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https://www.readbyqxmd.com/read/28930880/cycling-power-outputs-predict-functional-threshold-power-and-maximum-oxygen-uptake
#1
Joshua Denham, John Scott-Hamilton, Amanda D Hagstrom, Adrian J Gray
Functional threshold power (FTP) has emerged as a correlate of lactate threshold and is commonly assessed by recreational and professional cyclists for tailored exercise programing. To identify whether results from traditional aerobic and anaerobic cycling tests could predict FTP and V˙ O2max, we analysed the association between estimated FTP, maximum oxygen uptake (V˙ O2max [mlkgmin]) and power outputs obtained from a maximal cycle ergometry cardiopulmonary exercise test (CPET) and a 30-s Wingate test in a heterogeneous cohort of cycle-trained and untrained individuals (N=40, mean±SD; age: 32...
September 11, 2017: Journal of Strength and Conditioning Research
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
#2
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...
September 15, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28917096/how-bicycle-level-of-traffic-stress-correlate-with-reported-cyclist-accidents-injury-severities-a-geospatial-and-mixed-logit-analysis
#3
Chen Chen, Jason C Anderson, Haizhong Wang, Yinhai Wang, Rachel Vogt, Salvador Hernandez
Transportation agencies need efficient methods to determine how to reduce bicycle accidents while promoting cycling activities and prioritizing safety improvement investments. Many studies have used standalone methods, such as level of traffic stress (LTS) and bicycle level of service (BLOS), to better understand bicycle mode share and network connectivity for a region. However, in most cases, other studies rely on crash severity models to explain what variables contribute to the severity of bicycle related crashes...
September 13, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28916235/corrigendum-to-influence-of-road-markings-lane-widths-and-driver-behaviour-on-proximity-and-speed-of-vehicles-overtaking-cyclists-accid-anal-prev-73-2014-100-108
#4
Stella C Shackel, John Parkin
No abstract text is available yet for this article.
September 12, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28902126/work-rate-during-self-paced-exercise-is-not-mediated-by-the-rate-of-heat-storage
#5
Brian J Friesen, Julien D Périard, Martin P Poirier, Martin Lauzon, Denis P Blondin, Francois Haman, Glen P Kenny
PURPOSE: To date, there have been mixed findings on whether greater anticipatory reductions in self-paced exercise intensity in the heat are mediated by early differences in rate of body heat storage. The disparity may be due to an inability to accurately measure minute-to-minute changes in whole-body heat loss. Thus, we evaluated whether early differences in rate of heat storage can mediate exercise intensity during self-paced cycling at a fixed rate of perceived exertion (RPE of 16; hard-to-very-hard work effort) in COOL (15°C), NORMAL (25°C) and HOT (35°C) ambient conditions...
September 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28902115/repeated-high-intensity-cycling-performance-is-unaffected-by-timing-of-carbohydrate-ingestion
#6
Ren-Jay Shei, Hunter L Paris, Christopher P Beck, Robert F Chapman, Timothy D Mickleborough
To determine whether carbohydrate feeding taken immediately before, early, or late in a series of high-intensity cycling exercises affected cycling performance 16 trained, male cyclists (> 6hr post-prandial) performed three, 4-km cycling time trials (TT1, TT2, TT3) separated by 15 min of active recovery on four separate occasions. Carbohydrate feeding (80g) was given either before TT1 (PRE1), before TT2 (PRE2), before TT3 (PRE3), or not at all (control, CTL). Treatment order was randomized. Sweet-placebo was given prior to the other time trials...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28899327/reducing-the-rate-of-serious-injuries-to-cyclists
#7
Raphael H Grzebieta, Jake Olivier, Soufiane Boufous
No abstract text is available yet for this article.
September 18, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28899316/road-safety-serious-injuries-remain-a-major-unsolved-problem
#8
Ben Beck, Peter A Cameron, Mark C Fitzgerald, Rodney T Judson, Warwick Teague, Ronan A Lyons, Belinda J Gabbe
OBJECTIVE: To investigate temporal trends in the incidence, mortality, disability-adjusted life-years (DALYs), and costs of health loss caused by serious road traffic injury. DESIGN, SETTING AND PARTICIPANTS: A retrospective review of data from the population-based Victorian State Trauma Registry and the National Coronial Information System on road traffic-related deaths (pre- and in-hospital) and major trauma (Injury Severity Score > 12) during 2007-2015.Main outcomes and measures: Temporal trends in the incidence of road traffic-related major trauma, mortality, DALYs, and costs of health loss, by road user type...
