NASM Terms To Study Flashcards
Reciprocal inhibition
When an agonist receives a signal to contract, its functional antagonist also receives an inhibitory signal allowing it to lengthen pg. 895.
Autogenic inhibition
Prolonged Golgi tendon organ stimulation that provides an inhibitory action to muscle spindles located within the same muscle pg. 892.
Relative flexibility
The process in which the body seeks the path of least resistance during functional movements pg. 895.
Synergistic dominance
The neuromuscular phenomenon that occurs when synergists take over function for a weak or inhibited prime mover (agonist) pg. 898. Example: Sitting all day increases neural drive to the hip flexors, decreases neural drive to the glutes therefore the hamstrings have to pick up the slack for the inhibited glute muscles.
All-or-nothing principle
Motor units cannot cary the amount of force they generate; they either contract maximally or not at all.
Davis law
States that soft tissue models along the lines of stress.
1st law of thermodynamics
Energy can not be either created nor destroyed. Energy = calories. Calorie is a unit of measurement defined by the energy needed to raise the temperature of 1 gram of water through 1 °C (now usually defined as 4.1868 joules.)
Hypertension
Elevated blood pressure 140/90
Sliding filament theory
The series of steps in muscle contraction involving how myosin (thick filament) and actin (thin filament) slide past one another to produce a muscle contraction shortening the entire length of the sarcomere (smallest unit of a muscle fiber.)
Stroke volume
The amount of blood pumped out of the heart with each contraction.
Neuromuscular efficiency
The ability of the nervous system to recruit the correct muscles to produce force, reduce force, and dynamically stabilize the body’s structure in all three planes of motion.
Amortization
The transition from eccentric loading to concentric unloading during the stretch-shortening cycle
Length-tension relationship
Resting length of a muscle and the tension the muscle can produce at this resting length.
SAGITTAL
(dissection the body into right & left halves allowing for flexion / extension) I.e. squats, lunges, biceps curls, running.
FRONTAL
(dissecting the body into anterior & posterior halves allowing for abduction / adduction I.e. pull-ups, side band walks, jumping jacks.