Quadriceps rate of torque development and disability in individuals with anterior cruciate ligament reconstruction |
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| Institution: | 1. Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;2. Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;1. Human Movement Science Curriculum, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;2. Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;3. Department of Orthopaedics, School of Medicine, University of North Carolina at Chapel Hill, NC, United States;1. Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;2. Department of Kinesiology, University of Toledo, Toledo, OH, United States;3. Department of Family Medicine, University of Toledo, Toledo, OH, United States;4. Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States;1. Department of Physiotherapy, Faculty of Health Sciences, University of Ljubljana, Slovenia;2. Department of Orthopaedic Surgery, University Medical Centre Ljubljana, Slovenia;3. Department of Radiology, University Medical Centre Ljubljana, Slovenia |
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| Abstract: | BackgroundThe purpose of this study was to determine associations between self-reported function (International Knee Documentation Committee Index), isometric quadriceps strength and rate of torque development in individuals with a unilateral anterior cruciate ligament reconstruction.MethodsForty-one individuals 31% male, BMI mean 25 (SD 4) kg/m2, months post anterior cruciate ligament reconstruction mean 49 (SD 40)] completed the self-reported function and isometric quadriceps function testing. Rate of torque development was assessed at 0–100 ms (early), 100–200 ms (late) ms, and peak following the onset of contraction. Associations were examined between rate of torque development, strength, and self-reported function. Linear regression was used to determine the unique amount of variance explained by the combination of rate of torque development and strength.FindingsHigher rate of torque development 100–200 ms is weakly associated with higher self-reported function in individuals with a unilateral anterior cruciate ligament reconstruction (r = 0.274, p = 0.091); however, rate of torque development 100–200 ms does not predict a significant amount of variance in self-reported function after accounting for strength (ΔR2 = 0.003, P = 0.721).InterpretationQuadriceps strength has a greater influence on self-reported function compared to rate of torque development in individuals with an anterior cruciate ligament reconstruction with time from surgery. |
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