RANDOMIZED CONTROLLED TRIAL · DIRECT BJJ

School-Based BJJ Randomized Trial

Population

88 sixth-grade boys enrolled; 80 analyzed.

Intervention

Brazilian Jiu-Jitsu compared with regular physical education, 12 weeks, two classes per week.

Reported outcome

Teacher-rated emotional symptoms p=.007; hyperactivity/inattention p<.001; total difficulties p=.002; externalizing p=.001, η²=.07.

Supports

One specific school-program result on selected behavioral measures.

Does not support

ADHD treatment, all children, SSBJJ-specific effectiveness, or individual outcome guarantees.

Verified

2026-08-18 · review again 2027-08-18

Read the primary source · Return to the evidence explanation