acute responses and energy systems Flashcards
what does the respiratory system refer to
the respiratory airways
cardiovascular system meanings
cardio is the heart and vascular is the blood/ blood vessels
muscular systems
focus on muscle fibres and energy/ mitochondria
acute respiratory responses
increase V,TV,RR, Pulmonary diffusion and O2 uptake
relationship between ventilation , RR and TV
RR is a linear increase in response to exercise intensity increasing because of O2 demand increasing.TV increases but will plateau at sub max because reaches sub max . The HR will continue to increase and contribute to increase ventillation
arteries
carry the blood away from heart - oxygenated
veins
carry the blood back to the heart - deoxygenated
venous return
returning blood back to the heart , need assistance through one way valves etc.
venous pooling - when blood pools in the veins in the legs after exercisr and will not return to the heart - decrease in O2 to the uscles and decrease intensity
cardiovascular responses
increase SV,HR,Q ,Systolic BP, redistribution of blood and decrease blood plasma
systolic and diastolic BP
systolic - contraction and when blood empty in the heart
diastolic- when heart relaxes and fills - not change ( lower value)
acute muscular responses
increase motor unit recruitment , firing rate, A-VO2- difference, accumulation of met by products, depletion of fuels , increase heat
hypothermia
hyperthermia
A-Vo2 - difference
motor unit
made up of motor neurons and muscle fibres it stimulates
EPOC - what and why
o2 supply exceeds demand - thermoregulation, removal of by products and replenish CP
factors affecting O2 deficit and EPOC
higher intensity, heat, aerobic capacity/ fitness, dehydration
energy - production of ATP
impacts on fuel that is used
fuel availability, O2 availability, intensity, recovery and rate of ATP resynthesis
fuels at submax and rest
carbs - 33% rest 66% submax
vice versa for fats/lipids
5 features of each - CP,AG, aerobic
differences between aerobic and anaerobic
anaerobic -
no need for O2, fast rate, finite capacity, AG form lactic acid
aerobic-
need O2, large yield of ATP , not provide energy quick enough for high intensities
LIP
the last point of balance between lactate accumulation and removal
74% VO2 and 85% MHR
ABILITY TO WORK AT HIGH INTENSITY AERBOICALLY
crossing LIP