Which of the following is NOT a factor affecting stride rate?

The concept of stride rate is closely related to how often a runner or walker completes a stride over a given period. Factors influencing stride rate typically involve frequency and physical condition rather than time spent in the air.

Time in the air refers to the duration a foot is off the ground during a stride, which is more directly connected to stride length rather than stride rate. Stride rate is primarily affected by how frequently a person can complete a stride within a specific timeframe.

Frequency of stride involves how many strides are taken within a minute, which is a direct measure of stride rate. Muscle fatigue can impact a person's ability to maintain speed and, subsequently, their stride rate, as fatigued muscles tend to slow down the overall movement. Overall fitness level also plays a role in determining how efficiently someone can run or walk, influencing their stride rate capability.

Thus, time in the air is not a factor affecting stride rate; instead, it is more related to other aspects like stride length and overall running mechanics.