HEAD IMPACT MONITORING: WHAT NEW METHODOLOGIES COULD DO FOR CONCUSSION BIOMECHANICS

Concussion has become a world-wide concern for sports participants. In-vivo head impacts monitoring has long been proposed as a way of identifying and even helping to prevent concussions. Several head impact devices were developed to measure head kinematics on the field, allowing the study of a wide range of sports. However, after fifteen years of data collection and despite a better understanding of injury mechanisms, concussion biomechanics still presents numerous challenges. This study aimed to summarize current knowledge of head impact monitoring via narrative and systematic reviews. The discussion was focused on how technology might have limited previous research, and how innovative analyses approaches might provide new opportunities to further our appreciation of concussion biomechanics

Summer and Winter Spatial Habitat Use by the Lake Erie Watersnake

In an effort to provide information to guide habitat management for the Lake Erie watersnake Nerodia sipedon insularum, a federally threatened and Ohio state endangered species, we used radiotelemetry to obtain spatial habitat data for adult snakes during the summer active season and during winter hibernation. During the summer active season, terrestrial habitat use was limited to a narrow band of shoreline. Among individuals, maximum distance inland from shore ranged from 1 to 50 m (mean = 8 m) and linear extent of shoreline ranged from 30 to 1,360 m (mean = 261 m). Winter hibernation occurred at varying distances inland with individual hibernation sites ranging from 1 to 580 m (mean = 29 m) from shore. Habitat use did not differ between males and females. Existing U.S. Fish and Wildlife Service habitat management guidelines suggest that ground-disturbing activities within potential hibernation areas (defined as terrestrial habitat within 161 m of shore) should be avoided in winter to prevent harm to hibernating snakes. They suggest further that excavation and removal of shrubs, standing or downed trees, root masses, animal burrows, piled rocks, cliffs, or bedrock within 21 m of shore should be avoided in summer to prevent harm to active snakes. Given that Lake Erie watersnakes have recovered to the point where delisting is being proposed, these habitat guidelines appear to be sufficient. However, maintaining voluntary compliance with habitat guidelines and meeting the need for continued public outreach will be vital to ensure long-term persistence

The Role of Art in the Patient Experience: An Evaluation of Art from the Heart at UVM Medical Center

Introduction: The World Health Organization defines health as a state of total physical, mental and social well-being, not just the absence of disease or fragility. Making art in medical settings reduces pain, tiredness, emotional distress and other feelings that negatively affect well-being, while enhancing positive emotions and communication. According to the 2009 “State of the Field Report” by the Society for the Arts in Healthcare, 43-45% of healthcare institutions reported having some form of an art program. Art from the Heart (AFTH) is a program of Burlington City Arts in collaboration with the University of Vermont Medical Center. With the aid of volunteers, AFTH offers pediatric patients and their families the opportunity for a more normalized experience by providing them with time and materials to experience the joys of creativity and imagination. Waiting areas, in-patient hospital rooms, exam rooms and chemotherapy infusion bays become temporary art studios. The purpose of our public health project was to evaluate the presence and impact of AFTH in three pediatric points of care at UVM Medical Center.https://scholarworks.uvm.edu/comphp_gallery/1204/thumbnail.jp

Evaluation Framework for Water Quality Trading Programs in the Chesapeake Bay Watershed

Water quality trading programs are being proposed and implemented across the US in a variety of forms and with differing objectives. The programs being proposed and implemented in the Chesapeake Bay region are no exception. Against this background the Chesapeake Bay Program's Scientific and Technical Advisory Committee and the Mid-Atlantic Water Program requested a general framework to inform and guide the evaluation of the performance trading programs. This resulting report was developed by a workgroup comprised of ten individuals with extensive experience in the study, design, and evaluation of trading programs. While the impetus for this report was to improve evaluation of trading programs in the Chesapeake Bay region, the evaluation framework is broad enough to apply to trading programs in general

TRAINING LOAD PRIOR TO INJURY IN PROFESSIONAL RUGBY LEAGUE PLAYERS: ANALYSING INJURY RISK WITH MACHINE LEARNING

This study explores the application of Global Positioning System tracking data from field training sessions and supervised machine learning algorithms for predicting injury risk of players across a single National Rugby League season. Previous work across a range of sporting codes has demonstrated associations between training loads and increased incidence of injury in professional athletes. Most of the work conducted has applied a reductionist approach, identifying training load characteristics as risk factors using generalised models to show population trends. This study demonstrates promising results by applying processing techniques and machine learning algorithms to analyse the injury risk associated with complex training load patterns. The accuracy of the algorithms are investigated along with the importance of training load predictors and data window sizes

The Influence of Head Impact Threshold for Reporting Data in Contact and Collision Sports: Systematic Review and Original Data Analysis

- Background - Head impacts and resulting head accelerations cause concussive injuries. There is no standard for reporting head impact data in sports to enable comparison between studies. - Objective - The aim was to outline methods for reporting head impact acceleration data in sport and the effect of the acceleration thresholds on the number of impacts reported. - Methods - A systematic review of accelerometer systems utilised to report head impact data in sport was conducted. The effect of using different thresholds on a set of impact data from 38 amateur senior rugby players in New Zealand over a competition season was calculated. - Results - Of the 52 studies identified, 42 % reported impacts using a >10-g threshold, where g is the acceleration of gravity. Studies reported descriptive statistics as mean ± standard deviation, median, 25th to 75th interquartile range, and 95th percentile. Application of the varied impact thresholds to the New Zealand data set resulted in 20,687 impacts of >10 g, 11,459 (45 % less) impacts of >15 g, and 4024 (81 % less) impacts of >30 g. Discussion Linear and angular raw data were most frequently reported. Metrics combining raw data may be more useful; however, validity of the metrics has not been adequately addressed for sport. Differing data collection methods and descriptive statistics for reporting head impacts in sports limit inter-study comparisons. Consensus on data analysis methods for sports impact assessment is needed, including thresholds. Based on the available data, the 10-g threshold is the most commonly reported impact threshold and should be reported as the median with 25th and 75th interquartile ranges as the data are non-normally distributed. Validation studies are required to determine the best threshold and metrics for impact acceleration data collection in sport. Conclusion Until in-field validation studies are completed, it is recommended that head impact data should be reported as median and interquartile ranges using the 10-g impact threshold

