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• W4229040345 abstract "Older adults often exhibit impaired lower extremity physical function, which promotes a sedentary lifestyle and contributes to the development of adverse health outcomes. Studies have identified several factors that contribute to lower extremity physical function in older adults, including body mass index (BMI), self-reported pain severity, and number of painful sites. An understudied area that may improve our understanding of these impairments is movement-evoked pain (MEP). Therefore, the purpose of this study was to determine if movement-evoked pain was associated with lower extremity physical function in older adults. Older adults (n=67) completed several lower extremity physical function tasks, including a balance, gait, and chair stand assessment, and isokinetic knee flexion and extension strength testing. MEP ratings following these tasks were obtained using a visual analog scale (0-100). Pain scores from the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) were used to quantify pain severity and participants self-reported number of painful sites. Hierarchical linear regressions were run using three blocks of independent variables (Block 1 = BMI, Block 2 = WOMAC pain scores and number of painful sites, Block 3 = Movement-evoked pain) to assess contributions from each factor for each lower extremity physical function task. MEP improved the amount of variance explained in gait double support time (ΔR2 = 0.052, p = 0.023). Pain severity and number of painful sites significantly improved the amount of variance explained in stride length (ΔR2 = 0.104, p = 0.020) and repeated chair stand performance (ΔR2 = 0.205, p < 0.001). MEP accounts for a significant amount of variance in gait performance in older adults beyond the known contributions of BMI, pain severity, and number of painful sites. As such, MEP should be considered in the development of future physical function pain assessments and treatments. Grant support from NIA grants K01AG048259, R01AG059809, R01AG067757, the University of Florida Claude D. Pepper Center (P30AG028740), and the University of Florida McKnight Brain Research Foundation and Center for Cognitive Aging and Memory. Older adults often exhibit impaired lower extremity physical function, which promotes a sedentary lifestyle and contributes to the development of adverse health outcomes. Studies have identified several factors that contribute to lower extremity physical function in older adults, including body mass index (BMI), self-reported pain severity, and number of painful sites. An understudied area that may improve our understanding of these impairments is movement-evoked pain (MEP). Therefore, the purpose of this study was to determine if movement-evoked pain was associated with lower extremity physical function in older adults. Older adults (n=67) completed several lower extremity physical function tasks, including a balance, gait, and chair stand assessment, and isokinetic knee flexion and extension strength testing. MEP ratings following these tasks were obtained using a visual analog scale (0-100). Pain scores from the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) were used to quantify pain severity and participants self-reported number of painful sites. Hierarchical linear regressions were run using three blocks of independent variables (Block 1 = BMI, Block 2 = WOMAC pain scores and number of painful sites, Block 3 = Movement-evoked pain) to assess contributions from each factor for each lower extremity physical function task. MEP improved the amount of variance explained in gait double support time (ΔR2 = 0.052, p = 0.023). Pain severity and number of painful sites significantly improved the amount of variance explained in stride length (ΔR2 = 0.104, p = 0.020) and repeated chair stand performance (ΔR2 = 0.205, p < 0.001). MEP accounts for a significant amount of variance in gait performance in older adults beyond the known contributions of BMI, pain severity, and number of painful sites. As such, MEP should be considered in the development of future physical function pain assessments and treatments. Grant support from NIA grants K01AG048259, R01AG059809, R01AG067757, the University of Florida Claude D. Pepper Center (P30AG028740), and the University of Florida McKnight Brain Research Foundation and Center for Cognitive Aging and Memory." @default.
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• W4229040345 date "2022-05-01" @default.
• W4229040345 modified "2023-09-28" @default.
• W4229040345 title "The Influence of Movement-Evoked Pain on Lower Extremity Physical Function in Older Adults" @default.
• W4229040345 doi "https://doi.org/10.1016/j.jpain.2022.03.179" @default.
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