Abstract:
:Balance is a very important function that allows maintaining a stable stance needed for many daily life activities and for preventing falls. We investigated whether balance control could be improved by a placebo procedure consisting of verbal suggestion. Thirty healthy volunteers were randomized in two groups (placebo and control) and asked to perform a single-leg stance task in which they had to stand as steadily as possible on the dominant leg. The task was repeated in three sessions (T0, T1, T2). At T1 and T2 an inert treatment was applied on the leg, by informing the placebo group that it was effective in improving balance. The control group was overtly told that treatment was inert. An accelerometer applied on participants' leg allowed to measure body sways in different directions. Subjective parameters, like perception of stability, were also collected. Results showed that the placebo group had less body sways than the control group at T2, both in the three-dimensional space and in the anterior-posterior direction. Furthermore, the placebo group perceived to be more stable than the control group. This study represents the first evidence that placebo effect optimizes posture, with a potential translational impact in patients with postural and gait disturbances.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Villa-Sánchez B,Emadi Andani M,Menegaldo G,Tinazzi M,Fiorio Mdoi
10.1038/s41598-019-42888-2subject
Has Abstractpub_date
2019-04-23 00:00:00pages
6408issue
1issn
2045-2322pii
10.1038/s41598-019-42888-2journal_volume
9pub_type
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