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https://www.readbyqxmd.com/read/29136559/determinants-of-pedestrian-and-bicyclist-crash-severity-by-party-at-fault-in-san-francisco-ca
#1
Deborah Salon, Andrew McIntyre
Pedestrian and bicyclist safety is of growing concern, especially given the increasing numbers of urban residents choosing to walk and bike. Sharing the roads with automobiles, these road users are particularly vulnerable. An intuitive conceptual model is proposed of the determinants of injury severity in crashes between vehicles and nonmotorized road users. Using 10 years of crash data from San Francisco, CA, we estimate logistic regression models to illuminate key determinants of crash severity for both pedestrian and bicyclist collisions...
November 11, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/29116831/clinician-friendly-physical-performance-tests-for-the-knee
#2
Jerrod J Harrison, Marissa K Yorgey, Alexander J Csiernik, Joseph H Vogler, Kenneth E Games
Reference:  Hegedus EJ, McDonough S, Bleakley C, Cook CE, Baxter GD. Clinician-friendly lower extremity physical performance measures in athletes: a systematic review of measurement properties and correlation with injury. Part 1: the tests for knee function including the hop tests. Br J Sports Med. 2015;49(10):642-648. CLINICAL QUESTION:   Do individual physical performance tests (PPTs) used as measures for lower extremity function have any relationship to injuries in athletes aged 12 years or older? DATA SOURCES:   Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines were used to locate articles...
November 8, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29095201/effect-of-e-bike-versus-bike-commuting-on-cardiorespiratory-fitness-in-overweight-adults-a-4-week-randomized-pilot-study
#3
Christoph Höchsmann, Steffen Meister, Damiana Gehrig, Elisa Gordon, Yanlei Li, Monique Nussbaumer, Anja Rossmeissl, Juliane Schäfer, Henner Hanssen, Arno Schmidt-Trucksäss
OBJECTIVE: To assess if active commuting with an electrically assisted bicycle (e-bike) during a 4-week period can induce increases in cardiorespiratory fitness measured as peak oxygen uptake (V[Combining Dot Above]O2peak) in untrained, overweight individuals, and if these changes are comparable with those induced by a conventional bicycle. DESIGN: Four-week randomized pilot study. SETTING: Controlled laboratory. PARTICIPANTS: Thirty-two volunteers (28 men) participated...
June 29, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29061144/an-evaluation-of-transport-mode-shift-policies-on-transport-related-physical-activity-through-simulations-based-on-random-forests
#4
Ruben Brondeel, Yan Kestens, Basile Chaix
BACKGROUND: Physical inactivity is widely recognized as one of the leading causes of mortality, and transport accounts for a large part of people's daily physical activity. This study develops a simulation approach to evaluate the impact of the Ile-de-France Urban Mobility Plan (2010-2020) on physical activity, under the hypothesis that the intended transport mode shifts are realized. METHODS: Based on the Global Transport Survey (2010, n = 21,332) and on the RECORD GPS Study (2012-2013, n = 229) from the French capital region of Paris (Ile-de-France), a simulation method was designed and tested...
October 23, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28993707/effects-of-active-commuting-and-leisure-time-exercise-on-fat-loss-in-women-and-men-with-overweight-and-obesity-a-randomized-controlled-trial
#5
J S Quist, M Rosenkilde, M B Petersen, A S Gram, A Sjödin, B Stallknecht
BACKGROUND: Aerobic exercise is recommended for weight management but energy balance is often less negative than predicted from exercise energy expenditure (ExEE). OBJECTIVE: To examine effects of active commuting and leisure-time exercise on fat loss in women and men with overweight and obesity. METHODS: We randomized 130 younger, physically inactive women and men with overweight and obesity (body mass index: 25-35 kg/m(2)) to 6 months of habitual lifestyle (CON, n=18), active commuting (BIKE, n=35), or leisure-time exercise of moderate (MOD, 50% VO2peak reserve, n=39) or vigorous intensity (VIG, 70% VO2peak reserve, n=38)...
October 10, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28953091/the-effects-of-exercise-fatigue-on-prefrontal-and-motor-activations-as-measured-by-near-infrared-spectroscopy
#6
Jun Wu, Tao Liu, Jianpeng Huang, Wenmin Han
This study aimed to examine the effects of active task-related fatigue induced by maximal exercise on human cognitive and motor systems. To achieve the goal, we measured participants' activation changes in their prefrontal and motor cortices while performing an incremental cycling task using near-infrared spectroscopy (NIRS). The participant's task was to ride a test bike to maximal exertion twice within 2 days in a low-load and a high-load condition, respectively. The behavioral data showed longer cycling time in the low-load condition than that in the high-load condition...
