What is the limiting factor when performing high intensity anerobic activities?

Glucose is the limiting factor when performing high intensity anaerobic activities.

Exercise can cause profound changes on glucose homeostasis in the body. For those people who have type 1 diabetes, aerobic exercise usually causes blood glucose concentration to rapidly drop. On the other hand, anaerobic exercise may cause it to rise, thereby making glycemic control difficult and challenging. Continuous glucose monitoring can increase self-efficacy for those individuals who are prone to hypoglycemia and hyperglycemia.

oxygen is the first element in group 16 (via) of the periodic table. the periodic table is a chart that shows how chemical elements are related to each other. the elements in group 16 are said to belong to the chalcogen family. other elements in this group include  sulfur, selenium, tellurium,  and  polonium.  the name chalcogen comes from the greek word  chalkos,  meaning "ore." the first two members of the family, oxygen and sulfur, are found in most ores.

oxygen is by far the most abundant element in the earth's crust. nearly half of all the atoms in the earth are oxygen atoms. oxygen also makes up about one-fifth of the earth's atmosphere. nearly 90 percent of the weight of the oceans is due to oxygen. in addition, oxygen is thought to be the third most abundant element in the universe and in the solar system.