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https://www.readbyqxmd.com/read/28806276/circulating-progenitor-cell-response-to-exercise-in-wheelchair-racing-athletes
#1
Grace M Niemiro, Thomas Edwards, J P Barfield, Joseph W Beals, Elizabeth M Broad, Robert W Motl, Nicholas A Burd, Lara A Pilutti, Michael De Lisio
INTRODUCTION: Circulating progenitor cells (CPCs) are a heterogeneous population of stem/progenitor cells in peripheral blood that participate in tissue repair. CPC mobilization has been well characterized in able-bodied persons, but has not been previously investigated in wheelchair racing athletes. The purpose of this study was to characterize CPC and CPC sub-population mobilization in elite wheelchair racing athletes in response to acute, upper-extremity aerobic exercise to determine if CPC responses are similar to ambulatory populations...
August 11, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28798038/infographics-winning-road-cycle-races-a-team-sky-perspective
#2
EDITORIAL
Neil Heron, Richard Usher, Derick MacLeod, Inigo Sarrieguil, Juan Mercadel, Mark A Tully
No abstract text is available yet for this article.
August 10, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28746232/the-effect-of-topical-thiocolchicoside-in-preventing-and-reducing-the-increase-of-muscle-tone-stiffness-and-soreness-a-real-life-study-on-top-level-road-cyclists-during-stage-competition
#3
Marco Gervasi, Davide Sisti, Piero Benelli, Eneko Fernández-Peña, Cinzia Calcabrini, Marco B L Rocchi, Luigi Lanata, Michela Bagnasco, Andrea Tonti, Stocchi Vilberto, Piero Sestili
In professional road cyclists, the majority of overuse injuries affect the lower limbs and are mostly represented by contractures or muscle shortening, characterized by an increase of tone and stiffness and a variation of elasticity. Treatment and prevention of these specific conditions may include physical, supplementary, and pharmacologic support. The aim of this real-life study was to determine: first, the alterations of tone, stiffness, elasticity, and soreness of rectus femoris (RF) and biceps femoris (BF) in top class cyclists engaged in 3 multistage races, and second, whether any variable in the management of the athletes may affect the prevention and/or reduction of such alterations...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28707561/profiling-the-physical-load-on-riders-of-top-level-motorcycle-circuit-racing
#4
Emanuele D'Artibale, Paul B Laursen, John B Cronin
Manoeuvring a motorcycle at high-speed in official competition has been shown to expose riders to substantial and complex physiological and psychological demands, however few studies have analysed the physical load experienced by professional racers. This study aimed to quantify the physical stress experienced by riders and explore relationships between performance related variables (i.e. crashes). Performance and braking data were collected from official race reports from 2013 to 2015 of the top class of the FIM Road Racing Grand Prix World Championship...
July 14, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28701100/intervention-analysis-of-the-safety-effects-of-a-legislation-targeting-excessive-speeding-in-canada
#5
Suliman A Gargoum, Karim El-Basyouny
Excessive speeding is a major traffic safety concern consequently, numerous countermeasures have been considered to mitigate this problem. Excessive speeding, street racing and stunt driving activities subject all road users to extreme risk. To address this problem, three Canadian provinces introduced severe sanctions against drivers who exceed speed limits by high margins. Under the laws offenders were subject to immediate license suspension and vehicle impoundment. In this paper, intervention analysis of the collision data from the three provinces was conducted to identify the safety effects of the legislation...
July 13, 2017: International Journal of Injury Control and Safety Promotion
https://www.readbyqxmd.com/read/28700517/a-longitudinal-assessment-of-bone-mineral-density-and-body-composition-in-competitive-cyclists
#6
Breanne S Baker, Raoul F Reiser
Competitive cycling has been associated with low bone mineral density (BMD); however, BMD is a multifaceted issue. The purpose of this study was to investigate how age (18-49 years), sex, USA Cycling Category (elite-4) and racing type (road and multiple bikes), influenced body composition across a season in competitive cyclists. February marked the preseason, where 42 participants (22 males, 20 females) completed a health history and cycling questionnaire, four day dietary log and a Dual-energy X-ray absorptiometry (DXA) scan and repeated the measures 180±11 days later...
July 8, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28669689/effects-of-erythropoietin-on-cycling-performance-of-well-trained-cyclists-a-double-blind-randomised-placebo-controlled-trial
#7
Jules A A C Heuberger, Joris I Rotmans, Pim Gal, Frederik E Stuurman, Juliëtte van 't Westende, Titiaan E Post, Johannes M A Daniels, Matthijs Moerland, Peter L J van Veldhoven, Marieke L de Kam, Herman Ram, Olivier de Hon, Jelle J Posthuma, Jacobus Burggraaf, Adam F Cohen
BACKGROUND: Substances that potentially enhance performance (eg, recombinant human erythropoietin [rHuEPO]) are considered doping and are therefore forbidden in sports; however, the scientific evidence behind doping is frequently weak. We aimed to determine the effects of rHuEPO treatment in well trained cyclists on maximal, submaximal, and race performance and on safety, and to present a model clinical study for doping research on other substances. METHODS: We did this double-blind, randomised, placebo-controlled trial at the Centre for Human Drug Research in Leiden (Netherlands)...
