SELF-ADHERENT UNDERWRAP MAINTAINS RANGE OF MOTION RESTRICTION AFTER EXERCISE
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2011-04
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The use of athletic tape to decrease ankle range of motion and aid in the prevention of lateral ankle injuries is widespread and has been extensively researched. Various forms of underwrap are often used with taping to allow for better protection of the underlying skin. A lack of research exists concerning the best form of underwrap that should be used with taping to aid in the restriction of ankle range of motion. The purpose of this study is to assess the effectiveness of different underwrap conditions on reducing ankle range of motion before and after exercise. Twenty subjects were used in this study (11 male, 9 female, 20.75±1.48 yrs, 175.29±9.24 cm, 74.39±11.77 kg). Subjects were physically active with no history of lower extremity surgery or recent injury as well as no history of any serious medical condition. Four conditions were evaluated: 1) a control (no tape or underwrap), 2) tape applied directly to the skin, 3) tape applied to foam underwrap, and 4) tape applied to self-adherent underwrap. An ankle electrogoniometer was used to measure ankle range of motion in two planes, inversion to eversion and dorsiflexion to plantarflexion in degrees. Subjects came to the laboratory four separate days, one for each condition being tested. Ankle range of motion was measured initially before tape application (pre-tape) and again after tape application (post-tape). Subjects then performed a thirty-minute exercise regimen consisting of a five-minute warm-up, twenty minutes of drills involving multi-directional movements and ending with a five-minute cool down. Ankle range of motion was measured again after the exercise protocol (post-exc).
Two different repeated measures Analysis of Variance (RMANOVA) were performed to establish the differences in ankle range of motion restriction between the tape conditions, one for each direction. Tukey’s post-hoc analysis was done on all significant findings. The statistical analysis identified a significant tape condition by time interaction for the inversion-eversion range (F6,114=33.20, p=.001) and the dorsiflexion-plantarflexion range (F6,114=54.96, p=.001). Furthermore, all the post-tape measures and post-exercise measures were significantly different from the pre-tape measures. Analysis of inversion-eversion revealed a significant loosening after exercise in both the tape to foam and tape to skin conditions. However, no significant loosening occurred in the tape to self-adherent condition. Analysis of dorsiflexion-plantarflexion revealed a significant loosening after exercise in only the tape to skin condition. These findings indicate tape to self-adherent underwrap maintains its inversion-eversion range of motion restriction after exercise. Tape to self-adherent underwrap and tape to foam underwrap maintains its dorsiflexion-plantarflexion restriction after exercise.
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