Physiological Reserve
How much capacity remains beyond everyday needs?
Physiological reserve generally refers to capacity available beyond usual demands. Discussing reserve requires specifying the organ or functional domain and the task or challenge of interest.
Scientific concept · UpdatedCapacity beyond everyday demand
Physical-resilience research discusses physiological reserve as capacity that may contribute to a response to a stressor. Reserve is one part of this account, not a direct observation of recovery itself.[1]
Capacity and performance
Available capacity and what happens after a disturbance are related questions. The distinction helps explain why reserve and resilience are not interchangeable terms.[1]
In geriatric care, tests of reserve can help estimate recovery potential. Repeated observations around an actual health stressor address a different question: how a function changes over time. The stressor itself must also be described.[3]
Name the capacity under discussion
Cognitive aging research distinguishes cognitive reserve, brain reserve and brain maintenance. This vocabulary helps within its domain; it should not be substituted for a measure of exercise capacity or for whole-body physiological reserve.[4]
Avoid the single-battery metaphor
Reserve needs to be discussed and measured for a specified function. These concepts and studies help readers identify appropriate questions and observation methods.
Reserve and resilience are related. Reserve concerns available capacity; resilience also concerns performance after a disturbance.
Continue reading
Why Is Rest Not the Same as Recovery?
Stopping an activity creates an opportunity to recover. Whether recovery occurs depends on what changes in feeling, function or performance.
What Is Resilience Nutrition?
Understanding nutrition through adaptation, recovery and reserve: a working framework, selected studies and the questions that make evidence useful.
Models of Adaptation: What Different Frameworks Explain
Predictive regulation, cumulative costs, response ranges and resilience trajectories.
TAP Human Adaptation Framework
A conceptual framework connecting demands, predictive regulation and function over time—with a place for reserve, recovery and accumulating costs.
Are Recovery and Resilience the Same Thing?
Recovery describes a process of change. Resilience concerns the capacity to meet a disturbance. Following a response helps connect the two.
Can Underfueling Affect Recovery?
Energy availability, muscle protein synthesis and performance: what controlled studies tell us about underfueling—and how to read the recovery claim.
How Are Physiological Reserve and Resilience Related?
Reserve can support resilience. Understanding the connection means separating available capacity from the response to a particular challenge.
What Counts as Evidence That Nutrition Supports Recovery?
A clear recovery claim names the people, challenge, nutritional intervention, comparator and outcome. Four research examples show how to read the evidence.
Core reading
- Physical Resilience in Older Adults: Systematic Review and Development of an Emerging Construct ↗
Heather E. Whitson · Wei Duan-Porter · Kenneth E. Schmader · Miriam C. Morey · Harvey J. Cohen · Cathleen S. Colón-Emeric
Study record & citations
The Journals of Gerontology: Series A · 2016 - Protective and damaging effects of stress mediators ↗
Bruce S. McEwen
Study record & citations
New England Journal of Medicine · 1998 - Resilience in Clinical Care: Getting a Grip on the Recovery Potential of Older Adults ↗
Sanne M. W. Gijzel · Heather E. Whitson · Ingrid A. van de Leemput · Marten Scheffer · Dieneke van Asselt · Jerrald L. Rector · Marcel G. M. Olde Rikkert · René J. F. Melis
Study record & citations
Journal of the American Geriatrics Society · 2019 - Whitepaper: Defining and investigating cognitive reserve, brain reserve, and brain maintenance ↗
Yaakov Stern · Eider M. Arenaza‐Urquijo · David Bartrés‐Faz · Sylvie Belleville · Marc Cantilon · Gael Chetelat · Michael Ewers · Nicolai Franzmeier · Gerd Kempermann · William S. Kremen · Ozioma Okonkwo · Nikolaos Scarmeas · Anja Soldan · Chinedu Udeh‐Momoh · Michael Valenzuela · Prashanthi Vemuri · Eero Vuoksimaa · and the Reserve, Resilience and Protective Factors PIA Empirical Definitions and Conceptual Frameworks Workgroup
Study record & citations
Alzheimer's & Dementia · 2020
Editorial & review record
Record for v0.3 · Updated
Editorial responsibility: TAP Editorial Team
Scientific review
Not yet scientifically reviewed
Editorial note
Under the editorial responsibility of the TAP Editorial Team, this publication used AI assistance for content organization and editing. Scientific review is recorded separately on this page.
Download detailed editorial record (JSON) ↓
How responsibilities and review are recorded ↗Founded and supported by Resilio.
Revision history
- · v0.2
Added the distinction between reserve assessment and observed recovery, and clarified domain-specific reserve terminology.