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https://www.readbyqxmd.com/read/27906965/do-elite-and-amateur-soccer-players-outperform-non-athletes-on-neurocognitive-functioning-a-study-among-8-12-year-old-children
#1
Lot Verburgh, Erik J A Scherder, Paul A M Van Lange, Jaap Oosterlaan
AIM: Research suggested a positive association between physical fitness and neurocognitive functioning in children. Aim of the present study is to investigate possible dose-response relationships between diverse daily physical activities and a broad range of neurocognitive functions in preadolescent children. Furthermore, the relationship between several sedentary behaviours, including TV-watching, gaming and computer time, and neurocognitive functioning will be investigated in this group of children...
2016: PloS One
https://www.readbyqxmd.com/read/27905859/baseline-neurocognitive-performance-and-clearance-for-athletes-to-return-to-contact
#2
Breton M Asken, James R Clugston, Aliyah R Snyder, Russell M Bauer
CONTEXT:  Computerized neurocognitive assessments are commonly used to manage sport-related concussion. Variations in baseline performance may influence neurocognitive performance after injury as well as the amount of time needed for an athlete to be cleared for return to sport participation. OBJECTIVE:  To investigate the relationship between mean baseline Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) scores and postconcussion reliable decline as well as the association between postconcussion cognitive decline and days missed after injury...
December 1, 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27895590/brain-functional-connectivity-is-different-during-voluntary-concentric-and-eccentric-muscle-contraction
#3
Wan X Yao, Zhiguo Jiang, Jinqi Li, Changhao Jiang, Crystal G Franlin, Jack L Lancaster, Yufei Huang, Guang H Yue
Previous studies report greater activation in the cortical motor network in controlling eccentric contraction (EC) than concentric contraction (CC) of human skeletal muscles despite lower activation level of the muscle associated with EC. It is unknown, however, whether the strength of functional coupling between the primary motor cortex (M1) and other involved areas in the brain differs as voluntary movements are controlled by a network of regions in the primary, secondary and association cortices. Examining fMRI-based functional connectivity (FC) offers an opportunity to measure strength of such coupling...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27874301/cognitive-predictors-of-performance-in-well-trained-table-tennis-players-with-intellectual-disability
#4
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/27858306/menthol-a-fresh-ergogenic-aid-for-athletic-performance
#5
Christopher J Stevens, Russ Best
The application of menthol has recently been researched as a performance-enhancing aid for various aspects of athletic performance including endurance, speed, strength and joint range of motion. A range of application methods has been used including a mouth rinse, ingestion of a beverage containing menthol or external application to the skin or clothing via a gel or spray. The majority of research has focussed on the use of menthol to impart a cooling sensation on athletes performing endurance exercise in the heat...
November 17, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27846308/the-challenge-of-evaluating-the-intensity-of-short-actions-in-soccer-a-new-methodological-approach-using-percentage-acceleration
#6
Karin Sonderegger, Markus Tschopp, Wolfgang Taube
PURPOSE: There are several approaches to quantifying physical load in team sports using positional data. Distances in different speed zones are most commonly used. Recent studies have used acceleration data in addition in order to take short intense actions into account. However, the fact that acceleration decreases with increasing initial running speed is ignored and therefore introduces a bias. The aim of our study was to develop a new methodological approach that removes this bias...
2016: PloS One
https://www.readbyqxmd.com/read/27833972/evaluation-of-normal-and-pathological-achilles-tendon-by-real-time-shear-wave-elastography
#7
Pompiliu HoraŢiu Petrescu, Dragoş Andrei Izvernariu, Cătălina Iancu, Gabriel Ovidiu Dinu, Dan Crişan, Simona Alina Popescu, Roxana Lucia Denisa Şirli, Bogdan Mihai Nistor, Ion Călin RăuŢia, Dorela CodruŢa Lăzureanu, Sorin Dema, Ion Radu Prejbeanu, Ioan Sporea
Tendinopathy covers a range of several tendon conditions, mostly caused by overuse but at least in Achilles tendon pathology, favored by obesity, diabetes, inflammatory and autoimmune conditions. Subclinical tendon pathology is difficult to diagnose, as magnetic resonance imaging (MRI) examinations are sometimes inconclusive and not cost-effective. Elastography is an ultrasound examination method that uses mechanical impulses to produce shear waves in the tissue of interest, then measures the tissue displacement and calculates the shear wave speed or the elastic modulus of the examined tissue...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27832925/ecological-validity-of-the-german-bruininks-oseretsky-test-of-motor-proficiency-2nd-edition
#8
Sabine Vinçon, Dido Green, Rainer Blank, Ekkehart Jenetzky
The diagnosis of Developmental Coordination Disorder (DCD) is based on poor motor coordination in the absence of other neurological disorders. In order to identify the presence of movement difficulties, a standardised motor assessment is recommended to determine the extent of movement problems which may contribute to deficits in daily task performance. A German version of the Bruininks-Oseretsky Test of Motor Proficiency, Second Edition (German BOT-2) was recently published. This study aimed to determine the ecological validity of the German BOT-2 by considering the relationship between assessment of fundamental motor skills with the BOT-2 and performance of everyday motor activities as evaluated by parents...
