title: Effects of a Dynamic Warm-Up, Static Stretching or Static Stretching with Tendon Vibration on Vertical Jump Performance and EMG Responses.
abstract: The purpose of this study was to investigate the short-term effects of static stretching, with vibration given directly over Achilles tendon, on electro-myographic (EMG) responses and vertical jump (VJ) performances. Fifteen male, college athletes voluntarily participated in this study (n=15; age: 22±4 years old; body height: 181±10 cm; body mass: 74±11 kg). All stages were completed within 90 minutes for each participant. Tendon vibration bouts lasted 30 seconds at 50 Hz for each volunteer. EMG analysis for peripheral silent period, H-reflex, H-reflex threshold, T-reflex and H/M ratio were completed for each experimental phases. EMG data were obtained from the soleus muscle in response to electro stimulation on the popliteal post tibial nerve. As expected, the dynamic warm-up (DW) increased VJ performances (p=0.004). Increased VJ performances after the DW were not statistically substantiated by the EMG findings. In addition, EMG results did not indicate that either static stretching (SS) or tendon vibration combined with static stretching (TVSS) had any detrimental or facilitation effect on vertical jump performances. In conclusion, using TVSS does not seem to facilitate warm-up effects before explosive performance.
authors: Ege University, School of Physical Education and Sports, Department of Coaching Education, Turkey.
authors: Bulent
authors: B
authors: Yapicioglu
authors: Ege University, School of Physical Education and Sports, Department of Coaching Education, Turkey.
authors: Muzaffer
authors: M
authors: Colakoglu
authors: Ege University, Faculty of Medicine, Dept. of Neurology, Division of Clinical Neurology, Izmir, Turkey.
authors: Zafer
authors: Z
authors: Colakoglu
authors: 18 Mart University, Faculty of Medicine, Dept. of Neurology, Division of Clinical Neurology, Canakkale, Turkey.
authors: Halil
authors: H
authors: Gulluoglu
authors: Ege University, Faculty of Medicine, Dept. of Neurology, Division of Clinical Neurology, Izmir, Turkey.
authors: Fikret
authors: F
authors: Bademkiran
authors: Ege University, School of Physical Education and Sports, Department of Coaching Education, Turkey.
authors: Ozgur
authors: O
authors: Ozkaya
keywords: Exercise; reflex; silent period; surface electromyography