nasa study guide Flashcards
agonist:
gluteus maximus is the agonist for
hip extension (ie squats)
anterior. deltoid. is the agonist for
shoulder. flexion (ie shoulder press)
agonist: biceps brachii is agonist for
elbow flexion (id biceps curl)
agonist: triceps brachii is agonist for
elbow extension (ie triceps pushdowns)
synergist: hamstring complex and the erector spine are synergist
with the glues maximum during hip extension
synergist: branchioradialis and brachial (forearm muscles) assist
the biceps brachii during a biceps curl
synergist: triceps brachii assist the
pectoral muscles during a chest press
synergist: biceps brachii assist the
latissimus doors during a pull-up
stabilizers: transverses abdominis (deep abdominal muscle), internal obliques, and multifundus (deep muscles of spine) stabilize…
the LPHC during hip extension (ie squats)
stabilizers: the rotator cuff muscles (supraspinatus, infraspinatus, trees minor, and subscapularis) stabilize…
the shoulder during upper extremely movements.
antagonists:
muscles on the opposite side of a joint that are in direct opposition of agonist muscles.
stabilizers
muscles that contract isometrically to. stabilize the trunk and joints as the body moves.
synergists
muscles that assist agonists to produce a movement
agonists
the primary muscles providing force for a movement
antagonist: the biceps brachii (an elbow flexor) is an antagonist to
the triceps brachii during elbow extension (ie triceps pushdown)
antagonist: during elbow flexion, the triceps become the antagonist to
the biceps (ie biceps curl)
antagonist: the hip flexor complex is antagonist to
the gluteus maximum during hip. extension (ie squats)
antagonist: the latissimus doors is antagonist to
the deltoid during a shoulder press
length-tension relationship
the resting length of a muscle and the tension the muscle can produce at this resting length
altered-length tension relationship
what a muscles resting length is too short or too long, reducing the amount of force it can produce
reciprocal inhibition
when an agonist receives a signal to contract, its functional antagonist also receives an inhibitory signal allowing it to lengthen.
altered reciprocal inhibition
occurs when an overactive agonist muscle decreases the neural drive to its functional antagonist
integrated performance paradigm
forces dampened (eccentrically)
stabilized (isometrically)
accelerated (concentrically)
force-couple
the synergistic action of multiple muscles working together to produce movement around a joint
first class levers
fulcrum in the middle like a seesaw
nodding the head is first class lever
top of spinal Colum is fulcrum
second class levers
resistance in middle
fulcrum and effort on either side
similar to a load in wheelbarrow where the axle and wheel are the fulcrum opints
body acts as a second class lever when one engages in a
FULL-BODY PUSH UP
or CALF RAISE
third class levers
effort placed between the resistance and the fulcrum.
efforts always travels a shorter distance and just be greater than the resistance.
most limbs of the human body operation as third-class levers.
human forearm
fulcrum is the elbow, effort is applied by the biceps brachii, load in the hand
STANDING HAMSTRING CURL
knee joint is the fulcrum, hamstring is effort, resistance is at the ankle
motor behavior
motor response to internal and external environmental stimuli
motor learning
integration of motor control processes through practice and experience, leading to a relatively permanent change in the capacity to produce skilled motor behavior
motor development
change in skilled mortor behavior over time through the life span
internal feedback
process…sensory info used by body to reactively monitor movement and the environment
external feedback
info provided by some external source, such as a fitness professional, video, mirror, or heart rate monitor, to supplement the internal environment.
energy molecule used to do cellular work..
atp - adenosine triphosphate - made from food substrates consumed in the diet
fuels to create atp
glucose from carohydrates
free fatty acids from fat
amino acids from protein
ketone bodies
obtained mostly through diet
glycolysis process…
carbs broken down into glucose to produce atp
glycogen
glucose stored
body can store much less glycogen than fat
amino acids
by-product of protein breakdown ro digestion
oxidative phosphorylation
amino acids metabolized
not common in healthy people
protein usually reserved for building muscle rather than atp production
ketone bodies
produced by liver during low energy intake or carb availability
can be oxidized by oxidative phosphorylation pathway to create ATP
ATP-PC
Simplest and fastest way to generate ATP
SHORT DURATION BC SUPPLY OF pc IS LIMITED
glycolysis
anaerobic process
generated atp quickly
not a lot of atp
end products of glycolysis are ATP & PYRUVATE… which can become LACTATE under anaerobic conditions
OXIDATIVE PHOSPHORYLATION
process that uses oxygen to create apt from substrate molecules at relatively slow rate
oxidative phosphorylation
pyruvate (from glucose)
fatty acids
amino acids
ketone bodies as substrate molecules
oxidative metabolism produces CARBON DIOXIDE as a by-product which is then exhaled.
interittent
frequent changes in work requirements intensity
when unable to talk.. oxidizing almost
exclusively carb to fuel to the activity
lower intensity burns..
high percentage of fat but not a lot of calories unless performed a long time
higher intensity…
higher percentage of energy from carbs
usually burn more total calories
energy balance
food intake matches energy needs
TDEE
Total daily energy expenditure
Total daily energy expenditure TDEE
total amount of calories a person burns in a day
calories
basic unit of energy provided by food, and the total number of calories that a person burns in a day is called the total daily energy expenditure
RMR
RESTING METABOLIC RATE
minimum number of calories needed at least to keep a person alive and meet all functional needs of the body
RMR
resting metabolic rate
TEF
THERMIC EFFECT OF FOOD
number of calories that are used to digest a meal
TEF thermic effect of food
NEAT *** love this one
NONEXERCISE ACTIVITY THERMOGENESIS
involved burning calories in activities that are non structured exercise
EAT
Exercise Activity Thermogenesis
calories burned during structured physical activity or purposeful exercise
essential amino acid
9
must be obtained through diet
ATP-PC
An energy system that provides energy very rapidly, for approx 10-15 seconds, via ANAEROBIC METABOLISM
short sprints
Olympic weightlihting
jumping and plyometrics
glycolytic system
a metabolic process that occurs in the cytosol of a cell that converts glucose into pyruvate and adenosine triphosphate.
anaerobic glycolysis refers to…
when this process of glycolytic system occurs in the absence of oxygen.
it lasts longer, with a capacity of approx 30-60 seconds of during
examples strength training 8-12 reps
oxidative system
the most complex of the three energy systems is the oxidative system… a process that uses oxygen to convert food substrates into atp.
this process is called oxidative phosphorylation
its defined as an aerobic process bc it needs oxygen
examples with oxidative system include
jogging and running for an extended period
TEF
energy required to digest, absorb and process nutrients that are consumed
protein calories
4 per gram
carbohydrate calories
4 per gram
fat calories
9 per gram
alcohol calories
7 per gram
AMDR acceptable macronutrient distribution range
protein
10-35% of total calories
AMDR acceptable macronutrient distribution range
carbohydrate
45 - 65% of total calories
AMDR acceptable macronutrient distribution range
lipid (fat)
20 - 35% of total calories