balance
Goals:
Biomechanical Factors:
Static vs. Dynamic Balance
· Static = stationary, need to be in static equilibrium
· Dynamic = balanced position (in equilibrium) while in potion (ex. cyclist going around a corner leans but does not fall over) – usually looks like you wouldn’t be able to hold it
- Forces (gravity and floor) cancel out so no linear acceleration, but if they don’t pass through each other there will be angular acceleration
o Want torques to cancel each other out
o Force of floor constantly shifts to counterbalance any torques
- What Effects Balance? (How to make balancing easier):
o Size of the base of support (ex. just standing the base is your foot)
-Bigger = more range to move though before you lose your balance, more likely to be able to correct yourself
o Height of center of mass
-Lower = more range to move through before you lose your balance
o Mass
-Bigger = not going to be thrown off as much to begin with when a disturbance comes along
o Stability
-Where you put your COM within the base of support
**Once COM goes outside of base of support range you can no longer ‘recover’
- Other Factors that Effect Balance
o Vision – harder with eyes closed
o Proprioception – feedback from surface
o Vestibular system - inner ear set up for sensing accelerations and lines of gravity
Critical Features: (Paddle Boarding)
· Location—wind, entry point
· Getting on—knees first
· Getting up—paddle across board, eyes toward the horizon, one leg then other, extend out of squat position, keeping your back straight—get paddle in the water right away, an active paddle help you to keep your balance
· “Trimming”—use paddle on board to move forwards or backwards to be centered on the board
see subpage for an observation and evaluation!
- maintain static and dynamic balance
Biomechanical Factors:
Static vs. Dynamic Balance
· Static = stationary, need to be in static equilibrium
· Dynamic = balanced position (in equilibrium) while in potion (ex. cyclist going around a corner leans but does not fall over) – usually looks like you wouldn’t be able to hold it
- Forces (gravity and floor) cancel out so no linear acceleration, but if they don’t pass through each other there will be angular acceleration
o Want torques to cancel each other out
o Force of floor constantly shifts to counterbalance any torques
- What Effects Balance? (How to make balancing easier):
o Size of the base of support (ex. just standing the base is your foot)
-Bigger = more range to move though before you lose your balance, more likely to be able to correct yourself
o Height of center of mass
-Lower = more range to move through before you lose your balance
o Mass
-Bigger = not going to be thrown off as much to begin with when a disturbance comes along
o Stability
-Where you put your COM within the base of support
**Once COM goes outside of base of support range you can no longer ‘recover’
- Other Factors that Effect Balance
o Vision – harder with eyes closed
o Proprioception – feedback from surface
o Vestibular system - inner ear set up for sensing accelerations and lines of gravity
Critical Features: (Paddle Boarding)
· Location—wind, entry point
· Getting on—knees first
· Getting up—paddle across board, eyes toward the horizon, one leg then other, extend out of squat position, keeping your back straight—get paddle in the water right away, an active paddle help you to keep your balance
· “Trimming”—use paddle on board to move forwards or backwards to be centered on the board
see subpage for an observation and evaluation!