Feedforward and Feedback Function of Selected Lower Limb Muscles Following Plyometric Exercises and Cryotherapy

Purpose: Despite the widespread use of cryotherapy in sports, there is no specific evidence its impact on muscle activation, especially following fatigue-induced exercises. This study aimed to assess alone and after plyometric exercises knee activation during drop jump task. Methods: A total 35 active female subjects (mean±SD age 22.74±2.10 years, mean body mass index [BMI] 20.02±2.55 kg/m2) participated this quasi-experimental with a pretest-Post-test design. There were three experimental groups (20-minute cryotherapy, plyometric, plyometric-cryotherapy) control group. Electromyography (EMG) amplitudes (rectus femoris [RF], biceps [BF], tibialis anterior [TA], medial gastrocnemius [MG]) measured compared phases drop-jump task (one feedforward preactivation two feedback eccentric concentric phases). Skin temperature was recorded before cooling intervention as well. For comparisons, repeated measure analysis variance (ANOVA) used at significant level 0.05. Results: The results showed that skin decreased significantly maintained for 20 minutes. No changes observed EMG muscles phase any (P>0.05). However, RF immediately minutes an (P=0.01) had difference from group (P=0.01); besides, plyometric-cryotherapy (P=0.01). differences seen between them Conclusion: According present results, training minor effect functional jumping movement, but these biomechanics insignificant; hence, further studies are essential better conclusion.