title: Efficacy of the Power Balance Silicone Wristband: a single-blind, randomized, triple placebo-controlled study.
abstract: BACKGROUND
  The Power Balance Silicone Wristband (Power Balance LLC, Laguna Niguel, CA) (power balance band; PBB) consists of a silicone wristband, incorporating two holograms, which is meant to confer improvements in balance on the wearer. Despite its popularity, the PBB has become somewhat controversial, with a number of articles being published in the news media regarding its efficacy. The PBB has not been formally evaluated but remains popular, largely based on anecdotal evidence. This study subjectively and objectively measured the effects of the PBB on balance in normal participants.
  
  
  METHODS
  A prospective, single-blind, randomized, triple placebo-controlled crossover study was undertaken. Twenty participants underwent measurement using the modified Test of Sensory Interaction on Balance (mCTSIB) and gave subjective feedback (visual analogue scale [VAS]) for each of four band conditions: no band, a silicone band, a deactivated PBB, and the PBB. Participants acted as their own controls.
  
  
  RESULTS
  The mean of the four mCTSIB conditions (eyes open and closed on both firm and compliant surfaces) was calculated. This mean value and condition 4 of the mCTSIB were compared between band conditions using path length (PL) and root mean square (RMS) as outcome measures. No significant differences were found between band conditions for PL (p  =  .91 and p  =  .94, respectively) and RMS (p  =  .85 and p  =  .96, respectively). VASs also showed no difference between bands (p  =  .25).
  
  
  CONCLUSIONS
  The PBB appears to have no effect on mCTSIB or VAS measurements of balance.
authors: Department of Otolaryngology, Head and Neck Surgery, University Health Network, University of Toronto, ON, Canada. mail@davepothier.com
authors: David D
authors: DD
authors: Pothier
authors: Gundula
authors: G
authors: Thiel
authors: S G
authors: SG
authors: Khoo
authors: Wanda A
authors: WA
authors: Dillon
authors: Shaleen
authors: S
authors: Sulway
authors: John A
authors: JA
authors: Rutka
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D018592:Cross-Over Studies; D005260:Female; D006696:Holography / Q000295:instrumentation*; D006801:Humans; D008297:Male; D010919:Placebos; D004856:Postural Balance / Q000502:physiology*; D011446:Prospective Studies; D012828:Silicones; D016037:Single-Blind Method; D014953:Wrist
chemical_list: D010919:Placebos; D012828:Silicones