Team sport is a category of sports that involves individuals in teams to compete or cooperate to entertain their audience. The teams act towards a common goal, usually by outscoring the opposing team.
Norms define the social structure of sport teams and are an important source of social influence among youth athletes (Carron & Eys, 2012). Group norms reflect expectations for behavior that the members of the group believe to be acceptable or inappropriate across the contexts relevant to team involvement.
Tracking systems are increasingly used in team sports to capture athlete external load data and provide derived metrics that can be used to describe, plan, monitor and evaluate training and competition characteristics within a specific sport . It is imperative for practitioners to consider the validity, accuracy and precision of the various tracking systems and the metrics generated by these technologies, along with their ecological validity.
Metric selection for a given sport is dependent upon a variety of factors, including playing dimensions, player density, position characteristics, game rules, timing structure and time courses. These variables may also differ between different team sports, which can lead to confusion over the usefulness of tracking system derived metrics for a particular sport.
Physical output of team sport athletes is incredibly volatile, making it difficult to detect meaningful changes over a given period of time using aggregate parameters such as absolute total high-intensity running or percentage of time performing high-intensity running. To identify periods of increased intensity, moving minute intervals have been utilised, however, these are often arbitrary and focus only on the rolling average or peak of a metric.