Which of the following factors is responsible for postactivation potentiation?

Phosphorylation of myosin regulatory light chains

Increased length of titin within the sarcomere

Decreased recruitment of higher order motor units

Which of the following can be used to achieve postactivation potentiation?

a velocity-oriented exercise followed by high-load exercise

a high-load exercise followed by a velocity-oriented exercise

a high-load exercise followed by a low-velocity exercise

Which of the following best describes the likely correlation between an individual’s strength level and the postactivation potentiation response?

Individuals with different strength levels experience the same response.

Weaker individuals experience a greater response.

Stronger individuals experience a greater response.

Which of the following are most likely to benefit from a conditioning activity to potentiate a power-based exercise?

recreational athletes

strength-trained athletes

endurance athletes

Which of the following 1RM percentages provides the greatest potentiating effect?

50%

75%

100%

Within which distance range does acceleration occur?

0-20 m

30-50 m

60-80 m

Which of the following best describes the potentiating effect of producing high ground reaction forces during conditioning activities?

Only acceleration is potentiated.

Only maximal velocity is potentiated.

Both maximal velocity and acceleration are potentiated.

Why is it suspected that bilateral strength exercises might fail to potentiate sprint performance?

They are not specific to the running motion.

Unilateral exercises can be loaded more heavily.

High-threshold motor units are not recruited.

What effect does a load of about 30% body mass have on sprinting technique?

increased flight time

increased contact time

increased step frequency

What is the recommended minimum recovery period between training sessions that involve postactivation potentiation exercise pairs?

96 hours

72 hours

48 hours