Effects of nanotechnology-based devices on postural control in healthy subjects

BACKGROUND: The aim of the present preliminary randomized controlled study was to ascertain whether the use of newly developed nano-technologies-based patches can influence posture control of healthy subjects. METHODS: Thirty healthy female subjects (age 39.4 years, BMI 22.74 kg/m(2)) were randomly assigned to two groups: one with active patches and a control group with sham patches. Two patches were applied with a tape: one on the subject's sternum and the other on the C7 apophysis. Body sway during quiet upright stance was recorded with a dynamometric platform. Each subject was tested under two visual conditions, eyes open and closed. We used a blocked stratified randomization procedure conducted by a third party. RESULTS: Subjects wearing the sham patches showed a significant increase of the center of pressure sway area after 4 hours when they performed the habitual moderate-intensity work activities. In the active patch group, a decrease of the sway path was evident, providing evidence of an enhanced balance control. CONCLUSIONS: Our preliminary findings on healthy subjects indicate that nanotechnological devices generating ultra-low electromagnetic fields can improve posture control.