August 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28547345/where-are-adults-active-an-examination-of-physical-activity-locations-using-gps-in-five-us-cities
#8
Katelyn M Holliday, Annie Green Howard, Michael Emch, Daniel A Rodríguez, Wayne D Rosamond, Kelly R Evenson
Increasing physical activity (PA) at the population level requires appropriately targeting intervention development. Identifying the locations in which participants with various sociodemographic, body weight, and geographic characteristics tend to engage in varying intensities of PA as well as locations these populations underutilize for PA may facilitate this process. A visual location-coding protocol was developed and implemented in Google Fusion Tables and Maps using data from participants (N = 223, age 18-85) in five states...
August 2017: Journal of Urban Health: Bulletin of the New York Academy of Medicine
https://www.readbyqxmd.com/read/28542090/5-km-time-trial-reliability-of-a-non-motorized-treadmill-and-comparison-of-physiological-and-perceptual-responses-versus-a-motorized-treadmill
#9
Hunter S Waldman, Alex J Heatherly, Ashton F Waddell, Ben M Krings, Eric K O'Neal
This study examined the reproducibility of performance across 3 non-motorized treadmill (NMT) 5-km time trials (TT) and physiological, gait, and perceptual differences of running at 5-km pace for both NMT and motorized treadmills (MT). Ten male runners experienced in road racing that had never run on a NMT completed 3 TT to establish personal best 5-km pace. In a later session, participants ran at this pace for 5 min on the NMT while metabolic, gait, and perceptual measures were recorded and then ran at outdoor 5-km personal best pace on a MT at 1% grade (counter-balanced crossover design)...
May 24, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28525454/bilateral-tibial-osteofibrous-dysplasia-on-18f-fdg-pet-ct
#10
Hiroaki Nagano, Megumi Jinguji, Masanori Nakajo, Michiyo Higashi, Takashi Yoshiura
A 17-year-old girl had pain in the right front lower leg while road racing 2 months earlier. Radiography and CT showed osteolytic lesions in the medial part of the bilateral tibia. Bone scintigraphy showed focally increased radiotracer uptake in the bilateral tibia. The lesions showed hypermetabolism on FDG PET/CT. Osteofibrous dysplasia was suspected from the radiographic findings, but adamantinoma or metastases could not be excluded. Surgical biopsies were performed, and histopathologic studies confirmed the diagnosis of bilateral osteofibrous dysplasia...
August 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28499425/hand-held-cell-phone-use-while-driving-legislation-and-observed-driver-behavior-among-population-sub-groups-in-the-united-states
#11
Toni M Rudisill, Motao Zhu
BACKGROUND: Cell phone use behaviors are known to vary across demographic sub-groups and geographic locations. This study examined whether universal hand-held calling while driving bans were associated with lower road-side observed hand-held cell phone conversations across drivers of different ages (16-24, 25-59, ≥60 years), sexes, races (White, African American, or other), ruralities (suburban, rural, or urban), and regions (Northeast, Midwest, South, and West). METHODS: Data from the 2008-2013 National Occupant Protection Use Survey were merged with states' cell phone use while driving legislation...
May 12, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28445214/teaching-the-social-determinants-of-health-a-path-to-equity-or-a-road-to-nowhere
#12
Malika Sharma, Andrew D Pinto, Arno K Kumagai
Medical schools are increasingly called to include social responsibility in their mandates. As such, they are focusing their attention on the social determinants of health (SDOH) as key drivers in the health of the patients and communities they serve. However, underlying this emphasis on SDOH is the assumption that teaching medical students about SDOH will lead future physicians to take action to help achieve health equity. There is little evidence to support this belief. In many ways, the current approach to SDOH within medical education positions the SDOH as "facts to be known" rather than as "conditions to be challenged and changed...
April 25, 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28424267/using-a-novel-data-resource-to-explore-heart-rate-during-mountain-and-road-running
#13
Andrew Best, Barry Braun
Online, accessible performance and heart rate data from running competitions are posted publicly or semi-publicly to social media. We tested the efficacy of one such data resource- Strava- as a tool in exercise physiology investigations by exploring heart rate differences in mountain racing and road racing running events. Heart rate and GPS pace data were gathered from Strava activities posted by 111 males aged 21-49, from two mountain races (Mt. Washington Road Race and Pike's Peak Ascent) and two road race distances (half marathon and marathon)...
