Your golf fitness training program should include exercises for the both the lower and upper body and primarily focus on those exercises that add to the motion of the golf swing. The program exercises should involve multi-joint movements that also include work for the torso. A strong, powerful golf swing requires coordination and strength in the major muscle areas of the body and therefore the exercises you perform should help you build both coordination and strength.
Before you start any sort of golf fitness training program you should always consult with your doctor, especially if you are a more mature golfer. If you know what type of exercises you will be performing and how often you will be training, make sure you cover them with your doctor. Your doctor should tell you if they have any concerns regarding the types of exercises you will be doing and your health.