The Research Hub
The intellectual home of a formally documented competitive pursuit. Research-grade rigor. Pre-NIH affiliated. Formal findings, active studies, theoretical frameworks, and institutional affiliations.
What is The Unfinished Athlete?
The Unfinished Athlete is a live, longitudinal study of one aging competitor attempting something most people would call unrealistic — and documenting it with research-grade rigor. It is not a retrospective story. It is a live experiment.
At 45 years old, Scott Felluss is a PhD performance researcher who is also the subject of his own NIH study. He is a competitive tennis player. He submitted wild card applications to Wimbledon, the US Open, and the Australian Open simultaneously. The Unfinished Athlete is what it looks like when the pursuit becomes fully visible — the research, the training, the competition, and the documentation all happening in real time.
This is the formal record of that attempt. The findings, the frameworks, the active studies, and the institutional partnerships that support a serious competitive identity that never left.
Felluss Institute Pilot Study
Audio documentation of the NIH pilot study on competitive return to professional tennis.
Longitudinal Performance Study — Phase I
Six formally named findings from the first phase of the longitudinal study on competitive return to professional tennis. Each finding is documented with formal methodology and available in full.
Tempo Boredom Effect
A documented phenomenon in which sustained high-tempo training environments produce a paradoxical reduction in competitive arousal, resulting in suboptimal match performance despite elevated physical readiness.
Existential Flatness Under Competition
A state in which competitive athletes report a dissociation between physical performance capacity and motivational engagement, characterized by technically proficient but affectively disengaged execution.
Constraint Saturation State Change
The threshold at which the accumulation of performance constraints produces a qualitative shift in athlete decision-making architecture, moving from adaptive to maladaptive constraint navigation.
SDT Criterion Shift in Rehabilitation
A documented shift in self-determination theory criterion weighting during rehabilitation phases, in which autonomy motivation temporarily supersedes competence motivation as the primary driver of training adherence.
Ideomotor Pendulum Variability
Measurable variance in ideomotor response patterns during high-pressure competitive scenarios, suggesting that mental rehearsal fidelity degrades non-linearly under competitive stress.
Efference Copies Layered Protocol Findings
Findings from the application of a layered efference copy protocol to competitive tennis performance, documenting the relationship between anticipated and actual sensory feedback under match conditions.
The Professional Circuit Chapter
The second phase of the longitudinal study is currently active. This chapter documents the competitive return to the professional circuit — the application process, the training protocol, and the performance data as it is generated. The study is running. The documentation is live.
Study status: Running · Data collection: Active · Documentation: Live
Formally Named Frameworks
Adversarial Margin Expansion
Full framework →A formally named performance framework developed at the Felluss Institute, describing the systematic process by which competitive athletes expand their functional performance margins through deliberate exposure to adversarial training conditions. The framework provides a structured protocol for identifying, quantifying, and expanding the margins between current performance capacity and competitive demand.
The Control Loop Framework
Full framework →A theoretical framework for understanding the feedback architecture of competitive performance, describing the iterative cycle of action, sensory feedback, comparison, and adjustment that governs skilled athletic execution under pressure. The framework integrates efference copy theory with self-determination theory to produce a unified model of competitive control.
Opacity Training
Full framework →A formally named training variable describing a class of practice conditions in which the relationship between training inputs and performance outputs is deliberately obscured, creating conditions of productive uncertainty that enhance adaptive capacity and competitive resilience.
Affiliated Institutions
NIH Pilot Study (Completed)
National Institutes of Health — completed pilot study on competitive return to professional tennis, submitted for funding consideration
Stanford University
Research collaboration — performance psychology and adversarial training methodology
University of Lund
Marie Curie Fellowship application — European research framework
Felluss Institute for Adversarial Performance
Founding institution — primary research and documentation center
Papers & Publications
In Submission
Adversarial Margin Expansion: A Formal Framework for Competitive Performance Enhancement
Opacity Training as a Performance Variable: Methodology and Preliminary Findings
Published Findings
Study 001: Six Findings from the Longitudinal Performance Study — Phase I
Efference Copies Layered Protocol: Documentation and Outcomes
Substack Essays
The Control Loop — public-facing research dissemination
Available at thecontrolloop.substack.com