Ninja warrior training holds significant risk for musculoskeletal injuries, most commonly overuse and upper extremity injury. The rings/laches are particularly prone to injury, suggesting that adequate technical skill assessment prior to execution may be warranted. Additionally, increased BMI, higher VAS at time of injury, and 5 or more training sessions per week were found to be associated with delayed return to sport.
LINDNER et al. (Sun,) studied this question.