**1. Introduction**

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The muscle injury risk is a major concern for soccer players and clubs in terms of health, safety, performance, and cost. Data in scientific literature must be made available through an effective muscle injury surveillance system, and knowledge of the factors that influence muscle injury is required. There is a need to identify the injury risks in soccer players and their respective dependent and independent variables, which are expected to differ in each specific population. Therefore epidemiological and etiological muscle injury data for international professional soccer need to be captured. The rates and characteristics of soccer muscle injuries during matches and training in top-level international tournaments such as English (Hawkins et al., 2001), Swedish (Hagglund et al., 2006), Norwegian (Andersen et al., 2004) league Champion‐ ships, European Championships (Ekstrand et al., 2011) and World Cups (Dvorak et al., 2011) have been well documented; however only one study (Chamari et al., 2012) has focused on the muscle injury-rates of Muslim soccer players during the holy month of Ramadan. The first part of this chapter is dedicated to present muscle injury rates in soccer. The main aim of the present book chapter is presenting and discussing the muscle injury rate during the holy month of Ramadan its related possible causes. By providing a such analysis, it is hoped that this might help coaches and scientists to understand and choose a more efficient planning and manipu‐ lation of the player's internal training load during the Ramadan period in order to try to avoid muscles injuries.
