$12$ elementary school students were taught a technique for lifting an empty crate from the floor. The lifting performance of each student was rated on an $5-$point scale on three occasions: before instruction on lifting $($Pretest$)$; two days after instruction $($Post $1)$; and $67$ weeks after instruction $($Post $2).$ Students were expected to lift the crate keeping a straight back, flexing at the hips and knees, keeping the crate within $15$ cm of the body and within the base of support, and without twisting. A student$$s score was determined by the number of components observed during the lift. Therefore, scores ranged from $0$ to $5.$ Is lifting skill affected by training and is this skill maintained with time after training?