April 2017: Physiological Reports
https://www.readbyqxmd.com/read/28282753/reliability-of-the-virtual-elevation-method-to-evaluate-rolling-resistance-of-different-mountain-bike-cross-country-tyres
#14
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/28253040/demands-of-world-cup-competitions-in-elite-women-road-cycling
#15
Paolo Menaspà, Marco Sias, Gene Bates, Antonio La Torre
PURPOSE: Describing the demand of recent World Cup (WC) races comparing Top 10 (T10) and non-Top 10 (N-T10) performances using power data. METHODS: Race data were collected in 1-day World Cup races during the 2012-2015 road cycling seasons. Seven female cyclists completed 49 WC races, finishing 25 times in T10 and 24 times N-T10. Peak power (1 s) and Maximal Mean Power (MMP) for durations of 5, 10, 20 and 30 s and 1, 2, 5, 10, 20, 30 and 60 min expressed as power to weight ratio were analysed in T10 and N-T10...
March 2, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28246070/accuracy-and-adoption-of-wearable-technology-used-by-active-citizens-a-marathon-event-field-study
#16
Monika Pobiruchin, Julian Suleder, Richard Zowalla, Martin Wiesner
BACKGROUND: Today, runners use wearable technology such as global positioning system (GPS)-enabled sport watches to track and optimize their training activities, for example, when participating in a road race event. For this purpose, an increasing amount of low-priced, consumer-oriented wearable devices are available. However, the variety of such devices is overwhelming. It is unclear which devices are used by active, healthy citizens and whether they can provide accurate tracking results in a diverse study population...
February 28, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28144412/secular-trend-in-thinness-prevalence-for-26-years-1989-2014-among-high-school-runners-in-japan
#17
Norimitsu Kinoshita, Rei Fukuda
BACKGROUND: Female distance runners are predisposed to thinness for performance reasons and at greater risk for health-related consequences than the general population. OBJECTIVES: The aim of the study was to evaluate the secular trends in thinness among competitive distance runners in Japanese high schools with sex-specific comparison. METHODS: Body mass index (BMI) were analysed in 9,881 female and 12,786 male runners participating in the annual national road relay races between 1989 and 2014 using the directory of a track and field magazine...
December 2016: Asian Journal of Sports Medicine
https://www.readbyqxmd.com/read/28125059/racial-differences-in-perceptions-of-air-pollution-health-risk-does-environmental-exposure-matter
#18
COMPARATIVE STUDY
Jayajit Chakraborty, Timothy W Collins, Sara E Grineski, Alejandra Maldonado
This article extends environmental risk perception research by exploring how potential health risk from exposure to industrial and vehicular air pollutants, as well as other contextual and socio-demographic factors, influence racial/ethnic differences in air pollution health risk perception. Our study site is the Greater Houston metropolitan area, Texas, USA-a racially/ethnically diverse area facing high levels of exposure to pollutants from both industrial and transportation sources. We integrate primary household-level survey data with estimates of excess cancer risk from ambient exposure to industrial and on-road mobile source emissions of air toxics obtained from the U...
January 25, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28005921/association-of-functional-impairments-and-co-morbid-conditions-with-driving-performance-among-cognitively-normal-older-adults
#19
David B Carr, Peggy P Barco, Ganesh M Babulal, Sarah H Stout, Anne M Johnson, Chengjie Xiong, John C Morris, Catherine M Roe
OBJECTIVES: To examine the relationship between key functional impairments, co-morbid conditions and driving performance in a sample of cognitively normal older adults. DESIGN: Prospective observational study. SETTING: The Knight Alzheimer's Disease Research Center, Washington University at St. Louis. PARTICIPANTS: Individuals with normal cognition, 64.9 to 88.2 years old (N = 129), with a valid driver's license, who were currently driving at least once per week, and who had participated in longitudinal studies at the Knight Alzheimer's Disease Research Center...
2016: PloS One
https://www.readbyqxmd.com/read/27993115/virus-oncolytic-virus-and-human-prostate-cancer
#20
Guang Bin Liu, Liang Zhao, Lifang Zhang, Kong-Nan Zhao
Prostate cancer (PCa), a disease, is characterized by abnormal cell growth in the prostate - a gland in the male reproductive system. PCa is one of the leading causes of cancer death among men of all races. Although older age and a family history of the disease have been recognized as the risk factors of PCa, the cause of this cancer remains unclear. Mounting evidence suggests that infections with various viruses are causally linked to PCa pathogenesis. Published studies have provided strong evidence that at least two viruses (RXMV and HPV) contribute to prostate tumourigenicity and impact on the survival of patients with malignant PCa...
December 15, 2016: Current Cancer Drug Targets
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