title: Impact of an acute bout of vibration on muscle contractile properties, creatine kinase and lactate dehydrogenase response.
abstract: The aim of this study was to assess the effects of a bout of whole body vibration (WBV) on muscle response and to determine whether this stimulus leads to muscle damage. Thirty healthy and physically active participants (mean ± SD; age: 21.8 ± 2.0 years; height: 176.7 ± 5.8 cm; body mass: 76 ± 6.8 kg and BMI: 23.1 ± 3.7 kg·m(-2)) participated in this study. Participants were randomly allocated in one of two groups, one of them performed a bout of 360 s WBV (frequency: 30 Hz; peak-to-peak displacement: 4 mm) (VIB) and the other one adopted a sham position (CON). Muscle contractile properties were analysed in the rectus femoris (RF) by using tensiomyography (TMG) 2 min before the warm-up and 2 min after intervention. Muscle damage was assessed by determining plasma creatine kinase (CK) and lactate dehydrogenase (LDH) levels at three time points; 5 min before warm-up and 1 h and 48 h after the intervention. TMG results showed a significant decrease in maximal displacement (p<0.05) and delay time (p<0.05) in VIB and in delay time (p<0.05) and relaxation time (p<0.05) in CON. Muscle damage markers showed significant group differences (p<0.05) for CK 1 h after the intervention. In addition, differences for CK 1 h after the intervention from baseline (p<0.05) were also observed in VIB. In conclusion, a 6-min bout of WBV results in an increase of muscle stiffness in RF and increased CK levels 1 h after intervention (returning to baseline within 48 h).
authors.affiliation: a Physical Education and Sport , University of Seville , Seville , Spain.
authors.forename: Moisés
authors.initials: M
authors.lastname: de Hoyo
authors.forename: Luis
authors.initials: L
authors.lastname: Carrasco
authors.forename: Marzo E
authors.initials: ME
authors.lastname: Da Silva-Grigoletto
authors.forename: Borja
authors.initials: B
authors.lastname: Sañudo
authors.forename: Javier
authors.initials: J
authors.lastname: Caballero-Villarraso
authors.forename: Eva
authors.initials: E
authors.lastname: Arriaza
authors.forename: Maria Del Carmen
authors.initials: Mdel C
authors.lastname: Escobar
mesh_terms: D000704:Analysis of Variance; D003402:Creatine Kinase / Q000378:metabolism*; D004576:Electromyography / Q000379:methods; D064368:Healthy Volunteers; D006801:Humans; D007770:L-Lactate Dehydrogenase / Q000378:metabolism*; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D018482:Muscle, Skeletal / Q000201:enzymology / Q000502:physiology; D009135:Muscular Diseases / Q000209:etiology* / Q000503:physiopathology; D014732:Vibration / Q000009:adverse effects*; D055815:Young Adult
chemical_list: D007770:L-Lactate Dehydrogenase; D003402:Creatine Kinase