[Functional Knee Stability in Handball: An Indispensable Criterion For Safe Sport].

Various studies in recent years have shown that, within ball sports, handball players have a high risk of accidents and injuries. The knee joint is the most frequently injured body region, and ruptures of the anterior cruciate ligament the most common injury to the knee. To prevent consequential damage or recurrent knee injury, good functional stability of the knee is of high importance.

High incidence of hyponatremia in rowers during a four-week training camp.

Purpose: To investigate the incidence of hyponatremia and its relationship to plasma copeptin, a surrogate marker for arginine vasopressin (AVP) during 28 days of high-volume rowing training.

Methods: Thirty rowers from the German junior national team (21 male) were studied during a training camp. Serum sodium ([Na(+)]), osmolality, and copeptin were measured before the beginning of the camp (day 0), and at days 7, 13, 18, 24, and 28.