What is stride length defined as?

Stride length is defined as the distance measured from the heel strike of one foot to the subsequent heel strike of the same foot. This concept is crucial in gait analysis as it provides insight into an individual's walking pattern and efficiency.

When considering the definition within the context of gait mechanics, option B accurately captures the essence of stride length, as it specifically reflects the interval during which one foot completes a full cycle of movement, striking the ground twice. This measure can vary based on factors such as speed, terrain, and individual biomechanics.

In comparison, the other answer choices do not accurately define stride length. For example, the definition involving the distance between heel strikes of opposite feet relates more closely to step length rather than stride length. The average length of a person's step and the total distance covered in a single walk are broader concepts that do not specifically refer to the distance between successive heel strikes of the same foot, which is the critical aspect of understanding stride length. This specificity is paramount in both clinical assessments and athletic training, where practitioners analyze gait patterns to identify any potential deviations or improvements.