Training and instructing support device

摘要: A personal device is provided for measuring a training activity of trainee having body part which moves during this activity, movement at least partially defining said activity. The comprises sensing unit adapted to repeatedly measure, the parameters associated with part, and wherein comprising accelerometer means, compass and, optimally, gyroscope means. further means attaching processor receive from calculate based thereon, data indicative In addition, there are system use by an instructor in instructing plurality participants engaged communication communicating one or more swimmers, transmitting module communicate accordance wireless protocol receiving swimmer, method automated swimmers accordingly.