After each practice, have one player at a time start at the baseline and be timed on how many times they can run back and forth from baseline to baseline in one minute. I.e. one is from one baseline to the other and then coming back would be the second one.
Start at a baseline and runner begins when clock starts and stops when clock stops.
Length of the repetitions.
Do not ever stop and try to keep a good pace.
Endurance.
1 at a time.

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TLC: Pål Degerstrøm 2000-2008