So provided lack of balance was not there, which will always be a limiting factor with a heavy weight no matter how coordinated you are, it would be a useful unilateral exercises. But this is purely hypothetical because balance is an issue, for example for you. The evidence is you using 110 lbs for a lower body strength exercise.
I'm sorry, but your post shows a lack of understanding. The load utilized is, in itself, irrelevant. Would you say someone is weak because they can only do an iron cross with a 10kg weight vest? I mean, the vest is only 10 kilos, that's light, right?
When calculating loads for a shrimp or a pistol, the trainee's body weight needs to be taken into consideration. When doing an unladen shrimp, the load is roughly 85% of the person's body weight, so 170 lbs for a 200 lb man, which is being lifted on one foot. This is equivalent to the load on the legs found in a ~170 lb back squat.
For someone like me, an unladen shrimp results in about 190 lbs of weight per leg. Add 110 lbs of load and that's 300 lbs per leg. An equivalent back squat (in terms of tension on the legs) is around 410 lbs. The math breaks down as follows. 300 per leg x 2 = 600 lbs. 600 lbs - 190 for BW = 410. In other words, when I'm doing 110 lb single leg work, it's equivalent to repping 410 lb squats, at least as far as tension on the muscles of my legs and hips are concerned. The lower back is another matter.
