BFR HIGH YIELD

Question 1

this involves the application of a restrictive device like a pressurized cuff to the proximal portion of the lower or upper extremities

maintains arterial inflow to the muscle while preventing venous return

Answer 1

blood flow restriction

Question 2

how many sets/reps?

Answer 2

4 sets of 30, 15,15, and 15 reps with 30 sec rest between sets

Question 3

when used?

Answer 3

aches, pains, injury

Question 4

BFR restriction was initially invented in Japan and known as? used for?

Answer 4

KAATSU

improvement in athletic performance

rehab

anti-aging and preventative care

space travel

Question 5

what are the examples of compressive devices used in BFR?

Answer 5

compression bands

BFR bands

occlusion cuff

Delphi tourniquet system

Question 6

cuff placement? pressure?

Answer 6

proximal and lower extremity

Pulse- 80% of auscultation cutoff
140-240 mmHg LE
100-160 mmHg UE
Delphi- self measuring 
Bands- 4-5/UE, 6-7/10LE

Question 7

a smaller width cuff requires?

Answer 7

greater pressure

Question 8

a larger width cuff requires?

Answer 8

reduction in pressure

Question 9

how does BFR work?

Answer 9

more recruitment of fast twitch fibers

elevated accumulation of H+ ions and lactate in muscle

deformation of muscle resulting in greater growth factor release

relies on glycolysis

Question 10

what is affected?

Answer 10

musculotendinous unit alterations

endocrine response

systemic and cardio response

cellular adaptations

Question 11

what is the affect of the endocrine response?

Answer 11

increase in lactate promotes large amount of increase in GH

growth hormone-> collagen synthesis

low pH levels-> sympathetic nn-> inc in GH production in anterior pituitary

increase in IGF-1

decrease in myostatin

Question 12

what is the affect of the endocrine response?

Answer 12

satellite cells stimulated

increased venous compliance promoting increased post exercise blood flow

shown to help decrease blood pressure in medicated hypertensive patients via hypotensive response

decreased SV, SBP, DBP

increased VO2

Question 13

what is the affect of cellular adaptations?

Answer 13

cellular uptake of H2O and metabolites (IGF-1, lactate, acidic environment)

Question 14

intensity of BFR exercise for effectiveness?

Answer 14

low-intensity exercise for adaptations

walking
cycling
20% 1 RM
w/o exercise

Question 15

improvements seen with BFR and aerobic exercise?

intensity level and duration?

Answer 15

SV
glycogen stores
oxidative enzymes
heart rate

both reduced

Question 16

BFR flow chart?

Answer 16

mech tension

hypertrophy

skeletal muscle damage

metabolic stress