keyword
MENU ▼
Read by QxMD icon Read
search

catapult

keyword
https://www.readbyqxmd.com/read/28717518/the-sharing-of-radiological-images-by-professional-mixed-martial-arts-fighters-on-social-media
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
https://www.readbyqxmd.com/read/27967272/activity-profiles-in-international-female-team-handball-using-playerload-tm
#16
Eirik H Wik, Live S Luteberget, Matt Spencer
Team handball matches place diverse physical demands on players, which may result in fatigue and decreased activity levels. However, previous speed-based methods of quantifying player activity may not be sensitive for capturing short-lasting team handball-specific movements. PURPOSE: To examine activity profiles of a female team handball team and individual player profiles, using inertial measurement units (IMUs). METHODS: Match data was obtained from one female national team in nine international matches (n=85 individual player samples), using the Catapult OptimEye S5...
December 14, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27916601/gaucher-disease-progress-and-ongoing-challenges
#17
REVIEW
Pramod K Mistry, Grisel Lopez, Raphael Schiffmann, Norman W Barton, Neal J Weinreb, Ellen Sidransky
Over the past decades, tremendous progress has been made in the field of Gaucher disease, the inherited deficiency of the lysosomal enzyme glucocerebrosidase. Many of the colossal achievements took place during the course of the sixty-year tenure of Dr. Roscoe Brady at the National Institutes of Health. These include the recognition of the enzymatic defect involved, the isolation and characterization of the protein, the localization and characterization of the gene and its nearby pseudogene, as well as the identification of the first mutant alleles in patients...
January 2017: Molecular Genetics and Metabolism
https://www.readbyqxmd.com/read/27826498/functional-diversity-of-resilin-in-arthropoda
#18
REVIEW
Jan Michels, Esther Appel, Stanislav N Gorb
Resilin is an elastomeric protein typically occurring in exoskeletons of arthropods. It is composed of randomly orientated coiled polypeptide chains that are covalently cross-linked together at regular intervals by the two unusual amino acids dityrosine and trityrosine forming a stable network with a high degree of flexibility and mobility. As a result of its molecular prerequisites, resilin features exceptional rubber-like properties including a relatively low stiffness, a rather pronounced long-range deformability and a nearly perfect elastic recovery...
2016: Beilstein Journal of Nanotechnology
https://www.readbyqxmd.com/read/27736256/validity-of-10-hz-gps-and-timing-gates-for-assessing-maximum-velocity-in-professional-rugby-union-players
#19
Gregory Roe, Joshua Darrall-Jones, Christopher Black, William Shaw, Kevin Till, Ben Jones
PURPOSE: The purpose of this study was to investigate the validity of timing gates and 10 Hz GPS units (Catapult Optimeye S5) against a criterion measure (50 Hz radar gun) for assessing maximum sprint velocity (Vmax). METHODS: Nine male professional rugby union players performed three maximal 40 m sprints with three minutes rest between each effort with Vmax assessed simultaneously via timing gates, 10 Hz GPSOpen (Openfield software), GPSSprint (Sprint software) and radar gun...
October 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27713512/marangoni-effect-visualized-in-two-dimensions-optical-tweezers-for-gas-bubbles
#20
A Miniewicz, S Bartkiewicz, H Orlikowska, K Dradrach
In the report we demonstrate how, using laser light, effectively trap gas bubbles and transport them through a liquid phase to a desired destination by shifting the laser beam position. The physics underlying the effect is complex but quite general as it comes from the limited to two-dimension, well-known, Marangoni effect. The experimental microscope-based system consists of a thin layer of liquid placed between two glass plates containing a dye dissolved in a solvent and a laser light beam that is strongly absorbed by the dye...
October 7, 2016: Scientific Reports
keyword
keyword
87894
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"