Random Whole Body Vibration over 5 Weeks Leads to Effects Similar to Placebo: A Controlled Study in Parkinson’s Disease
Table 2
Statistical differences between pretest and posttest (FRT = Functional Reach Test, CoP = Center of Pressure, TUG = Timed up and go test, and UPDRS = Unified Parkinson’s Disease Rating Scale).
Experimental group
Placebo group
Interaction “timegroup”
Pretest
Posttest
Pretest
Posttest
Mean (SD)
95% CI
Mean (SD)
95% CI
Mean (SD)
95% CI
Mean (SD)
95% CI
FRT
Reach distance (m)
0.89 (7.4)
0.83–0.95
0.92 (8.4)
0.85–0.99
0.91 (3.9)
0.88–0.94
0.89 (3.9)
0.86–0.93
P = 0.004
CoP (%) standing still
55.1 (5.8)
50.3–60.0
55.8 (4.1)
52.4–59.2
58.5 (8.8)
51.7–65.3
57.5 (9.2)
50.5–64.6
P = 0.538
CoP (%) reaching forward
103.9 (7.3)
97.7–110.0
106.6 (4.1)
103.1–110.0
107.8 (5.5)
103.5–112.1
107.8 (6.3)
103.0–112.7
P = 0.360
Step-walk-turn task
Resulting ground reaction force (N/kg) in stepping down
17.2 (3.2)
14.6–19.9
19.2 (7.1)
13.3–25.0
19.3 (6.1)
14.6–24.0
21.3 (6.2)
16.6–26.1
P = 0.976
Resulting velocity of the trunk in stepping down (m/s)