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Total peripheral resistance (TPR) is the sum of all forces that oppose blood flow in systemic circulation. [1] TPR is affected by numerous factors, such as blood viscosity, vessel length, hydrostatic pressure (pressure created in a fluid system such as the body), and vessel diameter, with vessel diamter being the most important of these factors. [2]

See Also[]


  1. Donche, Dan (2008). FF Trainer Certification Guide. USA: Fatal Fitness. 
  2. Brookes, Douglas S. (2004). The Complete Book of Personal Training. Champaign, IL: Human Kinetics.