NASM Terms To Study Flashcards
(30 cards)
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.
TRANSVERSE
(dissecting the body into superior & inferior halves allowing for rotation I.e. chest / reverse flies, rotating med ball slams.
Golgi tendon
Specialized sensor receptor located at the point where skeletal fibers insert into the tendons of the muscle; sensitive to changes in muscular tension and rate of tension change (think TENSION / PRESSURE / FOAM ROLLING)
Muscle spindles
Sensory receptors sensitive to change in length of the muscle and the rate of that change (think STRETCHING)
SAQ: SPEED
Ability to move the body in one intended direction as fast as possible.
SAQ: AGILITY
The ability to start / stop (accelerate / decelerate & stabilize) in response to a stimulus quickly while maintaining postural control.
SAQ: QUICKNESS
The ability to react and change body position with maximal force in all planes of motion.
BMI & ranges
The measurement of a person’s weight relative to their height, which is used to estimate the risks of obesity. 18.5-24.9 - normal. 25-29.9 - overweight. 30+ obese.
Macro’s AMDR %
Carbs 45-65%
Protein 10-35%
Fat 20-35% (no more than 10% being saturated.)
Durnin womersely testing sites
Biceps & triceps (vertical readings) & subscapularis & suprailiac (diagonal readings)