Knowledge Tree
Relations (1)
related 2.81 — strongly supporting 6 facts
The relationship between allostatic load and glucocorticoid levels is defined by the original allostasis model's prediction of their correlation [1], which has been subject to empirical testing [2] and theoretical refinement suggesting that glucocorticoids may instead correlate with the Perceived Resource Potential (PRP) {fact:3, fact:4} or be influenced by high energetic requirements {fact:1, fact:5}.
Facts (6)
Sources
Allostasis revisited: A perception, variation, and risk framework frontiersin.org 6 facts
claimResearch assessing the relationship between animal energetics and hallmarks of allostatic load, such as circulating glucocorticoid levels, is limited according to McEwen and Wingfield (2003).
referenceThe hypothesis that variation in allostatic load is correlated with mediators such as plasma glucocorticoid levels was tested in birds and tentatively rejected by Word et al. (2022).
claimThe original model of allostasis predicted that blood glucocorticoid levels should change in correlation with allostatic load.
claimThe Perceived Resource Potential (PRP) describes the gap between allostatic load (Eload) and resource availability (Ecr), and is proposed to correlate with glucocorticoid levels rather than allostatic load itself.
claimThe PRP describes the gap between allostatic load and resource availability, and is proposed to correlate with glucocorticoid levels rather than allostatic load itself.
referenceWord et al. (2022) suggest that the absence of a clear correlation between allostatic load and glucocorticoid levels in previous studies may be explained by cases where energetic requirements (Eg) are very high, causing changes in allostatic load to constitute only proportionally minor changes in the Potential Resource Pool (PRP).