In lacrosse, players battle to catch and then throw the ball with a stick, so having the best stick equipment is important. The ball is caught and thrown from a pocket on the end of the stick. According to Laxmania, most of these pockets are made...
The Shimano Dura-Ace crank system is an external bearing crank system for bicycles. While traditional bearing sets consist of a separate bearing that sits within the bottom bracket, the Shimano Dura-Ace crank integrates the bearings, crank and...
The world of bicycle riding has taken a leap closer to the ease of driving an automatic automobile. The company Shimano has introduced the electronic derailleur. At the push of a button, the electronics automatically shift the gears and perfectly...
Cannondale M300 road and mountain bikes were first introduced in 1993 and continued in production through 2000. Early models had noticeably large tubes that were indicative of most nonsuspension hard-tail frames. Hybrid models born of the M300...
Shimano first introduced Dura-Ace 600 group sets in the 1983 as an alternative to more expensive recreational bicycle accessories. Components included derailleurs, side pull brakes and gear sets. Affordable pricing resulted in a degree of...
As asserted by MayoClinic.com, back pain is one the most common neurological disorder in the United States, second only to headache. Many conditions cause compression of the sensory nerves in the spine's bony canal, and this results in a variable...
According to the National Institute of Health, a spinal disc is a sponge-like disc found between each vertebra that acts as a shock absorber. It also helps to prevent spine injury and stabilize proper spine alignment. A herniated disc occurs when...
Chiari malformation refers to a condition in which the brain doesn't fit into the back part of the skull and so gets squeezed down into the top part of the spinal canal. Some people don't have symptoms, but others experience headaches and other...
Cervical radiculopathy is the radiation of neck pain to certain parts of the upper body. Certain conditions, such as a herniated disk, spinal stenosis or osteoarthritis, can compress a spinal nerve as it exits the spinal column. Medline Plus, of...
While disc brakes have evolved into the most powerful and precise bicycle brakes today, rim brakes -- especially linear pull brakes -- are still the preferred brake for touring, according to Larry Diskin of the Adventure Cycling Association....
Shimano produces mountain bike, or MTB, gear sets in the Dura-Ace and Deore XT lines that provide up to 27 gear ratios. Many consider Deore XT gear sets to be the more superior in terms of durability and performance. Critical components of Shimano...
A laminotomy is a procedure sometimes used to treat a herniated disc in the spine. The intervertebral discs are small, cylindrical discs in between each vertebra of the spine that serve as shock absorbers for the spine. A herniated disc results...
Shimano has been manufacturing specialized bike parts since the early 1920s. They create lightweight components that permit you to customize your mountain, road or BMX bike. According to Shimano, the company strives to increase the enjoyability of...
Many road bicycles were introduced into the market in 2008. Industry magazines tested the various models, comparing new technologies, value, performance and costs. If you plan on purchasing a 2008 road bicycle, beware that you might end up with a...
The most common cause of death for Americans less than 45 years old is trauma, according to Dr. Thomas Kirsch, director of emergency medicine at Chandler Regional Hospital in "Tintinalli's Emergency Medicine." Approximately 33 percent of these...
Shimano produces three major component brands for bicycles: Dura-Ace, Ultegra and 105. Each brand offers different features; Dura-Ace is the least expensive and Ultegra is the more performance oriented and more expensive brand. While the...
Bicycle racing requires skill, determination and a little luck. To win races, however, you need a top-flight bike. While most riders can get by with less than the best, winning racers know that a featherlight frame, bulletproof components and a...
The brain is covered by layers of membranes, known collectively as meninges, which function to protect the central nervous system and regulate the fluid pressure within the skull. There are three layers of meninges: the inner pia mater, the...
Injuries to the head may cause damage to the skull itself, the brain and facial bones. Head injuries can be described as either blunt injuries or penetrating injuries. Blunt injuries are associated with acceleration or deceleration mechanisms....
Microdiscectomy is an operation whereby a small part of a herniated disc is removed to relieve the compression effects. The UCLA Comprehensive Spine Information Center explains that a microdiscectomy procedure is less invasive than a traditional...
Compatibility is the effective performance of particular components when interacting with other components. Shimano offers derailleur compatibility information through interchangeability charts. The charts are configured so that installing a...
A triathlon bike is the most expensive and the most important piece of equipment a triathlete owns. With the bike portion of the course offering the most time savings in a race, it is critical that triathletes choose the best bike for their budget...
Front shifters for bikes come in two types: index shifters and lever shifters. You operate an index shifter by twisting a selector knob. Indicative of the name, lever shifters operate using a lever that you can position at a convenient angle on...
Upgrading your Shimano gear components from a nine-speed to a 10-speed crank requires the Shimano HG-94 chain, part of the Shimano HyperGlide chain series. The HG-94's narrow design can accommodate the 10-speed crank's large gear clusters. All...