November 7, 2016: Human Movement Science
https://www.readbyqxmd.com/read/27821967/physical-and-balance-performance-following-exercise-induced-muscle-damage-in-male-soccer-players
#9
Muzaffar Ahmad Khan, Jamal Ali Moiz, Shahid Raza, Shalini Verma, M Y Shareef, Shahnawaz Anwer, Ahmad Alghadir
[Purpose] The present study aimed to determine the changes in physical and balance performance following exercise-induced muscle damage using a sport-specific protocol. [Subjects and Methods] Fifteen collegiate soccer players were asked to perform a sport-specific sprint protocol to induce muscle damage. The markers of muscle damage (soreness, range of motion, limb girth, muscle strength, creatine kinase and lactate dehydrogenase), physical performance (speed, agility and power) and balance (static and dynamic balance) were assessed at baseline and 24, 48 and 72 hours following the sprint protocol...
October 2016: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/27807521/assessment-of-isokinetic-muscle-function-in-korea-male-volleyball-athletes
#10
Chang-Gyun Kim, Bog Ja Jeoung
Volleyball players performed numerous repetitions of spike actions, which uses and requires strong and explosive force, and control of the muscles of the shoulder, lower back, and legs. Muscle imbalance is one of the main causes of sport injuries. The purpose of this study was to assess isokinetic muscle functions in male volleyball players. We thus aim to accurately evaluate their muscle functions, and identify the best training strategy to achieve optimal muscle strength balance in future training programs...
October 2016: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/27806673/sprint-performance-and-mechanical-outputs-computed-with-an-iphone-app-comparison-with-existing-reference-methods
#11
Natalia Romero-Franco, Pedro Jiménez-Reyes, Adrián Castaño-Zambudio, Fernando Capelo-Ramírez, Juan José Rodríguez-Juan, Jorge González-Hernández, Francisco Javier Toscano-Bendala, Víctor Cuadrado-Peñafiel, Carlos Balsalobre-Fernández
The purpose of this study was to assess validity and reliability of sprint performance outcomes measured with an iPhone application (named: MySprint) and existing field methods (i.e. timing photocells and radar gun). To do this, 12 highly trained male sprinters performed 6 maximal 40-m sprints during a single session which were simultaneously timed using 7 pairs of timing photocells, a radar gun and a newly developed iPhone app based on high-speed video recording. Several split times as well as mechanical outputs computed from the model proposed by Samozino et al...
November 3, 2016: European Journal of Sport Science
https://www.readbyqxmd.com/read/27806014/a-performance-analysis-of-a-stand-up-paddle-board-marathon-race
#12
AProf Ben Schram, Prof Wayne Hing, AProf Mike Climstein, AProf James Furness
Stand up paddle boarding (SUP) is a rapidly growing sport and recreational activity in which little scientific research exists. A review of the literature failed to identify a single article pertaining to the physiological demands of SUP competition. The purpose of this study was to conduct a performance analysis of a national level SUP marathon race. Ten elite SUP athletes (6 male, 4 female) were recruited from the Stand Up Paddle Surfing Association of Australia to have their race performance in the Australian Titles analyzed...
October 28, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27806004/the-validity-and-contributing-physiological-factors-to-30-15-intermittent-fitness-test-performance-in-rugby-league
#13
Tannath J Scott, Grant M Duthie, Jace A Delaney, Colin E Sanctuary, David A Ballard, Jeremy A Hickmans, Ben J Dascombe
This study examined the validity of the 30-15 Intermittent Fitness Test (30-15IFT) within rugby league. Sixty-three Australian elite and junior-elite rugby league players (22.5 ± 4.5 yr, 96.1. kg ± 9.5 kg, Σ7 skinfolds: 71.0 ± 18.7 mm) from a professional club participated in this study. Players were assessed for anthropometry (body mass, Σ7 skinfolds, lean mass index), prolonged high-intensity intermittent running (PHIR; measured by 30-15IFT), predicted aerobic capacity (MSFT) and power (AAS), speed (40 m sprint), repeated sprint and change of direction (COD - 505 agility test) ability prior to and following an 11 week pre-season training period...
October 27, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27793443/pressures-of-wilderness-improvised-wound-irrigation-techniques-how-do-they-compare
#14
John B Luck, Danielle Campagne, Roberto Falcón Banchs, Jason Montoya, Susanne J Spano
OBJECTIVE: Compare the pressures measured by improvised irrigation techniques to a commercial device and to prior reports. METHODS: Devices tested included a commercial 500-mL compressible plastic bottle with splash guard, a 10-mL syringe, a 10-mL syringe with a 14-ga angiocatheter (with needle removed), a 50-mL Sawyer syringe, a plastic bag punctured with a 14-ga needle, a plastic bottle with cap punctured by a 14-ga needle, a plastic bottle with sports top, and a bladder-style hydration system...
