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https://www.readbyqxmd.com/read/28436737/bicycle-helmet-effectiveness-is-not-overstated
#1
Jake Olivier, Igor Radun
OBJECTIVE: 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, USA, Victoria and New South Wales (NSW), Australia and the Netherlands. Estimates of helmet use were used as exposure to compute relative risks for Seattle and Victorian data. Cycling distance data are routinely collected in the Netherlands; however, this data cannot be disaggregated by helmet use which makes it unsuitable for estimating helmet effectiveness...
March 1, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28415065/acute-effect-of-biomechanical-muscle-stimulation-on-the-counter-movement-vertical-jump-power-and-velocity-in-division-i-football-players
#2
Bert H Jacobson, Taylor P Monaghan, John H Sellers, Eric C Conchola, Zach K Pope, Rob G Glass
Jacobson, BH, Monaghan, TP, Sellers, JH, Conchola, EC, Pope, ZK, and Glass, RG. Acute effect of biomechanical muscle stimulation on the counter-movement vertical jump power and velocity in division I football players. J Strength Cond Res 31(5): 1259-1264, 2017-Research regarding whole body vibration (WBV) largely supports such training augmentation in attempts to increase muscle strength and power. However, localized biomechanical vibration has not received the same attention. The purpose of this study was to assess peak and average power before and after acute vibration of selected lower-body sites in division I athletes...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28406361/predictors-of-performance-in-a-4-h-mountain-bike-race
#3
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/28399743/foolhardy-idea
#4
Claire Brown
Saying that newly qualified nurses should prescribe is like saying a person who has just learned to ride a bike should start using a 10-foot ramp to do tricks without a helmet.
April 12, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28384490/multiuse-trail-intersection-safety-analysis-a-crowdsourced-data-perspective
#5
Ben Jestico, Trisalyn A Nelson, Jason Potter, Meghan Winters
Real and perceived concerns about cycling safety are a barrier to increased ridership in many cities. Many people prefer to bike on facilities separated from motor vehicles, such as multiuse trails. However, due to underreporting, cities lack data on bike collisions, especially along greenways and multiuse paths. We used a crowdsourced cycling incident dataset (2005-2016) from BikeMaps.org for the Capital Regional District (CRD), BC, Canada. Our goal was to identify design characteristics associated with unsafe intersections between multiuse trails and roads...
April 3, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28356640/fatigue-influences-lower-extremity-angular-velocities-during-a-single-leg-drop-vertical-jump
#6
Akihiro Tamura, Kiyokazu Akasaka, Takahiro Otsudo, Junya Shiozawa, Yuka Toda, Kaori Yamada
[Purpose] Fatigue alters lower extremity landing strategies and decreases the ability to attenuate impact during landing. The purpose of this study was to reveal the influence of fatigue on dynamic alignment and joint angular velocities in the lower extremities during a single leg landing. [Subjects and Methods] The 34 female college students were randomly assigned to either the fatigue or control group. The fatigue group performed single-leg drop vertical jumps before, and after, the fatigue protocol, which was performed using a bike ergometer...
March 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/28352184/aerobic-fitness-is-associated-with-low-cardiovascular-disease-risk-the-impact-of-lifestyle-on-early-risk-factors-for-atherosclerosis-in-young-healthy-swedish-individuals-the-lifestyle-biomarker-and-atherosclerosis-study
#7
Maria Fernström, Ulrika Fernberg, Gabriella Eliason, Anita Hurtig-Wennlöf
BACKGROUND: The progression of cardiovascular disease (CVD) and atherosclerosis is slow and develops over decades. In the cross-sectional Swedish Lifestyle, Biomarker, and Atherosclerosis study, 834 young, self-reported healthy adults aged 18.0-25.9 years have been studied to identify early risk factors for atherosclerosis. PURPOSE: The aims of this study were to 1) assess selected cardiometabolic biomarkers, carotid intima-media thickness (cIMT) as a marker of subclinical atherosclerosis, and lifestyle-related indicators (food habits, handgrip strength, and oxygen uptake, VO2 max); 2) analyze the associations between cIMT and lifestyle factors; and 3) identify subjects at risk of CVD using a risk score and to compare the characteristics of subjects with and without risk of CVD...
