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Athletic Ability Assessment

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https://www.readbyqxmd.com/read/28214098/is-perceived-athlete-leadership-quality-related-to-team-effectiveness-a-comparison-of-three-professional-sports-teams
#1
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
#2
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
#3
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
#4
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
#5
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
https://www.readbyqxmd.com/read/28121198/supercompensation-kinetics-of-physical-qualities-during-a-taper-in-team-sport-athletes
#6
Bruno Marrier, Julien Robineau, Julien Piscione, Mathieu Lacome, Alexis Peeters, Christophe Hausswirth, Jean-Benoît Morin, Yann Le Meur
PURPOSE: Peaking for major competition is considered critical for maximizing team sports performance. However, there is little scientific information available to guide coaches in prescribing efficient tapering strategies for team sports players. The aim of this study was to monitor the changes in physical performance in elite team sports players during a 3-week taper following a pre-season training camp. METHODS: Ten male international rugby sevens players were tested before (Pre) and after (Post) a 4-week pre-season training camp focusing on high-intensity training and strength training with moderate loads, and once each week during a subsequent 3-week taper (T1, T2, T3)...
January 25, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28114431/jump-squat-and-half-squat-exercises-selective-influences-on-speed-power-performance-of-elite-rugby-sevens-players
#7
Irineu Loturco, Lucas A Pereira, José E Moraes, Katia Kitamura, César C Cal Abad, Ronaldo Kobal, Fábio Y Nakamura
The aim of this study was to evaluate the relation between the maximum mean propulsive power (MPP) obtained in the loaded jump squat (JS) and half squat (HS) exercises and functional performances in vertical jumps, 40 m linear speed (VEL) and change-of-direction (COD) tests, using the median split technique. Twenty-two male rugby sevens players from the Brazilian National Olympic Team (Rio-2016) performed vertical jumping tests (squat and countermovement jumps [SJ and CMJ]), JS and HS exercises, COD speed test and sprinting velocity in 40 m, in this order...
2017: PloS One
https://www.readbyqxmd.com/read/28111337/worse-outcomes-of-patients-with-hfe-hemochromatosis-with-persistent-increases-in-transferrin-saturation-during-maintenance-therapy
#8
Edouard Bardou-Jacquet, Fabrice Lainé, Pascal Guggenbuhl, Jeff Morcet, Caroline Jézéquel, Dominique Guyader, Romain Moirand, Yves Deugnier
BACKGROUND & AIMS: Even if patients with hemochromatosis maintain low serum levels of ferritin, they still have an increased risk of general and joint symptoms, which reduce quality of life. This could be related to persistently increased transferrin saturation. We assessed whether duration of exposure to increased transferrin saturation during maintenance therapy is associated with more severe general and joint symptoms. METHODS: We performed a longitudinal cohort study of 266 individuals homozygous for the C282Y substitution in HFE, seen at a tertiary reference center in Rennes, France, and followed for 3 or more years after initial iron removal...
January 19, 2017: Clinical Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28094488/effects-of-leg-contrast-strength-training-on-sprint-agility-and-repeated-change-of-direction-performance-in-male-soccer-players
#9
Mehréz Hammami, Yassine Negra, Roy J Shephard, Mohamed Souhaiel Chelly
BACKGROUND: Contrast training is popular technique among individuals who are involved in dynamic sports, having as its goal an increase in dynamic muscular performance. It is characterized by the use of high and low loads in the same strength training session. The present investigation aimed to determine the effects of adding 8--weeks of contrast strength training (CSTP) to regular soccer practice in U--17 male soccer players during the competitive season. We hypothesized that CSTP would enhance their performance...
January 17, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28090147/regression-shrinkage-and-neural-models-in-predicting-the-results-of-400-metres-hurdles-races
#10
K Przednowek, J Iskra, A Maszczyk, M Nawrocka
This study presents the application of regression shrinkage and artificial neural networks in predicting the results of 400-metres hurdles races. The regression models predict the results for suggested training loads in the selected three-month training period. The material of the research was based on training data of 21 Polish hurdlers from the Polish National Athletics Team Association. The athletes were characterized by a high level of performance. To assess the predictive ability of the constructed models a method of leave-one-out cross-validation was used...
