Silva Ana Filipa, Alvurdu Sumer, Akyildiz Zeki, Clemente Filipe Manuel
Escola Superior Desporto e Lazer, Instituto Politécnico de Viana do Castelo, Rua Escola Industrial e Comercial de Nun'Álvares, 4900-347 Viana do Castelo, Portugal.
The Research Centre in Sports Sciences, Health Sciences and Human Development (CIDESD), 5001-801 Vila Real, Portugal.
Biology (Basel). 2022 Jan 27;11(2):197. doi: 10.3390/biology11020197.
This study aimed to determine the relationships of locomotor profile (combination of a player's maximal oxygen uptake and running economy)-measured by the final velocity attained at 30-15 Intermittent Fitness Test (V) and the anaerobic speed reserve (ASR)-with the body composition, countermovement jump (CMJ), sprinting performances, and change-of-direction (COD) ability of youth soccer players. A cross-sectional study design was implemented. A total of 124 youth soccer players from different age groups (15, 16, 17, 18, and 19 years old) were voluntarily recruited. ASR was determined based on the difference between maximal sprint speed (MSS) and V. Players were tested for the following measures: (i) body composition (body mass and body fat percentage); (ii) CMJ (height of jump); (iii) sprinting time measured at 5, 10, 15, 20, 25, and 30 m; (iv) MSS measured in the best split time (5 m) over the 30 m test; (v) COD ability (time, asymmetry index); and (vi) final velocity at 30-15 IFT (V). A Pearson product-moment correlation test was used to examine the relationships. Height and body mass exhibited large correlations with V (r = 0.835 and r = 0.699, respectively) and small correlations with ASR (r = 0.177 and r = 0.256, respectively). The CMJ was largely correlated with V (r = 0.631 to r = 0.650) while presenting small correlations with ASR (r = 0.227 to r = 0.232). Both V and ASR had moderate (r = 0.3 to r = 0.5) correlations with sprinting time at different distances and very large correlations with MSS (r = 0.797 to r = 0.866). The COD time was largely correlated with V (r = 0.765 and r = 0.775) while exhibiting small-to-moderate correlations with ASR (r = -0.279 and r = -0.301). In conclusion, it was found that locomotor performance at 30-15 V presents high levels of correlation with anthropometry and physical fitness; ASR also presents correlations with these variables, but they are smaller. This suggest that ASR is an independent variable that should be considered for inclusion in information for characterizing players' capacities.
本研究旨在确定通过30-15间歇体能测试中达到的最终速度（V）和无氧速度储备（ASR）所测量的运动能力概况（运动员最大摄氧量和跑步经济性的组合）与青少年足球运动员的身体成分、反向移动跳跃（CMJ）、短跑成绩和变向（COD）能力之间的关系。采用了横断面研究设计。自愿招募了来自不同年龄组（15、16、17、18和19岁）的124名青少年足球运动员。ASR是根据最大冲刺速度（MSS）与V之间的差异确定的。对运动员进行了以下测量：（i）身体成分（体重和体脂百分比）；（ii）CMJ（跳跃高度）；（iii）在5、10、15、20、25和30米处测量的短跑时间；（iv）在30米测试中最佳分段时间（5米）内测量的MSS；（v）COD能力（时间、不对称指数）；以及（vi）30-15IFT时的最终速度（V）。使用Pearson积矩相关检验来检验这些关系。身高和体重与V呈现出高度相关性（分别为r = 0.835和r = 0.699），与ASR呈现出低度相关性（分别为r = 0.
