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. 2018 Sep 5;16(3):1559325818797009.
doi: 10.1177/1559325818797009. eCollection 2018 Jul-Sep.

Comparing the Acute Effects of Intermittent and Continuous Whole-Body Vibration Exposure on Neuromuscular and Functional Measures in Sarcopenia and Nonsarcopenic Elderly Women

Ryan M Miller  1 , Aaron D Heishman  1 , Eduardo D S Freitas  1 , Michael G Bemben  1
Affiliations

Comparing the Acute Effects of Intermittent and Continuous Whole-Body Vibration Exposure on Neuromuscular and Functional Measures in Sarcopenia and Nonsarcopenic Elderly Women

Ryan M Miller et al. Dose Response. .

Abstract

This investigation examined the acute effects of continuous whole-body vibration (CWBV) and intermittent whole-body vibration (IWBV) on neuromuscular and functional measures in women with sarcopenia and nonsarcopenic women. Continuous whole-body vibration was one 6-minute exposure, while IWBV consisted of six 60-second exposures to rest intervals (30 Hz, 2-4 mm amplitude). Factorial analyses revealed group × exposure × time interactions for jump height (JH; F = 10.8, P = .002), grip strength (GS; F = 15.5, P < .001), timed up and go test (F = 11.7, P = .002), and sit and reach test (S&R; F = 9.7, P = .004). Both JH and GS significantly improved post-WBV in women with sarcopenia (P < .001), with post-IWBV significantly greater (P < .001) than post-CWBV. Timed up and go test and S&R significantly improved post-IWBV in both the groups (P < .001) with post-IWBV significantly better than post-CWBV (P < .001). Bench press power at 20% one repetition maximum (1RM) revealed an exposure × time interaction (F = 4.6, P = .04) illuminating that IWBV significantly improved muscular power (P < .001). Bench press power at 40% 1RM revealed group × exposure (F = 6.4, P = .016) and exposure × time interactions (F = 5.8, P = .022). Individuals with sarcopenia significantly increased power output (P < .001) post-IWBV which was significantly greater than post-CWBV (P = .037). Bench press power at 60% 1RM revealed an exposure × time interaction (F = 8.6, P = .006), indicating that power was significantly improved post-IWBV (P = .027) and decreased post-CWBV. Berg Balance scale revealed a time main effect (F = 6.64, P = .015), and pain discomfort was significantly lower post-IWBV. These data indicate IWBV may provide a more efficacious exposure pattern in older women when compared to CWBV.

Keywords: low skeletal mass; muscle function; muscle quality; older women; whole-body vibration.

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Conflict of interest statement

Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Figures

Figure 1.
Figure 1.
Participant testing design.
Figure 2.
Figure 2.
Functional measure percent change following IWBV (solid bar) and CWBV (gray bar) for sarcopenic group. Significance as follows: α, P < .001 between vibration patterns; β, P < .001 pre- to postvibration; δ, P < .05 pre- to postvibration. BBS indicates Berg Balance Scale; CWBV, continuous whole-body vibration; IWBV, intermittent whole-body vibration; S&R, sit and reach flexibility test; TUG, timed up and go test; VJ, vertical jump.
Figure 3.
Figure 3.
Functional measure percent change following IWBV (solid bar) and CWBV (gray bar) in nonsarcopenic group. Significance as follows: δ, P < .05 pre- to postvibration. BBS indicates Berg Balance Scale; CWBV, continuous whole-body vibration; IWBV, intermittent whole-body vibration; S&R, sit and reach flexibility test; TUG, timed up and go test; VJ, vertical jump.
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