# Driven by Dopamine: Genetic Insights into Motivation and Performance in Sports and Esports

## TL;DR

This paper reviews how dopamine-related genes influence motivation and performance in sports and esports, highlighting gaps in current research.

## Contribution

It synthesizes findings on dopaminergic gene polymorphisms and their links to athletic and cognitive performance, emphasizing limitations in esports research.

## Key findings

- DRD2 and DRD4 gene variants are linked to novelty seeking and stress coping.
- COMT Val158Met polymorphism affects prefrontal dopamine levels and executive functions.
- Research on esports players is limited, making conclusions speculative.

## Abstract

Background/Objectives: The dopaminergic system regulates motivation, executive functions, motor learning, and emotional responses—processes that are key in both sport and esports. Although many studies analyse dopaminergic gene polymorphisms, their impact on psychophysical predispositions remains unclear. This narrative review aims to summarise current knowledge about the mechanisms of dopamine action and genetic determinants that may influence athletic and cognitive performance. Methods: The PubMed, Scopus, and Web of Science databases (publications from January 2010 to December 2025) were searched using keywords related to the DRD1–DRD5, COMT, SLC6A3/DAT1, and TH genes, as well as the terms ‘sport’ and ‘esport.’ Studies of athletes were included in which the relationship between dopaminergic polymorphisms and motivational and personality traits was assessed, and the results of neuroimaging and epigenetic studies were also considered. Results: Dopaminergic polymorphisms are associated with differences in reward processing, cognitive flexibility, motivation, and stress resilience. The most essential critical effects concern the DRD2 and DRD4 variants, which are associated with novelty seeking, reward dependence, and coping with stress. The COMT Val158Met polymorphism affects dopamine levels in the prefrontal cortex, modulating executive functions. The effects of individual polymorphisms are moderate, and conclusions regarding esports remain speculative due to limited research in this area. Conclusions: Dopaminergic predispositions involve interactions among genetics, neural activity, and the environment. However, current evidence is limited by small sample sizes, a predominance of European populations, scarce data on esports players, and difficulties in separating genetic effects from training-related adaptations.