December 23, 2009. The term AGAP is an abbreviation for the Anion Gap, which is a measurement of ions that have either a positive or negative charge, present in the blood. The anion gap tends to increase whenever there is an excess of acids in the blood which is usually the result of insufficient removal of acids via the lungs stomach or kidneys.
Bursitis may also develop in the knee from overexertion while playing tennis. The knee may also suffer a sprain, strain or tear in the ligament or cartilage. Arthritis can also set in after years of strain on the knee joint, resulting in pain, swelling, stiffness and reduced range of motion.
Re: What is the best knee support to use while bowling. I suspect that bowling hasn't weakened the knee. After all, it's still exercise (albeit minimal). Everyday life without regular exercise will weaken the knee, and you are just beginning to notice it due to the bowling.