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A commonly known and very basic test is the arm-pull-down test, or "Delta test," where the patient resists as the practitioner exerts a downward force on an extended arm. [16] Proper positioning is paramount to ensure that the muscle in question is isolated or positioned as the prime mover, minimizing interference from adjacent muscle groups. [12]
Bullworker is a product and fitness company that specializes in isometric exercise, that is the static contraction of a muscle without any visible movement.The original portable home fitness device was invented by Gert F. Kölbel in 1962.
Universal Gym Equipment was an American manufacturer of exercise equipment, in particular weight machines. It was founded by Harold Zinkin in 1957. In 1998, it was acquired by Flexible Flyer. In 2006 it was acquired by Nautilus, Inc. The Universal Gym brand was subsequently discontinued except for a line of selectorized dumbbells. [1]
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The U.S. Navy began using the company's catalog as an equipment manual in 1904, continued until 1971. In 1912, Hammacher Schlemmer printed its largest catalog to-date. Spanning 1,112 pages and taking a total of four years to compile, the catalog confirmed Hammacher as the most complete hardware source on the East Coast.
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In vitro muscle testing can be done on any scale of muscle organization - entire groups of muscles (provided they share a common insertion or origin, as in the human quadriceps), a single muscle, a "bundle" of muscle fibers, a single muscle fiber, a single myofibril, a single sarcomere, a cardiomyocyte or even a half-sarcomere. Muscle fibers ...