Reliability of Mechanical Trunk Responses During Known and Unknown Trunk Perturbations
| Autor: | Kenneth Jay, Markus D. Jakobsen, Emil Sundstrup, Lars L. Andersen, Mikkel Brandt, Per Aagaard |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Adult
Back Muscles/physiology Posture/physiology Intraclass correlation Movement Posture Biophysics Poison control Perturbation (astronomy) Torso/physiology Back injury Postural control Reflex Humans Medicine Abdominal Orthopedics and Sports Medicine Diagnostics Low back Simulation Abdominal Muscles Occupational health business.industry Back Muscles Back pain Exercise Test/instrumentation Rehabilitation Abdominal Muscles/physiology Biomechanical Phenomena/physiology Torso Reproducibility of Results Equipment Design Mechanics medicine.disease Trunk Biomechanical Phenomena Preload Exercise Test Movement/physiology Female Stress Mechanical business Muscle Contraction Muscle Contraction/physiology |
| Zdroj: | Jakobsen, M D, Brandt, M, Sundstrup, E, Andersen, K J, Aagaard, P & Andersen, L L 2016, ' Reliability of Mechanical Trunk Responses During Known and Unknown Trunk Perturbations ', Journal of Applied Biomechanics, vol. 32, no. 1, pp. 86–92 . https://doi.org/10.1123/jab.2015-0120 Jakobsen, M D, Brandt, M, Sundstrup, E, Jay, K, Aagaard, P & Andersen, L L 2016, ' Reliability of mechanical trunk responses during known and unknown trunk perturbations ', Journal of Applied Biomechanics, vol. 32, no. 1, pp. 86-92 . https://doi.org/10.1123/jab.2015-0120 |
| ISSN: | 1543-2688 1065-8483 |
| DOI: | 10.1123/jab.2015-0120 |
| Popis: | This study evaluates the between-day reliability of a newly developed trunk perturbation test and compares mechanical response during known and unknown conditions. Mechanical trunk responses were measured in 17 female subjects during unloading and loading perturbations of the abdomen (A: preloaded abdomen condition) and low back (B: preloaded back condition). The loading perturbation increased the preload from 5.5 kg to a 10.9 kg pull on the trunk whereas the unloading perturbation decreased the pull from 5.5 kg to 0.1 kg. A sequence of loading (known), unloading (known), and randomized loading/unloading (unknown) perturbations were performed for A and B. Between-day reliability of stopping time, trunk displacement, and velocity was quantified using intraclass correlation coefficients (ICCs). ICCs were good to excellent for all loading and unloading measures during the known (0.70–0.98) and unknown (0.64–0.94) perturbations of A and B. In general, larger trunk displacements were seen after the unknown perturbations compared with the known perturbation. The method may be used as a diagnostic tool for screening workers who are in risk of future work-related low back injuries. |
| Databáze: | OpenAIRE |
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