In end-stage no osteoarthritis t responding to non-surgical therapy, total knee arthroplasty (TKA) is a safe and cost-effective intervention. The main clinical indication for TKA is osteoarthritis, which accounts for 94–97% of the operations. Replacement of knee joints generally leads to pain reduction, correcting of joint alignment, improvement of physical function, and a high satisfaction rate. However, patients may not fully regain muscle strength and functional performance after surgery, and impairments of muscle strength and functional capacity remain below the level of a healthy age- and gender matched population for years after. Furthermore, about 20% of the patients may continue to endure knee pain or other knee problems after TKA. (Synder L, …show more content…
Examples of this are poses in body building or pushing against an immoveable object such as a wall. One of the main benefits of isometric training is that the body can activate nearly all the available motor units - something that is usually very difficult to do. Back in the 1950s, researchers Hettinger and Muller found a single daily effort of two-thirds of a person’s maximum effort exerted for six seconds at a time for ten weeks increased strength about 5% per week, while Clark and associates demonstrated static strength continued to increase even after the conclusion of a five-week program of isometric exercises. Another benefit of isometric training is simply the amount of time spent performing an exercise. Consider an exercise like the bench press. It may take one to two seconds to perform with each joint angle only being trained for short periods of time. In contrast, an exercise that mimics the bench press, like a press against pins at the sticking point of the lift, may be performed for several seconds. In other words, if you have a problem at a joint angle in a lift, you can do targeted isometrics to quickly overcome your problems. (Blackwell,