Beyond Partial Integration: Toward a Cross-Level Organism Framework for Load, Regulation, Adaptation, and Chronicity

Abstract Human Restoration Theory (HRT) proposes that the human organism cannot be adequately understood as a collection of systems to which skeletal load-bearing is added as one more biomechanical variable. Rather, HRT treats load-bearing under gravity as a continuous organismic condition: the infrastructural problem through which movement, breathing, autonomic regulation, tissue adaptation, perception, compensation, and chronicity become organized. Existing scientific frameworks already provide powerful partial integrations. Network Physiology studies dynamic coordination among physiological systems; allostasis and active inference describe predictive regulation and resource allocation; ecological dynamics explains movement as an organism-task-environment relation; mechanobiology and mechanotherapy show that forces shape cellular and tissue behavior; contemporary pain models explain persistence beyond tissue damage; evolutionary medicine clarifies trade-offs, mismatch, and vulnerability; and degeneracy theory explains how biological systems remain robust through partially overlapping functions. Yet none of these frameworks fully links mechanical load, tissue adaptation, motor control, systems physiology, chronic pain, short- and long-term adaptation, and evolutionary vulnerability within a single causal architecture of the organized human organism under gravity. This paper positions HRT as a cross-level organizing proposal. Its central object is not the skeleton, posture, or movement technique, but the living organism as it solves the continuous problem of bearing itself under gravitational, developmental, environmental, and regulatory conditions. The proposed architecture is: Conditions -> Organization -> Cost -> Reliability -> Adaptation/Chronicity. The paper clarifies what HRT claims, what it does not claim, how it relates to existing frameworks, and how it can generate testable research predictions.