Rectus abdominis activation during gait is associated with activation of which hip muscle group?

Rectus abdominis activation during gait is associated with activation of which hip muscle group?

• A. Ankle plantar flexors
• B. Hip flexors
• C. Knee extensors
• D. Hip abductors

Answer: (B)

During gait, coordinating trunk posture with leg advancement is crucial. The rectus abdominis acts as a trunk flexor and helps stabilize the pelvis and spine as the leg is brought forward. When the hip flexors are activated to advance the thigh (hip flexion) during swing, the abdominal muscles often fire in concert to control forward lean and prevent excessive lumbar motion. This synchronization explains why rectus abdominis activation during gait is associated with hip flexor activation. Other muscle groups aren’t as tightly linked to this forward-leaning, leg-advancing pattern. Ankle plantar flexors support push-off, knee extensors stabilize the leg in stance, and hip abductors mainly stabilize the pelvis during single-leg stance, rather than coordinating with hip flexion for forward leg swing.

During gait, coordinating trunk posture with leg advancement is crucial. The rectus abdominis acts as a trunk flexor and helps stabilize the pelvis and spine as the leg is brought forward. When the hip flexors are activated to advance the thigh (hip flexion) during swing, the abdominal muscles often fire in concert to control forward lean and prevent excessive lumbar motion. This synchronization explains why rectus abdominis activation during gait is associated with hip flexor activation.

Other muscle groups aren’t as tightly linked to this forward-leaning, leg-advancing pattern. Ankle plantar flexors support push-off, knee extensors stabilize the leg in stance, and hip abductors mainly stabilize the pelvis during single-leg stance, rather than coordinating with hip flexion for forward leg swing.