Is there an indirect load put on the lats by doing shrugs? I was doing them earlier, and I noticed my lats begining to pain, as if they were being worked by the exercise.
"The highest reward for man's toil is not what he gets for it, but what he becomes by it." -John Ruskin 1819-1900
"He who fights monsters should see to it that in the process, he does not
become a monster. And when you look into the abyss, the abyss also looks into
you." - Nietzche
Probably to a very small extent.you may have gotten a pump from increased blood supply to the upper back from the shrugs.
sure it was the lats?
as tjwes there is going to small amount of load if any on he lats espcially compared to rows and pull ups.
my exprience - joined gym 10 years ago, 6 1/2 years hard weight training exprience.