Biomechanical Principles

Match the term with the most accurate definition Lever Rigid or semi-rigid object, that when subject to a force whose line of action does not pass through its pivot point, exerts force on any object impeding it’s tendency to rotate Fulcrum Pivot point of a lever Moment Arm The perpendicular distance from the line of action of the force, to the fulcrum Muscle Force Force generated by stretching of noncontractile tissue, that draws opposite ends of a muscle toward each other Resistive Force Force generated by external source of the body (i.e. gravity, inertia, friction), that acts against muscle force Torque The degree to which a force tends to rotate an object about a specified fulcrum Mechanical Advantage Ratio of the moment arm through which an applied force acts to that through a resistive force acts Acceleration Change in velocity per unit of time Work The product of the force exerted on an object and the distance the object moves in the direction in which the force is exerted Power Time rate of doing work Describe positive work power versus negative work power List and describe the possible sources of resistance to muscle contraction Determine the correct description for first, second, and third class levers. Muscle Force Resistive Force act on the same side of the fulcrum but has a lower mechanical advantage is a Third-Class lever. Muscle force Resistive force act on opposite sides of the fulcrum is a First-Class lever. Muscle force Resistive Force act on the same side of the fulcrum but has a higher mechanical advantage is a Second-Class lever Provide an example of a first-class, second-class, and third-class level is in the human body. Describe what anatomical neutral looks like. List the planes of movement their associated axis. Determine which movements occur on which planes axis. Flexion extension occur within a sagittal plane a frontal axis. Abduction adduction occur within a frontal plane a sagittal axis. Rotational movements occur within a transverse plane a longitudinal axis. What is periodization what is the difference between a macrocyle a microcycle. List describe the various periods of periodization.