I posted two valuable training resources in this thread in 2008:
I received this data three years ago from an associate who retrieved it from Milan Lab:
-The longest sprint football players run in a game is 20-30m (22- 33yd) and the total volume per match is about 160m (175yd) at speeds of >25.3Km/h, (15.7mph)
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high speed runs the total is 680m (744yd) 19.9-25.2km/h, (12.4-15.7mph)
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jogging is 4.97km (3.1 miles) speed=7.3-14.4km/h (4.5-8.9 mph)
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walking of 3.67km (2.3 miles) speed=.02-7.2km/h. (very slow- 4.4mph)
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The total time of each match is 90 minutes actual playing time is 54-65 minutes
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heart rates are between 160-175 on avg. over the course of this time
As a physical preparation coach, rest assured that this type of material, in addition to biodynamic considerations of the game by position and the tactical and philosophical specifics of the team, are my starting points for constructing the physical preparation program.
Whether or not this is actually the approach taken by the various teams I do not know.