Introduction: Compressive stockings (CS) are widely used in sport. However it is unknown the best compression parameters. Most of the studies have not measured interface pressure (pressure) applied by the sports garments being investigated (Dirller & Halson, 2013) Pressure applied by sport CS is affected by garment type, size and posture. (Brophy-Williams at al, 2015). The objective of the study is to determine the interface pressure (pressure) applied using two CS: medium compression (MCS) and strong compression stocking (SCS), in three conditions: before, while and after the running test. Methods: 10 male runners (age [35 ± 5 years]) carried out 2 laboratory tests (1.without any stocking; 2.MCS in a leg and SCS in the other leg, in a randomized way). At each test participants ran for 35 minutes on treadmill (5 min at 8km/h + 30 min at 75% of their maximal aerobic speed, previously measured in an incremental running test). Pressure was measured by Pico Press.. in four regions (two on the maximum perimeter of the calfs, one on the external supramalleolar and one on anterior tibial area). Measurements were taken in static before and after test and in dynamics, every 5 minutes of running. The factor `compression type` was analyzed by the T test. The factor `running` by the U test of Mann-Whitney. The factor `sensors` by ANOVA and the post-hoc Tukey test. (P <0.05) Results: In static, all pressure sensors reported lower parameters after running test (p<0,001). Mean pressure was greater in MCS (20.95 ± 6.17 mmHg) compared to SCS (18.98 ± 6.08 mmHg) (p < 0.05). In both conditions MCS (p <0.05) and SCS (P <0.001), pressure was higher in proximal than distal sensors. In dynamic mean pressure was greater in proximal sensor (p <0.001) at both "compression type". Discussion: The optimal method of applying compression to increase blood flow is by highest pressure exerted at the distal end of the limb decreasing to a lower pressure at the proximal end of the limb (Bochmann et al, 2005). Manufacturer of studied CS exposes their gradual decreasing compression In contrast with our results that, CS pressure is higher in the proximal than the distal area (MCS and SCS) in dynamic and static conditions. It is important to reconsider the principles used to predict the final compression in these garments. Exercise showed mechanical fatigue characteristics of the CS evaluated on the calf muscle, or maybe it is due to changes in the behaviour of the muscle. This lower pressure at the end of the test is important to take into account by manufacturers. In conclusion, although CS exert different pressures, optimal pressure to induce the greatest increase in venous flow is yet to be determined, and it is also interesting to know if companies measure the pressure. ABSTRACT FROM AUTHOR
© Copyright 2016 21st Annual Congress of the European College of Sport Science (ECSS), Vienna, 6. -9. July 2016. Veröffentlicht von University of Vienna. Alle Rechte vorbehalten.