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
physiological changes of crossing LIP
increase V,TV,HR,blood lactate increase sharply to combat increase accumulation of met by products
active vs passive recovery
fatigue - accumulation of h plus ions
advantage of high LIP
because LIP is last point of balance bw lactate accumulation and removal . aerobic system is most sig. it is imperative to have a high LIP , allow to work higher intensities aerboically for longer and making sure AG system has minimal contributions for later –> putting of the accumulation of fatiguing metabolicc by products - improve performance and average speed
