Ex. Phys. Training Theory and Exercise Adaptations Flashcards
fitness dimensions
muscular adaptations -muscular strength -muscular endurance -muscular power -muscular hypertrophy metabolic adaptations -aerobic power (cardiorespiratory endurance) -anaerobic power (anaerobic work capacity) flexibility
muscular strength
- what is it?
- measured via
the maximum force that can be generated from a muscle in a single effort measured via -1-repetition maximum -force plates no time component
muscular endurance
- what is it?
- adaptations
- measured via
the ability to perform repeated, high-intensity contractions or to sustain a single, high-intensity contraction (wall sit) for a long period of time
adaptations in muscular endurance are generally confined to a specific muscle group
measured via
-times or maximal rep tests
muscular power
- what is it?
- calculation
- measured via
- force x distance =
the rate of work performed by a muscle calculated using the following equation -power = (force x distance) / time think of force as muscular strength and distance/time as speed measured via -isokinetic dynamometers -motion analsis -vertical jump force x distance = work
muscular hypertrophy
the girth (or increasing girth) of a muscle measured via -measuring tapes -lean body mass (LBM) estimates -muscle biopsies
aerobic power (cardiorespiratory endurance)
- what is it
- another way to define it
- measured via
entire body’s ability to perform prolonged, large muscle dynamic exercise at a moderate-high intensity
this also can be considered the body’s ability to generate ATP via mitochondrial respiration
adaptations in aerobic power generally affect the whole body
measured via
-VO2max
anaerobic power (anaerobic work capacity)
- what is it
- difference from anaerobic capacity
- measured via
the amount of mechanical work performed using primarily an ATP yield derived from anaerobic energy systems (immediate system and glycolysis)
different than anaerobic capacity, which is the maximum amount of ATP production from anaerobic energy systems
measured via
-wingate
-critical power tests
-maximal accumulated oxygen deficit (MAOD)
flexibility
- what is it?
- measured via
the ability to move joint throughout their full range of motion (ROM)
measured via
-goniometry and/or joint specific “functional” tests
principles of exercise training
progressive overload specificity individuality reversibility FITT hard/easy
progressive overload
- what is it?
- based on
placing increasing amounts of stress on the body will elicit adaptations that improve fitness
-exemplified by the legend of Milo
based on Hans Selye’s General Adaptation Syndrome (GAS)
-in response to a stressor, the body responds in three stages: alarm, resistance, and exhaustion
legend of Milo
5th C greek wrestler
had a baby bull
bull got bigger
-when Olympics came, he carried the adult bull on his back into the arena
specificity
- what is it
- example
- this is the foundation of
the body will adapt to a particular type and amount of stress imposed on it
for instance, performing aerobic exercise will not likely improve muscular strength, nor will stretching improve VO2max
this is the foundation of “functional training”
individuality
some people readily show improvements in response to a particular form of exercise (responders) whereas some people do not (non-responders)
reversibility
fitness adaptations are lost when the exercise demands placed on the body are lowered
FITT
-time and type relationship
acronym to guide exercise prescription F = frequency of exercise sessions I = intensity of each exercise session T = time, duration, or volume of each exercise session T = type or mode of exercise performed choose type first time and type are inverse
hard/easy
hard exercise stresses your body
-starts the alarm phase, which allows the other 2 phases to occur
easy exercise facilitates recovery
aerobic training general training recommendations
> or equal to 3 sessions per week
or equal to 60% of VO2max or 60-80% HRR (heart rate reserve)
-max HR - bottom HR
-0.8 x HRR = #
20 minutes per session
any mode of exercise that permits the above recommendations
aerobic training neuromuscular recruitment
improved motor unit syncing
-developing motor program (ice skating, as he practices he only turns on certain motor units at specific times)
co-activation of muscles
-how you fire groups of muscles together
-ice skating: turns on all muscles in a group when he only needs a few muscles in a group
reciprocal inhibition
-as you utilize the stretch reflex during the coactivation of muscles, the antagonistic muscle turns off
muscle fiber changes
many type IIx --> type IIa -in response to aerobic training, they transition to better suit aerobic needs increased size and function of type I and type IIa increased myoglobin content (esp. type I) increased mitochondria (esp. type I)
aerobic training metabolism
increased oxidative enzyme activity increased VO2max increased lactate threshold decreased resting and submax RER -lipids: 0.8 -carbs: 0.9
aerobic training cardiac function
left ventricular hypertrophy (not as much as seen with RT)
-myocardium thickens
improved HR recovery
decreased resting HR and submax HR; max HR unaffected
-due to increased PSNS activity
increased resting, submax, and max SV
unaffected resting and submax Q; increased max Q
aerobic training circulation
increased capillary density (especially in type I fibers) -focus of base training in runners greater dilation of existing capillaries -EDRF production is increased as a result of metabolic factors improved blood distribution increased blood volume -both for plasma volume and RBC volume decreased resting and submax SBP/DBP
aerobic training respiratory system
decreased submax VE (100 L to 90 L at 100 W), increased max VE (200 W and 175 L to 225 W to 200 L
aerobic training exercise performance
increased aerobic power
improved submaximal endurance capacity
decreased metabolic cost for submaximal workloads
-6 kcal/min to 5 kcal/min