Abstract:

The research is undertaken with a view to exploring the angle of knee joint（AKJ）and the single-step cycle(T). Let the subjects wear the two kneepads which are widely used in our daily life respectively, obtain the three-dimensional coordinate data about Lower limb on the basis of simulating human walking and jogging through the three-dimensional capture system. Then calculate the angle of the knee by using space vector angle calculation method, and using one-way ANOVA model analysis the protective effect on knee joint of the two different knee pads in various forms of exercise. It provides a new method for evaluating and measuring the protective effect of knee and also some basis for the research and development of the kneepad or other protective equipment.

Key words: 3-D motion measurement, knee joint angle, kneepad, protective performance