The International Journal of Sports Science – RICYDE- is an on-line magazine with the objective of offering scientific based articles, aiming to develop a deep knowledge of Physical Activity and Sports Science. The specific contents of this journal will deny any simple popular articles, and those with the only aim of exposing opinions and not conclusions based on investigation. The International Journal of Sport Science – RICYDE- will only publish original works and reviews that apart from the previous stated conditions have a specific structure, inherent to the contents of scientific articles. RICYDE will have the condition of a free open Internet Journal.