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Vibration exercise (VbX) has gained popularity as a warm-up modality to enhance performance in golf, baseball, and sprint cycling, but little is known about the efficacy of using VbX as a warm-up before resistance exercise, such as deadlifting. The aim of this study was to compare the effects of a deadlift (DL)-specific warm-up, VbX warm-up, and Control on DL power output (PO). The DL warm-up (DL-WU) included 10, 8, and 5 repetitions performed at 30, 40, and 50% 1-repetition maximum (1RM), respectively, where the number of repetitions was matched by body-weight squats performed with vibration and without vibration (Control). The warm-up conditions were randomized and performed at least 2 days apart. Peak power (PP), mean power, rate of force development (RFD), and electromyography (EMG) were measured during the concentric phase of 2 consecutive DLs (75% 1RM) at 30 seconds and 2:30 minutes after the warm-up conditions. There was no significant (p > 0.05) main effect or interaction effect between the DL-WU, VbX warm-up, and Control for PP, mean power, RFD, and EMG. Vibration exercise warm-up did not exhibit an ergogenic effect to potentiate muscle activity more than the specific DL-WU and Control. Therefore, DL PO is affected to a similar extent, irrespective of the type of stimuli, when the warm-up is not focused on raising muscle temperature.

Results: The 25 patients were 53 ± 15 years old, 68% were male and average BMI was 29.23 ± 5.9 kg/m 2. In 23 of the 25 patients image quality was sufficient for RV reconstruction. Compared to MRI, RV reconstruction underestimated RVEDV by 14.6 ml (±41.2 ml), RVESV by 9.7 ml (±24.7 ml) and RVEF by 0.7% (±10.3%). Chronbach alpha ranged values were 0.82 for RVEDV 0.87 for RVESV and 0.79 for RVEF. Conclusion: We found the RV can generally be reconstructed from echocardiography to assess size and function using this software. Volumetric parameters were underestimated, with levels of variance that are higher than desirable. Chronbach alpha showed acceptable levels of agreement between four independent observers, suggesting measurements are reproducible.

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