Showing posts with label running speed. Show all posts
Showing posts with label running speed. Show all posts

Friday, March 01, 2013

The world is full of motor sports enthusiasts racers; detailers; and car preparation geeks whose central joy is the creation and performance of surprising machines. There's a lot of colour and power in these quite focused worlds, all of which have their own shorthand and their own special vehicles. Places like Demon Tweeks (and this is not the only one, by far), which supply the materials and the knowhow to serve the race enthusiasts, exist at the heart of the hobbyist's world.

To understand the products provided by the hobbyist centres, you first have to understand something about the world in which they exist. There are two core concepts at the heart of the racing world: speed and safety.

Speed is the ultimate goal of all racing preparation. It is, in itself, served by a nested set of sub-concepts all goals that the detailer or tuner wishes to achieve in order to serve the overall prize of attaining greater speeds without sacrificing safety. Performance, for example, which is a word you'll hear flying around the pits and garages a lot, is not simply defined as "going faster than everything else". To perform well, a vehicle must be nimble around corners without sacrificing too much forward motion in the process. It must be able to achieve high speeds quickly without losing handling ability.

To achieve good performance, the tuner looks not just at the power developed by the engine, but the ability of the suspension to deal with that power as it is pushed out through turning wheels. As a rapidly moving vehicle changes direction, the bite of the wheels on the racing surface is compromised by the sudden intrusion of lateral and twisting forces which, where rigid suspension is concerned, can be translated into fishtailing and bellying. Modern suspension, then, must be introduced to take more individual control of each wheel effectively allowing the car or bike to cope with changes in directional force as well as changes in the actual architecture of the road beneath.

There's a fine line the tuner and detailer must tread, between weight and power. The lighter a vehicle is, the faster it goes: but then the more powerful it is, the harder it becomes to control without weight sitting over the wheels. The goal is to find the perfect medium between stripping out extra weight and adding more power, so the car or bike may be controlled by an expert without shaving active horsepower out of its performance. "Active horsepower" may be thought of as the amount of power developed by the engine that actively increases the speed of the vehicle, rather than simply allowing the wheels to move the weight of its body.

The second major element of vehicle tuning safety is present throughout all of these considerations. To make a vehicle lighter, for example, a person may also make it much less structurally safe particularly where the major weight elements in the chassis and frame are those installed to keep the driver safe.

To properly tune a car for racing, then, it is necessary to replace key bits of the body with lighter but stronger materials. Carbon is often used for this purpose. Its structural integrity makes it much more robust than metal. Yet it is also much lighter, allowing the vehicle to develop more power and performance.

About Author:
Henry Walker is an amateur racing enthusiast. He has looked at demon tweeks in a recent article for a trade magazine.

Tuesday, February 05, 2013

There are three major classification of how a runner's foot strikes the ground:

Heel Striking
Heel lands first, then the forefoot comes down (heel-toe running)

Midfoot Striking
Heel and ball of the foot land simultaneously

Forefoot Striking
Ball of the foot lands first (usually below the 4th and 5th metatarsals) before the heel comes down (toe-heel-toe running

"Approximately 75% of habitually shod runners all over the world heel strike (Hasegawa et al., 2007)."

Running injuries
Studies suggest that at least 30% of runners get injured every year, and many of these injuries stem from problems that arise in the foot or lower leg (va Gent et al., 2007).

Bere Foot for Long Running
The bare foot may be well suited for running long distance without requiring modern, heavily cushioned, high-heeled running shoes.

Running Shoes vs. Bare Foot
Most runners who wear standard running shoes usually heel strike, but our research suggests that most barefoot or minimally shoe endurance runners barefoot and sometime midfoot strike.

History of Running
Human and our recent ancestors have been accomplished endurance runners for more than a million years (Bramble and Lieberman, 2004).

Minimal Footware
Humans evolved to run and before the mid 1970s all humans ran in either no shoes or very minimal footwear such as sandals, moccasins or thin running flats.

