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Effect of Depth Jumps on Agility in Female Varsity Hockey Players

Effect of Depth Jumps on Agility in Female Varsity Hockey Players. By: Sadie Whaley Advisor: Jeff Vossen Co-Advisor: Angie Kolen October 30 th , 2013. Agenda. Introduction Literature Review Purpose Methods Procedure Tests. Introduction.

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Effect of Depth Jumps on Agility in Female Varsity Hockey Players

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  1. Effect of Depth Jumps on Agilityin Female Varsity Hockey Players By: Sadie Whaley Advisor: Jeff Vossen Co-Advisor: Angie Kolen October 30th , 2013

  2. Agenda • Introduction • Literature Review • Purpose • Methods • Procedure • Tests

  3. Introduction • Plyometrics are exercises used to increase power in athletes (Fatourors, 2000) • Power – amount of work a muscle can produce per unit of time (Adams, O’Shea, O’Shea & Climstein, 1992) • Plyometric exercises are characterized by a rapid lengthening of the muscle followed immediately by a shortening muscle action (Miller, Herniman, Ricard, Cheatham & Michael, 2006) • Depth Jumps are continually used in plyometric studies (Flanagan, Ebben& Jensen, 2008) • Elite hockey training often uses plyometrics for strength and increasing speed (Ebben, Carroll & Simenz, 2004)

  4. Agility and Hockey • During hockey games, players are continually stopping, starting and changing direction • Agility – ability to maintain and control correct body position while quickly changing direction through a series of movements (Yap & Brown, 2000) • Important skill in hockey – NHL Strength & Conditioning Coaches use this in training and testing (Ebben, Carroll & Simenz, 2004) • Power gained through plyometrics could improve agility as changing direction in an explosive manner requires a high force output (Asadi, 2012) • If plyometrics are already used to train to increase power, do they have an affect on any other skills?

  5. Literature Review

  6. Purpose • The main objective of this study is to determine if a depth jump training program increase’s individuals agility and vertical jump

  7. Hypothesis I hypothesize that a depth jump training program will increase the subjects agility and vertical jump height.

  8. Subjects • 10 – 15 Female St. FX Varsity Hockey athletes • No prior plyometric training required • No initiation of new lower body training regimen • Participation is voluntary and based on recruitment through Head Coach, David Synishin

  9. Methodology • Pre-tests will be performed following Research Ethics Board approval and completion of Consent forms by participants • Training program will be initiated in second semester • Post-tests will be performed within a week of completion of the training program to ensure benefits are still present

  10. Training Session Protocol • 6 weeks of training with 2 sessions per week • Warm up: 5 minutes on stationary bike Dynamic stretches • Training: Depth Jump Intensity based on week protocol (See next slide) • Cool Down: 2 minutes on stationary bike followed by static stretches

  11. Training Portion • Entire training portion consists of depth jump • 15 second rest between repetitions • 3 minute rest between sets • (Read & Cisar, 2001) Week 1: Focus is familiarization (Gehri et al, 1998) Week 2-6: Focus on proper technique and power production

  12. Depth Jump Subjects will be instructed to step off a 40 cm box, land and perform a maximal vertical jump while minimizing contact time. (Thomas, French & Hayes, 2009)

  13. Testing Warm-up prior to testing 5 minute stationary cycling Dynamic Stretches 2 Practice trials for each test then record Illinois Agility Test T-Test Jump Height Test Cool-down post testing Stationary Bike Static stetching

  14. Illinois Agility Test Dimensions will be measured using open reel long dimension tape measure Light sensor stop-watches at start and finish gate to ensure accuracy Observer at far line to ensure subjects reach the end Considered standard test in agility (Sheppard & Young, 2006)

  15. T-Test Dimensions measured using open reel tape measure Laser stop watch at start and finish to ensure accuracy (Miller, Herniam, Ricard, Cheatham & Michael, 2006)

  16. Vertical Jump • Complete vertical jump on force plate • Force plate measures impulse which can be used to calculate vertical jump height • Force plate – PasPort 2-Axis Force Platform Model No, PS-2142 • Data imported to Microsoft excel

  17. Statistical Analysis • 2 X 3 Analysis of Variance (ANOVA) with Repeated Measures using SPSS Version 15.0.1 • Dependent Variables: -Pre-test - Post-test • Independent Variables: - Illinois Agility Test - T-Test - Vertical Max

  18. Acknowledgements • Jeff Vossen • Angie Kolen • Graham Kennedy • St FX Human Kinetics Department

  19. Questions

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