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https://www.readbyqxmd.com/read/28820856/perceived-wellness-associated-with-practice-and-competition-in-ncaa-division-i-football-players
#1
Aaron D Wellman, Sam C Coad, Patrick J Flynn, Ty K Siam, Christopher P McLellan
The present study assessed the influence of movement demands resulting from weekly practice sessions and games, on perceived wellness measurements taken post-game (Sunday) and 48 hours pre-game (Thursday) throughout the in-season period in National Collegiate Athletic Association (NCAA) division I football players. Thirty players were monitored using GPS receivers (Catapult Innovations OptimEye S5, Melbourne, Australia) during 12 games and 24 in-season practices. Movement variables included low-intensity distance, medium-intensity distance, high-intensity distance, sprint distance, total distance, player load, and acceleration and deceleration distance...
August 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28817506/maximum-distance-and-high-speed-distance-demands-by-position-in-ncaa-division-i-collegiate-football-games
#2
Gabriel J Sanders, Brad Roll, Corey A Peacock
The purpose of the study was to quantify the average and maximum distances traveled by NCAA division I football athletes during competitive games. Utilizing global positioning system (GPS) devices (Catapult Sports), total and low, moderate and high speed distances were quantified by each position. Understanding maximal workloads can enhance conditioning practice periodization protocols. A total of 40 football athletes were included in the analysis. For the data to be included, athletes were required to participate in ≥ 75% of the offensive or defensive snaps for any given game...
July 5, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28817504/movement-demands-and-perceived-wellness-associated-with-pre-season-training-camp-in-ncaa-division-i-college-football-players
#3
Aaron D Wellman, Sam C Coad, Patrick J Flynn, Christopher P McLellan, Mike Climstein
The aims of the present study were to examine the movement demands of pre-season practice in National Collegiate Athletic Association (NCAA) division I college football players using portable global positioning system (GPS) technology and to assess perceived wellness associated with pre-season practice to determine if GPS-derived variables from the preceding day influence perceived wellness the following day. Twenty-nine players were monitored using GPS receivers (Catapult Innovations, Melbourne, Australia) during 20 pre-season practices...
July 5, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28777247/a-comparison-of-pre-season-and-in-season-practice-and-game-loads-in-ncaa-division-i-football-players
#4
Aaron D Wellman, Sam C Coad, Patrick J Flynn, Ty K Siam, Christopher P McLellan
The aim of the present study was to quantify the individual practice and game loads throughout an NCAA division I football season to determine if significant differences exist between the practice loads associated with pre-season training camp and those undertaken during the in-season period. Thirty-one NCAA division I football players were monitored using GPS and IA (MinimaxX S5; Catapult Innovations, Melbourne, Australia) during 22 pre-season practices, 36 in-season practices, and 12 competitions. The season was divided into four distinct phases for data analysis: pre-season week 1 (pre-season1), pre-season week 2 (pre-season2), pre-season week 3 (pre-season3), and 12 in-season weeks...
July 31, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28747394/asymmetric-drop-coalescence-launches-fungal-ballistospores-with-directionality
#5
Fangjie Liu, Roger L Chavez, S N Patek, Anne Pringle, James J Feng, Chuan-Hua Chen
Thousands of fungal species use surface energy to power the launch of their ballistospores. The surface energy is released when a spherical Buller's drop at the spore's hilar appendix merges with a flattened drop on the adaxial side of the spore. The launching mechanism is primarily understood in terms of energetic models, and crucial features such as launching directionality are unexplained. Integrating experiments and simulations, we advance a mechanistic model based on the capillary-inertial coalescence between the Buller's drop and the adaxial drop, a pair that is asymmetric in size, shape and relative position...
July 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28717518/the-sharing-of-radiological-images-by-professional-mixed-martial-arts-fighters-on-social-media
#6
George Rahmani, Cormac W Joyce, Peter McCarthy
BACKGROUND: Mixed martial arts is a sport that has recently enjoyed a significant increase in popularity. This rise in popularity has catapulted many of these "cage fighters" into stardom and many regularly use social media to reach out to their fans. An interesting result of this interaction on social media is that athletes are sharing images of their radiological examinations when they sustain an injury. PURPOSE: To review instances where mixed martial arts fighters shared images of their radiological examinations on social media and in what context they were shared...
