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Quickness and Plyometrics. Chapter 19. Objectives. Explain the physiology behind plyometrics Identify the SSC Design an effective program Teach proper execution of exercises Understand locomotion Define SAQ drills Design a proper SAQ program. Anatomical.
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Quickness and Plyometrics Chapter 19
Objectives • Explain the physiology behind plyometrics • Identify the SSC • Design an effective program • Teach proper execution of exercises • Understand locomotion • Define SAQ drills • Design a proper SAQ program
Anatomical • Stretch shortening cycle (SSC) is used for starting and stopping • Stopping loads the muscle eccentrically and pre-stretches • Potential energy is thus stored • Keys are rate of stretch and amortization time (countermovement) • Too long and stretch is lost
Training Programs • Add plyometrics near end of program • Quality over quantity • Speed training of 500 yards total • Complex training cycle for 4-6 weeks
FIVR • Frequency-1-2 times per week • Intensity-90-100% max • Volume-2 sets x 2-10 reps • Rest-long (1:5)
Plyometric Exercise Rx • Intensity • Height of the jump or drop • Weight of medicine ball • Participants body weight • Single leg vs. double leg • Speed of movement
Speed and Agility Chapter 20
Agility • Change direction quickly • React to a stimulus • Start quickly • Stop quickly • Agility enhances competitiveness • Coordination and skill are components of agility
Designing a Program • A drill addresses a specific part of a larger skill • Drills are classified as general or sport specific • Strive for perfect technical execution • Simple before complex
Acceleration • Accelerate-get to top speed as fast as possible • 1st gear of speed • Speed-reach maximum velocity and maintain it • Top speed in 100 meter sprints is ~28 MPH • Sports involve mostly acceleration not speed
Speed cont… • Gender • Males are .75 s faster at 100 meters • Males have faster stride rate (5 vs. 4.5 steps per s) • Males have longer stride length • Females are improving faster than males
Next Class • Outside for SAQ and plyomertics