Abstract：
OBJECTIVE: The aim of this study was 2-fold: (1) to examine the relationships between psychophysiological responses and locomotor demands with variations in technical performance during 2v2 and 4v4 conditioned games and (2) to compare psychophysiological and locomotor responses among players exhibiting higher and lower technical performance levels during the conditioned games.
METHODS: Twenty-four male youth soccer players (16.3 ± 0.8 y old) participating at the trained/developmental level underwent monitoring for psychophysiological responses (including heart rate, rating of perceived exertion, and visual analog scale), locomotor demands (such as distance covered), and technical performance variables (including successful and unsuccessful passes and shots, as well as lost balls) across 2v2 and 4v4 formats. These formats were applied 4 times within a single session and were replicated twice over 2 weeks.
RESULTS: Large correlations between the number of lost balls per minute and mean heart rate were found in both the 2v2 and 4v4 games (r = .586 and r = .665, respectively). Successful shots were inversely and largely correlated with mean heart rate (r = -.518) in 4v4 games. The number of interceptions per minute was inversely and significantly correlated with the visual analog scale in 2v2 and 4v4 games (r = -.455 and r = -.710, respectively). The frequency of lost balls was significantly higher among players who attained a higher mean heart rate (2v2: +42.9%, P = .031, d = -0.965; 4v4: +57.1%, P < .001, d = -2.072).
CONCLUSIONS: Coaches should be aware that highly psychophysiologically demanding scenarios may significantly impair technical performance. Therefore, prioritizing technical performance by deliberately adjusting the intensity should be considered.
METHODS: Twenty-four male youth soccer players (16.3 ± 0.8 y old) participating at the trained/developmental level underwent monitoring for psychophysiological responses (including heart rate, rating of perceived exertion, and visual analog scale), locomotor demands (such as distance covered), and technical performance variables (including successful and unsuccessful passes and shots, as well as lost balls) across 2v2 and 4v4 formats. These formats were applied 4 times within a single session and were replicated twice over 2 weeks.
RESULTS: Large correlations between the number of lost balls per minute and mean heart rate were found in both the 2v2 and 4v4 games (r = .586 and r = .665, respectively). Successful shots were inversely and largely correlated with mean heart rate (r = -.518) in 4v4 games. The number of interceptions per minute was inversely and significantly correlated with the visual analog scale in 2v2 and 4v4 games (r = -.455 and r = -.710, respectively). The frequency of lost balls was significantly higher among players who attained a higher mean heart rate (2v2: +42.9%, P = .031, d = -0.965; 4v4: +57.1%, P < .001, d = -2.072).
CONCLUSIONS: Coaches should be aware that highly psychophysiologically demanding scenarios may significantly impair technical performance. Therefore, prioritizing technical performance by deliberately adjusting the intensity should be considered.
摘要：
目的：这项研究的目的是2倍：（1）在2v2和4v4条件游戏中，研究心理生理反应与运动需求之间的关系，以及（2）比较在条件游戏中表现出较高和较低技术表现水平的玩家之间的心理生理和运动反应。
方法：对参加训练/发育水平的24名男性青年足球运动员（16.3±0.8岁）进行心理生理反应监测（包括心率，感知努力的评级，和视觉模拟量表)，运动需求(如覆盖距离)，和技术性能变量(包括成功和不成功的传球和投篮，以及丢失的球）跨2v2和4v4格式。这些格式在单个会话中应用4次，并在2周内复制两次。
结果：在2v2和4v4比赛中，每分钟丢球的数量与平均心率之间存在很大的相关性（分别为r=.586和r=.665）。在4v4游戏中，成功的投篮与平均心率（r=-.518）成反比，并且在很大程度上相关。在2v2和4v4游戏中，每分钟的拦截次数与视觉模拟量成反比且显着相关（分别为r=-.455和r=-.710）。在获得较高平均心率的球员中，丢球的频率明显更高（2v2：42.9％，P=.031,d=-0.965;4v4:+57.1%,P<.001，d=-2.072)。
结论：教练应该意识到高度心理生理要求的情景可能会显著损害技术性能。因此,应考虑通过故意调整强度来优先考虑技术性能。
方法：对参加训练/发育水平的24名男性青年足球运动员（16.3±0.8岁）进行心理生理反应监测（包括心率，感知努力的评级，和视觉模拟量表)，运动需求(如覆盖距离)，和技术性能变量(包括成功和不成功的传球和投篮，以及丢失的球）跨2v2和4v4格式。这些格式在单个会话中应用4次，并在2周内复制两次。
结果：在2v2和4v4比赛中，每分钟丢球的数量与平均心率之间存在很大的相关性（分别为r=.586和r=.665）。在4v4游戏中，成功的投篮与平均心率（r=-.518）成反比，并且在很大程度上相关。在2v2和4v4游戏中，每分钟的拦截次数与视觉模拟量成反比且显着相关（分别为r=-.455和r=-.710）。在获得较高平均心率的球员中，丢球的频率明显更高（2v2：42.9％，P=.031,d=-0.965;4v4:+57.1%,P<.001，d=-2.072)。
结论：教练应该意识到高度心理生理要求的情景可能会显著损害技术性能。因此,应考虑通过故意调整强度来优先考虑技术性能。
