Strength, flexibility, functional movement and injury in collegiate men football players
Bradberry, Dennis Rex
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The research for this dissertation investigated the relationship between functional movement screen scores, musculoskeletal injury, and strength/power in collegiate football athletes across the competitive season. Two studies were completed. In each study, participant’s functional movement was assessed. In study 1, FMS scores and significant injury (defined as 10 or more days out) data were collected for the 2009 competitive season for one collegiate football team (n=67). A score of 11 on the FMS was found to yield acceptable specificity of 0.80 and sensitivity of 0.290. The odds ratio was found to be 9.778. The odds ratio can be interpreted as a player having a nine-fold increases chance of a significant injury when their FMS score is 11 or less when compared to a player whose score was greater than 11 at the start of the season. Study 2 investigated the relationship between the functional movement screen scores and strength/power in college football players. It was intended to study the relationship between functional movement and strength/power in collegiate football players in order to determine the correlation between these modifiable risk factors. The relationship between the FMS scores and strength/power was examined with all 97 players that participated during 2009-2010. The relationship between FMS and strength/power was investigated as two continuous variables. SPSS 17.0 was used to run a significant test for the correlations. At the .01 level, there was a significant negative correlation between FMS composite score and bench press (r = -0.299) p=.003. At the .01 level, there was a significant negative correlation between FMS composite score and back squat (r = -0.261) p=.010. At the 0.01 level, there was not a significant correlation between FMS composite score and power clean (r = -0.156) p=.124. The functional movement screen was found to show some potential as an identifier in predicting significant injuries (as defined in this investigation) of 10 or more days out. Athletes with a lower FMS score were found to be more likely to sustain a significant injury if they scored 11 or less. The FMS was designed as a screening test to determine deficiencies and imbalances in movements not strength or power output. In spite of imbalances, the athlete can still genreate an adequate amount of strength/power to perform the standard football lifts. The results of this investigation lead us to believe that the muscle function can be strengthened to produce force even though functional flexibility may be compromised by asymmetries and imbalances.