Week 12 - Load-velocity and Hypertrophy Flashcards
What is the force-velocity relationship?
Is a hyperbolic relationship between the force that an individual sarcomere can produce with respect to its velocity of shortening
The lower the speed –> the higher the force production
What is mean concentric velocity?
The average velocity from the start of the concentric phase until the bar reaches maximum height
What is the mean propulsive velocity?
The average velocity from the start of concentric phase until the acceleration is lower than gravity –> usually occurs in the first half of the movement
What is peak velocity?
Maximum instantaneous velocity reached duing concentric phase
What is the load-velocity relationship?
DONT GET CONFUSED FOR FORCE VELOCITY!!
- Is a LINEAR relationship
- Describes the relationship between the load (% 1RM) is being lifted and the speeds at which that load can be moved within concentric phase
- Has a strong linear correlation –> high confidence when we measure load the velocity can be determined with high certainty
What is minimum velocity threshold?
Is the fastest velocity that will occur at a maximal exertion
Can also be the last successful rep in a maximal effort set
The MVT helps to determine the point where an athlete’s performance starts to drop significantly in terms of speed. This threshold serves as an indicator for when the load becomes too heavy to maintain an optimal velocity, signaling that the athlete is shifting from training for power or speed to focusing more on strength
What is Load Zero?
The theoretical load at zero velocity
Is the point at which the load crosses the x-axis
What is velocity zero?
The theoretical velocity at zero load
The point at which teh velocity crosses the y-axis
Parallel Vs Serial Hypertrophy
Parallel
More sarcomeres in parallel
Generating force in the same direction
Serial
Formed in sequence of each other
Increases strength across the sarcomere
What external factors stimulate hypertrophy at a structural level?
- Resistance Training
- Diet
- Sleep
- Supplements
What stimulates hypertrophy from a structural level
Start with mechical stress
Mechanical Stress –> mechanical tension –> mTORC1 activated
–> causing protein synthesis to occur –> muscule hypertrophy
What is mechanical tension?
The force that is being exerted over an area in which it acts
e.g. muscles pull on bones with the surface area where the tendon attaches
What is the term for detection in force detection to changes in muscle structure?
Mechanotransduction
What is the most important factor for RT induced hypertrophy?
MECHANICAL TENSION
What determines mechanical tension during RT?
HENNEMENS PRINCIPLE
Activation of more MU contributes to force production and increases the amount of mechanical tension experienced