December 2016: Biology of Sport
https://www.readbyqxmd.com/read/28065584/mechanical-dispersion-by-strain-echocardiography-a-novel-tool-to-diagnose-hypertrophic-cardiomyopathy-in-athletes
#11
Frédéric Schnell, David Matelot, Magalie Daudin, Gaelle Kervio, Philippe Mabo, François Carré, Erwan Donal
BACKGROUND: Previous studies have demonstrated that global longitudinal strain (GLS) is altered in patients with hypertrophic cardiomyopathy (HCM) in comparison with athletes. Nevertheless, these results rely on studies comparing sedentary patients with HCM with healthy athletes. The aims of this study were to confirm these findings in an appropriate group of athletes with HCM and to study the additive value of novel parameters (i.e., mechanical dispersion and exercise GLS). METHODS: Thirty-six athletes with HCM were prospectively included and were compared with 36 sedentary patients with HCM, 36 healthy athletes, and 36 sedentary control subjects of similar age...
January 5, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/27991484/relationship-between-the-handball-specific-complex-test-and-intermittent-field-test-performance-in-elite-professional-handball-players
#12
René Schwesig, Souhail Hermassi, Birgit Hoffmeyer, Lars Irlenbusch, Georg Fieseler, Frank Noack, Karl S Delank, Tim J Gabbett, Mohamed S Chelly
BACKGROUND: We investigated the relationship between the handball complex-test (HBCT) and two selected field tests in elite handball players. METHODS: Twenty one handball players (age: 25.2 ± 5.1 years) from the First Professional German League completed; the HBCT performed twice, total distance (TD) covered in the Yo-Yo Intermittent Recovery Test and repeated shuttle sprint ability (RSA) (6 x (15 + 15 m)) starting every 20 s. RSA results were evaluated in three ways: best time (RSAbest), total time (RSATT) and decrement (RSAdec)...
December 16, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27958445/thermography-for-skin-temperature-evaluation-during-dynamic-exercise-a-case-study-on-an-incremental-maximal-test-in-elite-male-cyclists
#13
Nicola Ludwig, Athos Trecroci, Marco Gargano, Damiano Formenti, Andrea Bosio, Ermanno Rampinini, Giampietro Alberti
The use of thermal imaging in monitoring the dynamic of skin temperature during prolonged physical exercise is central to assess athletes' ability to dissipate heat from the skin surface to the environment. In this study, seven elite cyclists completed an incremental maximal cycling test to evaluate their skin temperature response under controlled-environment conditions. Thermal images have been analyzed using a method based on maxima detection (T<sub>max</sub>). Data confirmed a reduction in skin temperature due to vasoconstriction during the exercise, followed by a temperature increment after exhaustion...
December 1, 2016: Applied Optics
https://www.readbyqxmd.com/read/27925640/diagnosis-and-management-of-distal-clavicle-osteolysis
#14
Steven F DeFroda, Christopher Nacca, Gregory R Waryasz, Brett D Owens
Distal clavicle osteolysis is an uncommon condition that most commonly affects weight lifters and other athletes who perform repetitive overhead activity. Although this condition most commonly presents in young active men, it is becoming increasing more common in women with the rise in popularity of body building and extreme athletics. Distal clavicle osteolysis can be debilitating, especially in those with rigorous training regimens, preventing exercise because of pain with activities such as bench presses and chest flies...
