Estimating the age-conditioned average treatment effects curves: An application for assessing load-management strategies in the NBA
This work addresses the need for granular performance analysis in competitive sports, offering incremental improvements in methodology for assessing treatment effects like rest days on athletes.
The research tackled the problem of analyzing athlete performance dynamics by introducing a framework to estimate age-specific treatment effects, using NBA data to show that tailored rest periods positively impact performance, suggesting a reevaluation of load management strategies.
In the realm of competitive sports, understanding the performance dynamics of athletes, represented by the age curve (showing progression, peak, and decline), is vital. Our research introduces a novel framework for quantifying age-specific treatment effects, enhancing the granularity of performance trajectory analysis. Firstly, we propose a methodology for estimating the age curve using game-level data, diverging from traditional season-level data approaches, and tackling its inherent complexities with a meta-learner framework that leverages advanced machine learning models. This approach uncovers intricate non-linear patterns missed by existing methods. Secondly, our framework enables the identification of causal effects, allowing for a detailed examination of age curves under various conditions. By defining the Age-Conditioned Treatment Effect (ACTE), we facilitate the exploration of causal relationships regarding treatment impacts at specific ages. Finally, applying this methodology to study the effects of rest days on performance metrics, particularly across different ages, offers valuable insights into load management strategies' effectiveness. Our findings underscore the importance of tailored rest periods, highlighting their positive impact on athlete performance and suggesting a reevaluation of current management practices for optimizing athlete performance.