Repeatability of skin displacement and pressure during "inhibitory" vastus lateralis muscle taping

The use of taping to modify pain and muscle activity has become common practice among musculoskeletal physiotherapists. The aim of this study was to evaluate the repeatability of two variables, skin displacement and pressure, produced by a standardized taping procedure designed to inhibit the vastus lateralis (VL) muscle in patellofemoral pain. Measurements were recorded in 10 healthy volunteers. The effects of the taping procedure were assessed on the two lower limbs of each individual, and on measurements taken on the same limb in five subjects on two different days. On two-way analysis of variance no significant variable or interaction effect (P<0.05) was found. The coefficient (limit) of repeatability demonstrated that 95% of the differences measured for skin displacement and pressure were less than 6% and 94% of their respective means. The absolute pressures found were without exception very small and not repeatable. The results demonstrated that the VL "inhibitory" taping procedure used produced a reproducible effect for skin displacement. The validity of this taping technique is discussed.