December 7, 2016: Orthopedics
https://www.readbyqxmd.com/read/27918654/cold-water-immersion-and-contrast-water-therapy-do-not-improve-short-term-recovery-following-resistance-training
#15
Christos K Argus, James R Broatch, Aaron C Petersen, Remco Polman, David J Bishop, Shona Halson
PURPOSE: An athlete's ability to recover quickly is important when there is limited time between training and competition. As such, recovery strategies are commonly used to expedite the recovery process. The purpose of this study was to determine the effectiveness of both cold water immersion (CWI) and contrast water therapy (CWT) compared to control on short-term recovery (<4h) following a single full-body resistance training session. METHODS: Thirteen males (age, 26 ± 5 years; weight, 79 ± 7 kg; height, 177 ± 5 cm) were assessed for perceptual (fatigue and soreness) and performance measures (maximal voluntary isometric contraction (MVC) of the knee extensors, weighted and unweighted countermovement jumps) prior to and immediately following the training session...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27912040/patient-reported-outcomes-measurement-information-system-physical-function-item-bank-version-1-0-physical-function-assessment-for-athletic-patient-populations
#16
Leif P Madsen, Todd A Evans, Kelli R Snyder, Carrie L Docherty
CONTEXT: The Patient-Reported Outcomes Measurement Information System (PROMIS) item banks have been validated for general populations, but their application to high-functioning patient populations remains speculative. OBJECTIVE: To examine the measurement properties of the PROMIS physical function item bank, version 1.0, when applied to individuals representing high levels of physical ability. DESIGN: Cross-sectional study. SETTING: National Collegiate Athletic Association Division I and III collegiate athletic training rooms and intramural events...
September 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27898852/horse-species-symposium-biomechanics-of-the-exercising-horse
#17
Hilary M Clayton
In spite of having large height and body mass, horses are cursorial animals with an extensive gait repertoire and considerable athletic abilities. The limbs have evolved so that the heavy musculature is confined to the proximal limbs while the distal limbs are light in weight with a single functional digit and long, lightweight tendons to move and support the distal joints. These adaptations reduce the moment of inertia and decrease the energy expended to protract and retract the limbs during locomotion. There is a division of labor between the forelimbs, which have a pillar-like construction specialized for weight bearing, and the hind limbs, in which the more angulated joints provide leverage for the generation of propulsion...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27877150/the-level-of-vision-necessary-for-competitive-performance-in-rifle-shooting-setting-the-standards-for-paralympic-shooting-with-vision-impairment
#18
Peter M Allen, Keziah Latham, David L Mann, Rianne H J C Ravensbergen, Joy Myint
The aim of this study was to investigate the level of vision impairment (VI) that would reduce performance in shooting; to guide development of entry criteria to visually impaired (VI) shooting. Nineteen international-level shooters without VI took part in the study. Participants shot an air rifle, while standing, toward a regulation target placed at the end of a 10 m shooting range. Cambridge simulation glasses were used to simulate six different levels of VI. Visual acuity (VA) and contrast sensitivity (CS) were assessed along with shooting performance in each of seven conditions of simulated impairment and compared to that with habitual vision...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27874301/cognitive-predictors-of-performance-in-well-trained-table-tennis-players-with-intellectual-disability
#19
Debbie Van Biesen, Jennifer Mactavish, Janne Kerremans, Yves C Vanlandewijck
Evidence-based classification systems in Paralympic sport require knowledge of the underlying effect of impairment in a specific sport. This study investigated the relationship between cognition and tactical proficiency in 88 well-trained table tennis players with intellectual disability (ID; 29 women, 59 men, M ± SD IQ 59.9 ± 9.6). Data were collected at 3 competitions sanctioned by the International Federation for Para-Athletes with Intellectual Disabilities (INAS). A generic cognitive test consisting of 8 neuropsychological subtests was used to assess cognitive abilities relevant to sport (reaction time, processing speed, and decision speed; spatial visualization; fluid reasoning; memory; executive functioning; and visual processing)...
October 2016: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/27834613/patient-outcomes-utilizing-the-mulligan-concept-of-mwm-to-treat-intercollegiate-patients-diagnosed-with-lateral-ankle-sprain-an-a-priori-case-series
#20
James M May, Alan Nasypany, Julie Paolino, Russell Baker, Jeffrey Seegmiller
CONTEXT: While the incidence and re-injury rates of lateral ankle sprain (LAS) continue to persist at high rates across many sporting activities, further exploration of assessment and treatment beyond the traditional ligamentous and strength/proprioceptive model is warranted. Further, assessing and treating both arthrokinematic and osteokinematic changes associated with LAS can provide insight into a more diverse approach to treating ankle pathology. OBJECTIVE: To examine the clinical use of the Mulligan Concept MWM while treating patients diagnosed with an acute grade I or II LAS through authentic patient care...
November 11, 2016: Journal of Sport Rehabilitation
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