Is pre-ischemic training therapy credible

Pre-ischemic training therapy has a certain theoretical basis, but it has not been used for clinical verification and is not fully credible.
Pre-ischemic training therapy is to carry out ischemic training of the body with the help of instruments, thus causing the enhancement of autoimmune response, releasing the potential of the body, stimulating the cells to release protective substances, and enhancing resistance, so as to achieve the purpose of treating the disease. At present, it is theoretically a good therapeutic means, but there is no practical clinical application.
Moreover, for the pre-ischemic training treatment, the patient is very likely because of the improper control of the instrument to cause ischemia and hypoxia, affecting the recovery of their own body, and ischemia itself is a big damage, the proliferation of substances may not be able to fully compensate for the damage caused by their own damage, so this treatment is not entirely credible.