Table 2.
Results of t-tests for each exercising condition.
| Verum SS-WBV 8.5 Hz (n = 28) | Sham SS-WBV 6 Hz (n = 27) | Intergroup Analysis for E | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| BL | E | BL | E | |||||||
| Mean ± SD | Mean ± SD | t | p | Mean ± SD | Mean ± SD | t | p | t | p | |
| Musculoskeletal Well-being | 75.64 ± 31.84 | 88.50 ± 11.54 | −2.26 | .032 | 80.41 ± 18.20 | 76.81 ± 26.15 | .93 | .359 | 2.13 | .040 |
| Muscle Relaxation | 73.39 ± 30.62 | 85.82 ± 13.53 | −2.21 | .036 | 72.56 ± 19.01 | 76.96 ± 4.85 | −1.16 | .258 | 1.63 | .109 |
| Balance-Test (dominant leg) | 74.81 ± 10.39 | 82.28 ± 11.76 | −5.52 | <.001 | 72.41 ± 7.28 | 76.90 ± 6.70 | −6.01 | <.001 | 2.08 | .043 |
| Balance-Test (non-dominant leg) | 73.45 ± 7.03 | 80.05 ± 10.47 | −4.52 | <.001 | 72.82 ± 5.98 | 77.79 ± 7.57 | −5.36 | <.001 | .92 | .364 |
| Sense of Balance | 47.50 ± 6.12 | 54.71 ± 10.31 | −3.82 | .001 | 48.96 ± 6.50 | 56.78 ± 10.28 | −4.69 | <.001 | −.74 | .461 |
| Surefootedness | 48.86 ± 4.20 | 53.61 ± 9.96 | −2.66 | .013 | 51.22 ± 7.07 | 52.89 ± 8.43 | −.80 | .429 | .29 | .774 |
| Flexibility-Test | 3.77 ± 9.69 | 6.21 ± 8.61 | −5.63 | <.001 | 6.25 ± 11.03 | 7.82 ± 11.03 | −6.51 | <.001 | −.60 | .548 |
| Sense of Flexibility | 44.04 ± 8.47 | 57.11 ± 12.22 | −4.55 | <.001 | 48.48 ± 11.85 | 56.74 ± 13.40 | −3.89 | .001 | .11 | .916 |
| Cognitive Interference (RT control) | 145.96 ± 136.77 | 86.97 ± 101.34 | 2.14 | .042 | 49.24 ± 439.90 | 137.36 ± 162.07 | −.98 | .335 | −1.38 | .171 |
Left: Verum sinusoidal side-alternating whole-body vibration (SS-WBV, 8.5 Hz) at Baseline (BL) and exercising condition (E); Middle: Sham WBV (6 Hz) at BL and E; Right: Intergroup Analysis for the exercising condition (verum SS-WBV E vs. sham SS-WBV E); Variables: Musculoskeletal well-being and muscle relaxation were assessed on a 100-point-rating-scale from 0 “not at all comfortable” to 100 “as comfortable as you can imagine”; Balance was measured with the modified Star Excursion Balance Test (mSEBT); Sense of Balance and Surefootedness were answered from 0 “a lot worse than usual” to 100 “much better than usual” and with 50 being “same as always”; Flexibility was assessed with the modified Fingertip to Floor Test (mFTF); Sense of Flexibility was answered from 0 “not at all flexible” to 100 “as flexible as I can imagine”; Cognitive Interference was calculated as the difference between reaction time (in milliseconds; ms) in incongruent trials minus the reaction time (ms) in control trials. Higher interference stands for lower inhibitory control; p-values are two-tailed with an α-level set at 5%.