CSCS Speed, Agility & Plyometric Training 5 — Questions and Answers
Question 1: Which physiological adaptation primarily explains the improvement in plyometric performance after 8–12 weeks of training?
- Enhanced neural drive and improved stretch reflex sensitivity (Correct answer)
- Increased muscle fiber hypertrophy
- Greater VO2max and aerobic base
- Increased tendon length and flexibility
Correct answer: Enhanced neural drive and improved stretch reflex sensitivity
Short-term plyometric adaptations are predominantly neural — improved motor unit recruitment, rate coding, and stretch reflex potentiation.
Question 2: An athlete's deceleration ability is most closely related to:
- Eccentric strength of the quadriceps and hip extensors (Correct answer)
- Concentric strength of the plantar flexors
- Aerobic capacity and lactate threshold
- Hip flexor flexibility and stride length
Correct answer: Eccentric strength of the quadriceps and hip extensors
Deceleration requires high eccentric strength in the quadriceps and hip extensors to absorb horizontal momentum safely.
Question 3: During agility training, a 'drop step' is used to:
- Open the hips quickly to initiate movement in the direction of retreat (Correct answer)
- Shuffle laterally without crossing the feet
- Accelerate from a standing start in a forward direction
- Plant the outside foot before changing direction
Correct answer: Open the hips quickly to initiate movement in the direction of retreat
A drop step pivots the rear foot outward to open the hips, enabling rapid backward or lateral movement, often used in defensive sports positions.
Question 4: Which of the following is the MOST accurate indicator that an athlete has reached maximal sprint velocity?
- Stride length and stride frequency have reached peak values and no longer increase (Correct answer)
- Ground contact time decreases to zero
- The athlete maintains a pronounced forward lean
- Hip extension angle exceeds 180 degrees
Correct answer: Stride length and stride frequency have reached peak values and no longer increase
Maximal velocity is reached when the combination of stride length and frequency plateaus — further effort does not increase speed.
Question 5: What is the PRIMARY reason coaches prescribe long rest intervals (2–5 minutes) between plyometric sets?
- To allow full phosphocreatine resynthesis for repeated maximal power output (Correct answer)
- To prevent lactic acid accumulation in slow-twitch fibers
- To allow the stretch reflex to habituate
- To reduce heart rate to resting levels before the next set
Correct answer: To allow full phosphocreatine resynthesis for repeated maximal power output
Plyometrics are anaerobic, ATP-PCr dependent activities; full recovery (~2–5 min) allows phosphocreatine to resynthesize so each set can be performed maximally.
Question 6: Which assessment tool is BEST used to evaluate an athlete's horizontal power and speed-strength?
- Standing broad (long) jump (Correct answer)
- Vertical countermovement jump
- 40-yard dash
- T-test agility drill
Correct answer: Standing broad (long) jump
The standing broad jump measures horizontal power output and reflects speed-strength in the horizontal plane, directly relevant to acceleration.
Question 7: When designing a plyometric program for a sport requiring repeated jumping (e.g., volleyball), which principle is MOST important to periodize?
- Progressive overload through increasing intensity and volume over time, followed by planned reduction phases (Correct answer)
- Maintaining constant high volume throughout the competitive season
- Using only bilateral jumps to avoid injury risk
- Prioritizing endurance-based plyometrics over power-based drills
Correct answer: Progressive overload through increasing intensity and volume over time, followed by planned reduction phases
Periodization of plyometric load — progressively increasing volume/intensity then tapering — prevents overuse injury and optimizes peak performance timing.
CSCS Speed, Agility & Plyometric Training 5
Which physiological adaptation primarily explains the improvement in plyometric performance after 8–12 weeks of training?