Acute effects of whole-body vibration on running gait in marathon runners |
| |
| Authors: | Johnny Padulo Davide Filingeri Karim Chamari Gian Mario Migliaccio Giuseppe Calcagno Gerardo Bosco |
| |
| Institution: | 1. Tunisian Research Laboratory “Sports Performance Optimization”, National Center of Medicine and Science in Sport, Tunis, Tunisiasportcinetic@gmail.com;3. Environmental Ergonomics Research Centre, Loughborough Design School, Loughborough University, Loughborough LE11 3TU, UK;4. Research and Education Centre, Aspetar, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar;5. CONI – Italian Regional Olympic Committee, Sardinia, Cagliari, Italy;6. Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy;7. Department of Medicine, University of Padova, Padova, Italy |
| |
| Abstract: | AbstractThe aim of this study was to investigate the effects of a single bout of whole-body vibration (WBV) on running gait. The running kinematic of sixteen male marathon runners was assessed on a treadmill at iso-efficiency speed after 10 min of WBV and SHAM (i.e. no WBV) conditions. A high-speed camera (210 Hz) was used for the video analysis and heart rate (HR) was also monitored. The following parameters were investigated: step length (SL), flight time (FT), step frequency (SF), contact time (CT), HR and the internal work (WINT). Full-within one-way analysis of variance (ANOVA) of the randomised crossover design indicated that when compared to SHAM conditions, WBV decreased the SL and the FT by ~4% (P < 0.0001) and ~7.2% (P < 0.001), respectively, and increased the SF ~4% (P < 0.0001) while the CT was not changed. This effect occurred during the first minute of running: the SL decreased ~3.5% (P < 0.001) and SF increased ~3.3% (P < 0.001). During the second minute the SL decreased ~1.2% (P = 0.017) and the SF increased ~1.1% (P = 0.02). From the third minute onwards, there was a return to the pre-vibration condition. The WINT was increased by ~4% (P < 0.0001) during the WBV condition. Ten minutes of WBV produced a significant alteration of the running kinematics during the first minutes post exposure. These results provide insights on the effects of WBV on the central components controlling muscle function. |
| |
| Keywords: | kinematic analysis iso-efficiency speed internal work heart rate motor control |
|
|
