In addition, since isometric exercises are done in a static position, they won't help improve speed or athletic performance. They can be useful, however, in enhancing stabilization â maintaining the position of the affected area â since muscles often contract isometrically to aid in stabilization.
Etiology. Most (85-95%) substernal thyroid masses represent benign goiter. Historically, goiters have generally occurred because of iodine deficiency, although this is now observed primarily in developing nations.
Called also suprarenal. 2. an adrenal gland. paranephric. adrenal gland a small triangular endocrine gland situated in the retroperitoneal tissues at the cranial pole of each kidney; it is the result of fusion of two organs, one forming the inner core or medulla, and the other forming an outer shell, or cortex.