There is a relationship between standing posture and stability and I am going to try and show you how. This information is about the whole body posture and its relationship to the center of gravity stability, which is also known as COG. Twenty seven subjects were taken for observation (Krebs, Danis, Gill-Body, Sahrmann pg. 502). What they did for this observation is first they got force plates, which measure ground reaction forces while subjects stood with their feet approximately thirty centimeters apart and eyes open and with their feet together and eyes closed. In all of the subjects, during the standing with their feet apart, the COG was anterior to the ankle, knee, back, and shoulder and posterior to the hip and neck. Subjects had an anterior pelvic tilt, extended trunk and head, right laterally flexed trunk and pelvis, and flexed knees. With their feet together, subjects increased their anterior pelvic tilt, trunk, head, and knee flexion(Krebs). Obviously with the observation stated above the subjects that changed from them standing with their feet apart to feet together increased their whole body movement patterns to control standing stability....
