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https://www.readbyqxmd.com/read/28975231/death-and-cardiac-arrest-in-u-s-triathlon-participants-1985-to-2016-a-case-series
#1
Kevin M Harris, Lawrence L Creswell, Tammy S Haas, Taylor Thomas, Monica Tung, Erin Isaacson, Ross F Garberich, Barry J Maron
Background: Reports of race-related triathlon fatalities have raised questions regarding athlete safety. Objective: To describe death and cardiac arrest among triathlon participants. Design: Case series. Setting: United States. Participants: Participants in U.S. triathlon races from 1985 to 2016. Measurements: Data on deaths and cardiac arrests were assembled from such sources as the U...
September 19, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28934321/identifying-the-factors-affecting-bike-sharing-usage-and-degree-of-satisfaction-in-ningbo-china
#2
Yanyong Guo, Jibiao Zhou, Yao Wu, Zhibin Li
The boom in bike-sharing is receiving growing attention as societies become more aware of the importance of active non-motorized traffic modes. However, the low usage of this transport mode in China raises concerns. The primary objective of this study is to explore factors affecting bike-sharing usage and satisfaction degree of bike-sharing among the bike-sharing user population in China. Data were collected by a questionnaire survey in Ningbo. A bivariate ordered probit (BOP) model was developed to examine simultaneously those factors associated with both bike-sharing usage and satisfaction degree of bike-sharing among users...
2017: PloS One
https://www.readbyqxmd.com/read/28923517/bicycle-helmet-use-patterns-in-italy-a-description-and-analysis-of-survey-data-from-an-italian-friends-of-cycling-association
#3
Ioana Popa, Ottavia E Ferraro, Chiara Orsi, Anna Morandi, Cristina Montomoli
Cycling is becoming one of the most popular forms of recreation and transport the world over, but cyclists still have a high level of vulnerability. A bicycle helmet is an important safety device available to cyclists, but little is known regarding possible determinants of helmet use among adults. This study aims at providing information on helmet usage patterns in Italy and identifying the factors associated with bicycle helmet use. Data on 2072 bicycle riders from an Italian friends of cycling association aged 18 years or older who had ridden a bicycle in the last month were collected using an ad-hoc questionnaire via the web...
November 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28882076/assessing-health-promotion-interventions-limitations-of-traditional-research-methods-in-community-based-studies
#4
Anne Dressel, Robert Schneider, Melissa DeNomie, Jennifer Kusch, Whitney Welch, Mirtha Sosa, Sally Yeldell, Tatiana Maida, Jessica Wineberg, Keith Holt, Rebecca Bernstein
Most low-income Americans fail to meet physical activity recommendations. Inactivity and poor diet contribute to obesity, a risk factor for multiple chronic diseases. Health promotion activities have the potential to improve health outcomes for low-income populations. Measuring the effectiveness of these activities, however, can be challenging in community settings. A "Biking for Health" study tested the impact of a bicycling intervention on overweight or obese low-income Latino and African American adults to reduce barriers to cycling and increase physical activity and fitness...
September 1, 2017: Health Promotion Practice
https://www.readbyqxmd.com/read/28879069/biking-practices-and-preferences-in-a-lower-income-primarily-minority-neighborhood-learning-what-residents-want
#5
Anne C Lusk, Albert Anastasio, Nicholas Shaffer, Juan Wu, Yanping Li
This paper examines if, in a lower-income minority neighborhood, bicycling practices and bicycle-environment preferences of Blacks and Hispanics were different from Whites. During the summer of 2014, surveys were mailed to 1537 households near a proposed cycle track on Malcolm X Boulevard in Roxbury, MA. On the Boulevard, intercept surveys were distributed to cyclists and observations noted about passing cyclist's characteristics. Data were analyzed from 252 returned-mailed surveys, 120 intercept surveys, and 709 bicyclists...
September 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28826652/orthopaedic-injuries-among-electric-bicycle-users
#6
Shay Tenenbaum, Daniel Weltsch, Jason T Bariteau, Adi Givon, Kobi Peleg, Ran Thein
INTRODUCTION: The use of electric bicycles (E-bike) has dramatically increased. E-bikes offer convenient, environmental-friendly, and less expensive alternative to other forms of transport. However, E-bikes provide a new public health challenge in terms of safety and injury prevention. This study is the first to specifically investigate the E-bike related orthopaedic injuries, based on a national trauma registry. METHODS: Data from a National Trauma Registry were reviewed for patients hospitalized following E-bike related injuries...
