The location of the hole (perforation) in the eardrum also effects the degree of hearing loss. If severe trauma (e.g. skull fracture) disrupts the bones in the middle ear which transmit sound or causes injury to the inner ear structures, the loss of hearing maybe quite severe.
1 Resting 1-3 minutes between sets is probably ideal for you. 2  The higher your training intensity is for a given exercise and/or the more demanding it is on your body, the more you should stay nearer to the 2-3 minute range.
Usually you only make a one-rep increase, but you can increase the number by two or more. When you can't do another set, work your way back down by decreasing the reps in the same way you increased them. Most ladder workouts include a rest period between sets, which is usually less than one minute.