“The most effective conventional and alternative treatments for tennis elbow have the same basic premise: Rest the arm until the pain disappears, then massage to relieve stress and tension in the muscles, and exercise to strengthen the area and prevent re-injury. If you must go back to whatever caused the problem in the first place, be sure to warm up your arm for at least 5 to 10 minutes with gentle stretching and movement before starting any activity. Take frequent breaks.”

http://www.tennis-elbow.net/tenniselbow.htm