International Comparison between the J-League Division 1 and European/South American Top League Players Regarding Participation Opportunities, According to the Generation

The aim of our investigation was to clarify the achievement situation and features regarding the experiences and results of players who take active parts in the highest ranked football leagues in Japan, Europe, and South American countries. The average age of players in J-League changed, showing an upward trend, and recorded a peak in the 2014 season (26.85 years), and was higher by 3.80 years than that of Dutch league, which had the lowest...