Kippers V, Parker A W
Department of Anatomy, University of Queensland, St. Lucia, Australia.
Phys Ther. 1987 Nov;67(11):1680-4. doi: 10.1093/ptj/67.11.1680.
The primary purpose of this study was to investigate the relationships between the vertical fingertip-floor distance (FFD) and the hip and vertebral components of trunk flexion during the toe-touch test. Measurements were taken from lateral photographs of each subject standing in the erect and maximally flexed positions. The subjects were healthy young men (n = 16) and women (n = 17). The mean FFD was 3 cm below floor level (-3 cm) with a standard deviation of 8 cm. Reliability of this measure was indicated by a test-retest correlation coefficient of .97. The FFD was a measure of both trunk (r = -.85) and hip flexion (r = -.79), but not of vertebral flexion (r = .10). At maximum trunk flexion, therefore, FFD is mainly a measure of the extensibility of the hamstring muscles that limit hip flexion when the knees remain extended. The toe-touch test was determined to be unsuitable for monitoring the effect of a treatment regimen to improve vertebral mobility because the partial correlation coefficient between vertebral flexion and FFD was -.64 (p less than .01), with the effect of hip flexion held constant. Although this correlation is significant, it means that less than half of the variation in FFD can be explained by changes in vertebral mobility. For this group of young adults, no significant correlations existed between the FFD and limb length and abdominal girth at maximum trunk flexion.
本研究的主要目的是调查在屈体试验中，指尖到地面的垂直距离（FFD）与躯干前屈时髋关节和脊柱部分之间的关系。测量数据取自每位受试者站立于直立位和最大前屈位时的侧面照片。受试者为健康的年轻男性（n = 16）和女性（n = 17）。平均FFD为低于地面水平3厘米（-3厘米），标准差为8厘米。该测量的重测相关系数为0.97，表明了此测量方法的可靠性。FFD与躯干前屈（r = -0.85）和髋关节前屈（r = -0.79）相关，但与脊柱前屈无关（r = 0.10）。因此，在躯干最大前屈时，FFD主要是测量当膝关节保持伸展时限制髋关节前屈的腘绳肌的伸展性。屈体试验被判定不适用于监测改善脊柱活动度的治疗方案的效果；因为在保持髋关节前屈影响不变的情况下，脊柱前屈与FFD之间的偏相关系数为-0.64（p小于0.01）。虽然这种相关性显著，但这意味着FFD变化中不到一半可由脊柱活动度的改变来解释。对于这组年轻成年人，在躯干最大前屈时，FFD与肢体长度和腹围之间不存在显著相关性。
