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Weihong Yuan, Jonathan Dudley, Kim D Barber Foss, Jonathan D Ellis, Staci Thomas, Ryan T Galloway, Christopher A DiCesare, James L Leach, Janet Adams, Thomas Maloney, Brooke Gadd, David Smith, Jeff N Epstein, Dustin R Grooms, Kelsey Logan, David R Howell, Mekibib Altaye, Gregory D Myer
Recent neuroimaging studies have suggested that repetitive subconcussive head impacts, even after only one sport season, may lead to pre- to post-season structural and functional alterations in male high school football athletes. However, data on female athletes are limited. In the current investigation, we aimed to (1) assess the longitudinal pre- to post-season changes in functional MRI (fMRI) of working memory and working memory performance, (2) quantify the association between the pre- to post-season change in fMRI of working memory and the exposure to head impact and working memory performance, and (3) assess whether wearing a neck collar designed to reduce intracranial slosh via mild compression of the jugular veins can ameliorate the changes in fMRI brain activation observed in the female high school athletes who did not wear collars after a full soccer season...
June 1, 2018: Journal of Neurotrauma
E Zacharewicz, M K C Hesselink, P Schrauwen
The incidence of obesity and metabolic disease, such as type 2 diabetes mellitus (T2D), is rising globally. Dietary lipid over supply leads to lipid accumulation at ectopic sites, such as skeletal muscle. Ectopic lipid storage is highly correlated with insulin resistance and T2D, likely due to a loss of metabolic flexibility - the capacity to switch between fat and glucose oxidation upon insulin stimulation - and cellular dysfunction because of lipotoxicity. However, muscle lipid levels are also elevated in endurance-trained athletes, presenting a paradoxical phenotype of increased intramuscular lipids along with high insulin sensitivity - the 'athletes' paradox'...
January 13, 2018: Journal of Internal Medicine
Mehtap Kara, Eren Ozcagli, Persefoni Fragkiadaki, Tugba Kotil, Polychronis D Stivaktakis, Demetrios A Spandidos, Aristides M Tsatsakis, Buket Alpertunga
Anabolic androgenic steroids (AAS) are performance-enhancing drugs commonly abused by atheletes. Stanozolol is a synthetic testosterone-derived anabolic steroid. Although it is well known that AAS have several side-effects, there are only few toxicological studies available on the toxic effects and mechanisms of action of stanozolol. The aim of this study was to investigate the genotoxic effects of stanozolol and to determine its effects on telomerase activity in Sprague-Dawley male rats. For this purpose, 34 male rats were divided into 5 groups as follows: i) the control group (n=5); ii) the propylene glycol (PG)-treated group (n=5); iii) the stanozolol-treated group (n=8); iv) the PG-treated group subjected to exercise (n=8); and v) the stanozolol-treated group subjected to exercise (n=8)...
February 2017: Experimental and Therapeutic Medicine
Tao Sun, Ying Wu, Xueping Wu, Haifeng Ma
BACKGROUND: The aim of this study was to identify possible biological pathways of the metabolite profile changes in athletes' urine samples before and after 800-m runs. METHODS: We used an NMR-based metabolomics analysis to evaluate the metabolite profile changes in 19 young male athletes' urine samples after 800-m runs and provide an overall picture of its impact. Various multivariate data analysis methods, including principal component analysis (PCA), partial least squares-discrimination analysis (PLS-DA), and orthogonal projection of latent-structure-discrimination analysis (OPLS-DA) were applied to analyze the NMR data and thus identify possible correlations between the metabolite profile changes and the alterations in biological pathways...
