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Objective: the Biodex dynamic balance instrument of normal human balance function, repeat the test, and standing on one foot with eyes closed, the meter font test, improved functionality protrusive comparison, to study the test-retest reliability of the Biodex dynamic balance instrument internal consistency test interrater reliability, school subscript validity, empirical validity and test data, and to explore the impact of individual characteristics and ability to balance. Methods: Xuhui District Central Hospital doctors, therapists, nurses, interns, care workers, civil servants, and the patient's family of 60 people, average age 38.2 ± 12.2 years of age. Paired off into groups randomly tested by two tests, the test includes: Biodex the dynamic equilibrium meter test (7 SOT test eyes open, eyes closed 7 SOT test, 7 LOS test), standing on one foot with eyes closed tested meters Font Test, improved functional reach test. 3-5 days later, the same two test subjects repeated testing (cross-test), the test content and test the same order. Using SPSS17.0 for data analysis. Statistics on height, weight, age, sex, BMI, and BBS data using partial correlation analysis to draw individual characteristics and ability to balance; statistical the BBS data between different testers pearson correlation analysis derived reliability testers repeat test BBS data; pearson correlation analysis statistical test-retest reliability; pearson correlation analysis of the first BBS data, meter the font tests, eyes closed standing on one foot and improved functionality protrusive Statistical draw school subscript validity. Scale Reliability Analysis of the first BBS data statistics to draw the internal consistency of the data; using one-way ANOVA for statistical analysis of the number of different move BBS data derived empirical validity. Results: Age, BMI, visual ability to balance significant impact was no significant impact of gender on the balance ability, almost no significant height, weight balance ability. To repeat tests SI, APSI, MLSI eyes open for low related, DC, APDC, MLDC no correlation; eyes closed, SOT parametric test basic moderate correlation, LOST, highly relevant to DC for the moderate correlation. Eyes open SOT parametric test basic no correlation; eyes closed, SOT parametric test basic moderate correlation; LOST related to low DC moderate correlation. Eyes open the SOT, eyes closed SOT, LOS internal data are good internal consistency, eyes open the SI, eyes closed, poor internal consistency between the SI and DC. BBS data with eyes closed standing on one foot are basically low correlation; BBS data and improved functional reach no correlation; the eyes open SOT meters fonts test substantially lower correlation, eyes closed, SOT, LOS meters fonts no correlation. The basic move the number of subjects have significant differences, indicating better empirical validity BBS. Conclusion: age, BMI greater the balance capacity the worse, eyes open, eyes closed, balance function, height, weight and gender had no influence on balancing ability. 2.BBS better test reliability and test-retest reliability is not good, but eyes open SOT test reliability and test-retest reliability may be due to normal people too because eyes open seven SOT test simple and can not distinguish between normal human balance ability minor differences. 3. Eyes open SOT, eyes closed, the internal consistency between the SOT and LOS internal data are good, eyes SI eyes closed poor internal consistency between the SI and DC. 4.BBS standing on one leg with eyes closed low associated with basic meters fonts test low correlation with improved functionality before the field of balanced assessment because there is no \big limitations. 5.BBS with improved functional reach no correlation, predicted BBS school criterion validity needs to be improved, it is estimated that there is a good empirical validity, sensitivity is high.
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