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https://www.readbyqxmd.com/read/29339985/butterfly-sprint-swimming-technique-analysis-of-somatic-and-spatial-temporal-coordination-variables
#1
Marek Strzała, Arkadiusz Stanula, Piotr Krężałek, Andrzej Ostrowski, Marcin Kaca, Grzegorz Głąb
The aim of this study was to investigate somatic properties and force production of leg extensor muscles measured in the countermovement jump test (CMJ), as well as to analyse kinematic variables of sprint surface butterfly swimming. Thirty-four male competitive swimmers were recruited with an average age of 19.3 ± 1.83 years. Their average body height (BH) was 183.7 ± 5.93 cm, body fat content 10.8 ± 2.64% and body mass (BM) 78.3 ± 5.0 kg. Length measurements of particular body segments were taken and a counter movement jump (CMJ) as well as an all-out 50 m butterfly speed test were completed...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29337583/sudden-death-aversion-avoiding-superior-options-because-they-feel-riskier
#2
Jesse Walker, Jane L Risen, Thomas Gilovich, Richard Thaler
We present evidence of sudden-death aversion (SDA)-the tendency to avoid "fast" strategies that provide a greater chance of success, but include the possibility of immediate defeat, in favor of "slow" strategies that reduce the possibility of losing quickly, but have lower odds of ultimate success. Using a combination of archival analyses and controlled experiments, we explore the psychology behind SDA. First, we provide evidence for SDA and its cost to decision makers by tabulating how often NFL teams send games into overtime by kicking an extra point rather than going for the 2-point conversion (Study 1) and how often NBA teams attempt potentially game-tying 2-point shots rather than potentially game-winning 3-pointers (Study 2)...
January 15, 2018: Journal of Personality and Social Psychology
https://www.readbyqxmd.com/read/29333946/does-inside-passing-contribute-to-the-high-incidence-of-groin-injuries-in-soccer-a-biomechanical-analysis
#3
Thomas Dupré, Johannes Funken, Ralf Müller, Kristian R L Mortensen, Filip Gertz Lysdal, Markus Braun, Hartmut Krahl, Wolfgang Potthast
Groin injuries are common in soccer and often cause time-loss from training. While groin injuries have been linked to full effort kicking, the role of inside passing is unclear. Therefore, the purpose of this study was to investigate hip joint kinematics and muscle force, stress and contraction velocity for adductor longus and gracilis during inside passing. 3D kinematics of ten soccer players (23.4 yrs; 77.5 kg; 1.81 m) were captured with a motion capture system inside a Footbonaut. Muscle force and contraction velocity were determined with AnyBody Modelling System...
January 15, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29327823/a-previous-hamstring-injury-affects-kicking-mechanics-in-soccer-players
#4
Archit Navandar, Santiago Veiga, Gonzalo Torres, David Chorro, Enrique Navarro
BACKGROUND: Although the kicking skill is influenced by limb dominance and sex, how a previous hamstring injury affects kicking has not been studied in detail. Thus, the objective of this study was to evaluate the effect of sex and limb dominance on kicking in limbs with and without a previous hamstring injury. METHODS: 45 professional players (males: n=19, previously injured players=4, age=21.16 ± 2.00 years; females: n=19, previously injured players=10, age=22...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29325934/direct-perception-vs-inferential-processes-in-reading-an-opponent-s-mind-the-case-of-a-goalkeeper-facing-a-soccer-penalty-kick-comment-on-seeing-mental-states-an-experimental-strategy-for-measuring-the-observability-of-other-minds-by-cristina-becchio-et-al
#5
https://www.readbyqxmd.com/read/29323305/when-suffragists-kicked-open-the-lab-door
#6
Elizabeth Bruton
No abstract text is available yet for this article.
January 11, 2018: Nature
https://www.readbyqxmd.com/read/29321434/tricuspid-and-mitral-valve-regurgitation-with-bi-fascicular-block-following-a-horse-kick
#7
Tomoki Kokubun, Masayoshi Oikawa, Yasuhiro Ichijo, Yoshiyuki Matsumoto, Tetsuro Yokokawa, Kazuhiko Nakazato, Yoshiyuki Sato, Shinya Takase, Hiroharu Shinjo, Hitoshi Yokoyama, Hitoshi Suzuki, Shu-Ichi Saitoh, Yasuchika Takeishi
A 40-year-old man was transferred to our hospital following an isolated horse kick injury to the anterior chest wall. The case showed bi-fascicular block, severe tricuspid valve regurgitation due to ruptured chordae tendineae of the anterior leaflet, moderate mitral valve regurgitation due to prolapse of mitral anterior leaflet, and hypokinetic motion of the inferior septal wall. Both tricuspid and mitral insufficiency were completely repaired by a surgical operation. Fortunately, these injuries were not fatal in this case, but the comprehensive assessment of cardiac damage and careful observation are important for managing patients with cardiac injury...
