## 1 Introduction  
The development of technology and the widespread use of the Global Positioning System (GPS) in soccer have allowed sports scientists to create profiles of the physical demands of young soccer players during matches. Recent studies report that U17 soccer players cover a total distance of 9000 to 11,000 m during a match [1, 2, 3]. Regarding the distance covered at speeds greater than 16 km/h, previous studies indicate it to be 10-12% [2, 4], while distances above 19.8 km/h constitute 6-7% of the total distance [1, 3]. Additionally, players execute various other actions during matches such as accelerations, decelerations, changes in direction, and jumps [5]. All these actions rely on the aerobic and anaerobic capacity of the players. Aerobic capacity is particularly important for player performance. Average heart rate values during a match [6] highlight the aerobic nature of the sport. However, player performance and match outcome depend on the intense actions performed during the game. High aerobic capacity has been reported to aid in quicker recovery between sprints [7, 8], faster resynthesis of phosphocreatine [9], and removal of fatigue-inducing factors such as hydrogen ions [8]. Recognizing its value, team coaches emphasize its development starting from adolescence. Aerobic capacity is assessed through various indicators such as maximal oxygen uptake (VO\({}_{\text{2 max}}\)), anaerobic threshold, and velocity at anaerobic threshold and can also be estimated through other variables such as distance covered in running tests [10; 11]. VO\({}_{\rm 2 max}\) refers to the maximum amount of oxygen an organism can uptake and utilize during maximal exertion. The gold standard for assessing VO\({}_{\rm 2 max}\) involves maximal laboratory tests using a treadmill [12]. During this assessment, other useful indicators for training purposes, such as speed and heart rate at VO\({}_{\rm 2 max}\), maximum heart rate, speed at anaerobic threshold, heart rate at anaerobic threshold, are also recorded. Laboratory measurement is highly reliable but has some drawbacks. It requires specialized equipment and personnel, and it is time-consuming when assessing a group of 25 individuals. These reasons led to the development of field tests aiming to estimate VO\({}_{\rm 2 max}\) and other indicators [10; 13]. Field tests estimate VO\({}_{\rm 2 max}\) from other indicators such as exercise time or distance covered by players. Therefore, the assessment is less precise, but it does not require expensive equipment or specialized personnel, and large groups of athletes can be measured in a short time (\(\sim\)25 min). Thus, for evaluating a soccer player's aerobic capacity, either laboratory tests or field tests can be used. It is logical to assume that since these tests assess the same physical capacity, their results should correlate. However, from the literature review, it appears that this relationship is not clear [14; 15; 16]. Specifically, in one study [15] on young soccer players comparing two field tests with laboratory tests, it was found that performance in the Yo-Yo intermittent endurance test (YYET) did not correlate with the VO\({}_{\rm 2 max}\) measured in the laboratory test. In contrast, performance in the 20m multistage shuttle run test correlated with VO\({}_{\rm 2 max}\). Additionally, [PERSON] et al. (2005) [16] observed that estimating VO\({}_{\rm 2 max}\) using the Yo-Yo endurance test differed significantly from its measurement in laboratory tests. However, [PERSON] et al. (2012) [17] found moderate correlations between VO\({}_{\rm 2 max}\) and performance in Yo-Yo intermittent recovery level 1 and 2 (YYIRT) tests and weak correlation with performance in the Yo-Yo endurance test. Furthermore, from the literature, it appears that the effect of anthropometric characteristics on aerobic tests such as the ones mentioned above is not clear. In a recent study [18], a negative correlation between body fat percentage and performance in the multistage shuttle run test was observed in professional soccer players.