经颅直流电刺激对人体单腿落地稳定性的影响  

Effect of transcranial direct current stimulation on human single-leg landing stability

作　　者：林秦兆 魏梦力 钟亚平 吴倩[1] 周博韬 王海锋 Lin Qinzhao;Wei Mengli;Zhong Yaping;Wu Qian;Zhou Botao;Wang Haifeng(Sports Big Data Research Center of Wuhan Sports University,Wuhan 430079,Hubei Province,China;Hubei Sports and Health Innovation and Development Research Center,Wuhan 430079,Hubei Province,China)

机构地区：[1]武汉体育学院体育大数据研究中心,湖北省武汉市430079 [2]湖北省运动与健康创新发展研究中心,湖北省武汉市430079

出　　处：《中国组织工程研究》2024年第26期4209-4215,共7页Chinese Journal of Tissue Engineering Research

基　　金：湖北省教改项目(2022395),课题名称:新时代体育院校运动训练专业学科能力模型构建与实践,项目负责人:钟亚平;国家体育总局决策咨询研究项目(2023-B-19),课题名称:全国数字体育实验室框架体系及评审标准研究,项目负责人:钟亚平;国家社科基金后期资助重点项目(22FTYA001),课题名称:数字赋能构建更高水平全民健身服务体系研究,项目负责人:钟亚平。

摘　　要：背景:经颅直流电刺激作为一种非侵入脑刺激技术可即时提高人体肌肉力量,或可即时提升人体单腿落地稳定性,但尚未有相关研究进行论证。目的:验证经颅直流电刺激对人体单腿落地稳定性的影响。方法:选择武汉体育学院男性大学生为受试者,按随机数字表法分为A组(n=6)和B组(n=5),A组受试者先接受假刺激,随后经过3 d的清洗期,再接受经颅直流电刺激;B组受试者先接受经颅直流电刺激,随后经过3 d的清洗期,再接受假刺激,刺激后即刻进行单腿落地测试,采集并分析受试者单腿落地时的生物力学参数。将经颅直流电刺激干预的数据汇总为试验组数据,假刺激干预的数据汇总为对照组数据。结果与结论:①核心稳定性:经颅直流电刺激干预与落地高度对躯干最大屈曲角具有交互效应(P<0.05),在30 cm落地高度条件下,相较于假刺激,经颅直流电刺激后受试者躯干最大屈曲角显著降低;经颅直流电刺激干预对躯干最大侧屈角、躯干侧屈角速度具有主效应(P<0.05),相较于假刺激,经颅直流电刺激后受试者躯干最大侧屈角、躯干侧屈角速度显著降低;②下肢关节稳定性:经颅直流电刺激干预对踝关节最大外翻角具有主效应(P<0.05),相较于假刺激,经颅直流电刺激后受试者踝关节最大外翻角显著降低;经颅直流电刺激干预对腓肠肌外侧头的峰值激活水平具有主效应(P<0.05),相较于假刺激,真刺激后腓肠肌外侧头的峰值激活水平显著提升;经颅直流电刺激干预与落地高度对胫骨前肌的峰值激活水平具有交互效应(P<0.05),在60 cm落地高度条件下,相较于假刺激,经颅直流电刺激后受试者胫骨前肌峰值激活水平显著升高;③压力中心稳定性:经颅直流电刺激干预与落地高度对压力中心横向平均位移距离、压力中心横向平均位移速度、压力中心纵向平均位移距离、压力中心纵向平均位移速度等指�BACKGROUND:Transcranial direct current stimulation(tDCS),as a non-invasive brain stimulation technique,can enhance human muscle strength or improve single-leg landing stability instantly,but no relevant research has demonstrated this yet.OBJECTIVE:To investigate the effect of tDCS on the stability of single-leg landings in human subjects.METHODS:Male undergraduate students from Wuhan Sports University were recruited as study participants.They were divided into two groups,A(n=6)and B(n=5),using a random number table.Group A underwent a sham stimulation session followed by a 3-day washout period,after which they received tDCS.Conversely,Group B received tDCS initially,followed by a 3-day washout period,and subsequently underwent the sham stimulation session.Following the respective stimulation sessions,an immediate single-leg landing test was administered to assess and collect biomechanical parameters.Data resulting from the tDCS intervention were aggregated and analyzed as the experimental group dataset,whereas data stemming from the sham stimulation were consolidated as the control group dataset.RESULTS AND CONCLUSION:Regarding core stability,the tDCS intervention showed a significant interaction with landing height on the maximal trunk flexion angle(P<0.05).A paired comparison of the data showed a significant decrease in the maximum trunk flexion angle following true stimulation compared to sham stimulation at a 30-cm landing height.Additionally,the tDCS intervention had a significant main effect on the maximum trunk lateral bending angle and the mean trunk lateral bending angular velocity(P<0.05).Following true stimulation,there was a significant decrease in the maximum trunk lateral bending angle and the mean trunk lateral bending angular velocity compared to sham stimulation.In terms of lower limb joint stability,the tDCS intervention had a significant main effect on the maximum dynamic ankle valgus angle(P<0.05).This resulted in a significant decrease in the angle following true stimulation compared to sham

关 键 词：经颅直流电刺激 稳定性 单腿落地 身体控制 肌肉激活 核心稳定性 下肢 

分 类 号：R459.9[医药卫生—治疗学] R319[医药卫生—临床医学] G804.66[文化科学—运动人体科学]