January 11, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29318954/contribution-of-limbs-actions-to-the-four-competitive-swimming-strokes-a-nonlinear-approach
#8
Raul F Bartolomeu, Mário J Costa, Tiago M Barbosa
The aim of our study was to assess the effect of the limbs' actions on the nonlinear properties of the four competitive swimming strokes. Forty-nine swimmers performed all-out sprints at front-crawl, backstroke, breaststroke and butterfly, each one at full stroke (FS), only the arms' stroke (AS), and only leg kicking (LK), in a total of 12 bouts, 6 per day. A speedo-meter cable was attached to the swimmer's hip, to collect the speed-time raw data (f = 50Hz). Velocity, speed fluctuation, sample entropy and fractal dimension were derived from the speed-time series...
January 10, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29295017/client-violence-against-youth-care-workers-findings-of-an-exploratory-study-of-workforce-issues-in-residential-treatment
#9
Yvonne Smith, Lex Colletta, Anna E Bender
Residential treatment centers (RTCs) for youth are plagued by high turnover of youth care workers who provide round-the-clock treatment and supervision to youth with severe affective and behavioral problems. This article presents findings from a 15-month ethnographic study of workforce issues in one RTC related to youth care workers' exposure to client violence (CV). Findings are based on 65 semistructured interviews and 490 hours of participant observation with consenting employees. Participants reported CV incidents, including punching, kicking, biting, hair pulling, choking, threats or assaults with a weapon, and other physical and sexualized violence...
December 1, 2017: Journal of Interpersonal Violence
https://www.readbyqxmd.com/read/29288628/mating-behavior-of-the-west-nile-virus-vector-culex-pipiens-role-of-behavioral-asymmetries
#10
Giovanni Benelli
Culex pipiens is a vector of West Nile, Rift Valley fever, Japanese encephalitis virus and Usutu viruses. In agreement with the criteria of Integrated Vector Management, several research efforts have been devoted to develop behavior-based control tools to fight mosquito vectors. However, our knowledge of mosquito mating biology and sexual communication is still patchy. Despite the high relevance of C. pipiens as a vector of medical and veterinary importance, no studies on its mating behavior and the factors routing mating success have been conducted...
December 27, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29287635/maternal-perception-of-fetal-movements-in-the-third-trimester-a-qualitative-description
#11
Billie Bradford, Robyn Maude
PROBLEM: Decreased fetal movements is a common reason for unscheduled antenatal assessment and is associated with adverse pregnancy outcome. BACKGROUND: Fetal movement counting has not been proven to reduce stillbirths in high-quality studies. AIMS: The aim was to explore a qualitative account of fetal movements in the third trimester as perceived by pregnant women themselves. METHODS: Using qualitative descriptive methodology, interviews were conducted with 19 women experiencing an uncomplicated first pregnancy, at two timepoints in their third trimester...
December 26, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/29287067/how-to-determine-leg-dominance-the-agreement-between-self-reported-and-observed-performance-in-healthy-adults
#12
Nicky van Melick, Bart M Meddeler, Thomas J Hoogeboom, Maria W G Nijhuis-van der Sanden, Robert E H van Cingel
CONTEXT: Since decades leg dominance is suggested to be important in rehabilitation and return to play in athletes with anterior cruciate ligament injuries. However, an ideal method to determine leg dominance in relation to task performance is still lacking. OBJECTIVE: To test the agreement between self-reported and observed leg dominance in bilateral mobilizing and unilateral stabilizing tasks, and to assess whether the dominant leg switches between bilateral mobilizing tasks and unilateral stabilizing tasks...
2017: PloS One
https://www.readbyqxmd.com/read/29283052/thrombolytic-therapy-in-the-current-era-myocardial-infarction-and-beyond
#13
Patrick Proctor, Massoud A Leesar, Arka Chatterjee
Thrombolytic therapy kick-started the era of modern cardiology but in the last few decades it has been largely supplanted by primary percutaneous coronary intervention (PCI) as the go-to treatment for acute myocardial infarction. However, these agents remain important for vast populations without access to primary PCI and acute ischemic stroke. More innovative uses have recently come up for the treatment of a variety of conditions. This article summarizes the history, evidence base and current use of thrombolytics in cardiovascular disease...
December 27, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29243038/what-performance-analysts-need-to-know-about-research-trends-in-association-football-2012-2016-a-systematic-review
#14
REVIEW
Hugo Sarmento, Filipe Manuel Clemente, Duarte Araújo, Keith Davids, Allistair McRobert, António Figueiredo
BACKGROUND: Evolving patterns of match analysis research need to be systematically reviewed regularly since this area of work is burgeoning rapidly and studies can offer new insights to performance analysts if theoretically and coherently organized. OBJECTIVE: The purpose of this paper was to conduct a systematic review of published articles on match analysis in adult male football, identify and organize common research topics, and synthesize the emerging patterns of work between 2012 and 2016, according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines...
