Any good reference papers comparing the different grading systems, their drawbacks and advantages (pros and con). I am looking for grading muscles within normal subjects and with neuromuscular conditions as well.
I am not sure that I fully understand the question, but many years ago we examined human upper arm muscle contractions. The ref is below if useful
Article: Isometric tension development in a human skeletal muscle in relation to its working range of movement: The length tension relation of biceps brachii muscle
H.M. Ismail · K.W. Ranatunga
Experimental Neurology 01/1979; 62(3):595-604.
We also examined spastic subjects in a subsequent paper in Muscle & Nerve.