Biomechanical Principles and Stability

Flashcards focusing on key terms and concepts related to biomechanical principles and stability in human movement.

Biomechanical principles

Concepts used to analyze human movement, including levers, torque, and equilibrium.

Mechanical advantage

The ratio of the force arm to the resistance arm in a lever system; it reflects the efficiency of the lever.

Third-class lever

A lever where the force is applied between the fulcrum and the resistance, usually resulting in a mechanical advantage less than one.

Centre of gravity (COG)

The theoretical point at which the weight of an object is evenly distributed in all directions.

Line of gravity (LOG)

An imaginary vertical line extending from the centre of gravity to the ground, affecting stability.

Base of support (BOS)

The area bound by the outermost regions of contact between an object and a support surface.

Static stability

The ability to maintain a stationary position against disturbances.

Dynamic stability

The ability to maintain balance while in motion.

Factors affecting stability

Mass, size of BOS, height of COG, position of LOG, and adjustments based on external forces.

Equilibrium

The state of balance between opposing forces, crucial for maintaining stability during movement.