September 18, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28892953/effect-of-cycling-on-glycaemia-blood-pressure-and-weight-in-young-individuals-with-type-2-diabetes
#9
Ashok Jhingan, Ram Mohan Jhingan
INTRODUCTION: Aerobic exercise is associated with significant improvement in glycaemia and weight loss in Type 2 diabetes (T2D). Cycling, a form of aerobic exercise can benefit young (18 to <40 years) individuals with T2D. AIM: To assess effect of cycling on glycosylated haemoglobin (HbA1c), blood pressure (BP) and weight over six months in young individuals with T2D. MATERIALS AND METHODS: In this retrospective, observational study, young (18 to <40 years) T2D patients who were being treated without insulin and not on more than two Oral Antidiabetic Drugs (OADs) were identified from a group of cyclists in a metro city from Northern India...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28892462/cycling-performance-is-superior-for-time-to-exhaustion-versus-time-trial-in-endurance-laboratory-tests
#10
Sarah L Coakley, Louis Passfield
Time-to-exhaustion (TTE) trials are used in a laboratory setting to measure endurance performance. However, there is some concern with their ecological validity compared with time-trials (TT). Consequently, we aimed to compare cycling performance in TTE and TT where the duration of the trials was matched. Seventeen trained male cyclists completed three TTE trials at 80, 100 and 105% of maximal aerobic power (MAP). On a subsequent visit they performed three TT over the same duration as the TTE. Participants were blinded to elapsed time, power output, cadence and heart rate (HR)...
September 11, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28886923/the-effect-of-12-month-participation-in-osteogenic-and-non-osteogenic-sports-on-bone-development-in-adolescent-male-athletes-the-pro-bone-study
#11
Dimitris Vlachopoulos, Alan R Barker, Esther Ubago-Guisado, Francisco B Ortega, Peter Krustrup, Brad Metcalf, Jose Castro Pinero, Jonatan R Ruiz, Karen M Knapp, Craig A Williams, Luis A Moreno, Luis Gracia-Marco
OBJECTIVES: Research investigating the longitudinal effects of the most popular sports on bone development in adolescent males is scarce. The aim is to investigate the effect of 12-month participation in osteogenic and non-osteogenic sports on bone development. DESIGN: A 12-month study was conducted in adolescent males involved in football, swimming and cycling and compared with an active control group. METHODS: 116 adolescent males (13.1±0...
September 1, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28879069/biking-practices-and-preferences-in-a-lower-income-primarily-minority-neighborhood-learning-what-residents-want
#12
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/28877225/effect-of-water-based-recovery-on-blood-lactate-removal-after-high-intensity-exercise
#13
Francesco Lucertini, Marco Gervasi, Giancarlo D'Amen, Davide Sisti, Marco Bruno Luigi Rocchi, Vilberto Stocchi, Piero Benelli
This study assessed the effectiveness of water immersion to the shoulders in enhancing blood lactate removal during active and passive recovery after short-duration high-intensity exercise. Seventeen cyclists underwent active water- and land-based recoveries and passive water and land-based recoveries. The recovery conditions lasted 31 minutes each and started after the identification of each cyclist's blood lactate accumulation peak, induced by a 30-second all-out sprint on a cycle ergometer. Active recoveries were performed on a cycle ergometer at 70% of the oxygen consumption corresponding to the lactate threshold (the control for the intensity was oxygen consumption), while passive recoveries were performed with subjects at rest and seated on the cycle ergometer...
2017: PloS One
https://www.readbyqxmd.com/read/28872385/new-records-in-human-power
#14
Thomas Haugen, Gøran Paulsen, Stephen Seiler, Øyvind Sandbakk
Maximal aerobic and anaerobic power are crucial performance determinants in most sports disciplines. Numerous studies have published power data from elite athletes over the years, particularly in runners, cyclists, rowers and cross-country skiers. In this invited review, we define the current "world records" in human upper limits of aerobic and anaerobic power. Currently, V̇O2max values of ~7.5 and 7.0 L·min(-1) in male cross-country (XC) skiers and rowers, respectively, and/or ~90 ml·kg(-1)·min(-1) in XC skiers, cyclists and runners can be described as upper human limits for aerobic power...
