The lactate threshold (LT) (or lactate inflection point (LIP) or anaerobic threshold (AT)) is the exercise intensity at which lactate (more specifically, lactic acid) starts to accumulate in the blood stream.
The third largest country of the world, the United States of America is located in North America between Mexico and Canada.he states of Alaska and Hawaii Islands are the only two states not sharing contiguous boundaries with the country. Alaska is situated to the northwest side of North America sharing its border with the neighboring country of Canada and Hawaii Island is an archipelago in the Pacific Ocean.
United States of America - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776