Performing abdominal thrusts on someone else involves standing behind them, and providing and inward and upward force in the upper abdomen. Abdominal thrusts can also be performed on oneself with the help of certain objects, such as by leaning over a chair. In adults, there is limited evidence that the head down position can be used for self-treatment of suffocation and appears to be an option only if other maneuvers do not work.[7] In contrast, in children under 1 it is recommended that the child be placed in a head down position as this appears to help increase the effectiveness of back slaps and abdominal thrusts.[8]