Telescopic air bag, training equipment and design method

The invention provides a telescopic air bag, training equipment and a design method.The telescopic air bag is used for joint movement training and comprises a first connecting belt and a plurality of air bag units connected in series; the air bag unit is hollow and is used for accommodating air; the adjacent air bag units are communicated, and when the air bag units expand, the relative distance between the adjacent air bag units is increased; when the air bag units are contracted, the relative distance between the adjacent air bag units is reduced; the first sides of the at least two air bag units are connected through the first connecting belt, and the first connecting belt is used for restraining the relative distance between the connected air bag units; when the air bag unit expands, the telescopic air bag is bent in the direction from the head end of the first connecting belt to the tail end of the first connecting belt. The telescopic air bag is used for improving the joint movement training effect. 本发明