Flashcards: Fundamentals of Body Balance and Movement — 16 cards

Segmental centers of mass — definition?

Points where each body segment's mass is concentrated.

Shifting of segmental centers — effect?

Alters overall body center of mass and balance.

Effect of limb movement — on COM?

Changes the position of the overall center of mass.

Combined center of mass — calculation?

Sum of segmental centers weighted by mass.

COM in static posture — position?

Over support surface for balance.

Static equilibrium — condition?

COM over support base, no movement.

Support base — role?

Provides contact area for stability.

Dynamic balance — key feature?

Maintains stability with COM outside support base.

Balance in activity — how?

Through controlled movement and acceleration.

COM in motion — during activity?

Can be outside support base, stabilized by movement.

Acceleration effects — on balance?

Shifts COM and helps maintain stability.

Force impulse — effect?

Changes body's momentum over time.

Force line of action — significance?

Determines translation or rotation effects.

Force, momentum — relationship?

Force impulse alters momentum and movement.

Ontogeny — development?

Individual growth from fertilization to maturity.

Endogenous factors — influence?

Internal, genetic, biological influences.