Abstract
[Purpose] The aim of this study was to investigate the duration of the effect of diffuse noxious inhibitory controls (DNIC) on the finger-floor distance of standing forward flexion with healthy persons as subjects. [Subjects] The subjects were 33 healthy persons, 15 males and 18 females, with an average age of 21.1 years. [Methods] First, the finger-floor distance of standing forward flexion was measured, then with DNIC intervention, the measurement of the finger-floor distance of standing forward flexion was performed once as before during the intervention, 2 hours post-intervention, and on the day following intervention. [Results] A significant main effect was found with regard to the finger-floor distance in one-way analysis of variance. Significant differences between the intervention value and the other values were found by multiple comparison (Tukey HSD). [Conclusion] The effect of the DNIC intervention which temporarily improved the finger-floor distance of standing forward flexion had disappeared at 2 hours post-intervention, and was similarly absent on the following day.
