Blood flow
Blood flow restriction training / Occlusion Training (also abbreviated BFR training) or Occlusion Training or KAATSU is an exercise and rehabilitation modality whereby resistance exercise, aerobic exercise or physical therapy movements are performed whilst using an Occlusion Cuff is applied to proximal aspect of the muscle on either the arms or legs. In this novel training method developed in Japan by Dr. Yoshiaki Sato in 1966, limb (legs or arms) venous blood flow is restricted via the occlusion cuff throughout the contraction cycle and rest period. This results is partial restriction of arterial inflow to muscle, but, most significantly restricts venous outflow from the muscle. Given the light-load nature and strengthening capacity of BFR training, it can provide an effective clinical rehabilitation stimulus without the high levels of joint stress and cardiovascular risk associated with heavy-load training.