This document specifies additional safety requirements for stationary strength training equipment. This document is intended to be read in conjunction with the general safety requirements of ISO 20957‑1. This document is applicable to stationary training equipment type strength training equipment with stacked weight resistance or other means of resistance, such as elastic cords, hydraulic, pneumatic, electrical, magnetic, springs and externally loaded weights (type 2) (hereinafter referred to as training equipment) with the classes H, S and I according to ISO 20957‑1. NOTE Free-weight barbell racks are subject to the requirements of ISO 20957‑4 and ISO 20957‑1.