December 6, 2017: Neuroreport
https://www.readbyqxmd.com/read/28900350/influence-of-physical-activity-and-interest-for-food-and-sciences-versus-weight-disorders-in-children-aged-8-to-18-years
#7
REVIEW
A Faik, E Vanderhulst, I Rossem, D Devroey
INTRODUCTION: Being overweight and obesity are a growing problem and are often related to a lack of physical activity among younger people. This study aims to describe the prevalence of weight disorders in Belgian schoolchildren. Secondly, this study examines the association between physical activity, weight disorders and the interest in food and sciences. METHODS: We examined 525 children aged between 8 and 18 years old, who attended the Brussels Food Fair or the Belgian Science Day in 2013...
June 2017: Journal of Preventive Medicine and Hygiene
https://www.readbyqxmd.com/read/28882076/assessing-health-promotion-interventions-limitations-of-traditional-research-methods-in-community-based-studies
#8
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/28871893/metabolism-and-whole-body-fat-oxidation-following-post-exercise-carbohydrate-or-protein-intake
#9
Ulrika Andersson Hall, Stefan Pettersson, Fredrik Edin, Anders Pedersen, Daniel Malmodin, Klavs Madsen
PURPOSE: This study investigated how post-exercise intake of placebo (PLA), protein (PRO) or carbohydrate (CHO) affected fat oxidation (FO) and metabolic parameters during recovery and subsequent exercise. METHODS: In a cross-over design, 12 moderately trained women (VO2max 45 ± 6 ml·min(-1)·kg(-1)) performed three days of testing. A 23 min control (CON) incremental FO bike test (30-80% VO2max) was followed by 60 min exercise at 75% VO2max. Immediately post-exercise, subjects ingested PLA, 20 g PRO or 40 g CHO followed by a second FO bike test 2h later...
September 5, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28813918/how-to-prepare-a-person-with-complete-spinal-cord-injury-to-use-surface-electrodes-for-fes-trike-cycling
#10
Raymond K Y Tong, Xiaojun Wang, Kenry W C Leung, Ginny T Y Lee, Cathy C Y Lau, H W Wai, Peter M K Pang, H C Leung
Functional Electrical Stimulation (FES) cycling could benefit people with Spinal Cord Injury (SCI). The FES cycling involves large muscle groups during the training, and thus improves the cardiovascular function, increases the muscle bulk and reduces the secondary complications. This study developed an outdoor FES exercise cycling system for complete SCI persons to exercise their lower limbs without putting extra load on upper extremities. The mechanical structure of the cycling system was specially redesigned to secure the SCI persons in the cycling system...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28803119/the-effects-of-low-intensity-cycling-on-cognitive-performance-following-sleep-deprivation
#11
Alexis B Slutsky, Jed A Diekfuss, James A Janssen, Nate T Berry, Chia-Hao Shih, Louisa D Raisbeck, Laurie Wideman, Jennifer L Etnier
This study examined the effect of 24h of sleep deprivation on cognitive performance and assessed the effect of acute exercise on cognitive performance following sleep deprivation. Young, active, healthy adults (n=24, 14 males) were randomized to control (age=24.7±3.7years, BMI=27.2±7.0) or exercise (age=25.3±3.3years, BMI=25.6±5.1) groups. Cognitive testing included a 5-min psychomotor vigilance task (PVT), three memory tasks with increasing cognitive load, and performance of the PVT a second time. On morning one, cognitive testing followed a typical night's sleep...
August 9, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28715263/acute-effect-of-virtual-reality-exercise-bike-games-on-college-students-physiological-and-psychological-outcomes
#12
Nan Zeng, Zachary Pope, Zan Gao
Commercially available virtual reality (VR) exercise systems are extensively used in many health domains among clinical populations. However, evidence regarding the efficacy of this technology on healthy adults' health-related outcomes is unknown. This pilot study compared physiological and psychological responses following exercise on a VR-based exercise bike (VirZoom) and traditional stationary exercise bike. Twelve healthy college students (9 females; Mage = 25.01, SD = ± 4.74; MBMI = 22.84, SD = ± 3...
July 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/28696134/arterial-stiffness-is-associated-to-cardiorespiratory-fitness-and-body-mass-index-in-young-swedish-adults-the-lifestyle-biomarkers-and-atherosclerosis-study
#13
Ulrika Fernberg, Maria Fernström, Anita Hurtig-Wennlöf
Background Early changes in the large muscular arteries are already associated with risk factors as hypertension and obesity in adolescence and young adulthood. The present study examines the association between arterial stiffness measurements, pulse wave velocity and augmentation index and lifestyle-related factors, body composition and cardiorespiratory fitness, in young, healthy, Swedish adults. Design This study used a population-based cross-sectional sample. Methods The 834 participants in the study were self-reported healthy, non-smoking, age 18-25 years...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28671853/physiological-and-anthropometric-characteristics-of-top-level-youth-cross-country-cyclists
#14
Alessandro Fornasiero, Aldo Savoldelli, Roberto Modena, Gennaro Boccia, Barbara Pellegrini, Federico Schena
In the literature there is a lack of data about the development of top level athletes in cross-country mountain biking (XCO). The purpose of this study was to analyze anthropometric and physiological characteristics of some of the best XCO bikers aged between 13 and 16. The study involved 45 bikers (26 males and 19 females) belonging to a youth national team. The evaluations, consisting of anthropometric measures, incremental cycling tests (VO2max, PPO, P@RCP), and 30 s Wingate Tests (PMax, PMean), were conducted over a lapse of 4 years...
