Research Group for Development of Football and Futsal, Sports Center, Federal University of Santa Catarina, Florianópolis, Brazil.
Football Training and Biomechanics Laboratory, Technical Department, Italian Football Federation (FIGC), Coverciano, Florence, Italy.
J Strength Cond Res. 2021 Jul 1;35(7):2000-2009. doi: 10.1519/JSC.0000000000003047.
Fernandes-Da-Silva, J, Castagna, C, Teixeira, AS, Carminatti, LJ, Francini, L, Póvoas, SCA, and Antonacci Guglielmo, LG. Ecological and construct validity of a repeated sprint test in male youth soccer players. J Strength Cond Res 35(7): 2000-2009, 2021-This study aimed to examine the relationship between a repeated sprint ability (RSA) test (5 bouts of 30-m sprints interspersed by 30 seconds of recovery) and match-related physical performance in male youth soccer players. Although 60 outfield players were evaluated, only data from players who participated in the full matches (n = 39) were retained (8 central defenders, 7 external defenders, 8 central midfielders, 8 external midfielders, and 8 forwards). To verify the ecological validity of this RSA protocol, the association between the best (RSAbest) and mean (RSAmean) sprint time in the 5 × 30-m and physical match performance during friendly youth soccer games was examined. Physical match demands were assessed using global positioning system technology (10 Hz) considering distance covered in selected arbitrary speed categories. The absolute speed thresholds were the same for all the players. Players were categorized into 2 groups based on the 5 × 30-m performance: RSAmean times below (i.e., faster) and above (i.e., slower) the median value. Players with faster RSAmean times covered significantly more distance sprinting during friendly matches (606 ± 204 m, +47.0%; t = 4.953; effect size = 1.88, 1.24; 2.52, p ≤ 0.001) compared to their slower counterparts (322 ± 145 m). A large negative correlation (r = -0.63, -0.77; -0.44, p ≤ 0.001) was found between RSAbest time (4.59 ± 0.27 seconds) and match sprint distance (457 ± 229 m). Likewise, RSAmean time (4.76 ± 0.25 seconds) was also largely associated (r = -0.60, -0.75; -0.39; p ≤ 0.001) with in-game sprinting performance. The results of this study provided evidence to support the construct and ecological validity of the 5 × 30-m protocol in male youth soccer players. Furthermore, differences in 5 × 30-m performance explained the amount of sprinting activity performed during the match.
费尔南德斯-达席尔瓦、J、卡斯塔尼亚、C、特谢拉、AS、卡米纳蒂、LJ、弗朗西尼、L、波瓦兹、SCA 和安东纳奇·古列尔莫、LG。男性青年足球运动员重复冲刺能力测试的生态和结构有效性。J 力量与条件研究 35(7)：2000-2009，2021-本研究旨在探讨重复冲刺能力（RSA）测试（5 次 30 米冲刺，每次冲刺之间穿插 30 秒恢复）与男性青年足球运动员比赛相关体能表现之间的关系。尽管对 60 名外场球员进行了评估，但仅保留了参加完整比赛的球员的数据（n=39）（8 名中后卫、7 名外后卫、8 名中前卫、8 名外前卫和 8 名前锋）。为了验证该 RSA 方案的生态有效性，检验了 5×30 米的最佳（RSAbest）和平均（RSAmean）冲刺时间与友好青年足球比赛中身体比赛表现之间的相关性。使用全球定位系统技术（10 Hz）评估身体比赛需求，考虑到在选定任意速度类别中覆盖的距离。所有球员的绝对速度阈值都相同。根据 5×30 米的表现，球员分为 2 组：RSAmean 时间低于（即更快）和高于（即更慢）中位数。RSAmean 时间较快的球员在友好比赛中覆盖的冲刺距离明显更远（606±204m，+47.0%；t=4.953；效应量=1.88，1.24；2.52，p≤0.001）与较慢的球员相比（322±145m）。发现 RSAbest 时间（4.59±0.27 秒）和比赛冲刺距离（457±229m）之间存在很大的负相关（r=-0.63，-0.77；-0.44，p≤0.001）。同样，RSAmean 时间（4.76±0.25 秒）也与比赛中的冲刺表现有很大的相关性（r=-0.60，-0.75；-0.39；p≤0.001）。本研究的结果为男性青年足球运动员 5×30 米方案的结构和生态有效性提供了证据。此外，5×30 米表现的差异解释了比赛中进行的冲刺活动量。
