As you all probably now in BB Pavel calls this exercise the reverse row as it should mimic the Bench Press in an opposite direction.You pull yourself to the bar.
Now how can you do this?Well there are many ways to do it.You can use a wide grip,you can use a shoulder width grip or inbetween.You can do it on a straight bar or you can use Rings to pull yourself up.You can use an overhand or underhand grip.Ok so far.
But now here is what started me thinking the movement over.First when you use a straight bar your hands are fixed in one position.Secondly when you decide to take a wide grip with the exercise,and this is my opinion,you will have the same unnatural position of the arms and shoulders as with the Bench press,see also the chapter of CC about HSPU in which coach warns about developing painful rotator cuff muscles with Bench pressing and Military and even worse Neck presses.
So here is my advice to you.Do not use a wider then shoulder width grip,try to use rings so you can rotate the arms and maybe also do not pull high to the sternum or neck but better yet to the upper abdomen for preventing to much stress on the rotator cuff.When using rings this will probably be a different story.
Anyway untill now I did these horizontal rows on a straight bar with a rather wide grip.I will go and do them on the rings and with a shoulder wide grip.
I hope the above makes sense.If not please feel free to give feedback.