1 Anaerobic exercises use fast-twitch muscle fibers (Type II muscles) much more. 2  The main fuel sources are ATP or glucose; much less oxygen, fat and protein is used. 3  This type of activity produces lots of lactic acids.
A loanword (or loan word or loan-word) is a word borrowed from a donor language and incorporated into a recipient language without translation. It is distinguished from a calque, or loan translation, where a meaning or idiom from another language is translated into existing words or roots of the host language.
Definition of loan. 1  1a : money lent at interest took out a loan to pay for the new carb : something lent usually for the borrower's temporary use. 2  2a : the grant of temporary use Can I have the loan of your car?b : the temporary duty of a person transferred to another job for a limited time He had been on loan to the navy during the war.