Validity and Reliability of the Satel 40 Hz Stabilometric Force Platform for Measuring Quiet Stance and Dynamic Standing Balance in Healthy Subjects

Abstract

Background: A force platform must have validity and reliability for optimal use. The objective of this study was to analyze the validity and the reliability of the Satel 40 Hz stabilometric force platform. Methods: A study of instrumental validity and reliability, involving a cross-sectional correlational and comparative analysis was performed. To determine the validity, four certified weights located on three axes were used and the ability of the stabilometric force platform to detect changes in the position of the different axes was observed. A test–retest was performed to analyze the reliability. Forty-two symptom-free volunteers participated in the study. Assessments were taken in a standing static position and in a dynamic position, with the eyes open and closed. Three measurements were taken and the intra-class correlation coefficient (ICC) was calculated. Results: The validity increased as the weight increased for all the variables measured in the stabilometric parameters (p < 0.05). The reliability was shown to be good to excellent for the two visual conditions. The positional variables obtained a higher ICC. The variable with the best ICC was the Y mean in OE (ICC 0.874 and a p < 0.001). All the values showed an increase in a dynamic situation. Conclusion: The findings support the reliability and validity of the Satel 40 Hz stabilometric force platform. The platform could be recommended to evaluate static and dynamic standing balance in healthy adult individuals. Guidelines for treatment and the level of quality of stabilometry could be obtained from its use.

Acoustic Environmental Conditions (Do Not?) Affect the Static Posturography Diagnostic Accuracy: A Test–Retest Reliability Study

“…Exclusion criteria included presence of neurological diseases, somatosensory disorders, eye diseases (e.g., corneal diseases, pupil disorders, retinal diseases, or refractive errors) or any other condition affecting the balance, afferences processing or the vestibular system (e.g., vertigo, vestibulopathy or semicircular canal dehiscence). Participants were required not to perform intense physical activity the day before and had to rest for between 7 and 8 h the previous night as recommended [ 16 ].…”

“…Sample size calculation was estimated following the directions described by Walter et al [ 20 ]. Based on the intraclass correlation coefficient (ICC) obtained in previous reliability studies [ 3 , 16 , 21 , 22 , 23 ], an ICC > 0.7 (ρ 0 ) was set as the minimal acceptable value and ICC > 0.9 (ρ 1 ) was set as the expected value. For the sample size calculation, a power of 80% and a significance level of 5% were set.…”

“…Previous studies considered standardization of intrinsic factors including the standing posture during the record [ 13 , 14 ] focusing on the position of the feet [ 14 , 15 ] and the calibration of the instrument including the sampling frequency [ 13 , 15 ] and recording time [ 3 , 14 , 16 ]. Although environmental conditions are crucial as well as obtaining reliable measurements, there is limited evidence analyzing how the environment could induce measurement bias and most of the authors focused on sight aspects (e.g., size, distance and placement of the visual target and illumination) [ 14 ].…”

The Immediate Effect of Informational Manual Therapy for Improving Quiet Standing and Bodily Pain in University Population

“…The primary outcome was static standing balance. It was assessed using the Satel 40 Hz stabilometric force platform model PF2002, software v 33.5 8C (France) [ 43 ]. All the participants underwent a force platform measurement before the intervention (T0), immediately after intervention (T1), and 7–10 days following the end of intervention (T2).…”

Designing a Multiaxial Extensometric Force Platform: A Manufacturing Experience

“…The studies on postural analysis are focused only on the use of force platforms [18][19][20][21][22][23][24][25][26][27] and are much more numerous, differently from the projects and research that show greater emphasis on the development of these platforms. The works analyzed in [5,6,[9][10][11][12][15][16][17] present descriptions that are very superficial and difficult to reproduce, in addition to all making use of load cells for commercial use, significantly increasing the cost of prototypes.…”