June 2017: Journal of Sports Medicine and Physical Fitness
Ki Won Jin, Hyun Sun Jeon, Joon Young Hyon, Won Rynag Wee, Wool Suh, Young Joo Shin
BACKGROUND: Fungal keratitis is difficult to treat that can result in corneal blindness requiring penetrating keratoplasty and in fungal endothalmitis. We report a case of fungal keratitis and onychomycosis simultaneously infected by Trichophyton. CASE PRESENTATION: A 77-year old male presented with ocular pain, conjunctival injection, and severe loss of vision in his left eye. His best corrected visual acuity was hand movements in the left eye, and slit-lamp examination showed a corneal ulcer with feathery margin and hypopyon...
2014: BMC Ophthalmology
Marimuthu Citartan, Subash C B Gopinath, Junji Tominaga, Yeng Chen, Thean-Hock Tang
Label-free-based detection is pivotal for real-time monitoring of biomolecular interactions and to eliminate the need for labeling with tags that can occupy important binding sites of biomolecules. One simplest form of label-free-based detection is ultraviolet-visible-near-infrared (UV-vis-NIR) spectroscopy, which measure changes in reflectivity as a means to monitor immobilization and interaction of biomolecules with their corresponding partners. In biosensor development, the platform used for the biomolecular interaction should be suitable for different molecular recognition elements...
August 2014: Talanta
Roland Leser, Armin Schleindlhuber, Keith Lyons, Arnold Baca
The main aim of this study was to determine the accuracy of the ultra-wideband (UWB)-based positioning system Ubisense, which is used for time-motion analysis in sports. Furthermore, some alternatives for positioning the system's transponders on the atheletes, as well as the accuracy depending on the location of measurement, were tested. Therefore, in a pre-study, some basic issues were examined (measurement assumptions and consistency and location of the system's transponder used for position detection), and position measurements at the borders and in the centre of a basketball field were performed...
2014: European Journal of Sport Science
Matthew I Black, Jacob Durant, Andrew M Jones, Anni Vanhatalo
It has been shown that the critical power (CP) in cycling estimated using a novel 3-min all-out protocol is reliable and closely matches the CP derived from conventional procedures. The purpose of this study was to assess the predictive validity of the all-out test CP estimate. We hypothesised that the all-out test CP would be significantly correlated with 16.1-km road time-trial (TT) performance and more strongly correlated with performance than the gas exchange threshold (GET), respiratory compensation point (RCP) and VO2 max...
2014: European Journal of Sport Science
Ekkehard Grünig, Philipp Henn, Antonello D'Andrea, Martin Claussen, Nicola Ehlken, Felicitas Maier, Robert Naeije, Christian Nagel, Felix Prange, Johannes Weidenhammer, Christine Fischer, Eduardo Bossone
BACKGROUND: Right atrial (RA) size is important in screening, diagnosis, and follow-up assessment in patients with pulmonary hypertension. The objective of this study was to define normal reference values for RA area by echocardiography in a large population of athletic versus sedentary healthy subjects. METHODS AND RESULTS: In the first part of the study, 880 healthy adult subjects (mean age, 28±6 years; 38% women; 395 top-level endurance athletes, 255 strength athletes, and 230 nonathletes) were prospectively assessed...
January 1, 2013: Circulation. Cardiovascular Imaging
B Schlatterer, S Jund, F Delépine, C Razafindratsiva, F de Peretti
PURPOSE OF THE STUDY: Comparisons have been often made between bone-tendon-bone plasty and hamstring tendon four-strand plasty. Whether a lateral tenodesis should be associated with the intra-articular reconstruction and the appropriate time between the accident and the repair remain two topics of debate. We present results obtained in a consecutive series of 50 pivoting sport atheletes reviewed retrospectively. These patients had been treated within eight days of trauma with a modified MacIntosh technique using an iliotibial band...
December 2006: Revue de Chirurgie Orthopédique et Réparatrice de L'appareil Moteur
M H Baums, E Kahl, W Schultz, H-M Klinger
Anterior impingement syndrome is a generally accepted diagnosis for a condition characterized by anterior ankle pain with limited and painful dorsiflexion. The cause can be either soft tissue or bony obstruction. We reviewed 26 (16 male and 10 female) athletes with a mean age of 27 years treated arthroscopically for symptoms due to soft-tissue (group I, n = 12) and bony obstruction (group II, n = 14). They suffered from anterior pain, reduction of dorsiflexion and recurrent swelling with severe impairment in their sports activities...
