The most weight lifted by dumbbell rows in one hour is 32,730 kg (72,157 lb) by Eamonn Keane (Ireland) at Lough Lannagh Fitness in Castlebar, Ireland, on 30 March 2010. He completed a total of 1,119 repetitions of a 15 kg (33 lb) dumbbell with his left arm and 1,063 repetitions with his right.
Keane originally submitted two claims for this record at once: the evidence for this attempt (ID 123237) and the evidence for attempt ID 121107. The evidence for attempt 123237 was lost in the mail and thus 121107 was awarded the record, despite having occurred after 123237 and being for a lesser weight, because it was not known about the existence of 123237. Once he re-submitted the lost evidence, the record was awarded to this entry.