Influence That Lower Limbs Blood Flow Restriction Exerts On Muscular Activity Of Hip Abductor Muscles: 1711 Board #364 June 2, 9: 00 AM - 10: 30 AM.

INTRODUCTION: In the blood flow restriction(BFR) training to which the base of limbs is pressed with the cuff, the amount of the muscular activity on not only limbs but also the truncus sides increased (Yasuda et al 2010). It is guessed that the tiredness at the early stage of the muscle of the distalis pressed the muscular activity of the proximally from the cuff. We set up and verified the hypothesis of not showing the influence in the amount of the muscular activity of the hip abductor in hip joint abduction that the tiredness at the early stage in the distal portion is not accompanied from the belt installation part. PURPOSE: To compare the EMG activity of blood flow restricted (distal) and non-restricted (proximal) muscles during hip abduction exercise with and without restricted leg muscle blood flow. METHODS: Nine healthy adults, mean age (SD) age: 31.0 (4.5) yrs, performed 3 sets of hip abduction exercise during two different conditions: restricted leg muscle blood flow (R) and non-restricted (NR). A specially designed cuff in the condition of R was placed at the most proximal position of the thigh and inflated to a pressure to 220(21)mmHg. Surface EMG was recorded from the muscle belly of the gluteus medius (GM), tensor fasciae latae (TFL) and rectus femoris (RF) muscles, and mean RMS. RMS; normalized as the relative exercise intensity (%). RESULTS: During 3 sets of exercise, gradual increases in RMS were not observed (p