Articles tagged with Bicycles
Researchers introduced a new method to design bicycle parameters according to a rider's body dimensions, improving comfort and performance. The method uses a double-crank-and-rocker mechanism to calculate the ideal crank length and seat height for each rider.
Researchers at Saarland University developed a wireless bicycle brake that works with high reliability, enabling cyclists to react quickly in emergency situations. The system uses mathematical calculations and algorithms to ensure correct function and interaction of components.
The new GSA field guide covers a diverse range of geological topics in Minnesota and the surrounding region, including Precambrian geology, economic geology, and glacial geology. The guide features 25 field trips and provides best practices for educators conducting geology course field trips.
A new study by Niels van de Ven and colleagues found that people tend to overestimate the length of their outward journey, making the return journey feel shorter. The researchers believe this is due to prior expectations rather than familiarity with the route.
Bicycle balance relies on a mixture of physical effects linked to mass distribution, not gyroscopic or caster effects. Researchers built a riderless bike that balanced itself without these effects.
Researchers at TU Delft have discovered that a moving bicycle can remain stable without relying on traditional gyroscopic or caster effects. By analyzing the dynamics of bicycle motion, they found a new approach to achieve self-stability.
A new study by John L. Lastovicka and Nancy J. Sirianni reveals that consumers can form strong emotional bonds with their possessions, such as cars and firearms. The researchers found that love-smitten consumers are more likely to invest time and money into improving their prized possessions.
According to a study published in Archives of Internal Medicine, increased bicycle riding and brisk walking among premenopausal women were linked to reduced weight gain, particularly for those who are overweight or obese. The study found that even low levels of cycling, such as five minutes per day, can have significant health benefits.
A new study by Harvard T.H. Chan School of Public Health researchers found that premenopausal women who increase their bicycling or walking briskly daily decrease their risk of gaining weight. Overweight and obese women benefit most from these activities, with even small increases in cycling time helping to control weight.
A student at the University of Sheffield designed a mobile bicycle-powered water pump, called bicibomba movil, to improve irrigation and water distribution for rural residents in Guatemala. The machine can achieve a flow rate of 40 liters per minute on flat ground and has been produced in regular production since its creation.
Researchers at Fraunhofer-Gesellschaft have developed a functionally-integrated bicycle seat post made from carbon fiber composite materials, offering noticeable ride comfort and reduced weight. The innovative seat post uses laminated springs to absorb shocks, providing a smoother ride for cyclists.
A Henry Ford Health study found that increasing exercise parameters improves quality of life and reduces hospitalization and death risk in heart failure patients. Patients who exercised for 25 minutes at moderate intensity lowered their estimated risk by 10-25 percent.
Researchers in Taiwan have developed a computer algorithm that provides a gear-shifting sequence to optimize power output and maintain comfort while cycling. The system, tested on a 12-speed bicycle, minimizes power losses and gear shifts, allowing riders to pedal efficiently without fatigue.
A survey by the University of Texas at Austin found that bicyclists in Dallas, Houston and San Antonio are more concerned with vehicle crashes than others. The study also revealed that 70% of respondents consider biking to be very or somewhat dangerous due to traffic accidents, while only 21% fear crime-related incidents.
A new study by the University of Montreal found that only 30% of children attending elementary school in Quebec walk or bike to school. The primary obstacle is urban sprawl, with parents often driving their kids due to safety concerns, despite walking being crucial for daily energy expenditure.
The Center for Minority Health (CMH) at the University of Pittsburgh School of Public Health has developed innovative programs to improve the health and well-being of racial and ethnic minorities, including a prostate cancer prevention program that trains barbers to deliver accurate health information. The organization also partnered w...
Research reveals that as cycling participation increases, so do safety levels for both cyclists and motorists. Studies show a one-third drop in crash frequency with increasing cyclist numbers. Experts attribute this effect to changed driver behavior, not improved infrastructure or laws.
