(Stair Gait) Biomechanics of Locomotion

Extension

• Weight Acceptance to Pull up of Stance Phase

• Hip motion

• Gluteus maximus, Gluteus medius, Semitendinosus

• Concentric

Extension

• Weight Acceptance (0-14%) to Pull up (14-32%) of Stance Phase

• Knee motion

• Vastus lateralis and rectus femoris

• Concentric

Dorsiflexion

• Weight Acceptance (0-14%) to Pull up (14-32%) of Stance Phase

• Ankle motion

• Tibialis anterior

• Concentric

Plantarflexion

• Weight Acceptance (0-14%) to Pull up (14-32%) of Stance Phase

• Ankle motion

• Soleus, Gastrocnemius

• Concentric

Extension

• End of Pull Up (32%) to Forward Continuance (32-64%) of Stance Phase

• Hip Motion

• Gluteus maximus, Gluteus medius, Semitendinosus

• Concentric

Extension

• End of Pull Up (32%) to Forward Continuance (32-64%) of Stance Phase

• Knee Motion

• Vastus lateralis

• Concentric

Dorsiflexion

• End of Pull Up (32%) to Forward Continuance (32-64%) of Stance Phase

• Ankle Motion

• Tibialis Anterior

• Concentric and Isometric

Flexion

• Foot Clearance to Foot Placement of Swing Phase

• Knee Motion

• Semitendinosus

• Concentric

Dorsiflexion

• Foot Clearance to Foot Placement of Swing Phase

• Ankle Motion

• Tibialis Anterior

• Concentric and Isometric

Flexion and Extension

• Foot Clearance to Foot Placement of Swing Phase

• Hip Motion

• Gluteus Medius

• Concentric

Extension

• Foot Clearance to Foot Placement of Swing Phase

• Knee Motion

• Vastus Lateralis and Rectus Femoris

• Concentric