Knowledge Tree
Relations (1)
related 2.58 — strongly supporting 5 facts
Allostatic load and negative energy balance are linked through the definition of allostatic overload, where Type 1 overload occurs when allostatic load exceeds resource availability during a negative energy balance {fact:1, fact:2}, while Type 2 overload is defined by high allostatic load in the absence of such a balance {fact:3, fact:5}. Furthermore, the tolerance for negative energy balance is a key factor in determining the appropriate time intervals for measuring allostatic load [1].
Facts (5)
Sources
Allostasis revisited: A perception, variation, and risk framework frontiersin.org 5 facts
claimAllostatic overload Type 2 occurs when allostatic load is chronically high but the animal is not in a negative energy balance, and in this state, an emergency life-history stage (ELHS) is not triggered.
formulaAllostatic overload Type 1 occurs when an animal is in a negative energy balance, specifically when the sum of all types of allostatic load exceeds resource availability (Eg).
formulaResource availability (Eg) represents a limit to the energy an animal can expend without entering a negative energy balance and must be measured in the same units as allostatic load.
claimThe most useful time interval for averaging energy expenditure to reflect allostatic load varies by species, sex, and season, based on the duration an animal can tolerate negative energy balance as part of its daily or seasonal routine.
claimAllostatic overload Type 2 occurs when an animal's allostatic load is chronically high, but the animal is not in a state of negative energy balance.