ISO 20957-8.2017规定了从站立或坐姿执行的步进机、爬梯机和攀岩机（以下简称培训设备）的安全要求。这些要求是对ISO 20957-1一般安全要求的补充，ISO 20957-8.2017旨在与这些要求一起阅读。 ISO 20957-8.2017适用于S级和H级内的固定式训练设备，如步进机、爬梯机和攀岩机训练设备。对A级精度提出了额外要求。

ISO 20957-8.2017 specifies safety requirements for stepper, stairclimber and climber machines (hereafter called training equipment) performed from either a standing or sitting position. The requirements are in addition to the general safety requirements of ISO 20957？1, with which ISO 20957-8.2017 is intended to be read in conjunction. ISO 20957-8.2017 is applicable to stationary training equipment type stepper, stairclimber and climber training equipment, within classes S and H. Additional requirements are provided for accuracy class A.