September 5, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28872381/pneumatic-compression-fails-to-improve-performance-recovery-in-trained-cyclists
#15
Ryan G Overmayer, Matthew W Driller
PURPOSE: To examine the efficacy of Intermittent Sequential Pneumatic Compression (ISPC) on exercise recovery and subsequent performance, when implemented between a 20-min cycling bout (simulated scratch race) and a 4-min cycling test (simulated individual pursuit), as experienced during an Omnium track cycling competition. METHODS: Twenty-one (13 male, 8 female, mean ± SD; age: 36 ± 14 years) trained cyclists completed a familiarisation trial followed by two experimental trials in a counterbalanced, crossover design...
September 5, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28872369/pacing-strategy-and-tactical-positioning-during-cyclo-cross-races
#16
Arthur H Bossi, Ciaran O'Grady, Richard Ebreo, Louis Passfield, James G Hopker
PURPOSE: To describe pacing strategy and competitive behaviour in elite-level cyclo-cross races. METHODS: Data from 329 men and women competing in 5 editions (2012-2016) of UCI Cyclo-cross World Championships were compiled. Individual mean racing speeds from each lap were normalised to the mean speeds of the whole race. Lap-by-lap and final rankings were also explored. Pacing strategy was compared between sexes and between top- and bottom-placed cyclists. RESULTS: A significant main effect of laps was found in 8 out of 10 races (4 positive, 3 variable, 2 even and 1 negative pacing strategies) and an interaction effect of ranking-based groups was found in 2 (2016, male and female races)...
September 5, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28865992/looking-forward-to-safer-hgvs-the-impact-of-mirrors-on-driver-reaction-times
#17
Callum David Mole, Richard McGilchrist Wilkie
Heavy Goods Vehicle (HGV) collisions are responsible for a disproportionate number of urban vulnerable road user casualties (VRU - cyclists and pedestrians). Blind-spots to the front and side of HGVs can make it difficult (sometimes impossible) to detect close proximity VRUs and may be the cause of some collisions. The current solution to this problem is to provide additional mirrors that can allow the driver to see into the blind-spots. However, keeping track of many mirrors requires frequent off-road glances which can be difficult to execute during demanding driving situations...
August 31, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28865382/air-quality-considerations-for-stormwater-green-street-design
#18
Kathryn M Shaneyfelt, Andrew R Anderson, Prashant Kumar, William F Hunt
Green streets are increasingly being used as a stormwater management strategy to mitigate stormwater runoff at its source while providing other environmental and societal benefits, including connecting pedestrians to the street. Simultaneously, human exposure to particulate matter from urban transportation is of major concern worldwide due to the proximity of pedestrians, drivers, and cyclists to the emission sources. Vegetation used for stormwater treatment can help designers limit the exposure of people to air pollutants...
August 30, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28858058/resistance-training-is-associated-with-higher-lumbar-spine-and-hip-bone-mineral-density-in-competitive-male-cyclists
#19
Shannon L Mathis, Jennifer L Caputo
In contrast to other athletic activities, competitive cycling is associated with low areal bone mineral density (BMD). This investigation evaluated training and dietary factors associated with BMD in a sample of competitive male cyclists. Lumbar spine, total hip, femoral neck, and femoral trochanter BMD were measured with dual x-ray absorptiometry in 40 cyclists at the start of a cycling season. Participants reported weekly hours of cycling and weight training, years of competitive cycling experience, and completed a one-day dietary recall to allow estimation of dietary calcium intake...
August 26, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28844726/cycling-and-spinal-trauma-a-worrying-trend-in-referrals-to-a-national-spine-centre
#20
M P Broe, J C Kelly, P J Groarke, K Synnott, S Morris
INTRODUCTION: Cycling has seen a large increase in popularity worldwide over the last number of years. This has been linked to an increase in the number of road traffic accidents involving cyclists. Participation in cycling as part of competitive sport and endurance events has seen particular growth. AIM: To examine patients referred with spinal trauma related to cycling and to assess whether the growing popularity of cycling and particularly competitive cycling is linked to an increase in spinal trauma...
August 22, 2017: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
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