Injury Trends in a Japanese Collegiate American Football League, 2018-2024

Injury data from 2018 to 2023 served as the baseline for a study in the Tohoku Collegiate American Football League in Japan. The dataset was created by Yasuyuki Umezaki and last updated on 2026-04-30. It was used to explore the impact of a data-feedback workshop on injury reporting and trends in the 2024 season.

Use Cases

• Analyze changes in injury type proportions based on the reported decrease in muscle cramps and increase in head injuries.
• Study the relationship between safety awareness workshops and self-reported participant perceptions.
• Evaluate injury rate trends per game using the reported Incidence Rate Ratio of 1.22.
• Assess the practical application of surveillance data feedback for resource-limited sports organizations.

Strengths

• Data covers a 6-year baseline period from 2018 to 2023, plus the 2024 intervention season.
• Includes specific statistical results, such as a muscle cramp proportion decrease from 37.2% to 7.7% and a head injury increase from 6.2% to 15.4%.
• Released under a permissive CC-BY-4.0 license, allowing for broad reuse.

Limitations

• The study design was non-randomized and uncontrolled, limiting causal inference.
• The post-intervention sample size for the 2024 season is described as small.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

figshare, author Yasuyuki Umezaki.

Collection Method

Mixed-methods study comprising a cross-sectional survey and a pre-post ecological analysis of official injury reports.

Time Range

2018-2024

Freshness

Last updated 2026-04-30 05:39:43; freshness should be verified.

Geography

Tohoku Collegiate American Football League, Japan