title: A cross-validation study of the TGMD-2: The case of an adolescent population.
abstract: OBJECTIVE
  This study proposes an extension of a widely used test evaluating fundamental movement skills proficiency to an adolescent population, with a specific emphasis on validity and reliability for this older age group.
  
  
  METHODS
  Cross-sectional observational study.
  
  
  METHODS
  A total of 844 participants (n=456 male, 12.03±0.49) participated in this study. The 12 fundamental movement skills of the TGMD-2 were assessed. Inter-rater reliability was examined to ensure a minimum of 95% consistency between coders. Confirmatory factor analysis was undertaken with a one-factor model (all 12 skills) and two-factor model (6 locomotor skills and 6 object-control skills) as proposed by Ulrich et al. (2000). The model fit was examined using χ2, TLI, CFI and RMSEA. Test-retest reliability was carried out with a subsample of 35 participants.
  
  
  RESULTS
  The test-retest reliability reached Intraclass Correlation Coefficient of 0.78 (locomotor), 0.76 (object related) and 0.91 (gross motor skill proficiency). The confirmatory factor analysis did not display a good fit for either the one-factor or two-factor model due to a really low contribution of several skills. A reduction in the number of skills to just seven (run, gallop, hop, horizontal jump, bounce, kick and roll) revealed an overall good fit by TLI, CFI and RMSEA measures.
  
  
  CONCLUSIONS
  The proposed new model offers the possibility of longitudinal studies to track the maturation of fundamental movement skills across the child and adolescent spectrum, while also giving researchers a valid assessment to tool to evaluate adolescent fundamental movement skills proficiency level.
authors: Dublin City University, School of Health and Human Performance, Ireland. Electronic address: johann.issartel@dcu.ie.
authors: Johann
authors: J
authors: Issartel
authors: Dublin City University, School of Health and Human Performance, Ireland.
authors: Bronagh
authors: B
authors: McGrane
authors: Massey University, School of Psychology, New Zealand.
authors: Richard
authors: R
authors: Fletcher
authors: University College Cork, School of Sports Studies and Physical Education, Ireland.
authors: Wesley
authors: W
authors: O'Brien
authors: Dublin City University, School of Health and Human Performance, Ireland.
authors: Danielle
authors: D
authors: Powell
authors: Dublin City University, School of Health and Human Performance, Ireland.
authors: Sarahjane
authors: S
authors: Belton
mesh_terms: D000293:Adolescent; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D009048:Motor Skills / Q000502:physiology*; D015203:Reproducibility of Results
keywords: Assessment; Fundamental movement skills; Motor skills proficiency; Validity