June 2017: Acta Radiologica Open
https://www.readbyqxmd.com/read/28713465/a-comparison-of-gps-workload-demands-in-match-play-and-small-sided-games-by-the-positional-role-in-youth-soccer
#7
Mathew Beenham, David J Barron, John Fry, Howard H Hurst, Antonio Figueirdo, Steve Atkins
The external demands of small-sided games (SSGs) according to the positional role are currently unknown. Using a Catapult Minimax X3 5 Hz GPS, with a 100 Hz tri-axial accelerometer, we compared the accumulated tri-axial player workload per min (PLacc·min(-1)) during friendly youth match play (MP) (11 vs. 11) and SSGs (2 vs. 2, 3 vs. 3, and 4 vs. 4). Significant differences existed between all SSGs and MP for PLacc·min(-1) (F = 21.91, p < 0.001, η2 = 0.38), and individual X (F = 27.40, p < 0.001, η2 = 0...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28700516/the-validity-of-real-time-data-generated-by-a-wearable-microtechnology-device
#8
Dan Weaving, Sarah Whitehead, Kevin Till, Ben Jones
The purpose of this study was to investigate the validity of global positioning system (GPS) and micro-electrical-mechanical-system (MEMS) data generated in real-time via a dedicated receiver. Post-session data acted as criterion as it is used to plan the volume and intensity of future training and is downloaded directly from the device. 25 professional rugby league players completed two training sessions wearing a MEMS device (Catapult S5, firmware version: 2.27). During sessions, real-time data was collected via the manufacturer receiver and dedicated software (Openfield v1...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28636528/three-dimensional-reconstruction-of-energy-stores-for-jumping-in-planthoppers-and-froghoppers-from-confocal-laser-scanning-microscopy
#9
Igor Siwanowicz, Malcolm Burrows
Jumping in planthopper and froghopper insects is propelled by a catapult-like mechanism requiring mechanical storage of energy and its quick release to accelerate the hind legs rapidly. To understand the functional biomechanics involved in these challenging movements, the internal skeleton, tendons and muscles involved were reconstructed in 3-D from confocal scans in unprecedented detail. Energy to power jumping was generated by slow contractions of hind leg depressor muscles and then stored by bending specialised elements of the thoracic skeleton that are composites of the rubbery protein resilin sandwiched between layers of harder cuticle with air-filled tunnels reducing mass...
June 21, 2017: ELife
https://www.readbyqxmd.com/read/28536347/the-current-use-of-stem-cells-in-bladder-tissue-regeneration-and-bioengineering
#10
REVIEW
Yvonne Y Chan, Samantha K Sandlin, Eric A Kurzrock, Stephanie L Osborn
Many pathological processes including neurogenic bladder and malignancy necessitate bladder reconstruction, which is currently performed using intestinal tissue. The use of intestinal tissue, however, subjects patients to metabolic abnormalities, bladder stones, and other long-term sequelae, raising the need for a source of safe and reliable bladder tissue. Advancements in stem cell biology have catapulted stem cells to the center of many current tissue regeneration and bioengineering strategies. This review presents the recent advancements in the use of stem cells in bladder tissue bioengineering...
January 6, 2017: Biomedicines
https://www.readbyqxmd.com/read/28360121/prosthetic-model-but-not-stiffness-or-height-affects-the-metabolic-cost-of-running-for-athletes-with-unilateral-transtibial-amputations
#11
Owen N Beck, Paolo Taboga, Alena M Grabowski
Running-specific prostheses enable athletes with lower limb amputations to run by emulating the spring-like function of biological legs. Current prosthetic stiffness and height recommendations aim to mitigate kinematic asymmetries for athletes with unilateral transtibial amputations. However, it is unclear how different prosthetic configurations influence the biomechanics and metabolic cost of running. Consequently, we investigated how prosthetic model, stiffness, and height affect the biomechanics and metabolic cost of running...
July 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28293144/from-the-elastica-compass-to-the-elastica-catapult-an-essay-on-the-mechanics-of-soft-robot-arm
#12
C Armanini, F Dal Corso, D Misseroni, D Bigoni
An elastic rod is clamped at one end and has a dead load attached to the other (free) end. The rod is then slowly rotated using the clamp. When the load is smaller than the buckling value, the rod describes a continuous set of quasi-static forms and its end traces a (smooth, convex and simple) closed curve, which would be a circle if the rod were rigid. The closed curve is analytically determined through the integration of the Euler's elastica, so that for sufficiently small loads the mechanical system behaves as an 'elastica compass'...
February 2017: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28276911/the-effect-of-physical-contact-on-changes-in-fatigue-markers-following-rugby-union-field-based-training
#13
Gregory Roe, Joshua Darrall-Jones, Kevin Till, Padraic Phibbs, Dale Read, Jonathon Weakley, Andrew Rock, Ben Jones
Repeated physical contact in rugby union is thought to contribute to post-match fatigue; however, no evidence exists on the effect of contact activity during field-based training on fatigue responses. Therefore, the purpose of this study was to examine the effect of contact during training on fatigue markers in rugby union players. Twenty academy rugby union players participated in the cross-over study. The magnitude of change in upper- and lower-body neuromuscular function (NMF), whole blood creatine kinase concentration [CK] and perception of well-being was assessed pre-training (baseline), immediately and 24 h post-training following contact and non-contact, field-based training...
