During the acceleration phase of gait, which actions occur?

During the acceleration phase of gait, which actions occur?

• A. Dorsiflexion
• B. Plantar flexion, knee flexion, hip extension, hamstrings and gastrocnemius/soleus
• C. Hip flexion only
• D. Plantarflexion only

Answer: (B)

During the acceleration phase, the leg is being prepared for forward propulsion and to enter the next step, which requires a coordinated mix of movements and muscle actions. Plantarflexion at the ankle helps push off the ground and contribute to forward momentum as the foot leaves contact. Knee flexion shortens the limb, aiding clearance and making the swing smoother. Hip extension helps position the thigh for backward propulsion and forward progression of the body. The hamstrings act as knee flexors and also assist with hip extension, while the gastrocnemius and soleus provide the plantarflexion push needed to drive the leg forward. This combination captures the propulsion and limb preparation happening during acceleration. Dorsiflexion alone, or hip flexion alone, or plantarflexion alone, don’t reflect the full set of coordinated actions occurring in this phase.

During the acceleration phase, the leg is being prepared for forward propulsion and to enter the next step, which requires a coordinated mix of movements and muscle actions. Plantarflexion at the ankle helps push off the ground and contribute to forward momentum as the foot leaves contact. Knee flexion shortens the limb, aiding clearance and making the swing smoother. Hip extension helps position the thigh for backward propulsion and forward progression of the body. The hamstrings act as knee flexors and also assist with hip extension, while the gastrocnemius and soleus provide the plantarflexion push needed to drive the leg forward. This combination captures the propulsion and limb preparation happening during acceleration. Dorsiflexion alone, or hip flexion alone, or plantarflexion alone, don’t reflect the full set of coordinated actions occurring in this phase.