Asymmetrically lifts head slightly above shoulder level (to 45°), head bobbing1, 6
Elbows move forward toward shoulders1
Decreased hip flexion, increased knee extension1
Hip flexors elongated- thigh rests on surface1
Intermittent kicking out1
Shoulders start to retract and abduction1
Ear rests on supporting surface1
Mouth to hand1
Decrease in forward weight shift1
Partially weight bearing on forearms and ulnar side of hands1
Pelvis lowered, thigh resting on surface1
Hip flexors are elongated causing decrease in hip flexion, lowering pelvis and allowing the thighs to rest on the surface; increased extension at knees
In prone, elbows move forward toward shoulders; infant can lift his or her head to 45 degrees
Intermittent kicking out in prone; weight shirts to upper chest
Shoulders begin to retract; partial weight bearing on forearms and radial side of the hands