RT Journal Article SR Electronic T1 Comparison of the basic motor abilities and school achievements in the first grade elementary school boys who attended pre-school with those who did not JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP i54 OP i54 DO 10.1136/bjsm.2010.078725.181 VO 44 IS Suppl 1 A1 Amin Mohammadi Demih A1 Ali Khajeh Landi YR 2010 UL http://bjsm.bmj.com/content/44/Suppl_1/i54.2.abstract AB The purpose of this study was to compare the basic motor abilities and school achievement of first grade elementary school boy's students who attended pre-school and those students who did not. This research is a causal-comparative study. Two-hundred students (100 with pre-school and 100 without pre-school) were chosen by stage random sampling. The instrument of this study was the basic motor ability test constructed by Arenhim and Sinkler (1974). The test of hypothesis at p<0.05 showed that: there were significant differences between the scores of the basic motor abilities and academic achievement students who attended pre-school and those who did not. Those attended pre-school showed better achievement. Therefore, it is recommended to provide situation for pre-school children to increase basic motor abilities under supervision of skill teachers.