Abstract
In this study we investigated the incidence of lumber sports injuries and disorders in high school male
volleyball players. The subjects were 95 high school male volleyball players from the upper level of the district.
The survey period was one year from June 2022 to June 2023. The survey was conducted using a paper check
sheet, and coaches and players on each team were asked to record information about training and participation
in games on a daily basis, as well as records of sports injuries and injuries. Based on the data obtained, the
incidence of sports injuries and injuries per 1,000 Player Hours (PH) and 1,000 Athlete Exposure (AE) was
calculated. The number of hours of participation in the game was 50,777.0 hours and the number of EA was
16,211 in one year. There were a total of 22 sports injuries and injuries occurring during volleyball practice,
with an incidence of 0.41/1,000 PH and 1.3/1,000 AE. Of these, 19 occurred during training and 3 occurred
during matches. The most frequent location was the ankle (6 cases), followed by the lumbar region (5 cases). All
sports injuries and injuries to the lumbar region occurred during practice, with incidence rates of 0.10/1,000 PH
and 0.31/1,000 AE, with three non-temporary losses and two severe hourly losses. In addition, 4 out of 5 cases
that occurred in the lumbar region were slow-onset due to repeated loads. The incidence of sports injuries and
lower back injuries among high school male volleyball players was second only to ankle trauma, suggesting that
most of them were caused by injuries caused by repeated loads. These results suggest that low back disorders in
high school volleyball players can be prevented by learning correct form and performing proper basic training,
regardless of the level of competition.
