Acute Effects of Resistance Training with Local Vibration

Abstract

The aim of this study was to verify the acute effects of the application of local vibration on upper limbs during resistance training on the number of maximum repetitions, metabolic and hormonal responses. 32 volunteers performed a maximum voluntary contraction test during a lat pulldown exercise. After the test, all volunteers underwent one conventional resistance training session and one resistance training session with local vibration. In both interventions, volunteers performed 4 sets with the highest possible number of repetitions of the lat pulldown exercise at 55% of maximum voluntary contraction. During the vibratory resistance training intervention, vibration was locally applied (20-Hz and 12-mm). During the conventional resistance training, volunteers performed the same procedures without vibration. Blood samples were taken at each experimental session before and 5 min after the end of each intervention. No significant differences were observed in number of maximum repetitions between the series of vibratory and conventional training. Serum testosterone, cortisol and lactate were significantly increased after 2 interventions. Vibratory resistance training induced greater increases in testosterone and lactate concentrations. No significant changes were found in creatine kinase, creatinine or urea concentration. These data indicate that local vibration increases the metabolic and anabolic response to the resistance training, without changing the training volume.

The acute effects of local muscle vibration frequency on peak torque, rate of torque development, and EMG activity

“…These findings are consistent with previous literature with regards to EMG of the knee extensors following 30 Hz WBV (Cardinale and Lim, 2003;Ritzmann et al, 2013) and following short duration LMV (Couto et al, 2013;Iodice et al, 2013;RibotCiscar et al, 2003). Increased EMG following LMV treatment indicates greater motor unit activation and firing frequency.…”

“…However, commercially available WBV platforms are cost prohibitive and provide limited portability. Local muscle vibration (LMV) applied directly to the muscle-tendon unit also influences muscle function (Bongiovanni and Hagbarth, 1990;Couto et al, 2013;Iodice et al, 2011;Mischi and Cardinale, 2009;Ribot-Ciscar et al, 2003), and may provide a cost effective and portable alternative to WBV. For example, Couto et al (2013), found that maximal voluntary contraction of the quadriceps improved after 4 weeks of 8 Hz and 26 Hz LMV.…”

“…Local muscle vibration (LMV) applied directly to the muscle-tendon unit also influences muscle function (Bongiovanni and Hagbarth, 1990;Couto et al, 2013;Iodice et al, 2011;Mischi and Cardinale, 2009;Ribot-Ciscar et al, 2003), and may provide a cost effective and portable alternative to WBV. For example, Couto et al (2013), found that maximal voluntary contraction of the quadriceps improved after 4 weeks of 8 Hz and 26 Hz LMV. However, other studies indicate that LMV causes a reduction in force output (Kouzaki et al, 2000;Mottram et al, 2006), and this could be related to the parameters of stimulation.…”

Acute effects of local vibration on the neuromuscular responses

“…This result corroborates reports according to which an acute exposure to local sinusoidal vibration has reduced exhaustion times in isometric actions (SAMUELSON; JORFEDT; AHLBORG, 1989) and repetitions of dynamic actions, accelerating the increase in lactate concentration (COUTO et al, 2013).…”

Clinical Strategies for Addressing Muscle Weakness Following Knee Injury

“…Vibration can be delivered indirectly (ie, whole body vibration platforms) or directly to a muscletendon unit. Direct muscle 57,61,68,69 and whole body 56,57,59,60,63 vibration can acutely improve muscle function and thus would be appropriate as adjunct therapies to traditional rehabilitation methods. Whole body vibration stimulates multiple receptors throughout the lower extremity, such as cutaneous receptors in the foot and mechanoreceptors in other joints, 70 which may increase afferent input to increase reflexive inhibition.…”