July 3, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28632064/the-effectiveness-of-front-fork-systems-at-damping-accelerations-during-isolated-aspects-specific-to-cross-country-mountain-biking
#15
Paul W Macdermid, Matthew C Miller, Philip W Fink, Stephen R Stannard
Cross-country mountain bike suspension reportedly enhances comfort and performance through reduced vibration and impact exposure. This study analysed the effectiveness of three different front fork systems at damping accelerations during the crossing of three isolated obstacles (stairs, drop, and root). One participant completed three trials on six separate occasions in a randomised order using rigid, air-sprung, and carbon leaf-sprung forks. Performance was determined by time to cross obstacles, while triaxial accelerometers quantified impact exposure and damping response...
November 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28605210/pacing-strategy-during-simulated-mountain-bike-racing
#16
Bruno Ferreira Viana, Flávio Oliveira Pires, Allan Inoue, Tony Meireles Santos
Cross-country mountain biking (XCO) is a popular high-intensity cycling endurance event, however, XCO pacing strategy has not been fully examined. This study examined the pacing strategies of different XCO athletes, during a laboratory-simulated XCO performance test. Brazilian cyclists classified as performance cohort level three (PL3-trained) performed an XCO race simulation. The simulation consisted of four 10 km laps with a gradient of 0-10%. No group vs. time interaction was found in lap time (P = 0.169), absolute (P = 0...
June 12, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28554739/that-s-how-you-do-it-generic-you-expresses-norms-during-early-childhood
#17
Ariana Orvell, Ethan Kross, Susan A Gelman
Prior research indicates that children construe norms as general and construe preferences as individual. The current studies tested whether this expectation is built into how children interpret and use language. We focused on the pronoun you, which is ambiguous between a canonical interpretation (referring to the addressee) and a generic interpretation (referring to people in general). In Study 1, children (N=132, ages 3-10years) were asked a series of questions containing "you," referring to either descriptive norms (e...
January 2018: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28542333/it-takes-biking-to-learn-physical-activity-improves-learning-a-second-language
#18
Fengqin Liu, Simone Sulpizio, Suchada Kornpetpanee, Remo Job
Recent studies have shown that concurrent physical activity enhances learning a completely unfamiliar L2 vocabulary as compared to learning it in a static condition. In this paper we report a study whose aim is twofold: to test for possible positive effects of physical activity when L2 learning has already reached some level of proficiency, and to test whether the assumed better performance when engaged in physical activity is limited to the linguistic level probed at training (i.e. L2 vocabulary tested by means of a Word-Picture Verification task), or whether it extends also to the sentence level (which was tested by means of a Sentence Semantic Judgment Task)...
2017: PloS One
https://www.readbyqxmd.com/read/28536499/decreasing-sedentary-behavior-effects-on-academic-performance-meta-cognition-and-sleep
#19
June J Pilcher, Drew M Morris, Stewart A Bryant, Paul A Merritt, Hayley B Feigl
There is growing interest in using activity workstations as a method of increasing light physical activity in normally sedentary environments. The current study (N = 117) compared the effects of studying in college students while slowly pedaling a stationary bike with a desktop with studying at traditional desks across 10 weeks in an academic semester. The students were assigned to study either on the stationary bike or at a traditional desk located in the campus library for a minimum of 2 h a week. During the 10 weeks, the students studied for tests or worked on other required academic activities while working at their assigned desk...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28533619/the-effects-of-exercise-using-an-ergometer-with-swaying-saddle-on-chronic-lower-back-pain
#20
Seung Jin Byeon, Ki Hyun Kim
[Purpose] This study aims to investigate the effects of exercise using an ergometer with swaying saddle on chronic lower back pain. [Subjects and Methods] Thirty-three normal adults (university students) with chronic lower back pain were randomly recruited. The flexibility and strength of muscles were measured before and after an 8-week intervention. Belly-bike, an ergometer with a swaying saddle, was used. The duration of intervention was 30 minutes a day, 3 times a week. To measure the level of pain, visual analogue scale (VAS) and Korean Oswestry Disability Index were used...
April 2017: Journal of Physical Therapy Science
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