## 4 Discussion  
Although it is true that there are numerous studies that describe the manifestations and relationships of body composition and some aspects of sports performance [6], to the best of the authors' knowledge, there is no previous research that relates body composition and sports performance in women's basketball [4] and elite women's volleyball with such a wide battery of tests. Therefore, one of the main objectives of the present comparative and descriptive study was to determine the variation in body composition throughout the competitive season of elite female basketball [41] and volleyball players [57], and the relationship established between body composition and sports performance and its variation throughout a high-level competitive season with regard to different variables related to their specialty. In this sense, body composition and upper and lower body explosive strength were measured by measuring jumping power in several variants, 20-meter acceleration capacity, sprint repetition ability, agility, and intermittent endurance capacity. In the authors' opinion, the results are consistent with the importance of these variables in both sport specialties [58; 59]. Figure 3: High quantitative changes established between disciplines and fitness tests. The main important findings of this study indicate the following: (a) a variation in mesomorphy in the volleyball group of 14.458%; (b) at the sporting level there are positive percentage differences in basketball of 11.524% in SJ, 10.564% in CMJ, 13.055% in DJ, and 63.485% in the Yoyo IRT (II), and in volleyball of 28.505% in Yoyo IRT (II); and (c) relating to the previous parameters, there was a high correlation between (i) %AM-SJ (r: \(-\)0.7508), %AM-CMJ (r: \(-\)0.7544), %AM-RSA (r: 0. 7738), and %AM-YoyoIRT (r: \(-\)0.8090), %FMM-RSA (r: \(-\)0.8051), %FMM-Illinois (r: \(-\)0.8243), and endomorphy-RSA (r: 0.7860) in basketball, and (ii) %FMM-ABK (r: 0.8304) in volleyball. In summary, our main results support the hypothesis that variation in anthropometric parameters is related to sports performance outcomes in elite female basketball and volleyball players [60]. No statistically significant changes (\(p>0.05\)) were found in any of the observed variables between the first data collection point (T1--September) and the second (T2--January), neither at the intergroup nor at the intragroup level based on [PERSON]'s correlation coefficient (<0. 10: non-existent; >0.10: weak; >0.39: moderate; >0.70: strong; >0.90: very strong) [61]. This is mainly due to the fact that these are high-level players with a long sporting career in which morphological changes, as long as there are no drastic modifications in their eating and/or sporting habits, remain relatively stable. Furthermore, the four months of separation between T1 and T2 would not be sufficient to provoke, as we have said, a disproportionate change. Nevertheless, the correlations obtained were statistically significant strong or very strong correlations [61]; at the intragroup level the correlation was 1.388%, and at the intergroup level it was 13.888% in basketball [62] and 5.555% in volleyball. Regarding the magnitude of the correlations found, we focus on those that are equal to or higher than 0.75, strong or very strong (Figure 4). We interpret this specific coefficient as a measure of the strength of the relationship in the context of the scientific question posed [63]. The results obtained illustrate (Tables 2 and 3) that in basketball, except for FMM, all the parameters studied showed a decrease in the results obtained at T1 and T2. In volleyball, on the other hand, an increase in the values obtained at both times (Table 3) can be observed, apart from BM. In general, there was no significant percentage increase or decrease in the body parameters measured except for mesomorphy in volleyball, which showed an increase of 14.458%.