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Monish M Maharaj, Kevin Phan, Soumya Hariswamy, Prashanth J Rao
BACKGROUND: Surfers myelopathy can be a rapidly devastating disease and little is known surrounding the pathophysiology of the condition. Although the classical pattern of illness has been well reported, it has never been observed in a non-surfing setting. METHODS: A 51-year-old demolition worker presented with acute non-traumatic myelopathy. Clinical examination revealed sensory loss to the level of L2. T2-MRI and MRI-DWI revealed a hyperintense signal suggestive of an ischaemic event...
September 2016: J Spine Surg
Jimmy Garnier, Mark A Lewis
Range expansion and range shifts are crucial population responses to climate change. Genetic consequences are not well understood but are clearly coupled to ecological dynamics that, in turn, are driven by shifting climate conditions. We model a population with a deterministic reaction-diffusion model coupled to a heterogeneous environment that develops in time due to climate change. We decompose the resulting travelling wave solution into neutral genetic components to analyse the spatio-temporal dynamics of its genetic structure...
October 14, 2016: Bulletin of Mathematical Biology
Steven G Morgan, Alan L Shanks, Atsushi G Fujimura, Ad J H M Reniers, Jamie MacMahan, Chris D Griesemer, Marley Jarvis, Jenna Brown
Larvae of intertidal species develop at sea and must return to adult habitats to replenish populations. Similarly, nutrients, detritus and plankton provide important subsidies spurring growth and reproduction of macroalgae and filter-feeding invertebrates that form the foundation of intertidal communities. Together, these factors determine the density and intensity of interactions among community members. We hypothesized that spatial variation in surfzone hydrodynamics affects the delivery of plankton subsidies...
October 12, 2016: Proceedings. Biological Sciences
Arjun K Bhargava, Paul W Rothlauf, Claude Krummenacher
Herpes simplex virus (HSV) uses the cell adhesion molecule nectin-1 as a receptor to enter neurons and epithelial cells. The viral glycoprotein D (gD) is used as a non-canonical ligand for nectin-1. The gD binding site on nectin-1 overlaps with a functional adhesive site involved in nectin-nectin homophilic trans-interaction. Consequently, when nectin-1 is engaged with a cellular ligand at cell junctions, the gD binding site is occupied. Here we report that HSV gD is able to disrupt intercellular homophilic trans-interaction of nectin-1 and induce a rapid redistribution of nectin-1 from cell junctions...
October 7, 2016: Virology
Hüseyin Ulaş Pınar, Omer Karaca, Rafi Doğan, Ümmü Mine Konuk
BACKGROUND: Smartphones are used in many areas of anesthesia practice. However, recent editorial articles have expressed concerns about smartphone uses in the operating room for non-medical purposes. We performed a survey to learn about the smartphone use habits and views of Turkish anesthesia providers. METHODS: A questionnaire consisting of 14 questions about smartphone use habits during anesthesia care was sent anesthesia providers. RESULTS: In November-December 2015, a total of 955 participants answered our survey with 93...
October 6, 2016: BMC Anesthesiology
Diana Fusco, Matti Gralka, Jona Kayser, Alex Anderson, Oskar Hallatschek
The genetic diversity of growing cellular populations, such as biofilms, solid tumours or developing embryos, is thought to be dominated by rare, exceptionally large mutant clones. Yet, the emergence of these mutational jackpot events is only understood in well-mixed populations, where they stem from mutations that arise during the first few cell divisions. To study jackpot events in spatially structured populations, we track mutant clones in microbial populations using fluorescence microscopy and population sequencing...
October 3, 2016: Nature Communications
Joshua P Halfpap, Aaron A Cho, Michael D Rosenthal
A 51-year-old man presented to a direct-access physical therapy clinic with persistent neck pain for 5 days after a fall in shallow water while surfing. Based on "dangerous mechanism of injury" from the Canadian cervical spine rule as being a high risk factor, the physical therapist ordered radiographs of the cervical spine, which were suggestive of a more serious injury. Computed tomography suggested and magnetic resonance imaging confirmed vertebral artery dissection. J Orthop Sports Phys Ther 2016;46(10):929...