December 14, 2017: Sports Medicine
https://www.readbyqxmd.com/read/29239047/does-the-amount-of-lower-extremity-movement-variability-differ-between-injured-and-uninjured-populations-a-systematic-review
#15
REVIEW
Samuel R Baida, Shane J Gore, Andrew D Franklyn-Miller, Kieran A Moran
Movement variability during repetitive performance of a dynamic activity (e.g. running, jumping, kicking) is considered an integral characteristic of optimal movement execution, however, it's relationship with musculoskeletal injury is not known. The primary aim of this paper was to review published comparison trials to determine if movement variability differs between uninjured controls and subjects with a lower limb musculoskeletal injury. A systematic search of online databases; Medline, Sports Discus, Scopus and Web of Science was conducted from July to November 2016...
December 14, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29238258/do-red-and-blue-uniforms-matter-in-football-and-handball-penalties
#16
Bjoern Krenn, Niklas Pernhaupt, Markus Handsteiner
Past research has revealed ambiguous results on the impact of red uniforms in sports competition. The current study was aimed at analyzing the role of red and blue uniforms in football and handball penalties. Two experiments were conducted using a within subjects design, where participants rated uniform color-manipulated video clips. In the first study, participants (n = 39) watched footage of football players kicking a penalty, whereas in the second study (n = 118) videos of handball penalty takers, handball goalkeepers and football goalkeepers preparing themselves to score/save a penalty were shown...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29235424/fundamental-movement-skills-of-children-living-in-england-the-role-of-ethnicity-and-native-english-language
#17
Emma L J Eyre, Leanne Jaye Walker, Michael J Duncan
The development of fundamental movement skills (FMS) has been associated with children's general health, and, while there is evidence to suggest that age, gender, physical activity, and socioeconomic status relate to FMS, the relationship of ethnicity and language barriers to FMS competence has been underexplored. These factors may be of particular interest for South Asian (SA) children who have lower physical activity and increased risk of metabolic disease. This cross-sectional study examined ethnic and language differences in FMS among 218 ethnically diverse five-year-old children (61 White ethnic background, 91 SA, 29 Black ethnic background, and 37 other), some with English as a native language ( n = 90) and some with English as an additional language ( n = 75), all recruited from within central England...
January 1, 2017: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29234662/surgical-treatment-of-rectus-femoris-injury-in-soccer-playing-athletes-report-of-two-cases
#18
Leandro Girardi Shimba, Gabriel Carmona Latorre, Alberto de Castro Pochini, Diego Costa Astur, Carlos Vicente Andreoli
Muscle injury is the most common injury during sport practice. It represents 31% of all lesions in soccer, 16% in track and field, 10.4% in rugby, 17.7% in basketball, and between 22% and 46% in American football. The cicatrization with the formation of fibrotic tissue can compromise the muscle function, resulting in a challenging problem for orthopedics. Although conservative treatment presents adequate functional results in the majority of the athletes who have muscle injury, the consequences of treatment failure can be dramatic, possibly compromising the return to sport practice...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29234560/collegiate-male-soccer-players-exhibit-between-limb-symmetry-in-body-composition-muscle-strength-and-range-of-motion
#19
Matthew D DeLang, Melodie Kondratek, Lorenzo J DiPace, Tamara Hew-Butler
Background: Functional and structural asymmetries attributed to limb dominance are equivocal in soccer players. Previous authors hypothesize the existence of between-limb asymmetry secondary to the repetitive unilateral nature of kicking. However, symmetry is often present, particularly in measures of muscle strength. Purpose: The purpose of the present study was to determine if lateral dominance is accompanied by corresponding between-limb asymmetries in a comprehensive assessment of body composition, muscle strength, and range of motion in healthy soccer players...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29221527/social-experiences-of-women-with-obstetric-fistula-seeking-treatment-in-kampala-uganda
#20
Marielle Meurice, Rene Genadry, Carol Heimer, Galya Ruffer, Barageine Justus Kafunjo
BACKGROUND: Obstetric fistula is a preventable and treatable condition predominately affecting women in low-income countries. Understanding the social context of obstetric fistula may lead to improved prevention and treatment. OBJECTIVES: This study investigated social experiences of women with obstetric fistula seeking treatment at Mulago Hospital in Kampala, Uganda. METHODS: A descriptive study was conducted among women seeking treatment for obstetric fistula during a surgical camp in July 2011 using a structured questionnaire...
May 2017: Annals of Global Health
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