August 11, 2017: Injury
https://www.readbyqxmd.com/read/28820463/cycle-tracks-and-parking-environments-in-china-learning-from-college-students-at-peking-university
#7
Changzheng Yuan, Yangbo Sun, Jun Lv, Anne C Lusk
China has a historic system of wide cycle tracks, many of which are now encroached by cars, buses and bus stops. Even with these conditions, college students still bicycle. On campuses, students park their bikes on facilities ranging from kick-stand-plazas to caged sheds with racks, pumps and an attendant. In other countries, including Canada, some of the newer cycle tracks need to be wider to accommodate an increasing number of bicyclists. Other countries will also need to improve their bike parking, which includes garage-basement cages and two-tiered racks...
August 18, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28800368/unpredictability-does-not-hamper-nonretinotopic-motion-perception
#8
Marc M Lauffs, Haluk Ögmen, Michael H Herzog
The motion of parts of an object is usually perceived relative to the object, i.e., nonretinotopically, rather than in retinal coordinates. For example, we perceive a reflector to rotate on the wheel of a moving bicycle even though its trajectory is cycloidal on the retina. The rotation is perceived because the motion of the object (bicycle) is discounted from the motion of its parts (reflector). It seems that the visual system can easily compute the object motion and subtract it from the part motion. Bikes move usually rather predictably...
August 1, 2017: Journal of Vision
https://www.readbyqxmd.com/read/28776333/the-prevalence-of-drinking-and-biking-and-associated-risk-factors-the-korea-national-health-and-nutrition-examination-survey
#9
Se Hwan Hwang, Ma Rhip Ahn, Kyung Do Han, Jung Ho Lee
With the steady rise of health and environmental awareness, the number of bicyclists is increasing. However, there are few epidemiologic studies on bicycling under the influence (BUI). The aim of this study was to determine the prevalence of BUI and the associated risk factors in a representative Korean population. The data of 4,833 adult bicyclists who participated in the Korean National Health and Nutrition Examination Survey (2010-2012) were analyzed. Among the 4,833 participants investigated in this study, 586 (12...
September 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28749730/static-versus-dynamic-kinematics-in-cyclists-a-comparison-of-goniometer-inclinometer-and-3d-motion-capture
#10
COMPARATIVE STUDY
W Holliday, J Fisher, R Theo, J Swart
Kinematic measurements conducted during bike set-ups utilise either static or dynamic measures. There is currently limited data on reliability of static and dynamic measures nor consensus on which is the optimal method. The aim of the study was to assess the difference between static and dynamic measures of the ankle, knee, hip, shoulder and elbow. Nineteen subjects performed three separate trials for a 10-min duration at a fixed workload (70% of peak power output). Static measures were taken with a standard goniometer (GM), an inclinometer (IM) and dynamic three-dimensional motion capture (3DMC) using an eight camera motion capture system...
October 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28669565/helmet-use-among-personal-bicycle-riders-and-bike-share-users-in-vancouver-bc
#11
Moreno Zanotto, Meghan L Winters
INTRODUCTION: Public bike share users have low prevalence of helmet use, and few public bike share systems make helmets available. In summer 2016, a public bike share system launched in Vancouver, BC. Each bicycle is equipped with a free helmet, in response to BC's all-ages compulsory helmet law. This study assessed the prevalence of helmet use among adult cyclists on personal and public bicycles in Vancouver. METHODS: A survey of adult cyclists (age estimated at ≥16 years) at five screen line sites and at 15 public bike share docking stations was conducted...
October 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28615024/mixed-methods-analysis-of-eighteen-worksite-policies-programs-and-environments-for-physical-activity
#12
J Aaron Hipp, Elizabeth A Dodson, Jung Ae Lee, Christine M Marx, Lin Yang, Rachel G Tabak, Christine Hoehner, Oriol Marquet, Ross C Brownson
BACKGROUND: This study examined whether specific worksite supports for physical activity (PA) were associated with total and domain-specific PA. METHODS: A cross-sectional, telephone-based study was conducted in four Missouri, USA, metropolitan areas in 2012 and 2013. Outcome variables included total PA and sub-domains (leisure, work, travel) measured using the International Physical Activity Questionnaire. Logistic regression determined odds of meeting PA recommendations, given access to and use of 18 unique PA worksite supports...
June 14, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28537540/-e-bikers-are-more-often-seriously-injured-in-bicycle-accidents-results-from-the-groningen-bicycle-accident-database
#13
H P A M Poos, T L Lefarth, J S Harbers, K W Wendt, M El Moumni, I H F Reininga
OBJECTIVE: Analysing injury types, injury severity and mortality in victims of accidents with electric bicycles in comparison with conventional bicycles. DESIGN: Prospective cohort study. METHOD: Data of patients treated at the Accident & Emergency Department of the University Medical Center Groningen after a bicycle accident are being entered in a database since 2014. We have analysed this database for accidents with electric bicycles (e-bikes) and conventional bicycles occurring among adult patients for the period of July 2014 to May 2016...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28535477/the-effect-of-crash-characteristics-on-cyclist-injuries-an-analysis-of-virginia-automobile-bicycle-crash-data
#14
Erin Robartes, T Donna Chen
This paper examines bicyclist, automobile driver, vehicle, environmental, and roadway characteristics that influence cyclist injury severity in order to determine which factors should be addressed to mitigate the worst bicyclist injuries. An ordered probit model is used to examine single bicycle-single vehicle crashes from Virginia police crash report data from 2010 to 2014. Five injury severity levels are considered: fatalities, severe injuries, minor or possible injuries, no apparent injuries, and no injury...
