Evaluation of the reliability and construct validity of test of gross motor development-2 (Ulrich 2) in children of Semnan province

The purpose of this study was to assess the validity and reliability of the second edition of test of gross motor development (TGMD-2; Ulrich) in 7-11 aged children of Semnan province، Iran. TGMD-2 measures 12 fundamental movement skills divided evenly into locomotor and object control subtests. 1277 children (651 girls and 626 boys) aged from seven to eleven years were participated. Cronbach''s alpha coefficients for the two subtests were ranged from 0. 60 to 0. 78، and test-retest reliability was from 0. 86 to 0. 89. Two-factor structure of TGMD-2 and proper assignment of skills to locomotor and object control factors were supported for our population. Based on our findings، we conclude that the TGMD-2 is an appropriate tool to examine the gross motor skills in this population