Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan.
Nakatani Orthopaedic Surgery Hospital, Kakogawa, Japan.
Kobe J Med Sci. 2021 Nov 2;67(3):E79-E83.
Dehydration reduces exercise performance and causes heat-related illness. However, the fact that dehydration is a serious sports injury is often forgotten, especially among junior tennis players, who engage in tennis matches alone without receiving advice from others. Our objective was to investigate the hydration status of junior tennis players and the difference after attending a lecture on the importance of hydration. In total, 157 junior tennis players attending a training camp participated in this study. The duration of the camp was two days, and a lecture was organized on the first night to educate the players about hydration using a body mass scale. Body mass (BM) was measured immediately before and after practice on the first and second day. The water loss rate (WLR) was calculated by dividing the loss in BM during practice by the BM before practice. In total, 34.4% of players had attended a lecture on hydration in the past. These players had a lower WLR than those who had not, but the difference was not significant. The WLR was significantly lower after attending our lecture than that before. This study suggests that a lecture on hydration could immediately improve the hydration status of the junior tennis players; however, this effect may not be lasting. They may need help from their coaches and parents to implement what they have learned in lecture.
脱水会降低运动表现并导致与热有关的疾病。然而，脱水是一种严重的运动损伤，这一事实经常被遗忘，尤其是在青少年网球运动员中，他们独自参加网球比赛，而没有从他人那里获得建议。我们的目的是调查青少年网球运动员的脱水状况，并在参加关于补水重要性的讲座后观察其差异。共有 157 名参加训练营的青少年网球运动员参与了这项研究。训练营持续两天，并在第一天晚上组织了一场讲座，使用体脂秤向运动员传授补水知识。在第一天和第二天的训练前后立即测量体质量（BM）。通过将训练期间的 BM 损失除以训练前的 BM 来计算水损失率（WLR）。共有 34.4%的运动员参加过补水讲座。这些球员的 WLR 低于未参加过的球员，但差异不显著。参加我们的讲座后，WLR 明显低于之前。这项研究表明，关于补水的讲座可以立即改善青少年网球运动员的补水状况；然而，这种效果可能不会持久。他们可能需要教练和家长的帮助来实施他们在讲座中学到的知识。
