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Table 2 General characteristics and occurrence of musculoskeletal injuries in Brazilian jiu-jitsu practitioners

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

Variables Groups
G1 (Adolescents) G2 (Adults) G3 (Master)
Age (years) 15.0 (12.0 — 15.0) 25.0 (22.0 — 27.0)* 35.0 (32.8 — 38.0)*, #
Height (cm) 1.64 ± 0.11 1.74 ± 0.08* 1.75 ± 0.07*
Body weight (kg) 58.1 ± 13.6 76.6 ± 12.9* 89.9 ± 17.4 *, #
TP (months) 12.0 (12.0 — 13.0) 24.0 (12.0 — 48.0)* 36.0 (12.0 — 99.0)*, #
Exposure time (h) 8.00 (4.38 — 12.00) 5.00 (4.00 — 8.00)* 5.00 (4.00 — 7.30)*
Sit-and-reach test (cm) 26.4 ± 6.5 26.5 ± 9.0 23.7 ± 7.8
Hand-grip strenght (kgf) 27.5 ± 11.1 38.3 ± 11.3* 45.8 ± 11.0*, #
Injuries/ Practitioner 0.59 1.37 1.94
Injuries/ I. Practitioner 1.24 1.74 2.19
Injuries (cases) 36 108 103
  1. TP time of practice, Flexibility flexibility of back and leg muscles, Hand-grip strenght maximal isometric handgrip strenght, Injuries/I. Practitioner injury incidence per injured practitioner. Height, body weight, flexibility, and hand-grip strenght results are expressed in mean ± standard deviation, ANOVA and Student-Newman-Keuls test. Age, time of practice, and exposure time results are presented in median and interval between 25th and 75th percentile, ANOVA and Dunn test; * p < 0.05 vs. G1; # p < 0.05 vs. G2