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where is the sprint velocity (m/s), the step frequency (1/s), the average force applied to the ground (N), the body weight (N), and the contact length (m). In short, sprint velocity is reliant on three main factors: step frequency (how many steps you can take per second), average vertical force applied to the ground, and contact length ...
When running at a constant speed, it has been found that stride frequency increases during incline vs. level running with a concomitant decrease in stride length. At a speed of 30 meters/second Gottschall and Kram noted an increase in stride frequency from 1.45±0.06 Hz to 1.51±0.07 Hz at an incline of 9 degrees (15.8%). [ 8 ]
Similar to selection of stride length and frequency, humans also select for a metabolically optimal step width. [6] Adopting a wider stance increases the stability of a passive dynamic system, as well as increases the lateral clearance of the swing leg from the stance leg. [20]
The Froude number may also be calculated from the stride frequency f as follows: [15] = = =. If total leg length is used as the characteristic length, then the theoretical maximum speed of walking has a Froude number of 1.0 since any higher value would result in takeoff and the foot missing the ground.
Stride Length: It is defined as the distance between any two successive points of heel contact of the same foot. In a normal gait, the stride length is double the step length. Walking Base or Stride Width: It is defined as the side-to-side distance between the line of step of the two feet. Cadence: It is defined as the number of steps per unit ...
The main difference between long- and short-distance runners is the length of stride rather than the rate of stride. [ 52 ] [ 53 ] During running, the speed at which the runner moves may be calculated by multiplying the cadence (steps per minute) by the stride length.
Strobe lighting at known frequency has been used in the past to aid in the analysis of gait on single photographic images. [10] [11] Cine film or video recordings using footage from single or multiple cameras can be used to measure joint angles and velocities. This method has been aided by the development of analysis software that greatly ...
Different age leads to different step speed and timing. Arm swinging slows when the speed of walking is increased. The height of a child plays a significant role in stride distance and speed. The taller the child is the longer the stride will be and the further the step will be. Gait patterns are velocity and age dependent. For example, as age ...