Using a data set for all sumo wrestlers in the post-World War II period, this paper investigates how wrestlers’ body mass index (BMI) is associated with wrestlers’ winning rate and absence rate. Further, the effect of BMI is compared between an early period (before the emergence of foreign...

Based on prefecture-level panel data from Japan for 2010 and 2012, this paper investigates how the 2011 Fukushima nuclear accident influenced the body mass index (BMI) of students aged between 5 and 17 years old. A differences-in-differences approach was used to show that (1) students’ BMIs...

In the Japanese Professional Baseball League, the starting pitcher is announced prior to the game in the Pacific League but not in the Central League. I attempt to investigate how the release of information concerning a starting pitcher prior to the game affects attendance. My major findings...

This paper investigates whether and the extent to which the Fukushima nuclear accident 2011 affected human behavior based on a natural experiment with the Japanese Professional Baseball League. Comparing the duration of games in the 2010 and 2011 seasons reveals the following. (1) The duration...

In the Japanese Professional Baseball League, the starting pitcher is announced prior to the game in the Pacific League but not in the Central League. I attempt to investigate how the release of information concerning a starting pitcher prior to the game affects attendance. My major findings...

Sumo wrestling is a traditional fighting sport in Japan and has been popular since the 18th century (the Edo period). Using a data set for all sumo wrestlers in the post-World War II period, this paper investigates how wrestlers’ body mass index (BMI) is associated with their win rate and...