PURPOSE: The aim of this study was to investigate the effects of different whole-body vibration (WBV) frequencies on oxygenation of vastus lateralis (VL) and gastrocnemius medialis (GM) muscles during static squatting in sedentary and physically active healthy males. METHODS:Twenty volunteers (age: 24.6 +/- 2.9 yr; body mass: 80.6 +/- 11.8 kg; height: 178.1 +/- 7.6 cm) participated in this study. Ten subjects were sedentary individuals and 10 were athletes practicing different sports. All subjects completed four trials (control, and 30-, 40-, and 50-Hz WBV) in a randomized controlled crossover design. The trials consisted of static squatting on a vibrating platform for a total duration of 110 s. Muscle-oxygenation status was recorded with near-infrared spectroscopy. RESULTS: The data analysis revealed no significant treatment-by-time interactions in tissue-oxygenation index (TOI) or Delta total hemoglobin volume (tHb) in VL and GM muscles. A significant main effect of time in TOI of both VL and GM muscles was identified (P<0.001). VL TOI significantly decreased by 2.8% at 90 s in the control condition and by 3.3% at 110 s in the 30-Hz condition; VL TOI significantly increased by 2.1 and 3.0% at 30 s in the 40- and 50-Hz conditions, respectively. GM TOI significantly decreased by 3.2% at 60 s, by 4.1% at 90 s, and by 4.3% at 110 s in the control condition, and by 5.5% at 110 s in the 30-Hz condition. CONCLUSION: This study showed that WBV exercise with frequencies of 30, 40, and 50 Hz and small amplitudes does not affect muscle oxygenation of VL and GM muscles to a higher degree than a nonvibration condition.
RCT Entities:
PURPOSE: The aim of this study was to investigate the effects of different whole-body vibration (WBV) frequencies on oxygenation of vastus lateralis (VL) and gastrocnemius medialis (GM) muscles during static squatting in sedentary and physically active healthy males. METHODS: Twenty volunteers (age: 24.6 +/- 2.9 yr; body mass: 80.6 +/- 11.8 kg; height: 178.1 +/- 7.6 cm) participated in this study. Ten subjects were sedentary individuals and 10 were athletes practicing different sports. All subjects completed four trials (control, and 30-, 40-, and 50-Hz WBV) in a randomized controlled crossover design. The trials consisted of static squatting on a vibrating platform for a total duration of 110 s. Muscle-oxygenation status was recorded with near-infrared spectroscopy. RESULTS: The data analysis revealed no significant treatment-by-time interactions in tissue-oxygenation index (TOI) or Delta total hemoglobin volume (tHb) in VL and GM muscles. A significant main effect of time in TOI of both VL and GM muscles was identified (P<0.001). VL TOI significantly decreased by 2.8% at 90 s in the control condition and by 3.3% at 110 s in the 30-Hz condition; VL TOI significantly increased by 2.1 and 3.0% at 30 s in the 40- and 50-Hz conditions, respectively. GM TOI significantly decreased by 3.2% at 60 s, by 4.1% at 90 s, and by 4.3% at 110 s in the control condition, and by 5.5% at 110 s in the 30-Hz condition. CONCLUSION: This study showed that WBV exercise with frequencies of 30, 40, and 50 Hz and small amplitudes does not affect muscle oxygenation of VL and GM muscles to a higher degree than a nonvibration condition.
Authors: Stephen J Ives; Paul J Fadel; R Matthew Brothers; Mikael Sander; D Walter Wray Journal: Am J Physiol Heart Circ Physiol Date: 2014-01-10 Impact factor: 4.733
Authors: Adeola A Sanni; Anson M Blanks; Cassandra C Derella; Chase Horsager; Reva H Crandall; Jacob Looney; Savanna Sanchez; Kimberly Norland; Bingwei Ye; Jeffrey Thomas; Xiaoling Wang; Ryan A Harris Journal: Physiol Rep Date: 2022-03