Thursday, September 17, 2009

Elements of good running technique


Upright posture and a slight forward lean

Leaning forward places a runner's center of mass on the front part of the foot, which avoids landing on the heel and facilitates the use of the spring mechanism of the foot. It also makes it easier for the runner to avoid landing the foot in front of the center of mass and the resultant braking effect. While upright posture is essential, a runner should maintain a relaxed frame and use his/her core to keep posture upright and stable. This helps prevent injury as long as the body is neither rigid or tense. The most common running mistakes are tilting the chin up and scrunching shoulders.[citation needed]

Stride rate and Types

Exercise physiologists have found that the stride rates are extremely consistent across professional runners, between 185 and 200 steps per minute. The main difference between long- and short-distance runners is the length of stride rather than the rate of stride.[3][4]

During running, the speed at which the runner moves may be calculated by multiplying the cadence (steps per second) by the stride length. Running is often measured in terms of pace[5] in minutes per mile or kilometer. Fast stride rates coincide with the rate one pumps their arms. The faster one's arms move up and down, parallel with the body, the faster the rate of stride. Different types of stride are necessary for different types of running. When sprinting, runners stay on their toes bringing their legs up, using shorter and faster strides. Long distance runners tend to have more relaxed strides that vary.

Running injuries

Because of its high-impact nature, many injuries are associated with running. They include "runner's knee" (pain in the knee), shin splints, pulled muscles (especially the hamstring), twisted ankles, iliotibial band syndrome, plantar fasciitis, and Achilles tendinitis.[citation needed] Stress fractures are also fairly common in runners training at a high volume or intensity.[citation needed] The most common running-related injuries are due to over-exertion or bad running form.[citation needed] Repetitive stress on the same tissues without enough time for recovery or running with improper form can lead to many of the above. Generally these injuries can be minimized by warming up beforehand,[6] improving running form, performing strength training exercises, eating a well balanced diet, getting enough rest, and "icing" (applying ice to sore muscles or taking an ice bath).[citation needed]

Foot blisters are also common among runners. Specialized socks help to prevent blisters greatly. For existing cases, lancing the blister with a sterile needle and applying a cyanoacrylate glue (such as Superglue or Krazy Glue) may help to protect the wound and enable further running. This is common practice among hardened endurance athletes.[7]

For the prevention of jogger's nipple, there are many commercial products available. A common solution is to simply affix a piece of medical tape over each nipple before running.[8]

Another common pain is chafing. It occurs when one's upper thighs rub together and makes the skin raw. The skin feels coarse and has a rash-like look. It can be prevented by either rubbing petroleum jelly, deodorant, or special anti-chafing creams (sold in sticks that look like deodorant) to the area of the skin that rubs together.

A cold bath is a popular treatment of subacute injuries or inflammation, muscular strains, and overall muscular soreness, but which efficacy is controversial.[9] Some claim that for runners in particular, ice baths offer two distinct improvements over traditional techniques. First, immersion allows controlled, even constriction around all muscles, effectively closing microscopic damage that cannot be felt and numbing the pain that can. One may step into the tub to relieve sore calves, quads, hams, and connective tissues from hips to toes will gain the same benefits, making hydrotherapy an attractive preventive regimen. Saint Andrew’s cross-country coach John O’Connell, a 2:48 masters marathoner, will hit the ice baths before the ibuprofen. "Pain relievers can disguise injury," he warns. "Ice baths treat both injury and soreness." The second advantage involves a physiological reaction provoked by the large amount of muscle submerged. Assuming one has overcome the mind’s initial flight response in those first torturous minutes, the body fights back by invoking a "blood rush". This rapid transmission circulation flushes the damage-inflicting waste from the system, while the cold water on the outside preserves contraction. Like an oil change or a fluid dump, the blood rush revitalizes the very areas that demand fresh nutrients. Make sure not to stay in longer than 15 minutes, with 10 minutes usually being sufficient. Some claim that all of those can be effective in both minimizing and recovering from running injuries.[

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