October 2016: Journal of Orthopaedic and Sports Physical Therapy
David X Cifu, Olivia K Uchima, Alaina S Davis, Amy E Lower, Jingyu L Jin, Henry L Lew
Head injuries are a particular concern in Hawai'i given the large military population, the presence of many land and water sports such as football and surfing, and the lenient helmet laws for motorcycle and bicycle riders. Physical, psychological, and cognitive symptoms from single or repeated concussions can affect an individual's reentry to society and activity. Current literature indicates that repeated head injuries are associated with chronic traumatic encephalopathy (CTE) which is thought to lead to dementia...
September 2016: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
Sofiane Mnadla, Nicola Luigi Bragazzi, Mehdi Rouissi, Anis Chaalali, Anna Siri, Johnny Padulo, Luca Paolo Ardigò, Francesco Brigo, Karim Chamari, Beat Knechtle
This article reports data concerning the Internet-related activities and interest for Ironman Triathlon competition. Google Trends (GT) was used and mined from 2004 onwards. The interest for Ironman Triathlon was found to be cyclic over time. The Triathlon-related Internet activities negatively correlated with the number of finishers per year (Pearson׳s correlation r=-0.690, p-value<0.05), while an increasing participation of female athletes who were less likely to surf the Internet could be noticed (r=-0...
December 2016: Data in Brief
Pablo Perel
No abstract text is available yet for this article.
August 16, 2016: European Journal of Preventive Cardiology
Christine L LaLanne, Michael S Cannady, Joseph F Moon, Danica L Taylor, Jeff A Nessler, George H Crocker, Sean C Newcomer
Participation in surfing has evolved to include all age groups. Therefore, the purpose of this study was to determine whether activity levels and cardiovascular responses to surfing change with age. Surfing time and heart rate (HR) were measured for the total surfing session and within each activity of surfing (paddling, sitting, wave-riding and miscellaneous). Peak oxygen consumption (VO2peak) was also measured during a laboratory-based simulated surfboard paddling on a modified swim bench ergometer. VO2peak decreased with age during simulated paddling (r=-0...
September 6, 2016: Journal of Aging and Physical Activity
James Furness, Wayne Hing, Jeremy M Sheppard, Sean Newcomer, Ben Schram, Mike Climstein
Surfing consists of both high and low intensity paddling of varying durations, utilizing both the aerobic and anaerobic systems. Surf specific physiological studies lack adequate group sample sizes and VO2peak values are yet to determine differences between competitive and recreational surfers. The purpose of this study was therefore to provide a comprehensive physiological profile of both recreational and competitive surfers. This multi-site study involved 62 male surfers, recreational (n = 47) and competitive (n = 15)...
August 31, 2016: Journal of Strength and Conditioning Research
Attila Körmendi, Zita Brutóczki, Bianka Petra Végh, Rita Székely
Background and aims The use of mobile phones has become an integral part of everyday life. Young people in particular can be observed using their smartphones constantly, and they not only make or receive calls but also use different applications or just tap touch screens for several minutes at a time. The opportunities provided by smartphones are attractive, and the cumulative time of using smartphones per day is very high for many people, so the question arises whether we can really speak of a mobile phone addiction? In this study, our aim is to describe and analyze a possible case of smartphone addiction...
September 2016: Journal of Behavioral Addictions
Mujtaba Nassiri, Osama Mohamed, Arvids Berzins, Yasser Aljabi, Talat Mahmood, Shojaeddin Chenouri, Paul O'Grady
BACKGROUND: Patients seeking information and advice on treatment of scaphoid fractures unknowingly confront longstanding medical controversies surrounding the management of this condition. However, there are no studies specifically looking into the quality and reliability of online information on scaphoid fractures. METHODS: We identified 44 unique websites for evaluation using the term "scaphoid fractures". The websites were categorized by type and assessed using the DISCERN score, the Journal of the American Medical Association (JAMA) benchmark criteria and the Health on the net (HON) code...
