PMID- 29909230 OWN - NLM STAT- MEDLINE DCOM- 20181026 LR - 20181026 IS - 1879-2219 (Electronic) IS - 0966-6362 (Linking) VI - 64 DP - 2018 Jul TI - Postural stability and trunk muscle responses to the static and perturbed balance tasks in individuals with and without symptomatic degenerative lumbar disease. PG - 159-164 LID - S0966-6362(18)30113-9 [pii] LID - 10.1016/j.gaitpost.2018.06.021 [doi] AB - BACKGROUND: Degenerative lumbar diseases (DLDs) are characterized by motor functional deficits and postural instability. In this study, we investigated the differences in the trunk muscle responses to postural control between the presurgical DLD patients and healthy individuals while performing the static and perturbed balance tasks. METHODS: Thirty-five DLD patients (aged 61.1 +/- 8.0 years) and thirty-five asymptomatic controls (aged 62.9 +/- 3.7 years) participated in this study. All participants stood on a force plate and performed the quiet standing (QS) and in situ weight-lifting (WL) tasks. The participants' performance in the QS task was tested under the eyes-open, eyes-closed, wide-base, and narrow-base conditions. Center of pressure (CoP) movements and electromyography of the erector spinae (ES) were recorded. The Mann-Whitney U test was applied for statistical analysis. RESULTS: The DLD group showed a significantly greater CoP movements and muscle activations during the QS task. Nevertheless, smaller CoP movements were noted during the WL task in the DLD group. Under the eyes-closed and narrow-base conditions, the DLD group showed even higher muscle activations and CoP movements. SIGNIFICANCE: The DLD patients demonstrated a poor postural control ability and tended to rely on the visual feedback and wide-base standing posture. A rigid and restricted posture was also adopted during the perturbed WL task. A high level of ES activation was required to maintain their postural steadiness. This study reveals an aberrant pattern of postural control and trunk muscle activations in symptomatic DLD patients which potentially contributes to the development of beneficial rehabilitation programs. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Lin, Yun-Chung AU - Lin YC AD - School of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC. FAU - Niu, Chi-Chien AU - Niu CC AD - Bone and Joint Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan, ROC; Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Linkou, Taiwan, ROC. FAU - Nikkhoo, Mohammad AU - Nikkhoo M AD - Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. FAU - Lu, Meng-Ling AU - Lu ML AD - Bone and Joint Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan, ROC; Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Kaohsiung, Taiwan, ROC. FAU - Chen, Wen-Chien AU - Chen WC AD - Bone and Joint Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan, ROC; Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan, ROC. FAU - Fu, Chen-Ju AU - Fu CJ AD - Bone and Joint Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan, ROC; Division of Emergency and Critical Care Radiology, Chang Gung Memorial Hospital, Linkou, Taiwan, ROC. FAU - Cheng, Chih-Hsiu AU - Cheng CH AD - Bone and Joint Research Center, Chang Gung Memorial Hospital, Linkou, Taoyuan, Taiwan, ROC; School of Physical Therapy and Graduate Institute of Rehabilitation Science, College of Medicine, Chang Gung University, Taoyuan, Taiwan, ROC. Electronic address: chcheng@mail.cgu.edu.tw. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180611 PL - England TA - Gait Posture JT - Gait & posture JID - 9416830 SB - IM MH - Adult MH - Electromyography/methods MH - Feedback, Sensory/physiology MH - Female MH - Humans MH - Lumbar Vertebrae/physiopathology MH - Male MH - Middle Aged MH - Muscle Contraction/physiology MH - Muscle, Skeletal/*physiopathology MH - Postural Balance/*physiology MH - Posture/*physiology MH - Range of Motion, Articular/physiology MH - Spinal Diseases/*physiopathology MH - Torso/physiopathology MH - Visual Analog Scale MH - Young Adult OTO - NOTNLM OT - Elderly OT - Lumbar degeneration OT - Muscle activation OT - Postural control EDAT- 2018/06/18 06:00 MHDA- 2018/10/27 06:00 CRDT- 2018/06/18 06:00 PHST- 2018/03/01 00:00 [received] PHST- 2018/05/20 00:00 [revised] PHST- 2018/06/10 00:00 [accepted] PHST- 2018/06/18 06:00 [pubmed] PHST- 2018/10/27 06:00 [medline] PHST- 2018/06/18 06:00 [entrez] AID - S0966-6362(18)30113-9 [pii] AID - 10.1016/j.gaitpost.2018.06.021 [doi] PST - ppublish SO - Gait Posture. 2018 Jul;64:159-164. doi: 10.1016/j.gaitpost.2018.06.021. Epub 2018 Jun 11.