i disagree that doing dumbell rows lying on a bench will bring the same results, because Dumbell-rows is a rowing exercise where you really can stretch your lats out which you canīt do over the same distance while lying on a bench, and the range of motion is also better than in most other rowing versions. Also, dumbell rows will not target your nervous system that much (like all unilateral exercises), so overtraining doesnīt occur easily.
with 45 1/2 yr i did last week my new PB on Dumbell-rows, 9 reps with 110kg/242 lbs. on the Gym80 iso-row machine i did today also PB
with 7 reps for 190 kg/418 lbs (1 arm, 418 lbs each side
).