Hydration restoration of working regions of the body during active recovery after standard exercise

The work investigated the dynamics of hydration of the regions during active and passive recovery (50 min) after standard physical activity with one lower limb (3 min, flexion of the leg at the knee joint with a weight) in 10 physically active persons. The hydration of body regions (working and non-working thighs, trunk) was assessed by monitoring active resistance (1 Hz, bioimpedance analyzer, Medass, Moscow). In the experiment with passive recovery, the subjects lay motionless for 50 minutes; with active recovery, they flexed the working leg at the knee joint without a weight agent every 3 minutes of the passive period. It was found that slight flexion of the limb causes a decrease in the rate of dehydration of loaded muscles during the period of active recovery and counteracts fluids outflow towards the trunk. Thus, active recovery ensures the flow and retention of fluid in the active muscles, which allows them recover more efficiently.