ESS 302 lecture 1.5/2.0 neuromuscular

If velocity of movement is above 400 degrees/second what will happen to force regardless of fiber type?

• Force will remain the same.
• Force will decrease.
• Force will fluctuate unpredictably.
• Force will increase.

Why will force drop if performed above 400 degrees/second?

• Force increases due to enhanced muscle efficiency.
• Force remains constant regardless of speed.
• Force drops only when exceeding 600 degrees/second.
• Force will drop due to decreased actin and myosin binding.

This fiber type has lower maximal velocity of shortening

• Type IIA fibers (intermediate muscle fibers)
• Type IIX fibers (fast-twitch glycolytic fibers)
• Type I fibers (slow-twitch muscle fibers)
• Type IIb fibers (fast-twitch muscle fibers)

Acute neural adaptations for training include which of the following?

• Decreased muscle flexibility and endurance.
• Increased motor unit recruitment and firing rate.
• Reduced oxygen consumption during exercise.
• Lower neural drive and motor unit recruitment

Hypertrophy can only take place when performing less than 10 HEAVY repetitions

• True

• False

Questions for today?