October 2016: J Hand Surg Asian Pac Vol
Luke J McManus, Andrew Thomson, Andrew Whan
Athletes are at increased risk of developing soft-tissue lesions of the lower limbs. Although the majority of these will be benign, the differential diagnosis is broad and increasingly, doctors are turning to magnetic resonance imaging (MRI) as a first-line investigation when presented with these sorts of lesions, both to narrow the differential diagnosis and exclude malignancy. We report the case of a 28-year-old Caucasian man who presented with 2 soft-tissue lesions of the right foot. History and examination of the nodules fitted with a diagnosis of surfers' knots, an unusual form of acquired, benign, connective tissue nodule that may appear over the tibial tuberosities, dorsum of the feet, and occasionally on the chest of surfers in association with repetitive microtrauma during surfing...
September 2016: Radiology case reports
S Baggio, M Mohler-Kuo, M Dupuis, Y Henchoz, J Studer, A A N'Goran, G Gmel
BACKGROUND: Social capital is described as a protective factor against youth substance use, but it may also be associated with behaviours that do not enhance health. The present study hypothesized that 'substance use capital', i.e. resources favourable to substance use, is a risk factor for substance use and misuse. METHODS: We used baseline data from the ongoing Cohort Study on Substance Use Risk Factors (C-SURF) that included a representative sample of young Swiss men (n=5623)...
September 2016: Revue D'épidémiologie et de Santé Publique
Stephan Peischl, Isabelle Dupanloup, Lars Bosshard, Laurent Excoffier
Genetic surfing describes the spatial spread and increase in frequency of variants that are not lost by genetic drift and serial migrant sampling during a range expansion. Genetic surfing does not modify the total number of derived alleles in a population or in an individual genome, but it leads to a loss of heterozygosity along the expansion axis, implying that derived alleles are more often in homozygous state. Genetic surfing also affects selected variants on the wave front, making them behave almost like neutral variants during the expansion...
August 29, 2016: Current Opinion in Genetics & Development
Emriye Hilal Yayan, Duygu Arikan, Fatma Saban, Nazan Gürarslan Baş, Özlem Özel Özcan
This was a descriptive and cross-sectional study conducted with adolescents to examine the correlation between Internet addiction and social phobia. The population of the study consisted of 24,260 students aged between 11 and 15 years. Sampling method was used from population with known number, and 1,450 students were calculated as sample of the study. In this study, 13.7% of the adolescents had an Internet addiction, and 4.2% spent more than 5 hr on the computer every day. There was a positive correlation between Internet addiction and social phobia...
August 25, 2016: Western Journal of Nursing Research
Shahab Ensafi, Shijian Lu, Ashraf A Kassim, Chew Lim Tan
Autoimmune diseases (AD) are the abnormal response of the immune system of the body to healthy tissues. ADs have generally been on the increase. Efficient computer aided diagnosis of ADs through classification of the human epithelial type 2 (HEp-2) cells become beneficial. These methods make lower diagnosis costs, faster response and better diagnosis repeatability. In this paper, we present an automated HEp-2 cell image classification technique that exploits the sparse coding of the visual features together with the Bag of Words model (SBoW)...
August 8, 2016: Computerized Medical Imaging and Graphics: the Official Journal of the Computerized Medical Imaging Society
Min Sun, Ali Farhadi, Tseng-Hung Chen, Steven Seitz
We present a fully automatic system for ranking domain-specific highlights in unconstrained personal videos by analyzing online edited videos. A novel latent linear ranking model is proposed to handle noisy training data harvested online. Specifically, given a targeted domain such as "surfing", our system mines the YouTube database to find pairs of raw and their corresponding edited videos. Leveraging the assumption that an edited video is more likely to contain highlights than the trimmed parts of the raw video, we obtain pair-wise ranking constraints to train our model...
August 17, 2016: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
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