2017: Vascular Health and Risk Management
https://www.readbyqxmd.com/read/28350714/multiple-transportable-carbohydrate-impact-on-long-distance-triathlon-performance
#8
David S Rowlands, Stuart D Houltham
The ingestion of multiple (2:1 glucose:fructose) transportable carbohydrate in beverages at high rates (>78 g·h) during endurance exercise enhances exogenous carbohydrate oxidation, fluid absorption, gut comfort, and performance, relative to glucose alone. But during long-distance endurance competition, athletes prefer a solid-gel-drink format, and the effect size of multiple-transportable carbohydrate is unknown. PURPOSE: To determine the effect of multiple-transportable carbohydrate on triathlon competition performance when ingested within bars, gels, and drinks...
March 27, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28346585/improving-public-health-by-making-cities-friendly-to-walking-and-biking-safer-more-active-transportation-starts-with-the-street
#9
Janette Sadik-Khan, Seth Solomonow
No abstract text is available yet for this article.
March 27, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28345260/resistance-training-and-aerobic-training-improve-muscle-strength-and-aerobic-capacity-in-chronic-inflammatory-demyelinating-polyneuropathy
#10
Lars H Markvardsen, Kristian Overgaard, Karen Heje, Søren H Sindrup, Ingelise Christiansen, John Vissing, Henning Andersen
INTRODUCTION: We investigated the effects of aerobic and resistance exercise in patients with chronic inflammatory demyelinating polyneuropathy (CIDP). METHODS: Eighteen CIDP patients treated with subcutaneous immunoglobulin performed 12 weeks of aerobic exercise and 12 weeks of resistance exercise after a run-in period of 12 weeks without exercise. Three times weekly the participants performed aerobic exercise on an ergometer bike or resistance exercise with unilateral training of knee and elbow flexion/extension...
March 27, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28344539/scaphocapitate-syndrome-with-associated-trans-scaphoid-trans-hamate-perilunate-dislocation-a-case-report-and-description-of-surgical-fixation
#11
Fiesky A Nunez, T David Luo, Jesse B Jupiter, Fiesky A Nunez
Background: Perilunate fracture dislocations are often associated with fractures of the distal pole of the scaphoid or the proximal pole of the capitate. However, the combination of perilunate dislocation with multiple carpal fractures and associated scaphocapitate syndrome is very rare. Methods: We report a unique case of scaphocapitate fracture syndrome with perilunate dislocation and fracture of the hamate resulting from a high-energy injury to the wrist during a dirt-bike competition. Results: Open reduction and internal fixation of the scaphoid fracture with a 3...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28336419/scarf-related-injuries-at-a-major-trauma-center-in-northern-india
#12
Pritish Singh, Ashok Kumar, Vishal Shekhawat
PURPOSE: Scarf is a long loose piece of cloth worn around the neck and shoulder. Despite cultural association of this apparel, it is part of numerous injury episodes of varying enormity. Entanglement of loose scarf in spoke wheels of bike, tricycle, belt driven machines like sugarcane juice machine, thresher, grinding machines, etc is observed both in social and industrial milieu. This study aims to investigate the scarf-related injuries at a major trauma center in northern India. METHODS: From June 2013 to May 2015, a hospital-based prospective observational study was done in patients who presented to a level 1 trauma center in northern India with the mode of injury involving scarf around the neck...
April 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28326809/identifying-factors-affecting-the-safety-of-mid-block-bicycle-lanes-considering-mixed-two-wheeled-traffic-flow
#13
Lu Bai, Ching-Yao Chan, Pan Liu, Chengcheng Xu
OBJECTIVE: Electric bikes (e-bikes) were one of the fastest growing trip modes in Southeast Asia over the past two decades. The increasing popularity of e-bikes raised some safety concerns on urban transport system. The primary objective of this study was to identify whether and how the generalized linear regression model (GLM) could be used to relate the cyclists' safety with various contributing factors when they were riding in a mid-block bike lane. The types of two-wheeled vehicles in the study included bicycle style electric bicycles (BSEBs), scooter style electric bicycles (SSEBs) and regular bicycles (RBs)...
