A prospective cohort study on injuries among intensively physically active high school students

Abstract

BACKGROUND - The leading cause of nonfatal injuries in age group 14‐19 is sports injuries. Purpose of the study was to determine the association between intense physical activity and injury and to identify the circumstances and environment in which injuries are most likely to occur.

METHODS - A prospective cohort study included 698 high school students 15‐19 years old, divided into those exposed and those unexposed to intense physical activity. The international standard questionnaire about physical activity (International Physical Activity Questionnaire—IPAQ) and the metabolic equivalent task (MET) scores were used.

RESULTS - The risk of injuries was 7 times higher (relative risk [RR]: 7.041; 95% confidence interval [CI]: 6.071, 8.187) and the risk of injuries requiring treatment in health facilities was 15 times higher (RR: 14.717; 95% CI: 10.652, 20.592) in the intensely physically active adolescents. The risk of gaining sports injuries was 11 times higher in the exposed group (RR: 11.212; 95% CI: 9.013, 14.074), with a significantly higher incidence rate (Inc.) among men (82.9 per 100). Most injuries occurred in football (Inc. 4.4 per 1000 hours), volleyball (Inc. 3.9 per 1000 hours), and boxing/kickboxing (Inc. 3.7 per 1000 hours).

CONCLUSIONS - Intensely physically active high school students have a much higher risk of injury, which usually occurs during training or a match.