Precision. the degree of exactness of a measurement. describe a way that scientists imitate the order in nature. scientific inquiry.
What doesn't limit the range of moton from the things which you've mentioned would be age. Age per se doesn't really limit the range of motion - while there are factors which negatively influence our range of motion and which are strongly correlated with age, it is hard to say that age itself would be the cause of a limited range of motion.