Safely Foot Landing
Humans were able to run comfortably and safely when barefoot or in minimal footwear by landing with a flat foot (midfoot strike) or by landing on the ball of the foot before bringing down the heel (barefoot strike).

Is a study gathered and illustrated By Altrazerodrop.com about the advantages of barefoot running.

Sunday, January 27, 2013

Racing well requires plenty of training and preparation. However, a case of the jitters can jeopardize your run, as can preparing the wrong way. Read on to find out some helpful tips to improve your races and stay safe.

Pick Smart Pre-Race Food
According to Active.com, "a runner's carbohydrate intake should increase to 70 to 80 percent of his/her total daily caloric intake." Try to avoid eating protein and fat, and eat food with a high-glycemic index that is easy to digest. The reason for this is, eating a meal with high GI allows for carbohydrates to get into your bloodstream faster. You should eat about four hours before the race, so that way your body can store the energy without burning it all before the race.

Plan Your Training
You'll have to pick a training plan before your race. The plan you pick will vary depending on how much you want to train, the length of the race, and how intense the workouts will be. Unfortunately, it can take casual runners weeks to months before their distance running improves. You can find some great training programs at Runners World.

Stay Hydrated and Use Water Stops
On the days leading up to your race, you will want to hydrate your body plenty. By drinking around 8 glasses of water a day, you will minimize the risk of dehydration and related injuries. On the day of the race, try to avoid drinking at the first stop, because it will be the most crowded. If the race is providing sports drinks, find out and train with it.

Don't Overdress
Make sure not to overdress, because running will heat up your body. By overdressing, you risk dehydration and overheating, both of which can lead to fainting on the track. Be sure to prepare all of your clothes the night before the race, so you don't forget any in the frenzy leading up to running.

Warm Up
The warm-up is as important as the race. However, that doesn't mean the warm-up should be intense. Your warm-up should involve dynamic movements and stretches. Walking and jogging is an ideal warm-up for a race, because you want to be energized and not tired.

Arrive Early
Try to arrive early so you can sign-in, get your bib, and start warming up. Providing yourself enough time before the race to participate in the pre-race activities can help reduce nervousness and jitters. Be warned though, giving yourself too much time to relax can lead to a cool down (and more nervousness.)

Keep Moving
Staying at a constant throughout the whole race will help you much more than fast sprints with long break times. You may want to use bursts of speed every once in a while, but never completely stop moving or you may get tired and not pick up pace again.

Use A Mantra
While some may find it ridiculous, many runners have said repeating a motivational mantra has helped them cross the finish line. Finding a mantra that speaks true and motivates you can be tricky though. Brian Sell, 2008 U.S. Olympic Marathoner, says that "My favorite saying is 'Do or do not; there is no try.' It's from Star Wars"

Use Other Runners
Using other runners as references can help you stay in the game. Try to pick a goal (a runner), and keep pace with them. Switching between farther and farther goals will keep you steady and ahead until you find a comfortable position.

Bring Support
Bringing family and friends to see you run is a great way to motivate yourself into staying in the race. It's one of the things that makes running such a rewarding experience.

Practice and preparation are essential to having a good race. Make sure to stay hydrated, eat well, and train. Good luck!

About the author: Kennith Campbell blogs for ultraslide.com. Ken enjoys reviewing fitness equipment and exercise routines.

Friday, December 28, 2012

Exactly What are Bunions?

A bunion is actually a deformity of the foot, and more particularly, the big toe, whose tissue becomes enlarged at the joint, thereby causing it to deviate laterally.

Facts on Bunions

The medical community is sometimes on the fence about the causes of bunions with some believing they are the direct result of extended wear of tight-fitting shoes, especially those with pointed toes. However, others strongly believe they are hereditary, but definitely related to wearing shoes that force the big toe inwards.

Whatever the medical community believes to be true, the bottom line is that studies have shown that they are caused by poorly fitting shoes, simply proven by cultures where shoes are not worn and where there is no case of bunions existing.

