OBJECTIVE: To determine effects of Kinesio Taping (KT) on quadriceps activation and maximal voluntary isometric contraction (MVIC) in patients with quadriceps inhibition. DESIGN: Randomized, single-blinded. SETTING: Laboratory. PATIENTS: Sixteen participants (9 males, 7 females) with quadriceps inhibition, as determined by 90% or lower in central activation ratio (CAR), participated. MAIN OUTCOME MEASURES: Hoffmann reflex (H-reflex) of the vastus medialis and quadriceps CAR and MVIC were measured before taping, and participants were randomly allocated to either KT (KT application with tension) or sham (non-elastic tape application without tension) group. H-reflexes were assessed immediately and 20 min after tape was applied over the rectus femoris. All outcomes were measured again after tape was removed when participants returned the laboratory 24 to 48 h after taping. RESULTS: Two-way repeated ANOVA found no group-by-time interaction for: H-reflex (F[3,42] = 1.94, p = 0.14), CAR (F[1,14] = 0.03, p = 0.86), or MVIC (F[1,14] = 0.007, p = 0.93). None of the outcome measures differed between groups or over time (p > 0.05). CONCLUSIONS: KT applied to the rectus femoris did not change H-reflex of the vastus medialis and quadriceps CAR and MVIC in patients with quadriceps inhibition.

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