Your observation on neurological efficiency generalizes to all physical activities.
If you practiced pull-ups every day, you would become very efficient at pull-ups and possibly double the number you can do. At the same time, it isn't impossible for seemingly related measurements of strength (such as the biceps curl and deadlift) to get worse as your body "overfits" its adaptation to the pull-ups.
If you practiced pull-ups every day, you would become very efficient at pull-ups and possibly double the number you can do. At the same time, it isn't impossible for seemingly related measurements of strength (such as the biceps curl and deadlift) to get worse as your body "overfits" its adaptation to the pull-ups.