What are the roles your talking about
Answer:
Because some exercises do not require some foods.
The answer for this question would be Two words
Ethymology is a study about word origin and their meaning. In this case, osteoarthritis is from word osteo- which means bone and arthritis that means inflammation in the joint. Those words are from the Greek language.
The answer would be all of the above. Resistance bands, Weight machines and free weights are all things that help strength training.
I hope this helped! :-)