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Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0b013e3181b865d2
Original Research

Acute and Cumulative Effects of Different Times of Recovery From Whole Body Vibration Exposure on Muscle Performance

Da Silva-Grigoletto, Marzo E1; Vaamonde, Diana M2; Castillo, Eduardo2; Poblador, Maria S2; García-Manso, Juan M3; Lancho, Jose L2

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Da Silva-Grigoletto, ME, Vaamonde, DM, Castillo, E, Poblador, MS, García-Manso, JM, and Lancho, JL. Acute and cumulative effects of different times of recovery from whole body vibration exposure on muscle performance. J Strength Cond Res 23(7): 2073-2082, 2009-This experiment was designed to assess the acute (Study I) and cumulative response (Study II) of muscle performance to differing recovery times after exposure to whole body vibration (WBV). All subjects (mean age 19.7 ± 1.9) were healthy and physically active. In both studies, subjects were exposed to a WBV bout of 6 exposures of 60 seconds each, with frequency of 30 Hz and amplitude of 4 mm. In Study I, subjects (n = 30) underwent 3 trials (1 per day) on different days with a 2-day wash-out period between trials; each trial included either a 1, 2, or 3 minutes of recovery between exposures to WBV. All subjects underwent all trials, which were randomly assigned. Jump ability and muscle power were measured before and after each bout. In Study II, subjects (n = 45) underwent 12 sessions of WBV training in 4 weeks (3 bouts/wk). The subjects were randomly assigned to 1 of the following 3 groups: WBV with 1-minute recovery periods between exposures, WBV with 2-minute recovery periods between exposures, or control group. Jump ability, muscle power, and strength were measured before and after each bout. In the acute study (I), recovery times of 1 and 2 minutes enhanced all measured parameters (p < 0.05), with the 2-minute recovery being more effective. In the long-term study (II), however, although both periods also enhanced the measured parameters (p < 0.05), the 1-minute recovery proved more effective because the response was modified by systematic stimulation. In conclusion, 2-minute recovery periods provided the most effective acute enhancement of muscle activation, whereas the 1-minute recovery provided a more effective cumulative enhancement of muscle power and jump ability.

© 2009 National Strength and Conditioning Association



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