-comparison-of-three-professional-sports-teams
#16
Katrien Fransen, S Alexander Haslam, Clifford J Mallett, Niklas K Steffens, Kim Peters, Filip Boen
OBJECTIVES: Researchers have argued that leadership is one of the most important determinants of team effectiveness. The present study examined the extent to which the perceived quality of athlete leadership was related to the effectiveness of elite sports teams. DESIGN: Three professional football teams (N=135) participated in our study during the preparation phase for the Australian 2016 season. METHODS: Players and coaching staff were asked to assess players' leadership quality in four leadership roles (as task, motivational, social, and external leader) via an online survey...
January 24, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28209597/athletic-groin-pain-part-2-a-prospective-cohort-study-on-the-biomechanical-evaluation-of-change-of-direction-identifies-three-clusters-of-movement-patterns
#17
A Franklyn-Miller, C Richter, E King, S Gore, K Moran, S Strike, E C Falvey
BACKGROUND: Athletic groin pain (AGP) is prevalent in sports involving repeated accelerations, decelerations, kicking and change-of-direction movements. Clinical and radiological examinations lack the ability to assess pathomechanics of AGP, but three-dimensional biomechanical movement analysis may be an important innovation. AIM: The primary aim was to describe and analyse movements used by patients with AGP during a maximum effort change-of-direction task. The secondary aim was to determine if specific anatomical diagnoses were related to a distinct movement strategy...
March 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28187185/declines-in-marathon-performance-sex-differences-in-elite-and-recreational-athletes
#18
Gerald S Zavorsky, Kelly A Tomko, James M Smoliga
The first aim of this study was to determine the age group at which marathon performance declines in top male and female runners and to compare that to the runners of average ability. Another aim of this of this study was to examine the age-related yearly decline in marathon performance between age group winners and the average marathon finisher. Data from the New York (NYC), Boston, and Chicago marathons from 2001-2016 were analyzed. Age, sex, and location were used in multiple linear regression models to determine the rate of decline in marathon times...
2017: PloS One
https://www.readbyqxmd.com/read/28186497/agility-in-young-athletes-is-it-a-different-ability-from-speed-and-power
#19
Yassine Negra, Helmi Chaabene, Mehréz Hammami, Samiha Amara, Senda Sammoud, Bessem Mkaouer, Younés Hachana
Negra, Y, Chaabene, H, Hammami, M, Amara, S, Sammoud, S, Mkaouer, B, and Hachana, Y. Agility in young athletes: is it a different ability from speed and power? J Strength Cond Res 31(3): 727-735, 2017-Agility is an important physical attribute for successful participation in team sports events. Illinois agility test (IAT) and T-test have been widely used within adult team sports players to assess agility performance. The purposes of this investigation are (a) to study the reliability and the sensitivity of both IAT and T-test scores and (b) to explore to what extend the agility is an independent physical ability from speed time and jumping ability...
March 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28182510/the-effect-of-plyometric-training-volume-in-prepubertal-male-soccer-players-athletic-performance
#20
Helmi Chaabene, Yassine Negra
PURPOSE: The aim of this study was to assess and to compare the effects of 8-weeks in-season (2 sessions per-week) low and high-volume plyometric training (PT) on measures of physical fitness in prepubertal male soccer players. METHODS: A total of twenty-five soccer players were randomly assigned to low-volume plyometric training group (LPT; n=13; age = 12.68 ± 0.23 years; age at peak height velocity (APHV) = 14.25 ± 0.29 years, maturity-offset = -1.57 ± 0.29 years) and high-volume plyometric training group (HPT; n=12; age = 12...
February 9, 2017: International Journal of Sports Physiology and Performance
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