TY - JOUR
TI - Short-Term Blood Flow Restriction Increases Power Output and Bar Velocity During the Bench Press.
AU - Wilk, Michal
AU - Krzysztofik, Michal
AU - Filip, Aleksandra
AU - Zajac, Adam
AU - Bogdanis, Gregory C.
AU - Lockie, Robert G.
JO - Journal of strength and conditioning research
PY - 2020
VL - null
TODO - null
SP - null
PB - 
SN - 1064-8011
TODO - 10.1519/JSC.0000000000003649
TODO - null
TODO - Wilk, M, Krzysztofik, M, Filip, A, Zajac, A, Bogdanis, GC, and Lockie, RG. Short-term blood flow restriction increases power output and bar velocity during the  bench press. J Strength Cond Res XX(X): 000-000, 2020-This study examined the effect  of blood flow restriction (BFR) with 2 different types of cuffs on peak power output  (PP), mean power output (MP), peak bar velocity (PV), and mean bar velocity (MV) in  the bench press exercise (BP). Fourteen healthy strength-trained male athletes (age  = 27.6 ± 3.5 years; body mass = 84.1 ± 8.0 kg; height = 175.8 ± 6.7 cm; BP 1  repetition maximum [RM] = 138.6 ± 17.8 kg) performed 3 different testing protocols  as follows: without BFR (NO-BFR), BFR with a narrow cuff (BFRNARROW), and BFR with a  wide cuff (BFRWIDE) in a randomized crossover design. During all sessions, subjects  performed one set of 3 repetitions of the BP exercise using 70% 1RM. Cuff pressure  was set to approximately 90% full arterial occlusion pressure of the upper limb at  rest. Analyses of variance showed an increase in PP (by 21%, p < 0.01; effect size  [ES] = 1.67), MP (by 16%, p < 0.01; ES = 0.93), PV (by 22%, p < 0.01; ES = 1.79),  and MV (by 21%, p < 0.01; ES = 1.36) during BFRWIDE compared with NO-BFR and a  significant increase in PP (by 15%, p < 0.01; ES = 1.07), MP (by 17%, p < 0.01; ES =  0.78), PV (by 18%, p < 0.01; ES = 1.65), and MV (by 13% p < 0.01; ES = 1.00) during  BFRWIDE compared with BFRNARROW. There were no significant differences in any of the  variable between NO-BFR and BFRNARROW. The results of the study indicate that  short-term BFR training increases power output and bar velocity during the BP  exercise. However, only BFRWIDE significantly influenced bar velocity and power  output, which indicates that the width of the cuff is a critical factor determining  acute exercise adaptation during BFR resistance training.
ER -