July 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28454856/safety-impacts-of-bicycle-infrastructure-a-critical-review
#15
REVIEW
Jonathan DiGioia, Kari Edison Watkins, Yanzhi Xu, Michael Rodgers, Randall Guensler
PROBLEM AND METHOD: This paper takes a critical look at the present state of bicycle infrastructure treatment safety research, highlighting data needs. Safety literature relating to 22 bicycle treatments is examined, including findings, study methodologies, and data sources used in the studies. Some preliminary conclusions related to research efficacy are drawn from the available data and findings in the research. RESULTS AND DISCUSSION: While the current body of bicycle safety literature points toward some defensible conclusions regarding the safety and effectiveness of certain bicycle treatments, such as bike lanes and removal of on-street parking, the vast majority treatments are still in need of rigorous research...
June 2017: Journal of Safety Research
https://www.readbyqxmd.com/read/28446180/physical-activity-when-riding-an-electric-assisted-bicycle
#16
COMPARATIVE STUDY
Sveinung Berntsen, Lena Malnes, Aleksander Langåker, Elling Bere
BACKGROUND: The objectives of the present study were to compare time spent cycling, exercise intensity, and time spent in moderate- (MPA) and vigorous intensity physical activity (VPA) when cycling on an E-bike and a conventional bicycle on two "cycling-to-work" routes with differences in topography, defined as a hilly and a flat route. METHODS: Eight adults (23-54 years, two women) cycled outdoors on a conventional bicycle and an E-bike, on a flat (8.2 km) and a hilly (7...
April 26, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28436737/bicycle-helmet-effectiveness-is-not-overstated
#17
Jake Olivier, Igor Radun
OBJECTIVE: The objective of this study was to discuss the challenges in estimating bicycle helmet effectiveness from case-control studies of injured cyclists and to estimate helmet effectiveness from cases and available exposure data. METHODS: Data were extracted from studies of cyclists in Seattle; Victoria and New South Wales, Australia; and The Netherlands. Estimates of helmet use were used as exposure to compute relative risks for Seattle and Victorian data...
October 3, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28406361/predictors-of-performance-in-a-4-h-mountain-bike-race
#18
Andrew R Novak, Kyle J M Bennett, Job Fransen, Ben J Dascombe
This study aimed to cross validate previously developed predictive models of mountain biking performance in a new cohort of mountain bikers during a 4-h event (XC4H). Eight amateur XC4H cyclists completed a multidimensional assessment battery including a power profile assessment that consisted of maximal efforts between 6 and 600 s, maximal hand grip strength assessments, a video-based decision-making test as well as a XC4H race. A multiple linear regression model was found to predict XC4H performance with good accuracy (R(2) = 0...
April 13, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28326809/identifying-factors-affecting-the-safety-of-mid-block-bicycle-lanes-considering-mixed-2-wheeled-traffic-flow
#19
Lu Bai, Ching-Yao Chan, Pan Liu, Chengcheng Xu
OBJECTIVE: Electric bikes (e-bikes) have been one of the fastest growing trip modes in Southeast Asia over the past 2 decades. The increasing popularity of e-bikes raised some safety concerns regarding urban transport systems. The primary objective of this study was to identify whether and how the generalized linear regression model (GLM) could be used to relate cyclists' safety with various contributing factors when riding in a mid-block bike lane. The types of 2-wheeled vehicles in the study included bicycle-style electric bicycles (BSEBs), scooter-style electric bicycles (SSEBs), and regular bicycles (RBs)...
October 3, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28303616/bike-peptides-a-ride-through-the-membrane
#20
Júlia García-Pindado, Soledad Royo, Meritxell Teixidó, Ernest Giralt
Several natural peptides have a biaryl or biaryl ether motif in their biologically active structures. A model bicyclic pentapeptide containing a biaryl bridge has been synthesized by solid-phase peptide synthesis combining on-resin Suzuki and Miyaura cross-coupling reactions. Its biological properties in terms of permeability, stability and cytotoxicity have been studied, demonstrating the positive contribution of the biaryl bridge, excellent membrane penetration and serum stability Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd...
April 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
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