Difference between Kroc Row and One-Arm DB Row?

[Crow]

The main difference I see is the different back-angle? DB Row with Torso parallel to the ground and Kroc Row with what looks like a 45°-angle...

How does that affect the muscles trained with the Kroc Row compared to the One-arm DB Row? More emphasis on the upper back?

[robertscott]

Kroc rows aren't really a separate exercise. It's just a dumbell row done using straps and a bit of body english so you can get a zillion reps with a heavy weight. It's just become a fashionable thing to call our dumbell rows Kroc rows now because it makes you sound HARDCORE TO THE MAX

[Matt Z]

What do you call it when you do strict Rear Delt Rows for high reps with the heaviest dumbbell available?

[Crow]

Kroc rows aren't really a separate exercise. It's just a dumbell row done using straps and a bit of body english so you can get a zillion reps with a heavy weight. It's just become a fashionable thing to call our dumbell rows Kroc rows now because it makes you sound HARDCORE TO THE MAX

Thats because I asked about the different angle of the torso...

O. k. ... let me put it differently... How does the angle of the body affect the activation of muscles in the back? More involvement of the upper back (including upper trapezius?) with a 45°-angle?

[Matt Z]

45-degree angle + Neutral grip = Lats & Middle/Lower Traps
Parallel to floor + Neutral grip = Longer range-of-motion with more Rhomboid and Rear Delt involvement.

Using a pronated grip (elbow out) and pulling to the chest turns a DB Row into a Rear Delt Row. ... Lots of Rear Delt and Rhomboids, with less help of the lats.

[robertscott]

Kroc rows aren't really a separate exercise. It's just a dumbell row done using straps and a bit of body english so you can get a zillion reps with a heavy weight. It's just become a fashionable thing to call our dumbell rows Kroc rows now because it makes you sound HARDCORE TO THE MAX

Thats because I asked about the different angle of the torso...

O. k. ... let me put it differently... How does the angle of the body affect the activation of muscles in the back? More involvement of the upper back (including upper trapezius?) with a 45°-angle?

It's still the same exercise. You can do a dumbell row with a more upright torso. Lots of people do. Doesn't make it a Kroc row...

[robertscott]

What do you call it when you do strict Rear Delt Rows for high reps with the heaviest dumbbell available?

The Matt Z row has been born!

[Dub]

Usually one-arm dumbbell rows also have more points of support. Kroc is just supported by one hand if even that. It's still the same exercise, kroc rows are just high-rep forced dumbbell rows like Robbie said. I like Kroc's personally, it gets my biceps and lats quite the burn and it's alos great grip work. I find Kroc's easier to progress than normal DB rows, probably due to that sprinkle of cheating added on the final reps.

[Crow]

45-degree angle + Neutral grip = Lats & Middle/Lower Traps
Parallel to floor + Neutral grip = Longer range-of-motion with more Rhomboid and Rear Delt involvement.

Using a pronated grip (elbow out) and pulling to the chest turns a DB Row into a Rear Delt Row. ... Lots of Rear Delt and Rhomboids, with less help of the lats.

Thanks!