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https://www.readbyqxmd.com/read/28227187/estimation-of-heart-rate-from-foot-worn-photoplethysmography-sensors-during-fast-bike-exercise
#1
Delaram Jarchi, Alexander J Casson, Delaram Jarchi, Alexander J Casson, Alexander J Casson, Delaram Jarchi
This paper presents a new method for estimating the average heart rate from a foot/ankle worn photoplethysmography (PPG) sensor during fast bike activity. Placing the PPG sensor on the lower half of the body allows more energy to be collected from energy harvesting in order to give a power autonomous sensor node, but comes at the cost of introducing significant motion interference into the PPG trace. We present a normalised least mean square adaptive filter and short-time Fourier transform based algorithm for estimating heart rate in the presence of this motion contamination...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226906/a-new-crank-arm-based-load-cell-with-built-in-conditioning-circuit-and-strain-gages-to-measure-the-components-of-the-force-applied-by-a-cyclist
#2
Andre V Pigatto, Karina O A Moura, Gabriela W Favieiro, Alexandre Balbinot, Andre V Pigatto, Karina O A Moura, Gabriela W Favieiro, Alexandre Balbinot, Karina O A Moura, Gabriela W Favieiro, Alexandre Balbinot, Andre V Pigatto
This report describes the development of a force platform based on instrumented load cells with built-in conditioning circuit and strain gages to measure and acquire the components of the force that is applied to the bike crank arm during pedaling in real conditions, and save them on a SD Card. To accomplish that, a complete new crank arm 3D solid model was developed in the SolidWorks, with dimensions equivalent to a commercial crank set and compatible with a conventional road bike, but with a compartment to support all the electronics necessary to measure 3 components of the force applied to the pedal during pedaling...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226263/comparing-impacts-between-formal-and-informal-recreational-trails
#3
Catherine Marina Pickering, Patrick Norman
Globally there are hundreds of thousands of kilometres of recreational trails traversing natural areas of high conservation value: but what are their impacts and do impacts differ among trails? We compared the effects of four common types of recreational trails [(1) narrow and (2) medium width informal bare earth trails and (3) gravel and (4) tarmac/concrete formal trails] on vegetation adjacent to trails in a high conservation value plant community that is popular for mountain biking and hiking in Australia...
February 19, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28223189/the-unrealised-potential-of-bike-share-schemes-to-influence-population-physical-activity-levels-a-narrative-review
#4
Adrian Bauman, Melanie Crane, Bradley Alan Drayton, Sylvia Titze
The recent proliferation of bike share schemes (BSS, also known as public bicycle use programs) in many cities has focused attention on their potential for reducing motorised traffic congestion, improving air quality and reducing car use. Since 2005, hundreds of bike share schemes have been implemented in many cities, with bike share usage patterns monitored in many of them. This paper assesses the development of BSS and provides a rationale for their potential health benefits. The key research question, as yet unanswered, is whether BSS themselves can contribute to improving population health, particularly through increasing population cycling, which would increase population levels of health-enhancing physical activity...
February 18, 2017: Preventive Medicine
https://www.readbyqxmd.com/read/28215821/holistic-versus-feature-based-binding-in-the-medial-temporal-lobe
#5
Rebecca N van den Honert, Gregory McCarthy, Marcia K Johnson
A central question for cognitive neuroscience is how feature-combinations that give rise to episodic/source memories are encoded in the brain. Although there is much evidence that the hippocampus (HIP) is involved in feature binding, and some evidence that other brain regions are as well, there is relatively little evidence about the nature of the resulting representations in different brain regions. We used multivoxel pattern analysis (MVPA) to investigate how feature combinations might be represented, contrasting two possibilities, feature-based versus holistic...
January 23, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28212075/towards-photoplethysmography-based-estimation-of-instantaneous-heart-rate-during-physical-activity
#6
Delaram Jarchi, Alex Casson
OBJECTIVE: Recently numerous methods have been proposed for estimating average heart rate using photoplethysmography (PPG) during physical activity, overcoming the significant interference that motion causes in PPG traces. We propose a new algorithm framework for extracting instantaneous heart rate from wearable PPG and ECG signals to provide an estimate of heart rate variability during exercise. METHODS: For ECG signals we propose a new spectral masking approach which modifies a particle filter tracking algorithm, and for PPG signals constrains the instantaneous frequency obtained from the Hilbert transform to a region of interest around a candidate heart rate measure...
