A consistent training program improves technique and power-strength and finesse are extremely important in tennis. This is evident when you compare the musculature and agility of todays professional tennis players with the pros of eight to ten years ago.
Comprehensive training helps one to become a much better athlete in all areas.
Obviously a training program for tennis will be quite different than that of golf. For the endurance and stamina to last throughout a match, aerobic exercise should be performed consistently 3 to 5 times a week. Anaerobic exercises and drills at high intensity for no more than one minute intervals will help you make those fast dashes laterally and diagonally across the court. Your best bet is to load an action involved in the actual game when training. Muscle groups that need that extra special attention and are prone to injuries and soreness are the rotator cuffs at the shoulder joint, low back and obliques and leg muscles around the knee.