During 1983–1989, research coalesced around exposure-driven epidemiology, with prospective cohorts quantifying incidence and injury patterns across adult and youth sport settings. The dominant focus was on soccer injuries, the role of training load, exposure, and preseason conditioning as determinants of risk, and the identification of modifiable etiologic factors such as joint instability, muscle tightness, and rehabilitation gaps. Prevention strategies emerged early, emphasizing preseason screening, range of motion, and targeted strengthening to reduce injury burden, while economic and health outcomes highlighted days lost and healthcare costs associated with sports injuries. Injury patterns increasingly differed by age and gender, underscoring the need for context-specific prevention programs in youth and women's sports. Historical Significance: This period established a paradigm in which prevention rested on understanding exposure and modifiable risk factors, paving the way for structured conditioning and evidence-based injury reduction. Foundational studies and theoretical models introduced the idea that cognitive, physiological, attentional, and stress-history factors interact to shape injury risk, informing multi-faceted prevention frameworks. Empirical demonstrations that resistance training reduces injuries supported strength-based programs and informed cross-sport guidelines. The era culminated in translational work synthesizing research into practical prevention strategies and policy implications that informed subsequent guidelines.