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https://www.readbyqxmd.com/read/28544949/the-influence-of-shoe-aging-on-children-running-biomechanics
#1
Alexis Herbaut, Pascale Chavet, Maxime Roux, Nils Guéguen, Franck Barbier, Emilie Simoneau-Buessinger
Athletic children are prone to overuse injuries, especially at the heel and knee. Since footwear is an extrinsic factor of lower limb injury risk, the aim of this study was to assess the influence of shoe aging on children running biomechanics. Fourteen children active in sports participated in a laboratory biomechanical evaluation. A new pair of shoes was provided to each participant at an inclusion visit. Four months later, the participants performed a running task and their kinematics and kinetics were assessed both with their used shoes and with a new pair of shoes identical to the first...
May 17, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28543819/classifying-trunk-strength-impairment-according-to-the-activity-limitation-caused-in-wheelchair-rugby-performance
#2
Viola C Altmann, Brenda E Groen, Anne L Hart, Yves C Vanlandewijck, Noël L W Keijsers
International Federations in Paralympic sport should develop evidence based classification, based on the relative strength of association between impairment and activities that determine sport specific performance. The purpose of the current study was to assess the relationship between trunk strength impairment and three activities that determine performance in Wheelchair Rugby, and to determine whether this relationship supports the concept of "natural classes". Trunk muscle strength and three determinants of performance were assessed in 27 athletes The correlations between lateral trunk muscle strength and the determinant tilting the chair, and between forward trunk muscle strength and the determinants 1 m acceleration and sprint momentum were calculated...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28543630/preliminary-validation-of-the-perceived-locus-of-causality-scale-for-academic-motivation-in-the-context-of-university-studies-ploc-u
#3
Manuel Sánchez de Miguel, Izarne Lizaso, Daniel Hermosilla, Carlos-Maria Alcover, Marios Goudas, Enrique Arranz-Freijó
BACKGROUND: Research has shown that self-determination theory can be useful in the study of motivation in sport and other forms of physical activity. The Perceived Locus of Causality (PLOC) scale was originally designed to study both. AIM: The current research presents and validates the new PLOC-U scale to measure academic motivation in the university context. We tested levels of self-determination before and after academic examinations. Also, we analysed degree of internalization of extrinsic motivation in students' practical activities...
May 25, 2017: British Journal of Educational Psychology
https://www.readbyqxmd.com/read/28542091/normative-data-for-critical-speed-and-d-for-high-level-male-rugby-players
#4
Mark Kramer, Ida E Clark, Nick Jamnick, Cody Strom, Robert W Pettitt
The critical speed (CS) concept helps characterize the aerobic and anaerobic fitness of an athlete. Rugby players should hypothetically have modest CS values but extremely high curvature constant (D') values, yet, normative data are currently unavailable. To develop normative data of CS and D' for high-level male rugby players, a total of 30 male rugby players, were recruited from the Eastern Cape of South Africa. All subjects performed the running 3-min all-out exercise test (3 MT) using global positioning system (GPS) technology to determine CS and D'...
March 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28541651/channel-crack-designed-gold-pu-sponge-for-highly-elastic-piezoresistive-sensor-with-excellent-detectability
#5
Yun-Hui Wu, Hai-Zhou Liu, Song Chen, Xuchu Dong, Ping-Ping Wang, Shuqi Liu, Yong Lin, Yong Wei, Lan Liu
It is a great challenge to fabricate piezoresistive sensors that possess high elasticity, large-area compliance and excellent detectability to satisfy both extremely tiny and large human activities monitoring. Herein, a novel and facile strategy is reported to manufacture highly elastic channel crack-based gold@PU sponge piezoresistive material. The elastic 3D conductive network is successfully prepared by gold ion sputtering, and channel cracks are skillfully designed on the 3D sponge skeletons. Such novel structure makes these fabricated sensors are capable of monitoring both tiny and large human motions, which originate from the nano-crack joint sensing mechanism and physical contact of conductive interconnected network...
May 25, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28541413/the-influence-of-the-apolipoprotein-e-apoe-gene-on-subacute-post-concussion-neurocognitive-performance-in-college-athletes
#6
Victoria C Merritt, Amanda R Rabinowitz, Peter A Arnett
Objective: The purpose of this study was to determine whether the ε4 allele of the APOE gene influences neurocognitive outcome following sports-related concussion. It was hypothesized that participants with an ε4 allele would show poorer neurocognitive performance and greater neurocognitive variability than those without an ε4 allele. Method: Participants included 57 concussed collegiate athletes (77.2% male) who participated in a concussion management program at a large university...
