[Effect of single and systematically repeated physical exercise on the threshold of anaerobic metabolism]

The anerobic threshold (AT) has been defined in 37 healthy young subjects and adults after single and repeated exercises close to the threshold one as regards the intensity. Single exercise lasted 1.5--2 h, whereas repeated ones 7 days to 5 months. The AT has been found to drop significantly at single exercises and to increase at systematic exercises lasting 30 days and more.