March 22, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28314078/high-physical-fitness-is-associated-with-reduction-in-basal-and-exercise-induced-inflammation
#14
Øyunn Kleiven, Magnus Bjørkavoll-Bergseth, Tor Melberg, Øyvind Skadberg, Rolf Bergseth, Jone Selvåg, Bjørn Auestad, Pål Aukrust, Torbjørn Aarsland, Stein Ørn
C-reactive protein (CRP) increases after strenuous exercise. It has been a concern that prolonged strenuous exercise may be harmful, and induce a deleterious inflammatory response. The purpose of this study was to 1) Assess and quantify the magnitude of CRP response following an endurance cycling competition in healthy middle-aged recreational cyclists. 2) Identify important determinants of this response. 3) Identify the relationship between CRP, myocardial damage (cardiac Troponin I (cTnI)) and myocardial strain (B-type natriuretic peptide (BNP))...
March 17, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28303616/bike-peptides-a-ride-through-the-membrane
#15
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...
March 16, 2017: Journal of Peptide Science: An Official Publication of the European Peptide Society
https://www.readbyqxmd.com/read/28303338/blood-glucose-kinetics-and-physiological-changes-in-a-type-1-diabetic-finisher-of-the-ultraman-triathlon-a-case-study
#16
Christopher W Bach, Daniel A Baur, William S Hyder, Michael J Ormsbee
PURPOSE: To investigate the blood glucose kinetics and physiological effects experienced by a type 1 diabetic (T1D) finisher of a 3-day, multi-stage ultra endurance triathlon consisting of a 10 km swim and 144.8 km bike (stage 1), a 275.4 km bike (stage 2), and an 84.4 km run (stage 3). METHODS: The athlete self-monitored blood glucose (SMBG) levels via fingerstick blood draw and hand-held glucometer. Researchers evaluated blood glucose kinetics via a continuous glucose monitoring device...
March 16, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28282878/optimizing-scoring-and-sampling-methods-for-assessing-built-neighborhood-environment-quality-in-residential-areas
#17
Joel Adu-Brimpong, Nathan Coffey, Colby Ayers, David Berrigan, Leah R Yingling, Samantha Thomas, Valerie Mitchell, Chaarushi Ahuja, Joshua Rivers, Jacob Hartz, Tiffany M Powell-Wiley
Optimization of existing measurement tools is necessary to explore links between aspects of the neighborhood built environment and health behaviors or outcomes. We evaluate a scoring method for virtual neighborhood audits utilizing the Active Neighborhood Checklist (the Checklist), a neighborhood audit measure, and assess street segment representativeness in low-income neighborhoods. Eighty-two home neighborhoods of Washington, D.C. Cardiovascular Health/Needs Assessment (NCT01927783) participants were audited using Google Street View imagery and the Checklist (five sections with 89 total questions)...
March 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28282753/reliability-of-the-virtual-elevation-method-to-evaluate-rolling-resistance-of-different-mountain-bike-cross-country-tyres
#18
Thomas Maier, Beat Müller, Lucas Schmid, Thomas Steiner, Jon Peter Wehrlin
Although a low rolling resistance is advantageous in mountain bike cross-country racing, no studies have used the virtual elevation method to compare tyres from different manufacturers as used in international competitions so far. The aims of this study were to assess the reliability of this method, to compare the off-road rolling resistance between tyres and to calculate the influence on off-road speed. Nine 29-in. mountain bike cross-country tyres were tested on a course representing typical ground surface conditions 5 or 6 times...
February 9, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28274379/the-potential-of-bike-desks-to-reduce-sedentary-time-in-the-office-a-mixed-method-study
#19
T Torbeyns, B de Geus, S Bailey, L Decroix, R Meeusen
OBJECTIVES: To investigate the use of bike desks in an office setting and office workers' experiences of bike desks. STUDY DESIGN: Mixed-method study; quantitative data of cycling desk use in combination with qualitative data of users' experience were obtained via questionnaires. METHODS: Bike desks were provided in an office setting during a five-month period. The amount of cycled time, distance and the cycling intensity were registered. At the end of the intervention period, participants filled out a questionnaire about their experiences of cycling desks in the office...
March 2017: Public Health
https://www.readbyqxmd.com/read/28274377/corrigendum-to-the-potential-of-bike-desks-to-reduce-sedentary-time-in-the-office-a-mixed-method-study-public-health-144-2017-16-22
#20
T Torbeyns, B de Geus, S Bailey, L Decroix, R Meeusen
No abstract text is available yet for this article.
March 2017: Public Health
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