Resumen de The Effects of a Commercially Available Warm-up Program on Landing Mechanics in Female Youth Soccer Players

Sara L. Grandstrand, Ronald Pfeiffer, Michelle B. Sabick, Mark DeBeliso, Kevin G. Shea

• Grandstrand, S.L., R.P. Pfeiffer, M.B. Sabick, M. DeBeliso, and K.G. Shea. The effects of a commercially available warm-up program on landing mechanics in female youth soccer players. J. Strength Cond. Res. 20(2):331-335. 2006.-The purpose of this study was to examine lower extremity kinematics following implementation of the Sportsmetrics Warm-Up for Injury Prevention and Performance (WIPP) training program. The hypothesis was that there would be no difference in landing mechanics between 2 groups of female youth soccer players (9-11 years of age), with 1 group (Treatment) completing the 8-week- duration (2 days per week) WIPP program and the other serving as a Control group. We recruited 21 female youth soccer players. Treatment (n = 12) and Control (n = 9) groups were established. Using the Sportsmetrics Software for Analysis of Jumping Mechanics, we analyzed lower extremity movement during landing after subjects jumped off a 30.5-cm box and immediately went into a vertical jump. No significant changes in knee separation values were observed in the Treatment group after 8 weeks of WIPP training. The results indicate that 8 weeks of WIPP training did not significantly alter landing strategies