Table 3.

Overview of the instructions given to the different groups.

	General instruction	Pretest	Instructions	TR1 & TR2	Posttest	Retention test
EF	Jump as high as possible after you have landed off the box	5 DVJ's	Push yourself as hard as possible off the ground after landing on the force plate	2 × 10 DVJ's with self-controlled feedback (LESS score) & group specific instruction after every 5 trials	5 DVJ's	5 DVJ's
IF	Jump as high as possible after you have landed off the box	5 DVJ's	Extend your knees as rapidly as possible after the landing on the force plate	2 × 10 DVJ's with self-controlled feedback (LESS score) & group specific instruction after every 5 trials	5 DVJ's	5 DVJ's
VI	Jump as high as possible after you have landed off the box	5 DVJ's	You will see a video of an expert jump. Try to imitate the jump as best you can	2 × 10 DVJ's with self-controlled feedback (LESS score) & group specific instruction after every 5 trials	5 DVJ's	5 DVJ's
CTRL	Jump as high as possible after you have landed off the box	5 DVJ's	N.A.	2 × 10 DVJ's	5 DVJ's	5 DVJ's

EF = external focus; IF = internal focus; VI = video instruction; CTRL = control group; DVJ = drop vertical jump; TR1 = training block 1; TR2 = training block 2.