May 24, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28539880/transcranial-direct-current-stimulation-and-sports-performance
#7
Dylan J Edwards, Mar Cortes, Susan Wortman-Jutt, David Putrino, Marom Bikson, Gary Thickbroom, Alvaro Pascual-Leone
No abstract text is available yet for this article.
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28538496/committee-opinion-no-702-female-athlete-triad
#8
(no author information available yet)
The female athlete triad is a medical condition observed in physically active females involving three components: 1) low energy availability with or without disordered eating, 2) menstrual dysfunction, and 3) low bone density. An individual does not need to show clinical manifestations of all three components of the female athlete triad simultaneously to be affected by the condition. Consequences of these clinical conditions may not be completely reversible, so prevention, early diagnosis, and intervention are critical...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28538492/committee-opinion-no-702-summary-female-athlete-triad
#9
(no author information available yet)
The female athlete triad is a medical condition observed in physically active females involving three components: 1) low energy availability with or without disordered eating, 2) menstrual dysfunction, and 3) low bone density. An individual does not need to show clinical manifestations of all three components of the female athlete triad simultaneously to be affected by the condition. Consequences of these clinical conditions may not be completely reversible, so prevention, early diagnosis, and intervention are critical...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28538322/manifestations-of-proprioception-during-vertical-jumps-to-specific-heights
#10
Artur Struzik, Bogdan Pietraszewski, Adam Kawczyński, Sławomir Winiarski, Grzegorz Juras, Andrzej Rokita
Artur, S, Bogdan, P, Kawczyński, A, Winiarski, S, Grzegorz, J, and Andrzej, R. Manifestations of proprioception during vertical jumps to specific heights. J Strength Cond Res 31(6): 1694-1701, 2017-Jumping and proprioception are important abilities in many sports. The efficiency of the proprioceptive system is indirectly related to jumps performed at specified heights. Therefore, this study recorded the ability of young athletes who play team sports to jump to a specific height compared with their maximum ability...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538317/effects-of-inertial-setting-on-power-force-work-and-eccentric-overload-during-flywheel-resistance-exercise-in-women-and-men
#11
Luis M Martinez-Aranda, Rodrigo Fernandez-Gonzalo
Martinez-Aranda, LM and Fernandez-Gonzalo, R. Effects of inertial setting on power, force, work and eccentric overload during flywheel resistance exercise in women and men. J Strength Cond Res 31(6): 1653-1661, 2017-Exercise load is a key component in determining end-point adaptations to resistance exercise. Yet, there is no information regarding the use of different inertia (i.e., loads) during isoinertial flywheel resistance exercise, a very popular high-intensity training model. Thus, this study examined power, work, force, and eccentric overload produced during flywheel resistance exercise with different inertial settings in men and women...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538304/a-performance-analysis-of-a-stand-up-paddle-board-marathon-race
#12
Ben L Schram, Wayne A Hing, Mike Climstein, James W Furness
Schram, BL, Hing, WA, Climstein, M, and Furness, JW. A performance analysis of a stand-up paddle board marathon race. J Strength Cond Res 31(6): 1552-1556, 2017-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...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538297/effect-of-game-design-goal-type-and-player-numbers-on-the-physiological-and-physical-demands-of-hurling-specific-small-sided-games
#13
Shane Malone, Kieran D Collins
Malone, S and Collins, K. Effect of game design, goal type, and player numbers on the physiological and physical demands of hurling-specific small-sided games. J Strength Cond Res 31(6): 1493-1499, 2017-The current study examined the effect that game design modification, goal type, and player numbers on the running performance and physiological demands of small-sided hurling games (SSG). Forty-eight hurling players (age, 25.5 ± 3.2 years; height, 178.9 ± 3.2 cm; body mass, 78.5 ± 4.5 kg) performed 4 types of SSG (possession [P], normal play [NP], regular goals [RG] and small goals [SG]) in 4-a-side, 5-a-side, and 6-a-side formats...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538294/effects-of-different-combinations-of-strength-power-and-plyometric-training-on-the-physical-performance-of-elite-young-soccer-players
#14
Ronaldo Kobal, Irineu Loturco, Renato Barroso, Saulo Gil, Rogério Cuniyochi, Carlos Ugrinowitsch, Hamilton Roschel, Valmor Tricoli
Kobal, R, Loturco, I, Barroso, R, Gil, S, Cuniyochi, R, Ugrinowitsch, C, Roschel, H, and Tricoli, V. Effects of different combinations of strength, power, and plyometric training on the physical performance of elite young soccer players. J Strength Cond Res 31(6): 1468-1476, 2017-The combination of strength (ST) and plyometric training (PT) has been shown to be effective for improving sport-specific performance. However, there is no consensus about the most effective way to combine these methods in the same training session to produce greater improvements in neuromuscular performance of soccer players...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28537791/mental-rotation-of-tactical-instruction-displays-affects-information-processing-demand-and-execution-accuracy-in-basketball
#15
Till Koopmann, Yvonne Steggemann-Weinrich, Jochen Baumeister, Daniel Krause
PURPOSE: In sports games, coaches often use tactic boards to present tactical instructions during time-outs (e.g., 20 s to 60 s in basketball). Instructions should be presented in a way that enables fast and errorless information processing for the players. The aim of this study was to test the effect of different orientations of visual tactical displays on observation time and execution performance. High affordances in visual-spatial transformation (e.g., mental rotation processes) might impede information processing and might decrease execution performance with regard to the instructed playing patterns...
