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               · 34  ·                           南 京    医 科 大 学 学         报                        2025年1月


              腓肠肌共激活程度较健康老年人进一步增高。值                                  dopa⁃unresponsive freezing of gait[J]. J Parkinsons Dis,
              得注意的是,本研究发现FOG患者的这种代偿作用                                2022,12:2507-2518
              较 nFOG 明显降低,但是相关分析结果提示这种代                         [3] CHEUNG V C K,SEKI K. Approaches to revealing the neu⁃
              偿机制仍然存在,即 FOG 患者的步态变异性增高                               ral basis of muscle synergies:a review and a critique[J].
                                                                     J Neurophysiol,2021,125(5):1580-1597
             (稳定性降低)可以通过增强胫骨前肌⁃腓肠肌共同
                                                                [4] BREU M S,SCHNEIDER M,KLEMT J,et al. People with
              收缩以维持步态稳定。
                                                                     Parkinson’s disease and freezing of gait show abnormal
                  本研究存在一定的局限性。首先,本研究样本
                                                                     low frequency activity of antagonistic leg muscles[J].
              量较小且 PD 患者是在药物“开”期进行的步态和
                                                                     Front Hum Neurosci,2021,15:733067
              sEMG 检测,未来应该增大样本量探索不同状态下
                                                                [5] GUNTHER M,BARTSCH R P,MIRON⁃SHAHAR Y,et
              FOG患者的sEMG改变。但是本研究中FOG均为左                              al. Coupling between leg muscle activation and EEG dur⁃
              旋多巴抵抗型,一定程度上减少了药物的影响。同                                 ing normal walking,intentional stops,and freezing of gait
              时,数据分析将 LEDD 纳入协变量以进一步降低药                              in Parkinson’s disease[J]. Front Physiol,2019,10:870
              物的影响。此外,尽管本研究在同一任务状态下采                            [6] WANG X Y,KANG W Y,YANG Q,et al. Using gastroc⁃
              集步态时空学参数和sEMG数据,且2次检查间隔时                               nemius sEMG and plasma alpha⁃synuclein for the predic⁃
              间不超过 10 min,但是步态参数和 sEMG 并不是同                          tion of freezing of gait in Parkinson’s disease patients[J].
              步采集的,这可能会干扰相关性分析的结果。未来                                 PLoS One,2014,9(2):e89353
              同步采集有助于更好地探索sEMG和步态特征之间                           [7] BELLO O,MARQUEZ G,FERNANDEZ⁃DEL⁃OLMO M.
              的相关性。                                                  Effect of treadmill walking on leg muscle activation in
                                                                     Parkinson’s disease[J]. Rejuvenation Res,2019,22(1):
                  综上,本研究发现FOG患者的胫骨前肌和腓肠
                                                                     71-78
              肌在摆动前期 sEMG 活动明显降低,尤其腓肠肌
                                                                [8] LEE H J,CHANG W H,CHOI B O,et al. Age⁃related dif⁃
              sEMG 降低与 FOG 严重程度相关,这可能是 FOG 的
                                                                     ferences in muscle co ⁃ activation during locomotion and
              一个关键特征。此外,在 PD 中 FOG 患者在摆动相
                                                                     their relationship with gait speed:a pilot study[J]. BMC
              的胫骨前肌⁃腓肠肌共激活程度下降。                                      Geriatr,2017,17(1):44
                  利益冲突声明:                                       [9] RUONALA V,PEKKONEN E,AIRAKSINEN O,et al. Le⁃
                  所有作者声明无利益冲突。
                                                                     vodopa⁃induced changes in electromyographic patterns in
                  Conflict of Interests:
                                                                     patients with advanced Parkinson’s disease[J]. Front
                  The authors have no conflicts of interest to declare.  Neurol,2018,9:35
                  作者贡献:
                                                                [10]HUG F,AVRILLON S,IBANEZ J,et al. Common synaptic
                  朱晓磊:研究计划与实施;计敏:研究实施与数据统计;
                                                                     input,synergies and size principle:Control of spinal mo⁃
              史东艳:研究实施;孙慧敏:研究实施;王丽娜:研究计划、实                           tor neurons for movement generation[J]. J Physiol,2023,
              施与写作;张克忠:研究计划、资金支持以及对工作的各个方
                                                                     601(1):11-20
              面负责。
                                                                [11]ZSCHORLICH V R,BEHRENDT F,DE LUSSANET M H
                  Author’s Contributions:
                                                                     E. Multimodal sensorimotor integration of visual and kin⁃
                  ZHU Xiaolei was responsible for research planning and
                                                                     aesthetic afferents modulates motor circuits in humans[J].
              implementation;JI Min contributed to research implementation
                                                                     Brain Sci,2021,11(2):187
              and data analysis;SHI Dongyan and SUN Huimin were involved
                                                                [12]GEORGIADES M J,SHINE J M,GILAT M,et al. Hitting
              in research implementation;WANG Lina handled research
                                                                     the brakes:pathological subthalamic nucleus activity in
              planning,implementation,and writing;ZHANG Kezhong was
                                                                     Parkinson’s disease gait freezing[J]. Brain,2019,142
              in charge of research planning,financial support,and overall
                                                                    (12):3906-3916
              responsibility for the work.
                                                                [13]SOLOMON J P,KRAEUTNER S N,BARDOUILLE T,et
             [参考文献]                                                  al. Probing the temporal dynamics of movement inhibition
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             [2] WANG L,JI M,SUN H,et al. Reduced short⁃latency af⁃  atric disorders[J]. Front Neurosci,2022,16:1045715
                   ferent inhibition in Parkinson’s disease patients with L⁃                     (下转第55页)
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