Note An empty result set is not the same as a null value. For a scrollable cursor, all the rows in the result set are returned to the calling batch, procedure, or trigger when the procedure exits. When returned, the cursor position is left at the position of the last fetch executed in the procedure.
The wall sit strengthens your lower body. Your quadriceps on the fronts of your upper legs remain in a static contraction to support the wall sit. The hamstrings on the backs of your upper legs also remain contracted as you sit. Your glutes contract during the wall sit to keep your body stable and balanced.
A group of muscles called the erector spinae -- sometimes referred to as your sacrospinal muscle group -- supports your spine. Your glutes consist of the gluteus maximus, gluteus medius and gluteus minimus. These muscles make up your buttocks, with the gluteus maximus being the largest muscle in the human body. Your abs and obliques work together with your lower back and glutes to help you rotate, balance and stabilize the body during sitting and standing. The Effect of Seat Variables. Variables such as seat height and the presence of arm rests effects how you sit or stand.