43 Cards in this Set
| Front | Back |
|---|---|
|
Biomechanics
|
study of physical principles applied to biological systems
|
|
Sport Biomechanics
|
bio mechanics of athletic performance
|
|
Rehabilitation
|
biomechanics of gait, injury
|
|
Muscle & Tissue Mechanics
|
Biomechanics of physiology & mechanics
|
|
Eadward Muybridge
|
used motion picture to determine is a horse ever runs with 4 limbs on the ground
|
|
COM
|
center of mass, where body mass is in balance
|
|
Fosbury Flop
|
high jump strategy in which the COM is below the bar
|
|
Velocity=
|
Displacement/ time
|
|
Acceleration=
|
velocity/
time
|
|
Kinetics
|
forces during movement
|
|
Electroniometer
|
records joint angles
|
|
Newest motion analysis technology
|
Computerized Video Analysis
|
|
Fz
|
vertical force
|
|
Fx
|
medio-lateral force
|
|
Fy
|
Antero-posterior force
|
|
Why does a curve ball curve?
|
the Magnus effect
|
|
Muscles in parallel
|
perform similar actions in different areas
|
|
Muscles in Series
|
muscles prepare for action of other muscles
|
|
Muscle Stiffness/ compliance
|
Change in F/
Change in length
|
|
Ergonomics
|
workplace health, safety, efficiency
|
|
Ergonomic principles
|
1. limit expenditure
2. limit noise exposure
3. human- machine interface
4. rest periods
|
|
LBP
|
lower back pain
|
|
2nd leading cause of disability in US
|
LBP
|
|
% of citizens in US who experience LBP in their lifetime
|
75-80%
|
|
Absorbs shock in the spine
|
intervertebral discs
|
|
Uppermost part of spine
|
Cervical
C1- C7
|
|
Lowermost part of spine
|
Sacral
S1-S5
|
|
part of spine related to the torso
|
Thoracic
T1-T12
|
|
part of spine relating to lower back
|
lumbar
L1-L5
|
|
LBP in which pain is gone by week 6
|
Acute LBP
|
|
85-95% of LBP cases
|
Acute LBP
|
|
Modern approach to LBP
|
Light exercise regiment
|
|
Past approach to LBP
|
bed rest
|
|
moment
|
Joint torque
T = (F) (d)
|
|
Force in Joint torque is referred to as ____ and measured in ____
|
load
Newtons (N)
|
|
moment arm is measured in ___ and refers to ____
|
meters (m)
distance from force to joint
|
|
Moving the load away from the body ____ the (Nm) on the _____
|
increases
lower back
|
|
Low back loading _____ injury risk
|
increases
|
|
Q- angle
|
line segments of tibial and femoral segment
|
|
Typical Q-angle?
|
18-22 degrees
|
|
Why do women tend to have a greater Q angle than men
|
wider hips
|
|
Why is muscle force greatest at L0 ?
|
the myosin has more bridges to bind to actin
|
|
Muscle force-velocity relationship
|
highest velocity has the smallest force
|
KIN 100: EXAM 2