Benefits of Aerobic Exercise Flashcards
Increased CHO Oxidation Because:
- incr size and # of mitochondria
- incr activity level & incr quantities of enzymes of krebs and ETC
- incr ability to store glycogen
Increased Oxidation of Fats Because:
- incr intramuscular stores of triglycerides (incr transport from plasma)
- incr availability of free fatty acids from adipose tissue
- incr # mitochondira & enzymes
- incr activity of enzymes in fatty acid break down
Lungs
sub max ex’s
-lower minute ventilation for given workload
Muscle
sub max ex’s
- decreased myocardial O2 cost
- decr Mm glycogen use
- incr threshold for onset of blood lactate accumulation
With increased aerobic exercise: _____
aerobic system
capacity to utilize aerobic system increases
Increased Oxidation of CHO=
incr capacity to use aerobic system
Myoglobin
Oxygen store & aids in delivering O2 from cell membrane to mitochondria
Biochemical Changes from Aerobic Exercise
- increased myoglobin content
- incr oxidation of CHO
- incr oxidation of fats
Increased Stroke Volume
at rest
- ventricular cavity incr in size
- allow incr filling
CO
at rest
- stays the same
- because SV increases but RHR decreases
Increased Oxidation of Fats=
-at a given submax workload, fats are utilized at a higher % in those that ex’s regularly than those who don’t
Increased oxidation of fats results in:
- decr glycogen depletion
- decr lactic acid accumulation (decr change pH)
- decr fatigue
Fatty acid break down
-beta oxidation
Heart
at rest
- incr SV
- decr RHR
- Max HR same
Max HR
at rest
no change