February 13, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28194119/aesthetic-pleasure-versus-aesthetic-interest-the-two-routes-to-aesthetic-liking
#7
Laura K M Graf, Jan R Landwehr
Although existing research has established that aesthetic pleasure and aesthetic interest are two distinct positive aesthetic responses, empirical research on aesthetic preferences usually considers only aesthetic liking to capture participants' aesthetic response. This causes some fundamental contradictions in the literature; some studies find a positive relationship between easy-to-process stimulus characteristics and aesthetic liking, while others suggest a negative relationship. The present research addresses these empirical contradictions by investigating the dual character of aesthetic liking as manifested in both the pleasure and interest components...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28186443/highly-increased-troponin-i-levels-following-high-intensity-endurance-cycling-may-detect-subclinical-coronary-artery-disease-in-presumably-healthy-leisure-sport-cyclists-the-north-sea-race-endurance-exercise-study-needed-2013
#8
Øyvind Skadberg, Øyunn Kleiven, Magnus Bjørkavoll-Bergseth, Tor Melberg, Rolf Bergseth, Jone Selvåg, Bjørn Auestad, Ole J Greve, Kenneth Dickstein, Torbjørn Aarsland, Stein Ørn
Background Circulating cardiac troponin levels increase following prolonged intense physical exercise. The aim of this study was to identify participants with highly elevated cardiac troponins after prolonged, high intensity exercise, and to evaluate these for subclinical coronary artery disease. Methods and results Ninety-seven recreational cyclists without known cardiovascular disease or diabetes, participating in a 91 km mountain bike race were included, 74 (76%) were males, age: 43 ± 10 years, race duration: 4...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28179003/respiratory-outcomes-of-ultrafine-particulate-matter-ufpm-as-a-surrogate-measure-of-near-roadway-exposures-among-bicyclists
#9
Hye-Youn Park, Susan Gilbreath, Edward Barakatt
BACKGROUND: Studies have shown a consistent association between exposure to traffic-related air pollution and adverse health effects. In particular, exposure can be high for cyclists who travel near roadways. The objective of the current study was to examine the relationship between short-term exposure of near-road traffic emissions and acute changes in lung function among individuals who frequently bike in the Sacramento and Davis areas in California. Ultrafine particulate matter (UFPM) was used as a surrogate for near-roadway exposure in this study since the main source of this pollutant is from motor vehicle exhaust...
February 8, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28177737/peak-oxygen-uptake-in-a-sprint-interval-testing-protocol-vs-maximal-oxygen-uptake-in-an-incremental-testing-protocol-and-their-relationship-with-cross-country-mountain-biking-performance
#10
Rafał Hebisz, Paulina Hebisz, Marek Zatoń, Kamil Michalik
The literature finds that the exercise capacity of cyclists is typically assessed using incremental and endurance exercise tests. The aim of the present study was to confirm whether peak oxygen uptake (VO2peak) attained in a sprint interval testing protocol correlated with cycling performance and whether it corresponds to maximal oxygen uptake (VO2max) determined by an incremental testing protocol. A sample of 28 trained mountain bike cyclists executed three performance tests: a) incremental testing protocol (ITP) in which the participant cycled to volitional exhaustion, b) sprint interval testing protocol (SITP) composed of four 30-s maximal intensity cycling bouts interspersed with 90-s recovery periods, c) competition in a simulated MTB race...
December 12, 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28177582/treatment-of-mandibular-condyle-fractures-a-twenty-years-review
#11
Marcelo Silva Monnazzi, Marisa Ap Cabrini Gabrielli, Mário Francisco Real Gabrielli, Alexandre Elias Trivellato
BACKGROUND/AIM: The condylar fracture is among the most frequent facial fractures. Despite all the published studies, its treatment remains controversial. The aim of this retrospective study was to evaluate the epidemiology and complications of mandibular condyle fractures managed by surgical and conservative treatment, over a period of twenty years. MATERIAL AND METHODS: The files of 262 patients with 318 condyle fractures were included in this study. One hundred and seven patients had conservative management and 155 had surgical management for the condylar fractures...
February 8, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28174540/the-influence-of-mid-event-deception-on-psychophysiological-status-and-pacing-can-persist-across-consecutive-disciplines-and-enhance-self-paced-multi-modal-endurance-performance
#12
Daniel Taylor, Mark F Smith
Purpose: To examine the effects of deceptively aggressive bike pacing on performance, pacing, and associated physiological and perceptual responses during simulated sprint-distance triathlon. Methods: Ten non-elite, competitive male triathletes completed three simulated sprint-distance triathlons (0.75 km swim, 500 kJ bike, 5 km run), the first of which established personal best "baseline" performance (BL). During the remaining two trials athletes maintained a cycling power output 5% greater than BL, before completing the run as quickly as possible...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28169561/bike-desks-in-the-classroom-energy-expenditure-physical-health-cognitive-performance-brain-functioning-and-academic-performance
#13
Tine Torbeyns, Bas de Geus, Stephen Bailey, Lieselot Decroix, Jeroen Van Cutsem, Kevin De Pauw, Romain Meeusen
BACKGROUND: Physical activity is positively associated with physical health, cognitive performance, brain functioning and academic performance. The aim of this study is to investigate the influence of bike desks in the classroom on adolescents' energy expenditure, physical health, cognitive performance, brain functioning and academic performance. METHODS: Forty-four adolescents were randomly assigned to control (CG) or intervention group (IG). During five months, the IG used a bike desk for four class hours/week...
