The purpose of this study was to document normal ranges of spinal mobility with advancing age in women. One hundred female volunteers between the ages of 20 and 80 were tested for each of six spinal motions: forward flexion, extension, right and left lateral flexion, and right and left rotation. A new polyform tool was developed and utilized to test rotation. A general decline in spinal range of motion was found with advancing age for all motions. Statistically significant differences were found for rotation and lateral flexion; however, not for anterior flexion and extension. The greatest differences occurred between the 20-39 year old categories and the 50 and over age groups.
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