Which of the following is a factor that sports medicine research aims to improve?

Sports medicine research primarily focuses on various aspects related to the health, performance, and well-being of athletes. One of the critical areas it aims to enhance is injury treatment protocols. This involves studying the mechanisms of injuries, developing effective rehabilitation methods, and improving overall recovery strategies.

By focusing on injury treatment protocols, sports medicine practitioners can offer evidence-based recommendations that help athletes recover faster and prevent future injuries. This research incorporates advancements in medical technology, rehabilitation science, and exercise physiology, leading to better outcomes for athletes.

In contrast, the other options, such as athlete marketing, fan engagement strategies, and team branding, while important in the realm of sports, fall under different domains, primarily related to sports management, marketing, or public relations. Their focus is more on the commercial aspects and fan relations than on improving physical health and performance through scientific research.