Bunions are not only unsightly, they are also extremely painful. The big toe, in severe cases, will either over or under lap the second toe, making wearing shoes extremely uncomfortable and painful. When the situation worsens, pain can develop even when barefoot. Other symptoms associated with bunions include skin irritation and redness around the area, as well as blisters forming at the site. Arthritis is another common problem associated with bunion development, as is bursitis.

What are the Best Shoes for Bunions

Having bunions is truly a difficult thing to live with, making it very hard to find comfortable shoes and walk without pain. Many patients have to wear larger sized shoes to accommodate the added width of the bunion. That's why it's crucial for a sufferer to find the right shoes that will make walking or playing more comfortable.

One suggestion is to invest in a shoe with a wider toe box, and avoid trying to break in footwear. Also, women might want to give men's shoes a try because they are naturally wider to accommodate a men's feet.

New Balance: New Balance is a leader in the field of sports shoes and is embraced by many patients with bunions. They offer different tennis shoes to pick from, and they provide the support and stability required. One suggestion is the New Balance 587 model, which comes with a wider toe box.

The Saucony ProGRID Omni: Another popular shoe that gives patients stability, control, and comfort is the Saucony ProGRID Omni. It is renowned for its availability in various widths, providing patients with bunions somewhat of a "custom fit" with extra cushioning in the area. Get more information on shoes here.

The Mizuno Wave Rider: You'll get lots of support for the forefoot in this model, which has been specially designed to relieve foot and bunion pain. It is a lightweight shoe with plenty of mesh on the upper, making it a wonderful choice for athletes.

About the Author:
Joyce G. is a professional health blogger and writer. She currently partners with altrazerodrop.com in raising awareness about the importance of health and fitness. Get more information on shoes here.

Friday, July 06, 2012

After four days in this truck I began to feel something of an appreciation for how Genghis Khan must have felt as he charged into unsuspecting villages.

The 450 hp and 470 lb-ft of torque were intoxicating in this pickup, and the whine of the supercharger was a quick way to bring a smile to my face.

While docile under normal driving conditions, when dipping into the WEP War Emergency Power of the supercharger, the truck became even more enjoyable.

While the truck is no slouch, given its weight, the additional height from the off-road suspension and its oversize wheels, it feels much faster than a normal Sierra, but not as insanely quick as one would hope with the additional power of forced induction.

The TVS 1900 supercharger kit for the 5.3-liter gives you instant power when you tromp on the loud pedal. And loud it is, because with the addition of SLP exhaust tips, the truck has a burble and growl that makes a great addition to something with a high ride height and badges that say "supercharged" on the door.

Looking under the hood you can tell that this is no stock truck, despite being able to order the kit and products from the dealer without impacting the warranty.

But, the underhood finish of the kit leaves something to be desired. It looks both at home and not quite right. The kit would look better with a little less chrome and more flat accents; the shiny SLP air tube under the hood looks out of place.

The interior was the biggest letdown. Much to my surprise, the Katzkin interior treatment not only mixed two colors you shouldn't mix black and brown but it made it appear that the truck had far more miles on it than it actually did.

Judging from the play in the fabric and finish, I would have thought 30,000 miles had been ridden in the seats. Much to my horror, there were just more than 500 miles on the odometer when I grabbed the keys. I would have preferred the money be kept under the hood and the interior upholstery left stock.

The crew cab provided ample interior space for both front and rear passengers and for hauling groceries.

As I was in the process of moving, I filled the bed with my large items and hauled them to my new place.

The added height from the off-road suspension option worked well for setting and picking items up when loading and unloading.

Overall the truck is a lot of fun and useful if big trucks with big power tickle your fancy. The biggest problem I had over my time with it was keeping my foot out of the accelerator. While I was no fan of the interior appointments, I'll overlook it for the sound of the supercharger and the juvenile smile I often had.

By: David Arnouts