Forward body lean during acceleration decreases from less than which degree range to less than which degree range as stride length increases?

Forward body lean during acceleration decreases from less than which degree range to less than which degree range as stride length increases?

• A. <45 to <5 degrees
• B. <30 to <10 degrees
• C. <60 to <15 degrees
• D. <20 to <2 degrees

Answer: (A)

During acceleration you start with a fairly pronounced forward lean to maximize horizontal force production, then gradually become more upright as stride length increases and you drive more upward and backward with each step. That progression is captured by leaning less than 45 degrees initially and reducing to less than 5 degrees as you lengthen your stride. The other ranges don’t reflect this gradual shift toward an upright posture as acceleration continues.

During acceleration you start with a fairly pronounced forward lean to maximize horizontal force production, then gradually become more upright as stride length increases and you drive more upward and backward with each step. That progression is captured by leaning less than 45 degrees initially and reducing to less than 5 degrees as you lengthen your stride. The other ranges don’t reflect this gradual shift toward an upright posture as acceleration continues.