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 for Students. 1 : money given with the understanding that it will be paid back. 2 : something given for a time to a borrower That's not mine, it's a loan.