Resistance training is another name for strength training using weights or other devices. It may take the form of free weights, weight machines, elastic bands, dumbbells or your own body weight. Professional golfers have club-head speeds in excess of 100 mph, and even slow swingers generate club head speed of 50 mph, putting tremendous strain on various parts of the body. Resistance training strengthens your muscles, protecting your body and enabling it to cope with the strain. Your increased strength can improve your club head speed and increase your distance and control while mitigating the potential for injury.