KAATSU VS. SUJI BLOOD FLOW RESTRICTION CUFFS
At KAATSU, we are passionate about transparency and empowering you with science-backed solutions to improve your strength, recovery, and longevity. As the pioneers of the Blood Flow Restriction (BFR) with a 60-year history of discovery, experimentation, research, and clinical refinement, we are proud of the unique, ground-breaking modality that we developed. We welcome direct comparisons to any BFR product on the market. We are confident that a deeper look at the science, safety, and versatility will show you why the original KAATSU the unparalleled leader in the field.
Personalization
KAATSU offers a range of customizable settings, including various pressures and cycle times. This allows for highly personalized protocols that are specific to each user.
Suji's personalization is bounded by its LOP-percentage model, which scales pressure to a calculated occlusion target and significantly reduces the level to which use can be personalized.
Cycle Mode vs. Constant Pressure
KAATSU pioneered the patented, Cycle Mode technology that is gentle, effective, and safe. This uses repeated, brief, and progressive inflation and deflation of pneumatic bands to enhance circulation, accelerate recovery, and allow for both passive and isometric applications as well as vigorous exercises.
Suji uses constant pressure during training, with a separate slow inflate-and-hold "recovery" routine that does not replicate the results of KAATSU's patented Cycle Mode.
Non-Occlusion vs. Occlusion
KAATSU equipment and protocols are specifically designed to never impede or occlude arterial flow (from torso to limbs). This makes KAATSU inherently safer and eliminates the need for Limb Occlusion Pressure (LOP) calculations.
Suji's standard protocol applies a percentage of Limb Occlusion Pressure to deliberately restrict arterial flow. This tourniquet-style approach requires partial arterial occlusion to elicit a training response.
Safety
KAATSU is safe precisely due to its non-occlusive bands are engineered to avoid compressing nerve bundles and arteries. The Cycle Mode starts at a low pressure and creates reperfusion every 30 seconds. This protocol was tested on over 12,000 patients, including over 2,000 cardiac-rehab patients, over a 10-year period by a team of cardiologists before launching in the US.
Suji neither has the research history of KAATSU, that dates back to 1994, nor the clinical application history of KAATSU that dates back to 1973. Additionally, it lacks both non-occlusive bands and the patented Cycle Mode, the two engineering features most associated with KAATSU's exceptional safety profile.
Comfort and Feel
KAATSU bands are comfortable as described by most users. This enables comfortable, pain-free use even during intense dynamic movement. Due to the repeated compression and decompression phases, the sensation of cyclical reperfusion with KAATSU equipment leads to high compliance among users.
Suji's 10 cm pneumatic cuffs are reasonably comfortable at rest, but the constant-pressure inflation against a percentage of LOP creates the sustained discomfort common in occlusion-based systems. There is no cyclical reperfusion to relieve the sensation, which can reduce compliance for longer sessions.
Systemic Benefits
By briefly and progressively modifying venous flow, KAATSU slowly and gradually engorges limbs in blood, leading to repeated shear stress within the vascular tissue. This creates a profound systemic effect, increasing vascular elasticity and sending signals to the brain to release nitric oxide and beneficial hormones and metabolites that are circulated throughout the body.
Suji's targets localized hypoxia in the working muscle below the cuff, like other tourniquet-style devices. Because it lacks repeated, progressive cycles of compression and reperfusion, it does not generate the same shear-stress driven systemic response delivered by KAATSU.
Passive Use
Due to its unique, automated Cycle Mode, KAATSU is the ideal tool for passive recovery or for those who are amputees, either temporarily or permanently immobile, in a wheelchair or with a cast, boot, or sling. KAATSU can be used when stationary, bedridden, and immobile to accelerate recovery and repair.
Suji offers a slow inflate-and-hold recovery mode, but its reliance on LOP-based constant pressure during sessions makes use less comfortable, effective, and safe than KAATSU's automated Cycle Mode.
Broad Use and Convenience
KAATSU's unparalleled safety, comfort, long proven clinical history usage, and versatility is designed to serve the entire human spectrum, from elite athletes and post-op rehab patients to amputees, paraplegics, and the elderly for home use.
Suji is primarily marketed to athletes and active rehab patients — golfers, runners, CrossFit, military, etc. It is not optimized for the elderly, paraplegic, and the wide array of other use cases addressed by KAATSU's Cycle Mode.
STILL NOT CONVINCED? REACH OUT.
KAATSU's team has hundreds of peer-reviewed papers to share. This literature can answer many of your questions about KAATSU’s physiological mechanisms, potential applications, and safety.