May 24, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28536945/back-and-neck-pain-prevalence-and-their-association-with-physical-inactivity-domains-in-adolescents
#16
Catarina Covolo Scarabottolo, R Z Pinto, C B Oliveira, E F Zanuto, J R Cardoso, D G D Christofaro
PURPOSE: Back pain affects people of all ages. This may be associated with physical inactivity, and in the case of physical activity in different domains, the relationship with back pain is not clear in the literature. The aim of this study was to estimate the prevalence of low back and neck pain and investigate their association in different domains of physical inactivity. METHODS: 1011 randomly selected students participated in this study. Neck and back pain were assessed using the Nordic questionnaire, whereas the Baecke Physical Activity questionnaire was used to measure physical activity domains...
May 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28535726/the-effects-of-arousal-reappraisal-on-stress-responses-performance-and-attention
#17
Nadine Sammy, Paul A Anstiss, Lee J Moore, Paul Freeman, Mark R Wilson, Samuel J Vine
BACKGROUND AND OBJECTIVES: This study examined the effects of arousal reappraisal on cardiovascular responses, demand and resource evaluations, self-confidence, performance and attention under pressurized conditions. A recent study by Moore et al. [2015. Reappraising threat: How to optimize performance under pressure. Journal of Sport and Exercise Psychology, 37(3), 339-343. doi: 10.1123/jsep.2014-0186 ] suggested that arousal reappraisal is beneficial to the promotion of challenge states and leads to improvements in single-trial performance...
May 23, 2017: Anxiety, Stress, and Coping
https://www.readbyqxmd.com/read/28535363/elite-status-maintained-a-12-year-physiological-and-performance-follow-up-of-two-olympic-champion-rowers
#18
Pavle Mikulic, Nikola Bralic
This case study reports the results of a 12-year (2005-2016) follow-up study of two Olympic champion rowers. The rowers were prospective athletes at the junior level when the study began, and we monitored their relevant physiological and performance data annually. Our findings indicated that their V̇O2max gradually increased up to about 22 years of age and leveled off at a value of approximately 7 l·min(-1) with minimal fluctuations thereafter. However, the variables that directly influence the V̇O2max changed...
May 23, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28535099/do-sideline-concussion-assessments-predict-subsequent-neurocognitive-impairment-after-sport-related-concussion
#19
Alicia Sufrinko, Jamie McAllister-Deitrick, Melissa Womble, Anthony Kontos
CONTEXT:   Comprehensive, multi-domain assessment is the standard of care after sport-related concussion. However, the relationship between performance on sideline concussion-assessment tools and in-office computerized neurocognitive testing has received little attention, and the prognostic utility of sideline measures is unknown. OBJECTIVE:   To evaluate concurrent impairment on commonly used concussion measures 24 to 48 hours postinjury while also determining the predictive utility of sideline measures on computerized neurocognitive testing in the acute to subacute recovery periods postinjury...
May 23, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28534175/-aseptic-loosening-of-total-ankle-replacement-two-stage-revision-with-bone-augmentation-of-osseous-defects-and-secondary-prosthesis-implantation
#20
A Barg, M Wiewiorski, V Valderrabano
OBJECTIVE: To remove loosened ankle prosthesis components, perform osseous defect augmentation, and reimplant definitive prosthesis components to preserve ankle range of motion. INDICATIONS: Aseptic loosening of the tibial and/or talar ankle prosthesis components with substantial bone defect. CONTRAINDICATIONS: General surgical/anesthesiological risks, infections, critical soft tissue conditions, nonmanageable hindfoot instability, neurovascular impairment of the lower extremity, neuroarthropathy, substantial nonreconstructable osseous defects with or without cysts on the tibial and/or talar side, noncompliance, primary total ankle replacement (TAR) using intramedullary fixation (stem fixation), severely reduced bone quality, insulin-dependent diabetes mellitus, smoking, unrealistic patients' expectations, high activity in sports...
May 22, 2017: Operative Orthopädie und Traumatologie
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