The effect of resistance exercise with blood flow restriction on delayed onset of muscle soreness markers
Poster Presentation XML
Paper ID : 1652-11THCONF
2دانشگاه گیلان
3Department of Sport Physiology university of Gilan
Introduction: Resistance exercise with blood flow restriction (BFR) performed with light loads (20-30% 1 repetition maximum (1‌RM)) has been shown to increase muscle strength and mass greater than light load (LL) resistance exercise without BFR, and similar to heavy load (HL) resistance exercise. Despite the use of light loads, several studies have reported that lower body BFR resistance exercise to significantly elevate ratings of delayed onset muscle soreness (DOMS), ratings of perceived exertion (RPE) and pain when compared with LL. However, several investigations have observed greater elevations in RPE and pain during lower body BFR resistance exercise compared with light load non-BFR resistance exercise. The purpose of this study was to determine the magnitude of (DOMS) associated with BFR exercise to resistance exercise with either heavy loads (75% 1RM) and light loads (30% 1RM]) in combination with BFR.
Methodology: 12 young active female were assigned into two groups (n=8 for each) and performed the following resistance exercise protocols: the first group (the traditional resistance exercise was 75% with 1RM and a tempo of 1 to 1 for concentric to eccentric phase of muscle action), the second group (BFR exercise with a 30% 1RM intensity, a tempo of 1 to 1, and a cuff pressure of 140 mmHg). Two trials, participants performed four sets of leg press exercise was with 10 repetitions and between 60s rest sets. 5ml blood samples were taken from brachial vein of subjects at before, 24, 48 and 72th hour after exercise.
Results: Creatine Kinase (CK) increased significantly in both two groups for 24th and 48th hour post exercise (p<0.05); also, Lactate dehydrogenase (LDH) increased significantly in HL group for 48th hour and for LL BFR group for 24th hour post exercise (p<0.05); Aspartate amino transferase (AST) increased significantly in both two groups for 24th hour post exercise (p<0.05); At 24th post-exercise, BFR exercise lead to more soreness by elevations in LDH and AST than exercise without BFR (p<0.05).
Discussion: Resistance exercise with BFR could be along with more DOMS. However, it seems that resistance exercise with BFR may be less than desirable for use in clinical populations despite the potential beneficial adaptations in muscle strength and mass.