Longer resting times means more time spent at the gym. For a study on rest times to be translated into real workout recommendations, it would be more useful to know whether longer or shorter rest times are more efficient for size/strength/endurance gains. In other words, if I have an hour to spend at the gym, how long should my rests be? 3-minute rests would likely result in less overall volume than 1-minute rests in a constrained time period. Thus, applying the same logic used in the study to a situation in which time spent at the gym is controlled for, we would expect more modest gains from a 3-minute-rest workout program than from a 1-minute-rest workout program.