In Maximum Velocity Early flight, the eccentric hip flexion is described as which of the following?

In Maximum Velocity Early flight, the eccentric hip flexion is described as which of the following?

• A. Decelerated backward rotation of thigh
• B. Accelerated forward rotation
• C. Neutral rotation
• D. Lateral rotation of thigh

Answer: (A)

In maximum velocity early flight, the leg is moving through the swing with the thigh tending to rotate backward due to momentum from the previous push. The hip flexors work eccentrically here, lengthening while still producing a stabilizing force to slow that backward rotation. This decelerated backward rotation of the thigh allows the leg to transition smoothly into forward swing and be ready for the next foot contact, which is crucial for maintaining high speed. Other descriptions don’t fit the phase: actively forcing the thigh forward would be concentric hip flexion, not eccentric; neutral rotation implies no rotation, and lateral rotation is a different plane of movement not dominant in this phase.

In maximum velocity early flight, the leg is moving through the swing with the thigh tending to rotate backward due to momentum from the previous push. The hip flexors work eccentrically here, lengthening while still producing a stabilizing force to slow that backward rotation. This decelerated backward rotation of the thigh allows the leg to transition smoothly into forward swing and be ready for the next foot contact, which is crucial for maintaining high speed.

Other descriptions don’t fit the phase: actively forcing the thigh forward would be concentric hip flexion, not eccentric; neutral rotation implies no rotation, and lateral rotation is a different plane of movement not dominant in this phase.