The problem is, based on the evidence, that viewpoint is overly simplistic at best and in some cases completely misguided. In a seminal study on the functional transfer of training, nine frail, elderly nursing-home patients were recruited to perform 3 sets of leg extensions—considered one of the least functional exercises—with a load corresponding to 80 percent of their one-rep max. The subjects trained three times per week for eight weeks. During that time, their muscle strength increased an average of 174 percent, and their walking speed increased by 48 percent. Most impressively, two of the subjects were able to walk unassisted, without the use of their canes![2]