February 7, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28166871/utilizing-anthropometric-data-to-improve-the-usability-of-desk-bikes-and-influence-of-desk-bikes-on-reading-and-typing-performance
#14
Jay Cho, Andris Freivalds, Liza S Rovniak
This study investigated the feasibility of using a desk bike in an office setting. Workstation measurements were introduced to accommodate 95% of the general U.S. population in using desk bikes. Reading and typing performances were compared at three different cycling conditions (no cycling, 10 and 25 W). Thirty healthy individuals (15 female and 15 male; Age mean: 23.1, σ: 4.19) were recruited based on 5/50/95th percentile stature. Participants were required to select preferred workstation settings and perform reading and typing tasks while pedaling...
April 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28166412/the-casualties-from-electric-bike-and-motorized-scooter-road-accidents
#15
Maya Siman-Tov, Irina Radomislensky, Israel Trauma Group, Kobi Peleg
OBJECTIVE: The objective of this study was to describe demographic and injury characteristics of hospitalized injured patients involved in e-bike and motorized scooter accidents at a national level in Israel divided by different road user groups: riders and pedestrians. METHODS: This was a retrospective study based on data from the National Trauma Registry, between January 1, 2013, and December 31, 2015. All hospitalized casualties due to the involvement of an e-bike or motorized scooter were included...
April 3, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28155797/-regular-bike-use-in-nantes-a-combined-health-and-mobility-approach
#16
Marion Gassiot, Fabrice Guyard, Hadrien Bedok, Zoë Héritage, Céline Hemery, Patricia Saraux-Salaün
<ce:para>The health benefits of regular physical activity have now been clearly established. Two initiatives developed in Nantes allowed estimation of the benefits as perceived by local authorities as well as the motivations of cyclists and the general population. The City Council and the metropolitan area of Greater Nantes used the HEAT tool, which identifies the economic health benefit of increasing active forms of transport at the population level. The number of deaths avoided and the economic benefits were calculated by using both current and 2030-projected cycling rates and mortality rates...
June 8, 2016: Santé Publique: Revue Multidisciplinaire Pour la Recherche et L'action
https://www.readbyqxmd.com/read/28118864/alcohol-consumption-and-cycling-in-contrast-to-driving
#17
Carmen Hagemeister, Markus Kronmaier
In Germany, the legal blood alcohol limit for cyclists is much higher (0.16 percent) than the limit for drivers (0.05 percent) - as long as no crash has occurred. The proportion of police-recorded crashes with personal damage under the influence is higher for cyclists than drivers, and the blood alcohol concentrations are higher for cyclists than drivers. 63 women and 204 men who drive a car and use a bike and drink alcohol participated in the online study. In the sample, cycling under the influence (CUI) was more frequent and was observed more frequently among friends than driving under the influence (DUI)...
January 21, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28116943/dental-trauma-and-bicycle-safety-a-report-in-italian-children-and-adolescents
#18
Francesca Amadori, Elena Bardellini, Alessandro Copeta, Giulio Conti, Valerio Villa, Alessandra Majorana
OBJECTIVES: This retrospective study aims to analyze the pattern of oro-facial trauma from bicycle accidents in Italian children and adolescents, focusing on the safety devices used. METHODS: The medical records of 1405 patients of the Dental Clinic of the University of Brescia, between the age of 0 to 18, who experienced a dento-facial trauma from the use of a bicycle, were analyzed. Data regarding age, gender, weight, height, dominant hand, type of bicycle, use of safety devices, location and type of dental trauma, teeth involved, bone fractures and soft tissue lesions were recorded...
January 24, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28111623/bilateral-simultaneous-traumatic-thumb-injuries-extensor-pollicis-longus-rupture-on-one-side-and-ulnar-collateral-ligament-on-the-other-case-report
#19
Sarang Kasture, Raj Sakamuri
INTRODUCTION: Though isolated traumatic extensor pollicislongus rupture and ulnar collateral ligament rupture of the metacarpophalangeal joint of the thumb are well known injuries, it is rare to have simultaneous bilateral thumb injuries from a single traumatic event. In this article, we report simultaneous bilateral traumatic thumb injury with extensor pollicislongus tendon rupture on one side and ulnar collateral ligament tear on the other side. To the best of our knowledge, such injury has never been reported in the English literature...
April 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28103737/a-multidimensional-approach-to-performance-prediction-in-olympic-distance-cross-country-mountain-bikers
#20
Andrew R Novak, Kyle J M Bennett, Job Fransen, Ben J Dascombe
This study adopted a multidimensional approach to performance prediction within Olympic distance cross-country mountain biking (XCO-MTB). Twelve competitive XCO-MTB cyclists (VO2max 60.8 ± 6.7 ml · kg(-1)( )· min(-1)) completed an incremental cycling test, maximal hand grip strength test, cycling power profile (maximal efforts lasting 6-600 s), decision-making test and an individual XCO-MTB time-trial (34.25 km). A hierarchical approach using multiple linear regression analyses was used to develop predictive models of performance across 10 circuit subsections and the total time-trial...
January 20, 2017: Journal of Sports Sciences
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