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The Oswestry Disability Index, the Roland-Morris Disability Questionnaire, and the Quebec Back Pain Disability Scale: Translation and validation studies of the Iranian versions
, Article Spine ; Volume 31, Issue 14 , 2006 , Pages E454-E459 ; 03622436 (ISSN) ; Parnianpour, M ; Mehdian, H ; Montazeri, A ; Mobini, B ; Sharif University of Technology
2006
Abstract
STUDY DESIGN. Cross-cultural translation and psychometric testing were performed. OBJECTIVES. To cross-culturally translate the Oswestry Disability Index (ODI), Roland-Morris Disability Questionnaire (RDQ), and Quebec Back Pain Disability Scale (QDS) into Persian, and then investigate the psychometric properties of the Persian versions produced. SUMMARY OF BACKGROUND DATA. To the authors' knowledge, there is no validated instrument to measure functional status in Persian-speaking patients with low back pain (LBP) in Iran. To our knowledge, the widely used back-specific measures, the ODI, RDQ, and QDS, have not been translated and validated for Persian-speaking patients with LBP. METHODS. The...
Submaximal electromyography-driven musculoskeletal modeling of the human trunk during static tasks: Equilibrium and stability analyses
, Article Journal of Electromyography and Kinesiology ; Volume 65 , 2022 ; 10506411 (ISSN) ; Shirazi Adl, A ; Gagnon, D ; Shahvarpour, A ; Arjmand, N ; Eskandari, A. H ; Larivière, C ; Sharif University of Technology
Elsevier Ltd
2022
Abstract
Conventional electromyography-driven (EMG) musculoskeletal models are calibrated during maximum voluntary contraction (MVC) tasks, but individuals with low back pain cannot perform unbiased MVCs. To address this issue, EMG-driven models can be calibrated in submaximal tasks. However, the effects of maximal (when data points include the maximum contraction) and submaximal calibration techniques on model outputs (e.g., muscle forces, spinal loads) remain yet unknown. We calibrated a subject-specific EMG-driven model, using maximal/submaximal isometric contractions, and simulated different independent tasks. Both approaches satisfactorily predicted external moments (Pearson's correlation ∼...
Comparison of different lifting analysis tools in estimating lower spinal loads – Evaluation of NIOSH criterion
, Article Journal of Biomechanics ; Volume 112 , 2020 ; Shirazi Adl, A ; Plamondon, A ; Arjmand, N ; Sharif University of Technology
Elsevier Ltd
2020
Abstract
Excessive loads on the human spine is recognized as a risk factor for back injuries/pain. Various lifting analysis tools such as musculoskeletal models, regression equations and NIOSH (National Institute for Occupational Safety and Health) lifting equation (NLE) have been proposed to evaluate and mitigate associated risks during manual material handling activities. Present study aims to compare predicted spinal loads from 5 different lifting analysis tools as well as to critically evaluate the NIOSH recommended weight limit (RWL). Spinal loads were estimated under different symmetric/asymmetric lifting tasks in which hand-load mass at each task was set based on RWL from NLE. Estimated...