May 2006: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Teerawat Kulthanan, Sith Techakampuch, Natee Donphongam Bed
UNLABELLED: Footprint analysis is a simple, cost-effective and readily available method for evaluation of flat feet, to identify a person in forensic content and for shoe manufacturing. OBJECTIVE: To examine the footprints in athletes and non-athletes and to compare their foot print measurements. MATERIAL AND METHOD: Four hundred and ninety-two athletes and four hundred and thirty-one non-athletes were recruited. Their age range was eighteen to thirty five years...
July 2004: Journal of the Medical Association of Thailand
Daniela Sczesny
No abstract text is available yet for this article.
December 2003: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
No abstract text is available yet for this article.
October 15, 1959: Bollettino Della Società Italiana di Biologia Sperimentale
No abstract text is available yet for this article.
September 1962: [Bōei Eisei] Japanese Defense Forces Medical Journal
P Gao, L Xu, M Qing, J Tian, W Yu, S Lin
OBJECTIVES: To evaluate the effect of exercise to osteoporosis by bone mineral density (BMD) measurement of athelets comparing normal individuals in general population. METHODS: BMD of radium, lumber spine, and femoral neck were measured by single photon absorptiometry (SPA), quantitative CT (QCT), and dual X-ray absorptiometry (DXA) respectively in athletes (n = 162, male 79, female 83) and age matched non-athletes normal population (n = 204, male 91, female 113) in Beijing...
February 2000: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
T A M Karila, J E Karjalainen, M J Mäntysaari, M T Viitasalo, T A Seppälä
Power athletes abuse anabolic androgenic steroids (AASs) and growth hormone (GH) to gain their muscular mass and strength. We wanted to determine how massive, self-administered doses of AASs with or without GH affect the left ventricular (LV) dimensions in power athletes. These substances are assumed to increase LVmass mainly by thickening the ventricular walls. Anecdotal evidence suggests a higher risk of cardiovascular events in AAS abusers. We were interested to see if LV dimensions and function in AAS abusers would indicate this increased risk...
July 2003: International Journal of Sports Medicine
K M Smith, K J Kovacich-Smith, M Witt
Owing to the variability of injury, a mechanism of injury other than external rotation of the foot should not rule out a high ankle sprain. One must consider syndesmotic injury in the differential diagnosis of common ankle sprains and trauma. A high index of suspicion must lead the physician through clinical and radiographic examinations. Early and appropriate treatment of a high ankle sprain can greatly decrease a prolonged return to activity. Patients, especially competitive atheletes, must be educated regarding the morbidity of the condition...
July 2001: Clinics in Podiatric Medicine and Surgery
J Loehr, T Schwartz
Management theorists have long sought to identify precisely what makes some people flourish under pressure and others fold. But they have come up with only partial answers: rich material rewards, the right culture, management by objectives. The problem with most approaches is that they deal with people only from the neck up, connecting high performance primarily with cognitive capacity. Authors Loehr and Schwartz argue that a successful approach to sustained high performance must consider the person as a whole...
January 2001: Harvard Business Review
L Kanerva
A 21-year-old man developed painful hyperkeratotic, fissured, callosities on his knuckles ("knuckle pads") after having boxed for five evenings a week for six months. Boxer's knuckle pads are one type of traumatic skin injury regularly found in athletes, such as "jogger's toe", "athelete's nodule", "jog-ger's nipple", "runner's rump", "runner's bump", "rower's rump", "tennis toe", "skier 's shin", "surfer's nodule" "black heel", "black palm", "jazz ballet bottom" and "stria distensae". These types of traumatic skin injuries are briefly reviewed here...
July 1998: European Journal of Dermatology: EJD
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