December 2016: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/27789430/training-loads-and-injury-risk-in-australian-football-differing-acute-chronic-workload-ratios-influence-match-injury-risk
#15
David L Carey, Peter Blanch, Kok-Leong Ong, Kay M Crossley, Justin Crow, Meg E Morris
AIMS: (1) To investigate whether a daily acute:chronic workload ratio informs injury risk in Australian football players; (2) to identify which combination of workload variable, acute and chronic time window best explains injury likelihood. METHODS: Workload and injury data were collected from 53 athletes over 2 seasons in a professional Australian football club. Acute:chronic workload ratios were calculated daily for each athlete, and modelled against non-contact injury likelihood using a quadratic relationship...
October 27, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27789273/evidence-for-acute-electrophysiological-and-cognitive-changes-following-routine-soccer-heading
#16
Thomas G Di Virgilio, Angus Hunter, Lindsay Wilson, William Stewart, Stuart Goodall, Glyn Howatson, David I Donaldson, Magdalena Ietswaart
INTRODUCTION: There is growing concern around the effects of concussion and sub-concussive impacts in sport. Routine game-play in soccer involves intentional and repeated head impacts through ball heading. Although heading is frequently cited as a risk to brain health, little data exist regarding the consequences of this activity. This study aims to assess the immediate outcomes of routine football heading using direct and sensitive measures of brain function. METHODS: Nineteen amateur football players (5 females; age 22±3y) headed machine-projected soccer balls at standardized speeds, modelling routine soccer practice...
October 23, 2016: EBioMedicine
https://www.readbyqxmd.com/read/27787466/relationship-between-running-performance-and-recovery-stress-state-in-collegiate-soccer-players
#17
Nicholas A Coker, Klarie M Ake, David L Griffin, Stephen J Rossi, Jim L McMillan, Adam J Wells
The purpose of this study was to evaluate the relationship between changes in running performance and the stress-recovery state in collegiate soccer players. Running performance was evaluated in seven Division I NCAA male soccer players (179.39±5.24 cm; 75.46±5.98 kg; 20.37±1.41 yrs.) via global positioning system over the course of 12 competitive games in a single season. The regular season was divided into four competitive blocks: B1 (n=3), B2 (n=3), B3 (n=3) and B4 (n=3). Total distance and distance covered while engaging in walking, jogging, low-speed running, high-speed running, sprinting, low-intensity running and high-intensity running were assessed during each block...
October 17, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27776080/relationship-between-individualized-training-impulse-and-aerobic-fitness-measures-in-hurling-players-across-a-training-period
#18
Shane Malone, Kieran Collins
Malone, S and Collins, K. Relationship between individualized training impulse and aerobic fitness measures in Hurling players across a training period. J Strength Cond Res 30(11): 3140-3145, 2016-The current study examined the association between individual internal training load (individualized training impulse, iTRIMP) and aerobic fitness variables in male hurling players. Twenty hurling players (age, 25.5 ± 3.2 years; height, 178.9 ± 3.2 cm; body mass, 78.5 ± 4.5 kg) performed treadmill testing for V[Combining Dot Above]O2max, running economy (RE), and the speed at blood lactate concentrations of 2 mmol·L (S2) and 4 mmol·L (S4) on separate occasions before and after an 8-week training period...
November 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27768546/exercise-training-improved-body-composition-cardiovascular-function-and-physical-fitness-of-5-year-old-children-with-obesity-or-normal-body-mass
#19
Sijie Tan, Cheng Chen, Mingyang Sui, Lunan Xue, Jianxiong Wang
OBJECTIVES: To explore the effects of exercise training on body composition, cardiovascular function, and physical fitness in 5-year-old obese and lean children. METHODS: 42 obese and 62 lean children were randomly allocated into exercise and control groups separately. Body composition, cardiovascular function, and physical fitness were measured at baseline and the end of the intervention. The exercise groups participated in 10 weeks of supervised moderate intensity exercise training (at 50% of heart rate reserve), 50 training sessions in total...
October 21, 2016: Pediatric Exercise Science
https://www.readbyqxmd.com/read/27747845/actn3-r577x-polymorphism-is-not-associated-with-team-sport-athletic-status-in-italians
#20
Myosotis Massidda, Valeria Bachis, Laura Corrias, Francesco Piras, Marco Scorcu, Claudia Culigioni, Daniele Masala, Carla M Calò
BACKGROUND: The ACTN3 gene may influence performance in team sports, in which sprint action and high-speed movements, regulated by the anaerobic energy system, are crucial to the ultimate success of a match. The aim of this study was to determine the association between the ACTN3 R577X (rs1815739) polymorphism and elite team sport athletic status in Italian male athletes. METHODS: We compared the genotype and allele frequency of the ACTN3 R577X polymorphism between team sport athletes (n = 75), endurance athletes (n = 40), sprint/power athletes (n = 64), and non-athletic healthy controls (n = 192) from Italy...
December 2015: Sports Medicine—Open
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