The Purpose of Jogging

The "Foot and Ankle Research" magazine has published a new study and found that when people wear shoes, their steps will be much larger than that of barefoot. When foot touches down the ground, the force on heels will be greater. One Harvard University Human Evolutionary Biology professor called Daniel E Li Boman has completed a study. Through the contrast between city primary and middle school students that used to put on shoes and students of countryside who used to be with barefoot, it was found that city students' foot touchdown point will be focused on heels with the touchdown ground while running. But countryside students' foot touchdown point mainly would focus on the front of feet. They would land on the ground lighter, and no obvious force would be produced.It was proved by this research that it is better for human bodies to do barefoot running. The reason was that the smaller the impact force, the less damage. It was thought by scientists that human beings are designed for barefoot running. Some dangers, such as stress fractures and muscle or tendon injuries will be increased naturally with slightly inappropriate actions, so the method is very important. It is worried by a lot of people that running will not only make knees injury, but also will lead to arthritis. A research has been released by the American "National Public Radio" in recent days that it has been found that running will be beneficial to joint health instead. One group of people who have the risk of arthritis was chosen by researchers of Swedish to run each day, and another group will not move.The NMR imaging technology showed that runners' cartilage health has been improved significantly. It was suggested by it that joint health will be helped through running. David Phil Johnson was an epidemiologist expert of Boston University School of Medicine, and it was said by him that when people reached to a certain age, such as forty years old, and then cartilage will lose a part each year. There will be healthy cartilage and joints if there is nothing wrong with your knees and in a week you can run five to six times with a proper speed. But it should be noted that if your knees have been injured, or you have ever received knee surgeries and run with incorrect postures, and then the arthritis risk will be increased.In the second place, people had better not run intensely if they overweigh nine kilograms. Otherwise, inflammation of knees will be forced to produce, bone spurs will be formed and cartilage loss will be accelerated. The correct running posture is to raise head and keep the back straight and relaxed. When feet touch down the ground, knee joints should be bend slightly. Arms should bend at about ninety degrees, and let arms extend as large as possible. What is more, we should select running programs, which are proper. For example, run five kilometers with ten to twelve weeks at the beginning, run ten kilometers with six to eleven weeks in intermediate progress, and run ten kilometers with eleven weeks at last. 800x600 Normal 0 7.8 Å 0 2 false false false EN-US ZH-CN X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:nh<; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";}

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