Acute effects of local vibration on muscle performance at different durations and frequencies

Download
2010
Yıldırım, Ahmet
The purpose of the present study was to investigate the acute effects of local vibration on muscle performance at different durations and frequencies. Fifteen male handball players participated in the study voluntarily. University’s Ethics Committee approved the study and the informed consent forms were filled by all participants. Different vibration durations, (10 sec, 1 min, 10 min), different frequencies (40 and 80 Hz), dominancy (dominant and non-dominant) and conditions (vibration and no-vibration) were independent variables of study. Dependent variables were maximum isometric strength measures under different situations. One way Repeated measures ANOVA, Bonferoni adjusted paired sample t-tests and Two way Repeated ANOVA was used for statistical analyses. Result of this study demonstrated that local vibration (LV) induced significantly higher muscle activity than no vibration (NV) condition. Strength improvements were obtained in quadriceps muscles of dominant and non-dominant legs for 40 Hz and 80 Hz. When 40 Hz vibration was applied to dominant leg with different durations (10 sec, 1 min, 10 min), significantly higher strength measures were found than no vibration. When 80 Hz vibration was applied to dominant leg with different durations (10 sec, 1 min, 10 min), only 10-sec vibration duration revealed significant increase in strength measures. When 40 Hz vibration was applied to non-dominant leg with different durations, (10 sec, 1 min, 10 min) significantly higher strength measures were found than no vibration. When 80 Hz vibration was applied to non-dominant leg with different durations (10 sec, 1 min, 10 min), 10-sec and 1 min vibration durations revealed significant increase in strength measures. However, no significant difference was obtained when the different vibration durations were compared between 40 Hz and 80 Hz.

Suggestions

Acute effects of static stretching, dynamic exercises, and high volume upper extremity plyometric activity on tennis serve performance
GELEN, ERTUĞRUL; Dede, Muhittin; BİNGÜL, BERGÜN MERİÇ; BULGAN, ÇİĞDEM; AYDIN, MENŞURE (2012-12-01)
The purpose of this study was to compare the acute effects of static stretching; dynamic exercises and high volume upper extremity plyometric activity on tennis serve performance. Twenty-six elite young tennis players (15.1 +/- 4.2 years, 167.9 +/- 5.8 cm and 61.6 +/- 8.1 kg) performed 4 different warm-up (WU) routines in a random order on non-consecutive days. The WU methods consisted of traditional WU (jogging, rally and serve practice) (TRAD); traditional WU and static stretching (TRSS); traditional WU a...
Vibration Fatigue Analysis of a Cantilever Beam Using Different Fatigue Theories
Eldoğan, Yusuf; Ciğeroğlu, Ender (2014-02-11)
In this study, vibration fatigue analysis of a cantilever beam is performed using an in-house numerical code. Finite element model (FEM) of the cantilever beam verified by tests is used for the analysis. Several vibration fatigue theories are used to obtain fatigue life of the cantilever beam for white noise random input and the results obtained are compared with each other. Fatigue life calculations are repeated for different damping ratios and the effect of damping ratio is studied. Moreover, using strain...
Differential modulation of STN-cortical and cortico-muscular coherence by movement and levodopa in Parkinson's disease
Hirschmann, J.; Özkurt, Tolga Esat; Butz, M.; Homburger, M.; Elben, S.; Hartmann, C. J.; Vesper, J.; Wojtecki, L.; Schnitzler, A. (2013-03-01)
Previous research suggests that oscillatory coupling between cortex, basal ganglia and muscles plays an important role in motor behavior. Furthermore, there is evidence that oscillatory coupling is altered in patients with movement disorders such as Parkinson's disease (PD).
Theoretical limits to sensitivity and resolution in magneto-acousto-electrical tomography
GHALICHI, Elyar; Gençer, Nevzat Güneri (2017-10-21)
In this study, the performance of magneto-acousto-electrical tomography (MAET) is investigated quantitatively by considering interrelations between its sensitivity, resolution and conductivity contrast. An analytical solution for the forward problem of MAET is derived for two-dimensional (2D) concentric bodies by the separation of variables method. The electric potential and the acoustic pressure are separated into their angular and radial components. The series coefficients for these solutions are obtained...
Muscle strength and function of shoulders with Bankart lesion after successful arthroscopic treatment: interlimb comparison 24 months after surgery
Tahta, Mesut; Akmese, Ramazan; Ozberk, Zekiye Nisa; Coskun, Ozlem Oner; Isik, Cetin; Korkusuz, Feza; BOZKURT, MURAT (2013-12-01)
The purpose of this study was to examine outcomes following arthroscopic Bankart repair with the focus on strength after the repair.
Citation Formats
A. Yıldırım, “Acute effects of local vibration on muscle performance at different durations and frequencies,” Ph.D. - Doctoral Program, Middle East Technical University, 2010.