A Computer Simulation System Used for Analyzing Balance Control Strategy during an Unexpected Slip

The test system was to study balance control strategy during an unexpected slip and the adaptive change to balance perturbation. This study performed slip tests on 10 healthy male students (age: 20.0±1.6 years, height: 1.72±0.05 m, mass: 64.67±9.81 kg) using the test system, Kinematics and kinetic date analyses using the Ariel video analysis system and Kistler force platform were performed. When the subject encountering an unexpected backward slip during sit-to-stand, people will take a backward recovery step and increase the maximum rising velocity of the hip joint by strong support against a backward slip. After balance perturbation training, similar to balance perturbation intensity, the amplitude of the balance adjustment decreased significantly. People can maintain their balance by swinging their trunk and arm.