1, step frequency, that is, the frequency of footsteps, the number of times legs alternate per unit time when walking or running. It is one of the important factors that determine the speed of walking and running. Usually expressed in steps per second.
2. The stride feature refers to the feature that reflects the coordination and collocation relationship between feet in the travel footprint, and it is the reflection form of the walking motion feature in the travel footprint. Including:
(1) step size. The vertical distance between the left and right footprints and the same part in the journey is a common step. It can be divided into long steps (above 80 cm), middle steps (70-80 cm) and short steps (below 70 cm). The left and right common steps form a step. Three ordinary steps form a complex step.
(2) Step size. In the continuous stepping footprint, the extension line connecting the heel center point or the forefoot center point on the same side is taken as the walking line.
Extended data
Precautions for running
1, posture
Running posture should be reasonable. Your upper body should be straight, lean forward slightly, relax your shoulders, bend your elbows naturally, and swing your arms back and forth at your sides. In the process of running, the stride length is not required to be large, but the stride frequency and stride length should be basically the same. Pay attention to the stability of the body's center of gravity, not ups and downs.
Step 2 breathe
Breathing during running is very important. Breathing should have a certain rhythm. When breathing through the nose and mouth at the same time, the mouth does not need to be too wide, and the tongue can be rolled up to prolong the time of air in the mouth and reduce the stimulation of cold air to the respiratory tract. Beginners can suck in two steps and shout in three. Pay attention to exhaling gas from the lungs as much as possible every breath to increase the effective ventilation.
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