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00005768-200305001-0106400005768_2003_35_s191_hacker_reproducibility_5miscellaneous< 18_0_5_0 >Medicine & Science in Sports & Exercise©2003The American College of Sports MedicineVolume 35(5) Supplement 1May 2003p S191THE REPRODUCIBILITY OF PELVIC NEUTRAL IN AN ASYMPTOMATIC POPULATION[D-14P FREE COMMUNICATION/POSTER TRUNK STABILITY]Hacker, C W.1; Hutchinson, T L. FACSM1; Pape, M W.11Angelo State University, San Angelo, TXFinding pelvic neutral as the starting position for back stabilization exercises is common in physical therapy practice. Pelvic neutral is emphasized as the optimal position of the pelvis. While the pelvic neutral position is taught to patients, it is not known if patients can successfully reproduce the positionPURPOSETo determine if the pelvic neutral position is reproducible in an asymptomatic population.METHODSA convenience sample of 10 males and 12 females (mean=24.45±5.2yrs) with no history of back pathology or current back pain freely volunteered as subjects. Volunteers attended two sessions 48 hours apart. During each session the participants' resting pelvic position was measured in two test positions (standing, supine) using a bubble goniometer and standard single-inclinometry techniques. The participants were trained to find pelvic neutral in both test positions. Three measurements were taken three minutes apart in one testing session for standing and supine, and repeated two days later. Independent variables of interest were day (1,2) and trial (0,1,2,3) with pelvic neutral (measured in degrees) as the dependent variable and position (supine, standing) as a covariate.RESULTSA 2x3 univariate ANCOVA was conducted to determine the effect of day and trial on the reproducibility of pelvic neutral when controlling for position using SPSS 11.5 statistical software. All significance testing was performed at the .05 level. There were no significant main effects for day or trial and no significant interaction effects for day and trial. The covariate of position is the only variable that significantly influenced the dependent variable of pelvic neutral, F(1, 343)=13,520.00, p < .001, partial n2 =.950.CONCLUSIONSThe results of this study indicate that when young, asymptomatic individuals are briefly trained to perform the spine stabilizing technique of obtaining pelvic neutral, it is easily reproducible during subsequent trials, both on that day and subsequent days. Further study needs to be performed to determine the reproducibility of pelvic neutral in a population with a history of back pain.THE REPRODUCIBILITY OF PELVIC NEUTRAL IN AN ASYMPTOMATIC POPULATIONHacker, C W.; Hutchinson, T L. FACSM; Pape, M W.D-14P Free Communication/Poster Trunk Stability535