Generally speaking, any intense bout of exercise that takes less than three minutes to complete is an anaerobic event. Sprints less than 800 meters, boxing, wrestling, weightlifting, downhill skiing, baseball, and football are activities that place greater demands on the anaerobic systems than they do the aerobic systems. It's predicted that in another couple of decades world class times in the mile or 1,500 meters will approach times that become anaerobic in nature as athletes become stronger and faster. Anaerobic activities utilize chemical energy and the simplest forms of glucose to power the body while aerobic activities utilize complex sugars and fats for energy. Let's briefly look at a couple of ways you can develop each of these fitness characteristics in a training program.
Weight training is the best way to build strength.
Two or three times a week with good intensity is generally sufficient to improve strength levels. Power can be enhanced many ways. One way is to perform your heavy weight training exercises very quickly, remembering to maintain good form. Running sprints, bicycling intervals, and fast up hill walking with a heavy load can enhance power. Squat jumps are very helpful.