認知統合サッカートレーニングとパフォーマンス

実験的：Cognitively Engaging Soccer Training

Participants assigned to the experimental arm will receive soccer-specific cognitive-motor training in addition to their usual soccer training. The program will last 8 weeks, with 3 sessions per week and approximately 45 minutes per session. Each session will combine soccer technical practice with game-like cognitive demands, including scanning before receiving the ball, recognizing opponent pressure, identifying target players, selecting between passing, dribbling, or shooting options, responding to transition cues, and performing under time or opponent pressure. Training tasks will progress from constrained perception-action drills to conditioned small-sided games. The intervention is designed to improve executive functions, decision-making, and soccer skill performance under representative match-like conditions.

行動：認知機能を刺激するサッカー練習

この介入は、基本的なサッカースキルの練習に認知的要素を統合します。 参加者は、運動動作に組み込まれた意思決定タスク、注意制御、作業記憶課題を含む20分間のサッカードリブルセッションに従事します。 例えば、選手はドリブル練習を行いながら、色や数字の合図に反応しなければなりません。 目的は、二重課題への従事を通じて、運動学習と認知パフォーマンスの両方を向上させることです。 認知的に魅力的なサッカー練習

アクティブコンパレータ：Conventional Soccer Training

Participants assigned to the control arm will receive active technical training in addition to their usual soccer training. The program will last 8 weeks, with 3 sessions per week and approximately 45 minutes per session. Training will include conventional soccer technical drills, such as passing patterns, dribbling circuits, receiving and turning exercises, ball-control activities, and finishing practice. The control sessions will be matched with the experimental arm for training duration, session frequency, general soccer content, and approximate physical workload. However, they will not systematically include game-like cognitive-motor constraints such as opponent-pressure recognition, target-player identification, decision-switching cues, or structured pass/dribble/shoot choice demands.

行動：従来のサッカートレーニング

この介入は、追加の認知課題を伴わない伝統的なサッカードリブルトレーニングで構成されています。 参加者は、純粋に運動能力と技術の向上に焦点を当てたサッカー技能練習（20分間）を同じ時間と頻度で行います。 外部からの認知的要求は導入されません。

Video-Based Soccer Decision Accuracy

Video-based soccer decision accuracy will be used as the primary outcome to assess soccer-specific decision-making performance. Participants will view attacking and transition scenarios from a field-player perspective. Each video will be occluded at a critical decision point, and participants will select the most appropriate action, such as pass, dribble, shoot, switch play, or retain possession. Decision accuracy will be calculated as the percentage of responses that match the expert consensus answer. Higher scores indicate better soccer-specific decision-making performance.

Dribbling performance time

Dribbling performance time will be measured as the total time (in seconds) required to complete a standardized cone-dribbling course.

Reaction time on cognitive tasks (Stroop task and 2-back task)

Reaction time (in milliseconds) will be recorded for correct responses during computerized Stroop and 2-back tasks. Mean reaction time across trials will be calculated separately for each task at each assessment time point.

Response accuracy on cognitive tasks (Stroop task and 2-back task)

Response accuracy will be calculated as the percentage of correct responses during computerized Stroop and 2-back tasks.