摘要
背景:磁场线粒体调控技术在骨骼肌功能提升方面的作用已得到证实,低负荷血流限制训练通过代谢应激机制可有效诱导肌肉力量的适应性增长,目前两项技术成为骨骼肌功能提升与治疗应用与研究的热点。然而,两项技术对肌肉力量提升效果的差异以及联合应用是否会产生增效效应尚不清楚。目的:观察低频脉冲磁刺激(1.5 mT,3300 Hz)与低负荷血流限制训练对肌肉力量提升效果的差异与联合干预对下肢肌群力量的影响。方法:招募普通健康受试者56名,随机分为磁刺激组(高负荷负重半蹲训练+磁刺激)、血流限制组(低负荷血流限制负重半蹲训练)、联合组(低负荷血流限制负重半蹲训练+磁刺激)以及对照组(高负荷负重半蹲训练),试验时长共计4周,训练为每周3次,每48 h进行一次低频脉冲磁刺激(1.5 mT,3300 Hz),试验结束后观察不同组别受试者下肢干预肌群最大力量、爆发力、力量耐力相关指标的变化。结果与结论:50名受试者完成试验进入结果分析。①经过4周的干预,磁刺激组、血流限制组和联合组受试者的下肢最大力量、爆发力以及力量耐力指标均显著增长。②最大力量增长方面,血流限制效果优于磁场调控线粒体技术,低负荷血流限制还可对远端肌群力量产生增强效果,而磁场线粒体调控技术优势在于无疲劳累积的情况下提升最大力量。③爆发力增长方面,两技术提升效果一致,磁刺激对单关节发力的爆发力促进方面更具优势,而低负荷血流限制训练对多关节协同发力的爆发力提高更具优势。④力量耐力增长方面,磁刺激技术因具备线粒体功能调控作用可有效对肌肉抗疲劳能力产生更好的提升效果。结果提示:磁刺激与低负荷血流限制联合应用可对下肢最大力量、爆发力、力量耐力产生增效效应,该技术方案可为无法进行高强度抗阻训练的术后康复及运动损伤患者提供一种新型、高效的下肢肌群力量辅助增效的训练方案。
BACKGROUND:The magnetic field mitochondrial regulation technology has been proven to enhance skeletal muscle function.Low-load blood flow restriction training can effectively induce adaptive growth of muscle strength through metabolic emergency mechanisms.Currently,both technologies have become hotspots in the application and research of skeletal muscle function improvement and treatment.However,the differences in their effects on muscle strength enhancement and whether their combined application can produce a synergistic effect remain unclear.OBJECTIVE:To observe the differences in the effects of low-frequency pulsed magnetic stimulation(1.5 mT,3300 Hz)and low-load blood flow restriction training on muscle strength enhancement and the impact of their combined intervention on lower limb muscle strength.METHODS:Fifty-six healthy subjects were recruited and randomly divided into the magnetic stimulation group(high-load half squat training),the blood flow restriction group(low-load blood flow restriction+half squat training),the combined group(magnetic stimulation and low-load blood flow restriction+half squat training),and the control group(high-load half squat training).The intervention lasted for 4 weeks,with subjects in each intervention group receiving low-frequency pulsed magnetic stimulation(1.5 mT,3300 Hz)every 48 hours,three times a week.After the intervention,changes in the maximum strength,explosive power,and strength endurance of the lower limb muscles in each group were observed.RESULTS AND CONCLUSION:Fifty subjects were included in the result analysis after completing the trial.(1)After 4 weeks of intervention,all three intervention groups showed significant increases in the maximum strength,explosive power,and strength endurance of the lower limb muscles.(2)In terms of maximum strength growth,the blood flow restriction group had a better effect than the magnetic field mitochondrial regulation technology.Low-load blood flow restriction also enhanced the strength of distal muscle groups,while the magnetic field mitochondrial regulation technology had the advantage of increasing maximum strength without fatigue accumulation.(3)In terms of explosive power growth,both technologies had similar effects,but magnetic stimulation was more effective in promoting explosive power in single-joint movements,while low-load blood flow restriction training was more effective in improving explosive power in multi-joint coordinated movements.(4)In terms of strength endurance growth,magnetic stimulation technology,due to its regulation of mitochondrial function,was more effective in enhancing the anti-fatigue ability of muscles.To conclude,the combined application of magnetic stimulation and low-load blood flow restriction can produce a synergistic effect on the maximum strength,explosive power,and strength endurance of the lower limbs.This technology protocol can provide a new and efficient training method for enhancing lower limb muscle strength for patients who cannot perform high-intensity resistance training,such as those in postoperative rehabilitation or with sports injuries.
作者
李文昊
杨玺
杜欣冉
白石
厉中山
Li Wenhao;Yang Xi;Du Xinran;Bai Shi;Li Zhongshan(Department of Physical Education,Northeastern University,Shenyang 110819,Liaoning Province,China;College of Information Science and Engineering,Shenyang University of Technology,Shenyang 111003,Liaoning Province,China;Liaoning Provincial Innovation Center for Magnetic Medicine Detection and Treatment,Shenyang 110034,Liaoning Province,China;College of Sports Science,Fujian Normal University,Fuzhou 350117,Fujian Province,China)
出处
《中国组织工程研究》
北大核心
2026年第29期7555-7564,共10页
Chinese Journal of Tissue Engineering Research
基金
辽宁省科技计划联合计划(技术攻关计划项目)(2024JH2/102600124),项目负责人:厉中山
辽宁省国际合作项目(2023JH2/10700004),项目负责人:白石
国家自然科学基金项目(62471320),项目负责人:白石
兴辽人才计划项目(XLYC2203046),项目负责人:白石。
关键词
下肢肌力
血流限制训练
低频脉冲磁刺激
线粒体
TRPC
1
lower limb muscle strength
blood flow restriction training
low-frequency pulsed magnetic stimulation
mitochondria
TRPC 1