July 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28265552/a-timely-shift-from-shotgun-to-targeted-proteomics-and-how-it-can-be-groundbreaking-for-cancer-research
#14
REVIEW
Sara S Faria, Carlos F M Morris, Adriano R Silva, Micaella P Fonseca, Patrice Forget, Mariana S Castro, Wagner Fontes
The fact that cancer is a leading cause of death all around the world has naturally sparked major efforts in the pursuit of novel and more efficient biomarkers that could better serve as diagnostic tools, prognostic predictors, or therapeutical targets in the battle against this type of disease. Mass spectrometry-based proteomics has proven itself as a robust and logical alternative to the immuno-based methods that once dominated the field. Nevertheless, intrinsic limitations of classic proteomic approaches such as the natural gap between shotgun discovery-based methods and clinically applicable results have called for the implementation of more direct, hypothesis-based studies such as those made available through targeted approaches, that might be able to streamline biomarker discovery and validation as a means to increase survivability of affected patients...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28193637/jumping-performance-of-flea-hoppers-and-other-mirid-bugs-hemiptera-miridae
#15
M Burrows, M Dorosenko
The order Hemiptera includes jumping insects with the fastest take-off velocities, all generated by catapult mechanisms. It also contains the large family Miridae or plant bugs. Here, we analysed the jumping strategies and mechanisms of six mirid species from high-speed videos and from the anatomy of their propulsive legs, and conclude that they use a different mechanism in which jumps are powered by the direct contractions of muscles. Three strategies were identified. First, jumping was propelled only by movements of the middle and hind legs, which were, respectively, 140% and 190% longer than the front legs...
May 1, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28153609/wearable-microtechnology-can-accurately-identify-collision-events-during-professional-rugby-league-match-play
#16
Billy T Hulin, Tim J Gabbett, Rich D Johnston, David G Jenkins
OBJECTIVES: Collision frequency during rugby league matches is associated with team success, greater and longer lasting fatigue and increased injury risk. This study researched the sensitivity and specificity of microtechnology to count collision events during rugby league matches. DESIGN: Diagnostic accuracy study. METHODS: While wearing a microtechnology device (Catapult, S5), eight professional rugby league players were subjected to a total of 380 collision events during matches...
January 23, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28124290/bulk-isolation-of-basidiospores-from-wild-mushrooms-by-electrostatic-attraction-with-low-risk-of-microbial-contaminations
#17
Kiran Lakkireddy, Ursula Kües
The basidiospores of most Agaricomycetes are ballistospores. They are propelled off from their basidia at maturity when Buller's drop develops at high humidity at the hilar spore appendix and fuses with a liquid film formed on the adaxial side of the spore. Spores are catapulted into the free air space between hymenia and fall then out of the mushroom's cap by gravity. Here we show for 66 different species that ballistospores from mushrooms can be attracted against gravity to electrostatic charged plastic surfaces...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28104752/reduced-prosthetic-stiffness-lowers-the-metabolic-cost-of-running-for-athletes-with-bilateral-transtibial-amputations
#18
Owen N Beck, Paolo Taboga, Alena Marie Grabowski
Inspired by the spring-like action of biological legs, running-specific prostheses are designed to enable athletes with lower-limb amputations to run. Yet, manufacturer recommendations for prosthetic stiffness and height may not optimize running performance. Therefore, we investigated the effects of using different prosthetic configurations on the metabolic cost and biomechanics of running. Five athletes with bilateral transtibial amputations each performed fifteen trials on a force-measuring treadmill at 2...
January 19, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27979983/accelerated-deflation-promotes-homogeneous-airspace-liquid-distribution-in-the-edematous-lung
#19
You Wu, Tam L Nguyen, Carrie E Perlman
Edematous lungs contain regions with heterogeneous alveolar flooding. Liquid is trapped in flooded alveoli by a pressure barrier-higher liquid pressure at the border than in the center of flooded alveoli-that is proportional to surface tension, T Stress is concentrated between aerated and flooded alveoli, to a degree proportional to T Mechanical ventilation, by cyclically increasing T, injuriously exacerbates stress concentrations. Overcoming the pressure barrier to redistribute liquid more homogeneously between alveoli should reduce stress concentration prevalence and ventilation injury...
April 1, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27971988/nothing-ventured-nothing-gained-is-the-innovation-fund-the-catapult-to-a-new-generation-of-care-concepts-and-a-competitive-market-in-health-care-in-germany
#20
D Droeschel, L Vollmer, J Helfrich, S Walzer
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
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