# Effects of Extracurricular Sports in Prepubertal and Pubertal Girls
## 3 Results  
The outcomes regarding the body composition are displayed in Table 1. Prepubertal girls showed a lower BMI (\(p\) < 0.05; ES = 0.66-1.02), fat mass (in both percentage (\(p\) < 0.05; ES = 0.28%-0.62%) and kilograms (\(p\) < 0.05; ES = 0.91-1.37 kg)) and muscle mass (in kilograms; \(p\) < 0.05; ES = 1.75-2.16 kg) values than pubertal girls regardless of the sports typology. Prepubertal girls also revealed a lower muscle mass in kilograms (\(p\) < 0.05) in their body trunk, both of their arms, and both of their legs than pubertal girls regardless of the sport typology. Finally, PRE-ISs showed a higher muscle mass (in percentage) than PUB-ISs and lower fat mass (in percentage) than PUB-ISs in their body trunks, both of their arms, and both of their legs (\(p\) < 0.05). PRE-CSs also displayed a lower fat mass (in percentage) in these three body segments than PUB-CSs, but significant differences were found only for the right leg (\(p\) < 0.05). The comparisons between collective and individual sports revealed PRE-CSs to have a significantly higher BMI (+1.21%; \(p\) < 0.05; ES = 0.36; 95% CI: 0.41%-2.01%), fat mass (in percentage (\(p\) < 0.05; ES = 0.26; CI: 0.16%-2.74%) and kilograms (\(p\) < 0.05; ES = 0.49; CI: 1.16-3.56 kg)), muscle mass (in kilograms; \(p\) < 0.05; ES = 0.65; CI: 2.83-5.62 kg), and muscle mass in the three body sections (trunk, arms, and legs; \(p\) < 0.05) than PRE-ISs. On the contrary, PUB-CSs did not show significant differences in their body composition in comparison to PUB-ISs, except in the percentage of fat mass in their right legs (\(-\)1.86%; \(p\) < 0.05; ES = 0,30; CI: between \(-\)0.05% and \(-\)3.76%). The results of the respiratory variables are presented in Table 2. Prepubertal girls displayed significant lower values than pubertal girls in all respiratory variables (\(p\) < 0.05; ES = 1.23-2.31) except FEV1_FVC (\(p\) > 0.05) regardless the sport typology. The comparisons between sport typologies revealed that PRE-CSs had higher outcomes than PRE-ISs for FVC, FEV1, PEF, and FEE2575 (\(p\) < 0.05; ES = 0.61-0.71) but not for FEV1_FVC (\(-\)0.12%; \(p\) > 0.05; ES = 0.02; CI: between \(-\)1.60 and 1.34). On the contrary, PUB-CSs and PUB-ISs did not show significant differences in any of the studied variables. The outcomes of the physical tests are displayed in Table 3. Prepubertalal girls showed a lower handgrip (kg), Course Navette test score (stages), and vertical jump (cm) performance than pubertal girls (\(p\) < 0.05; ES = 0.80-2.04) regardless of the sport typology. Furthermore, PRE-ISs also showed significantly higher values for the Course Navette (percentile) and vertical jump (percentile) (\(p\) < 0.05; ES = 0.55-0.78) tests than PUB-ISs. The comparison according to the sport typology revealed PRE-CSs to get significant higher values in the handgrip (+3.72 kg; \(p\) < 0.05; ES = 0.67; CI: 2.51-4.92), handgrip (percentile; \(p\) < 0.05; ES = 0.24; CI: 0.47-14.50) and Course Navette (stages; \(p\) < 0.05; ES = 0.49; CI: 0.40-1.13) tests but significant lower values for vertical jump (percentile; \(p\) < 0,05; ES = 0.33; CI: 1.54-15.52%) than PRE-ISs. No significant differences were found in the remaining variables (\(p\) > 0.05; ES = 0.04-0.13). Finally, PUB-CSs and PUB-ISs did not display significant differences in any of the studied physical variables (\(p\) > 0.05; ES = 0.07-0.39).