## 4 Discussion
This finding suggests that while the SL-CMJ provides valuable insights into unilateral neuromuscular performance and the asymmetry between limbs, it is less sensitive to detect small improvements in performance compared to bilateral jumps and linear sprint tests. This may be due to the increased variability inherent in single leg movements, which require greater postural stability and coordination [21; 23]. Therefore, this test should not be used isolated, as a single measure of neuromuscular improvement. Other authors have found high reliability in more innovative jumping and sprinting tests to assess neuromuscular performance. [PERSON] et al. [37] tried to replicate real time basketball movements on court by combining both horizontal and vertical movements, through penetration to the basket with a layup. However, due to the low sample size (n = 22) and the characteristics of the group (young players), we must be cautious to avoid incorrect generalizations [37]. [PERSON] et al. [38] also analyzed a different jumping test, finding a new running single leg jump as a valid and reliable tool. Similarly, [PERSON] et al. [11] pointed out a new multidirectional repeated sprinting test as a valid and a reliable tool to analyze neuromuscular performance in basketball players, able to discriminate between professional and non-professional players. The SL-CMJ, particularly the left-leg jump, has greater variability. Although it provides useful information on unilateral strength and asymmetry, its higher MDC values suggest that observed improvements may need to be larger to confidently attribute them to actual performance gains rather than measurement error. The CMJ and SJ maintain high relative reliability, reinforcing their value as key assessments for evaluating lower limb power in basketball players. This could be useful, since professional players are normally assessed though these jump several times, therefore the learning curve is already achieved [36]. When analyzing absolute and relative reliability based on players' specific playing position, all neuromuscular tests showed an excellent absolute and relative reliability, however subtle differences were revealed between Bigs and Guards. Bigs exhibited greater absolute reliability in SJ, CMJ, and SL-CMJ, while Guards only outperformed in CMJ. In terms of relative reliability, Bigs showed higher ICC values than Guards in SJ, CMJ, and CMJA and in 10 and 20 m sprinting tests, while Guards showed greater relative reliability in SL-CMJ for both legs and in the 5 m sprint tests. In scientific literature, several authors have analyzed validity and reliability of different jumping [5; 7; 9; 37] and linear sprinting tests [11; 39; 40] for basketball players. However, the analysis based on the specific playing position has been usually approached from a performance-related differences perspective [12; 13; 41]. Therefore, from our knowledge, this is the first study that aims to address absolute and relative reliability of jumping and linear sprinting specifically for Bigs and Guards players. In basketball, sprints are not only performed linearly but also occur with changes in direction (COD). One of the main limitations of this study is not being able to assess sprint performance through a COD test. Therefore, we are missing an important piece the neuromuscular performance in basketball. On the other hand, due to the high number of matches and the difficulty in adjusting training loads to replicate two different assessments days, it has not allowed establishing inter-day reliability. In addition, even though our sample is very interesting since it compromises players from different Spanish and German leagues, data regarding years of training experience could allow avoiding possible participant differences. However, we have ensured that the average age of basketball players is comparable across groups, minimizing potential biases related to age differences.