Beginner 1-100 Flashcards
(91 cards)
Positioned near the middle of the body
Medial (The adductors are on the medial side of thigh, since they are closest to body midline)
What is Internal Rotation
Rotation of a body/part toward the body midline
What is External Rotation
Rotation of a joint away from the body midline
What is Flexion
Bending of a joint causing the angle to the joint to decrease (Bicep Curl)
At the ankle, flexion is Dorsiflexion (Extension is Plantarflexion)
What is Extension
Straightening of a joint, causing joint angle to increase (Tricep Pushdowns, Plantarflexion)
What is Abduction
Movement of a body part away from midline of the body
similar to extension = increasing angle between two adjoining segments but in the frontal plane
What is Adduction
Movement of a body part toward the midline of the body
similar to flexion = decrease angle but in frontal plane
What is Isometric Contraction
Exert force = force placed on it, no change in muscle length and no joint movement. Dynamically stabilizes the body.
(Pushing against a wall)
What is Eccentric Contraction
Muscle Lengthening, exerting less force than being placed on.
“Negative”
Muscles decerlate/reduce force acting on the body
What is Concentric Contraction
Shortening of a muscle, exerting more force that is being placed on it.
Acceleration/produce force
Anatomical Planes (Sagittal, Front, Transverse)
Sagittal - movement in lift/right sides of body, bicep curl
Frontal - movement in anterior/posterior, lateral raises
Transverse - movement in superior/inferior, trunk rotation
What is the Transverse Plan
Top and bottom half
Motion occurs around a longitudinal or vertical axis
Movement include internal rotation, external rotation for limbs. R/L rotation for the head/trunk, pronation and supination
Trunk Rotation, Throwing, Golfing, Bat Swing
What is the Frontal Plane
Front and Back halves
Motion occurs around an anterior/posterior axis
Movements include adduction, abduction, lateral flexion in spine, inversion/eversion of foot/ankle
Side Raises, Side Lunges, Side Shuffle
What is the Sagittal Plane
Right and Left halves
Motion occurs around a coronal axis
Movements include flexion and extention
Bicep Curl, Squat, Front Lunge, Walking, Stairs
Lateral
Toward outside of body, further from midline. Opposite of Medial.
Contralateral
Positions on opposite side of body, diagonal
Right foot is contralateral to left hand
Ipsilateral
Positioned on same side of body
Right foot is ipsilateral to right hand
What is “Force”
Influence applied by one object to another resulting in acceleration or deceleration of second object
Characterized by magnitude and direction
What is Length Tension Relationship
Lengths at which a muscle can produce greatest force/power
Ability of myosin to make maximal connection to actin, resulting in maximal force production
Very important, coincides with joint allignment. If joints are misaligned, they will not generate force properly or efficiently
What is the Force Velocity Curve
Ability of muscles to produce force with increasing velocity
As velocity increases (in concentric muscle), ability to produce force decreases
What is the Force Couple Relationship
Muscle grouping together to produce movement around a joint
Each muscle has different attachment sites, pulls at different angles, creating different forces on same joint
What are some Force Common Couples
Trunk Rotation (Internal/External obliques)
Shoulder abduction (Deltoid and Rotator Cuff)
Hip/Knee Extension while walking (Gluteus Maximus, Quads, Calf)
What is Torque
“Turning Effect”
Force that produces rotation around joints - the close a weight is to a joint, the less torque it creates
What is Motor Behavior
Process of body responding to internal and external stimuli, occurs when brain sends a signal to muscles to move