Based on the original conceptual model of sport commitment by Carpenter and Coleman(1998) and the mediational model by Weiss, Kimmel, and Smith, (2001), a few researches hasve beenconducted to test its relationships among the Thai populations’ athletesic population. (Choosakul, 2003;Choosakul, Vongjaturapat, Tayruekum, 2004; Vongjaturapat, Choosakul, & Tairuekum, 2004;Choosakul, 2004). Such evidence however is of limited value in specifically explaining Thai athlete’sinvolvement in tennis. Therefore, the objectives of this study were (a) to test and validate aninstrument of SCM in a young Thai tennis players; and (b) to examine the structural relationshipsamong the component of SCM in alignment with two conceptual models. A Thai version of the TennisAthlete Opinion Survey (TTAOS) was completed by a employed to a total of 598 (males = 427,females = 171) young tennis players. A confirmatory factor analysis revealed that the model fit theempirical data well. All sub-scales were found to have adequate reliability, as indicated by the alphareliability coefficients (r = .72 - .89) and composite reliability. These findings also provided empiricalsupport for the construct validity of the SCM’ instrument for young Thai youth tennis players. Moreover,hypothesized relationships among variables were tested using structural equation modelingmodeling.The results provided a support for the original and mediational models. These results are a usefulimplication forto tennis training that can be structured to maximize the commitment and motivation foryoung Thai youth tennis players.
