Efeitos provocados pelo uso da bota compressão pneumática intermitente sobre indicadores de recuperação muscular pós corrida em declive

Abstract

The intermittent pneumatic compression boot (IPCB) has gained several followers for its possible assistance in the treatment of muscle recovery after physical exercise. has gained several followers due to its possible aid in muscle recovery after physical exercise. has gained several followers due to the possible benefits of muscle recovery after physical exercise. The objective of the study was to evaluate the effects caused using the intermittent pneumatic compression boot (IPCB) on muscle recovery markers in the lower limbs after a downhill run. The study included 17 men (23.3 ± 2.4 years, 82 ± 14.8 kg and 173 ± 0.06 m), physically active with no history of injuries to the lower limbs (LL) and no cardiorespiratory changes. Initially (-72h) the maximum aerobic speed (MAS) of all participants was determined (14.7±1.53 km/h). The downhill running protocol (DRP) consisted of 6 sets of 5 minutes with 2 minutes between sets for rest. The slope adopted was -3°, and the intensity corresponded to 70% of the VMA (0h). One of the MI was randomly selected to receive the IPCB application, while the opposite limb received a placebo (therapeutic ultrasound turned off). Both procedures lasted 30 minutes and were performed after exercise, 24h and 48h after DRP. Indicators of delayed muscle pain (DMP) and muscle quality in the Rectus Femoris (RF) and Vastus Lateralis (VL) were evaluated at pre, 24h, 48h and 72h after DRP, in addition to concentric peak torque (PT) (C) and eccentric (E) in knee flexors and extensors, of both limbs in the pre, post, 24h, 48h and 72h moments after DRP. Data normality was assessed using the Shapiro-Wilk test. Comparison between groups was performed using two-way ANOVA (time vs. treatment) followed by Tukey posthoc. The significance level adopted was p<0.05. Effects of time were observed for RF DMP (F=5.160; p<0.0001; η2p=3.04) and time-treatment interaction for VL DMP (F=5.160; P<0.0001; η2p=0 .02), indicating that the use of BCPI was efficient in promoting lower DMP values in this region when compared to placebo. Regarding RF echo-intensity, there was no effect of treatment (F= 1.32; p=0.7852; η2p=0.02) and time (F=5.16; p=0.0586; η2p= 0.08). Similar results were also observed in relation to VL echo intensity, where no effects of treatment (F=1.32; p=0.5940; η2p=0.04) and time (F=4.128; p=0.04) were observed. 3802; η2p=0.04). In relation to the torque parameters evaluated, time effects were observed for concentric PT of knee extensors (F=5.16; p<0.0001; η2p=0.29), concentric PT of knee flexors (F=5 .16; p<0.0001; η2p=0.53) and eccentric PT of extensors (F=5.16; p<0.0001; η2p=0.28) and eccentric PT of flexors (F=5.16 ; p <0.0001; η2p=0.53). We can conclude that the use of BCPI after DRP was only effective in reducing DMP in the VL region.