## 3 Results
However, jump height, speed max, and RPM did not differ significantly between the groups. Comparison of Anthropometric and Physiological Characteristics and Motor Performance between Club-Level and International-Level Female Rovers  
Table 2 presents the relevant comparisons between junior athletes at club level and those at international level. The junior club-level rowers had significantly larger skinfold measurements than their international-level peers: scapula (+3.36 mm, \(p\) = 0.029), suprailiac (+3.49 mm, \(p\) = 0.030), abdomen (+4.89 mm, \(p\) = 0.040), thigh (+6.12 mm, \(p\) = 0.016), and lower limb (+4.17 mm, \(p\) = 0.021). However, the junior international-level rowers developed significantly higher RPP (+0.30 W/kg, \(p\) = 0.046). Table 3 shows comparisons between older junior female rowers at club level and those at international level. The internationally ranked older juniors were significantly taller (+5.36 cm, \(p\) = 0.040) and heavier (+6.80 kg, \(p\) = 0.024), and they had a significantly longer arm spans (+8.60 cm, \(p\) = 0.002) and lower limb length (+5.75 cm, \(p\) = 0.010), BSA (0.21 m\({}^{2}\), \(p\) = 0.017), as well as significantly lower abdomen skinfold measurements (\(-3.53\), \(p\) = 0.018) than their peers with club level. On the rowing ergometer, the older international-level older juniors developed significantly higher power (+23.18 W, \(p\) = 0.039) and absolute values of VO2 max (+0.45 L/min) and covered 2000 m in significantly less time (\(-0.30\) min, \(p\) = 0.035). \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline  & \multicolumn{4}{c}{**Ranking Category**} & \multicolumn{2}{c}{**Difference**} \\ \cline{2-7}
**Parameter** & **International (N = 11)** & \multicolumn{2}{c}{**Club (N = 25)**} & \multicolumn{2}{c}{**Cohen’s \(d\)**} \\ \cline{2-7}
**Mean** & **SD** & **Mean** & **SD** & \(t\) & \(p\) & \\ \hline
**Scapula skinfold (mm)** & 12.36 & 2.77 & 15.72 & 4.50 & \(-\)2.28 & 0.029 & 0.89 \\
**Suprailiac skinfold (mm)** & 11.91 & 3.78 & 15.40 & 4.43 & \(-\)2.27 & 0.030 & 0.85 \\
**Abdomen skinfold (mm)** & 13.91 & 4.78 & 18.80 & 6.87 & \(-\)2.14 & 0.040 & 0.87 \\
**Thigh skinfold (mm)** & 20.00 & 6.47 & 26.12 & 6.79 & \(-\)2.53 & 0.016 & 0.79 \\
**Lower leg skinfold (mm)** & 14.00 & 5.42 & 18.17 & 4.41 & \(-\)2.41 & 0.021 & 0.83 \\
**RPP (W/kg)** & 3.21 & 0.45 & 2.91 & 0.37 & 2.08 & 0.046 & 0.84 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Comparison of arithmetic means of younger junior women’s anthropometric, physiological and motoric parameters depending on the ranking categories. As for the senior females, the international-level rowers had a significantly larger/smaller skin suprailiac skin fold (2.00 mm, \(p\) = 0.049) than the club-level rowers. Additionally, although the evidence was not strong enough to meet the pre-established criterion for statistical significance, the internationally ranked senior rowers had better values for most of the analyzed anthropometric traits than their club level peers (body height, body mass, BFP, SMM percent, BMI, sitting height, arm span, lower limb length, BSA, other skin folds). Relations between Anthropometric and Physiological Characteristics of the Female Rowing Athletes in Different Stages of the Sports Careers  
In all age categories, the length of the athletes' sports career was generally not associated with significant differences in anthropometric and physiological characteristics. Juniors with shorter sports careers were significantly taller (+6.30 cm, \(p\) = 0.011) and had significantly longer arm span (+6.40 cm, \(p\) = 0.016) and lower limb length (+4.10 cm, \(p\) = 0.043) than their age-group peers with longer careers. Among older juniors, those with shorter sports careers had significantly larger suprailiac skinfolds (+3.50 mm, \(p\) = 0.038) than those with longer careers. As for the seniors, those with shorter sports careers had significantly longer arm spans (+7.90 cm, \(p\) = 0.029) and larger suprailiac skinfolds (+2.00 mm, \(p\) = 0.13).