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Table 4 Sports injuries according to nature (type), anatomical location, etiological mechanisms, and age group

From: Could current factors be associated with retrospective sports injuries in Brazilian jiu-jitsu? A cross-sectional study

Variables Age group Total
G1 G2 G3
Nature (type) Muscle 4 (11.1)Aa 28 (25.9)ABb 40 (38.8)Bb 72 (29.0)
Joint 29 (80.6)Bb 73 (67.6) Ac 48 (46.6)Ab 150 (61.0)
Bone 3 (8.3)Aa 3 (2.7)Aa 4 (3.9)Aa 10 (4.0)
Tendon 0 (0.0)Aa 4 (3.7)ABa 11 (10.7)Ba 15 (6.0)
Total 36 (14.6) 108 (43.7) 103 (41.7) 247
Location Head/ Neck 0 (0.0)Aa 1 (0.9)Aa 5 (4.9)Aa 6 (2.4)
Trunk 3 (8.3)Aa 13 (12.0)Ab 15 (14.6)Aa 31 (12.6)
Upper Limbs 17 (47.2)Ab 51 (47.2)Ac 45 (43.7)Ab 113 (45.7)
Lower Limbs 16 (44.4)Ab 43 (39.8)Ac 38 (36.9)Ab 97 (39.3)
Total 36 (14.6) 108 (43.7) 103 (41.7) 247
Mechanism Choke/ Arm Wrench 6 (16.7)Aa 18 (16.7)Aab 13 (12.6)Aab 37 (15.0)
Takedown/ Attack 5 (13.9)Aa 26 (24.1)Ab 26 (25.2)Ab 57 (23.1)
Sweep 1 (2.8)Aa 23 (21.3)Bb 21 (20.4)Bb 45 (18.2)
Tumbling/ Trauma 21 (58.3)Bb 17 (15.7)Aab 20 (19.4)Ab 58 (23.5)
Physical Training 2 (5.6)Aa 18 (16.7) Aab 19 (18.4) Ab 39 (15.8)
Others 1 (2.8)Aa 6 (5.6)Aa 4 (3.9)Aa 11 (4.5)
Total 36 (14.6) 108 (43.7) 103 (41.7) 247
  1. A, B p < 0.05 to horizontal comparisons, between different groups; a, b p < 0.05 to vertical comparisons, within group. Goodman’s test for contrasts between and within multinomial populations