| 英文摘要 |
Introduction: Compression garment (CG) provide a means of compressing and perhaps stabilizing/supporting underlying tissue, thereby reducing muscle oscillation upon landing from a vertical jump and this may have benefit in terms of optimized neurotransmission and reduced tissue injury. However, it was unknown whether the CG might result in reduced muscle oscillation and muscle activation during long-time running. Therefore, the purpose of this study was to investigate the effects of wearing compression garment on muscle oscillation and muscle activation during long-time running for recreational runner. Methods: Six recreational runners participated in the study. Each subject rans for 40 min (80 ± 5% maximal oxygen uptake) wearing compression garment (CG) and loose garment (LG, loose-fitting gym shorts) by counterbalance experimental design, respectively. The DELSYS surface electromyography system was used to measure the muscle oscillation and muscle activation in lower limb muscles (rectus femoris, vastus lateralis, semitendinosus, tibialis anterior and gastrocnemius) at initial running (first min) and ending running (last min). The Wilcoxon signed rank test of Nonparametric test was used to compare the differences between garments and times. Results: The rectus femoris and gastrocnemius muscles oscillation in swing phase at initial running wearing CG were significantly lower than LG, and lower semitendinosus in swing phase at ending running with CG (p < .05). The semitendinosus muscle activations in stance phase at initial running and in swing phase at ending running wearing CG were significantly lower than LG, respectively (p < .05). Conclusion: Wearing CG reduced muscle oscillation of certain lower extremity for recreational runners and enhanced efficiency of muscle activation during long-time running. |
