This is a very good back training action, mainly to increase the thickness of latissimus dorsi.

Before answering your question, let's understand the essentials of this action.

The more conventional training methods seen in the health room are as follows:

Put one knee on the stable end of the bench, sit backwards with your hips, lean forward with your back straight, put your arms on the same side in front of your shoulders, keep your elbows straight and unlocked, step on the ground at the back of the other leg obliquely, keep your knees straight and unlocked, keep your hip joint neutral, tuck in your abdomen and hold out your chest, retract and sink your shoulder straps, look forward, pick up dumbbells, naturally droop your arms, don't use too much force, keep your elbows straight and don't lock your wrists. To prepare for inhalation, when exhaling, the arm will slide backwards first, and at the same time, the dumbbell will be lifted to the lower abdomen position by bending the elbow. At this time, the big arm will clamp the body, parallel or slightly higher than the horizontal plane of the back, the small arm will naturally droop, the wrist joint will remain neutral, and the latissimus dorsi will feel contracted. Inhale, latissimus dorsi will do centrifugal contraction, control the arm to restore the dumbbell to the initial position, and repeat the breathing rate for 2-4 seconds.

The above are more routine movements, but many of them I saw in the gym were not like this, but like this:

Of course, this guy's demonstration is exaggerated. Unless you can really find the strength of latissimus dorsi, it is a wrong move.

Back to your question, when rowing with a dumbbell tilted with one arm, should you put your body up or just retract your elbow?

My answer is anything!