Small group play was organised as five a side, including goalkeepers as shown in fig 2. Pilot studies indicated that it would be necessary to use four minute periods of play to reach at least three minutes in the high intensity zone. Intensity was sought to be as high as possible through the four minute playing periods. Two four minute playing periods were carried out, separated by three minutes of active rest. Pilot studies showed that active coaching by encouragement and constructive messages was necessary to achieve a high enough intensity for some of the players. The measuring equipment was similar to that used for the dribbling track.