title: Measuring fitness in female gymnasts: the gymnastics functional measurement tool.
abstract: OBJECTIVE
  A reliable and valid method of measuring and monitoring a gymnast's total physical fitness level is needed to assist female gymnasts in achieving healthy, injury-free participation in the sport. The Gymnastics Functional Measurement Tool (GFMT) was previously designed as a field-test to assess physical fitness in female competitive gymnasts. The purpose of this study was to further develop the GFMT by establishing a scoring system for individual test items and to initiate the process of establishing the test-retest reliability and construct validity of the GFMT.
  
  
  METHODS
  A total of 105 competitive female gymnasts ages 6-18 underwent testing using the GFMT. Fifty of these subjects underwent re-testing one week later in order to assess test-retest reliability. Construct validity was assessed using a simple regression analysis between total GFMT scores and the gymnasts' competition level to calculate the coefficient of determination (r(2)). Test-retest reliability was analyzed using Model 1 Intraclass correlation coefficients (ICC). Statistical significance was set at the p<0.05 level.
  
  
  RESULTS
  The relationship between total GFMT scores and subjects' current USAG competitive level was found to be good (r(2) = 0.60). Reliability testing of the GFMT total score showed good test-retest reliability over a one week period (ICC=0.97). Test-retest reliability of the individual component items was good (ICC = 0.80-0.92).
  
  
  CONCLUSIONS
  The results of this study provide initial support for the construct validity and test-retest reliability of the GFMT.
authors.forename: Mark D
authors.initials: MD
authors.lastname: Sleeper
authors.forename: Lisa K
authors.initials: LK
authors.lastname: Kenyon
authors.forename: Ellen
authors.initials: E
authors.lastname: Casey