Effect of injection tool on incidence of head and neck abscesses at slaughter

Objective: To test the effect of injection device (conventional syringe and needle versus needle-free injection device [NFID]) on the incidence of head and neck abscesses at slaughter. Materials and methods: Pigs raised under antibiotic-free (ABF) conditions (n=3424) were vaccinated first with combined Mycoflex and Circoflex (Boehringer Ingelheim Vetmedica Inc, St Joseph, Missouri) and second with ER Bac Plus (Pfizer Inc, Pfizer Animal Health, New York, New York), each via either conventional syringe and needle (Needle) or NFID. The first vaccination was given on the right side of the neck 1 day post weaning and the second on the left side of the neck 70 days post weaning. Four treatment groups were based on the vaccination injection methods: Needle-Needle; Needle-NFID; NFID-Needle; and NFID-NFID. Results: At slaughter, 3134 carcasses were evaluated for head and neck abscesses. The incidence of abscesses among the treatment groups did not differ (P\u3e.05). More abscesses occurred on the right side of the neck (0.45%; P\u3c.05) than on the left (0.13%). Overall abscess incidence (0.57%) was less than that typically observed in similarly sourced ABF pigs (2.51%) produced under field conditions and harvested at the same processing facility. Implications: Under the conditions of this study, incidence of head and neck abscesses at slaughter does not differ by injection device. Lower abscess incidence in study pigs than in ABF pigs under field conditions may be attributed to picking up small pigs for vaccination, frequent changing of needles, and not hurrying the vaccination process

Study protocol: Home-based physical rehabilitation for survivors of a critical illness [ACTRN12605000166673]

INTRODUCTION: Numerous primary studies and several review papers have highlighted delayed physical and psychological recovery for survivors of critical illness, often beyond 6 months after discharge. This randomized controlled trial with blinded assessment aims to test the effects of an 8-week, home-based, individually tailored physical rehabilitation programme on physical and psychological recovery for survivors of a critical illness after discharge from hospital. METHOD: Participants are survivors of a critical illness discharged from nine intensive care units (ICUs) in Australia, who are aged 18 years or older, in an ICU longer than 48 hours, discharged home to self-care or carer (non-institutional care), able to participate in physical rehabilitation, and within the hospitals' local geographical areas for home visits. The study is based in participants' home environments. Blinded assessments at weeks 1, 8 and 26 after hospital discharge examine physical functioning, exercise capacity, health-related quality of life and psychological well being. The intervention is graded, individualized endurance and strength training prescribed by a pulmonary rehabilitation physiotherapist over an 8-week period, with three home visits, five follow-up phone calls, and a printed exercise manual supporting the training. Initial focus is on lower limb exercises and walking, with warm-up stretches, and progresses to the addition of core stabilization and upper limb exercises. RESULTS: The burden of a critical illness is well documented. This novel study will determine whether a home-based physical rehabilitation programme improves the recovery trajectory for survivors of critical illness. The projected sample size of 200 patients aims to detect a clinically important 10% improvement in physical functioning. The study will also examine whether other important physical and psychological measures are improved. CONCLUSION: This multicentre, randomized controlled trial will examine outcomes that are meaningful to patients, their family and society, namely functional ability and well being. The study will also target a health problem that is likely to increase as the population ages. If the programme is effective, it will provide a model that can be easily adapted and adopted by existing primary care or community services to improve the recovery of individuals following critical illness

A regionally resolved inventory of High Mountain Asia surge-type glaciers, derived from a multi-factor remote sensing approach

This study was supported by the Strategic Priority Research Programs of the Chinese Academy of Sciences (grant nos. XDA20100300 and XDA19070202) and the Swiss National Science Foundation (200021E_177652/1) within the framework of the DFG Research Unit GlobalCDA (FOR2630).Knowledge about the occurrence and characteristics of surge-type glaciers is crucial due to the impact of surging on glacier melt and glacier-related hazards. One of the super-clusters of surge-type glaciers is High Mountain Asia (HMA). However, no consistent region-wide inventory of surge-type glaciers in HMA exists. We present a regionally resolved inventory of surge-type glaciers based on their behaviour across High Mountain Asia between 2000 and 2018. We identify surge-type behaviour from surface velocity, elevation and feature change patterns using a multi-factor remote sensing approach that combines yearly ITS_LIVE velocity data, DEM differences and very-high-resolution imagery (Bing Maps, Google Earth). Out of the ≈95000 glaciers in HMA, we identified 666 that show diagnostic surge-type glacier behaviour between 2000 and 2018, which are mainly found in the Karakoram (223) and the Pamir regions (223). The total area covered by the 666 surge-type glaciers represents 19.5% of the glacierized area in Randolph Glacier Inventory (RGI) V6.0 polygons in HMA. Only 68 glaciers were already identified as "surge type" in the RGI V6.0. We further validate 107 glaciers previously labelled as "probably surge type" and newly identify 491 glaciers, not previously reported in other inventories covering HMA. We finally discuss the possibility of self-organized criticality in glacier surges. Across all regions of HMA, the surge-affected area within glacier complexes displays a significant power law dependency with glacier length.Publisher PDFPeer reviewe