Term
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Definition
| How quickly a position changes. |
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| The rate, or a measure of the rate, of motion. |
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Definition
| A change in the velocity of an object. |
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Definition
| Transfer of energy by a force acting to displace a body. |
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Definition
| Time rate of doing work or (Force x Distance) / Time. |
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Definition
| A unit of power in the International System of Units equal to one joule per second. |
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Definition
| The truning effect created by a force about an axis. |
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Definition
| Change in position that occurs when all points on an object move the same distance, in the same direction, and at the same time. |
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Term
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Definition
| Mass of an object times the linear velocity of the object. |
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Definition
| The energy possessed by a body because of its motion. |
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Definition
| Energy stored by an object by virtue of its postion. |
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Term
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Definition
| load is a single sided or unbalanced load. |
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Term
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Definition
| is a stable state characterized by the concellation of all forces by equal, opposing forces. |
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Term
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Definition
The distance between the fulcrum and the point of resistance is known as the |
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Term
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Definition
| Torque created about an axis by a pair of oppositely directed forces is referred to as: |
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Term
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Definition
| The point where the mass of the object is equally balanced is known as the: |
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Term
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Definition
| A group of body segments, known as a ______, are connected by joints so that the segments operate together to provide a wide range of motion for the limb. |
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Term
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Definition
| As a rotating body spins about an external or internal axis, ________opposes any change in the body's speed of rotation that may be caused by a torque. |
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Term
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Definition
| Also thought of as "amount of rotation" of the body, _______ is the product of the momentum of a rotating body and its distance from the axis of rotation. |
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Term
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Definition
| refers to the role of a muscle whose torque opposes the action. |
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Term
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Definition
| refers to the role of a muscle whose torque aids the action, often referred to as the prime mover. |
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Term
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Definition
| The force production relationship between opposing muscles or muscle groups is known as: |
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Term
| Newton's first law of motion |
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Definition
| Law of Inertia: An object at rest tends to stay at rest and an object in motion tends to stay in motion unless acted upon by an unbalanced force. |
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Term
| Newton's second Law of motion |
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Definition
| The force exerted on a body equals the resulting change in the body's momentum divided by the time elapsed in the process. |
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Term
| Newton's Third Law of Motion |
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Definition
| To every action there is always an equal and opposite reaction. |
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Term
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Definition
| those in which tension results in a pulling force. |
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Term
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Definition
| those that exert a pushing force. |
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Term
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Definition
| occur when two objects contact one another. |
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Definition
| the force acting on the body when the body is not in motion, but when a force is acting on it. |
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Definition
| move same distance, in the same direction, at the same time. |
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Term
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Definition
| all points on a body move in circles around a fixed axis. |
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Term
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Definition
| If the starting position is known, a particular motion can be quantified by: |
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Term
| Work (w)/ time taken to do the work (T) |
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Definition
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Term
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Definition
| T/F? As a muscle's contraction velocity increases, its maximal force output decreases. |
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Term
quanity of power
the time it is sustained |
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Definition
| Power out put is dependent upon which two factors? |
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Term
force
attachment location |
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Definition
| The torques created by the muscles of the body are dependent upon which two components? |
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Term
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Definition
| Gravity pulls on the center of mass of an object at the rate of: |
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Term
| transverse abdominis and multifidus muscles |
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Definition
| What two muscles represents the primary stabilizer for the lumbopelvic region? |
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Term
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Definition
When swimming, water is an example of what type of resistive force?
A. Tensile force
B. Compressive force
C. Non-Contact force
D. Contact force
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Term
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Definition
The concentric phase of a military press is an example of which of the following?
A. negative work
B. Positive work
C. potential energy
D. frictional force |
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Term
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Definition
Which of the following has the greatest effect on a measured power output?
A. muscle initial length
B. Neutralizing properties
C. contractile velocity
D. location of the center of gravity
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Term
| C. the hip flexors cause anterior pull on the spine leading to disc comression |
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Definition
Leg lifts are contraindicated due to :
A. The resistive torques place excessive stress on the rectus abdominis
B. The cervical spine may vecome stained
C. the hip flexors cause anterior pull on the spine leading to disc compression
D. The pelvis is pulled into a posterior tilt
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Term
A. pelvis migrates into a posterior pelvic tilt
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Definition
What is a common biomechanical problem caused by performing the leg press exercise with tight hip extensors?
A. pelvis migrates into a posterior pelvic tilt
B. The knees are forced past the toes
C. Cervical spine stress occurs due to neck flexion
D. All of the above |
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