A study found that no-nose bicycle saddles reduce saddle contact pressure, improve penile tactile sensation, and enhance erectile function in bicycling police officers. The use of no-nose saddles also led to a significant decrease in genital numbness while cycling.
Regular cycling can cause genital numbness, erection problems and skin irritations in men. Choosing the right bike is essential to prevent these health issues, including ensuring proper saddle fit, pedal resistance and padding.
Researchers at Fraunhofer-Gesellschaft have developed intelligent bicycle pedals that track pedaling force and provide real-time feedback to cyclists. The integrated sensors and electronic components enable the system to optimize cycling performance and detect potential issues, such as material fatigue in aircraft parts.
Researchers at the University of Granada have developed a new system to diagnose pulmonary hypertension earlier. The system uses ultrasound technology and measures pulmonary artery systolic pressure, allowing doctors to identify the condition before it becomes irreversible.
A new national study found that bicycle-related injuries among children and adolescents result in nearly $200 million in hospital inpatient charges annually. The study also estimates that approximately 10,700 children are hospitalized annually for a bicycle-related injury, with an average length of stay of three days.
A RAND Corporation study found that adolescent Asian immigrants improved their preventive health behaviors, such as physical activity and nutrition, across generations. In contrast, Latino teens showed poorer or worsening habits over time, particularly in nutrition, which may contribute to high obesity rates among the Latino community.
A study by University of Bath researchers found that drivers pass closer to cyclists wearing helmets than those without, increasing the risk of a collision. The research suggests that drivers perceive cyclists with helmets as more experienced and predictable, leading them to leave less space.
Researchers investigated the link between bicycle riding and sexual health, finding that high pressures from saddle interface can temporarily occlude penile blood flow. Effective strategies based on ergonometrics and urogenital physiologic principles are needed to reduce risk of erectile dysfunction from cycling.
A new study uses virtual reality to safely study children's ability to cross busy roads, revealing that kids leave less time between themselves and oncoming cars than adults. The findings suggest mistakes in judging traffic gaps may be a significant risk factor in car/bicycle collisions.
A survey of fourth and fifth-grade pupils and their parents found significant discrepancies between reported and actual use of bike helmets and seatbelts. The study emphasizes the need for injury prevention programs targeting both parents and children to address these gaps and reduce child injuries.
A school-based safety program led to significant improvements in children's bike helmet use, with almost two-thirds wearing helmets on their most recent ride. The program, which included custom-fit helmets and classroom discussions, also reinforced the importance of proper helmet fit over style or color.
Children's Hospital researchers estimate national costs associated with bicycle handlebar-related injuries, which can result in lengthy hospital stays and long-term disability. The study recommends adopting safer designs and educating parents on choosing and maintaining bicycles to minimize the risk of such injuries.
A study published in the Journal of Applied Physiology found that ultra-long-distance runners experience a decline in maximal voluntary force capacity due to central fatigue, but also exhibit strengthened twitch mechanical responses and unaltered M-wave characteristics.
The study found a significant increase in bicycle helmet use from 36% to 84%, resulting in a decrease in head injuries among cyclists. However, another commentator suggests that legislation alone may not be sufficient to promote safe cycling and recommends combining it with other strategies such as bike paths.
A study published in Ambulatory Pediatrics reveals that playground injuries are more severe and common than previously thought, accounting for a significant proportion of emergency visits. The study found that children aged 5-9 years had the highest rates of emergency visits due to playground falls.
Researchers found that larger sprocket sizes and higher chain tension can significantly increase bicycle drive train efficiency, while lubrication has a minimal impact. The study's results could have implications for other chain-driven devices, including conveyor belts and factory production lines.
A study by Johns Hopkins Medicine found that alcohol was a factor in at least a third of fatal and non-fatal bicycle accidents. The researchers suggest that cycling safety programs including warnings against intoxication could reduce the estimated 60,000 alcohol-related cycling injuries annually.