Different from limb rehabilitation training,the purpose of muscle strength training is to reduce muscle atrophy and increase muscle strength and tolerance through strength training of limb muscles,and then improve the...Different from limb rehabilitation training,the purpose of muscle strength training is to reduce muscle atrophy and increase muscle strength and tolerance through strength training of limb muscles,and then improve the muscle strength level of muscles(groups),mainly for sports fitness and muscle strengthening groups and patients with muscle atrophy or muscle weakness caused by various diseases.In this paper,we developed a new reconfigurable muscle strength training robot,a bionic robot by imitating physicians to conduct muscle strength training for patients,which was developed with six training modes for 17 joint movements,that is,the shoulder flexion/extension,the shoulder internal/external rotation,the shoulder adduction/abduction,the elbow flexion/extension,the wrist supination/pronation,the wrist flexion/extension,the wrist radial/ulnar deviation,the hip flexion/extension,the hip internal/external rotation,the hip adduction/abduction,the knee flexion/extension,the ankle dorsiflexion/plantarflexion,the ankle adduction/abduction,the ankle inversion/eversion,the waist flexion/extension,the waist left/right rotation,and the waist left/right flexion.The reconfigurable mechanism was designed with fully electric adjuster and reconfigurable adaptors deployed on the driving unit,and six training modes were developed,namely,continuous passive motion,active exercise,passive–active exercise,isotonic exercise,isometric exercise and isokinetic exercise.Experiments with knee joint and elbow joint have shown that the developed reconfigurable muscle strength training robot can realize the multi-mode trainings for the 17 joint movements.展开更多
Our previous study suggested that the subcutaneous muscle displacement caused by joint movements might alter muscle activation patterns and thus affect the classification performance.To further analyze the effect of j...Our previous study suggested that the subcutaneous muscle displacement caused by joint movements might alter muscle activation patterns and thus affect the classification performance.To further analyze the effect of joint movements on the online performance of Electromyography(EMG)Pattern Recognition(PR),this study assessed online classification performance with and without joint movements.EMG signals were recorded from the dominant forearm of 10 able-bodied subjects under two motion scenarios:Hand and Wrist Joints Unconstrained(HAWJU)and Constrained(HAWJC).Sixth-order autoregressive coefficients and four time-domain features were extracted from EMG signals.Linear Discriminant Analysis(LDA)models were trained to perform an online performance evaluation of the limb motions.The experimental results showed that the four online performance metrics:Motion Selection Time(MST),Motion Completion Time(MCT),Motion Completion Rate(MCR),and Online Classification Accuracy(ONCA)were 0.35 s,1.44 s,97.40%,and 82.61%for HAWJU and 0.37 s,1.47 s,89.70%,and 73.57%for HAWJC,respectively.The outcomes of this study indicated that subcutaneous muscle displacement due to joint movements has a positive effect on online classification performance.The absence of joint movements may be a physiological factor contributing to the poor online performance of the EMG-PR of transradial amputees.This study can provide a new perspective for improving the online performance of EMG-PR for transradial amputees.展开更多
Aim The purpose of this study is to compare the effects of the two clutches on recording the condylar movement. Methodology Ten subjects （6 women,4 men; mean age 25.4 years） participated in the study. The mandibular...Aim The purpose of this study is to compare the effects of the two clutches on recording the condylar movement. Methodology Ten subjects （6 women,4 men; mean age 25.4 years） participated in the study. The mandibular move-ment,sagittal condylar inclination angle,and transversal condylar inclination angle of each subject were recorded with the CADIAX？ using the two clutches,respectively. The characteristics of the tracings of the protrusion,opening,and mediotrusion were analyzed with the t-test statistics at α = 0.05 level. The Kappa values were calculated for an assessment of the congruence of the tracings. Results The results showed that the contour,direction,and dimension of the tracings in the two clutches were approxi-mately same,but the tracings determined by the functional occlusal clutch were more regular and congruent. In the group segment recorded with the tray clutch,opening/ closing paths of one subject showed crossed and time curves of three subjects appeared peak-like changes of velocity,but none were statistically different （P0.05）. Conclusion The research suggests that the functional occlusal clutch should be preferred in the evaluation of the mandibular function,as the tracings with the tray clutch are more likely to produce false positive results.展开更多
目的:对我国高水平女子体操运动员高低杠项目关节损伤的功能性体能康复训练进行研究。方法:采用问卷调查、专家访谈、测试等研究方法,对11名我国高水平女子体操运动员进行为期12周的功能性训练。采用功能性动作筛查(functional movement...目的:对我国高水平女子体操运动员高低杠项目关节损伤的功能性体能康复训练进行研究。方法:采用问卷调查、专家访谈、测试等研究方法,对11名我国高水平女子体操运动员进行为期12周的功能性训练。采用功能性动作筛查(functional movement screen,FMS)测试评估运动员关节损伤的潜在风险。根据损伤现状调查与评估结果,制定功能性体能康复训练3个阶段的训练目标、任务和方案,提高肩关节灵活性和活动范围,加强肩关节肌肉组织力量,提升运动表现。结果:我国高水平女子体操运动员高低杠项目损伤率最高的部位为肩关节,占比78.18%;高水平女子体操运动员FMS测试损伤风险阈值为17分;功能性训练后肩关节测试均值由1分增加至2分,肩关节疼痛人数由3人下降至1人,总分均值由14分增加至17分。结论:功能性训练前损伤现状调查和FMS测试评估是制定功能性训练方案的依据。FMS测试分数前后具有显著差异,功能性训练能够有效提升肩关节灵活性,改善疼痛现象,促进损伤恢复。展开更多
The aim of this paper is to describe the possibilities of analyzing human mastication. The development of a standardized food model is presented. Based on the findings of a systematic literature search an elastic food...The aim of this paper is to describe the possibilities of analyzing human mastication. The development of a standardized food model is presented. Based on the findings of a systematic literature search an elastic food model was created with the aim of standardizing size and elastic properties. Three different eatable jellied products were chosen, created by a changing of the amount of gelatin (260 Blooms) related to the total mass of the standard jellied food. The different hardness were classified in soft, medium and hard, flavored identically, but stained with different colors: soft-green, medium-yellow, hard-red. A cylindrical form was chosen with a height of 1 cm and a diameter of 2 cm. A standard protocol for analyzing chewing patterns in men was created. The condylographic data off several patients are described in details to demonstrate the possible clinical implementation. The newly developed standard food model (SFM) showed the capability to serve in experimental settings to analyze human mastication, although only a few patients have been examined. In addition, strength and size of the newly developed SFM load the masticatory system in an extent;it should be possible to disclose subclinical symptoms of patients within a short time of examination. The diagnostic procedure of temporo-mandibular disorder (TMD) should be endorsed by this new method. The condylographic data created by a standardized protocol should have the ability to enhance the clinical functional analysis of patients previous to restorative dental procedures.展开更多
目的对踝关节运动在防治深静脉血栓(DVT)中的作用进行系统性评估,为临床实践提供参考依据。方法通过计算机搜索Cochrane Library、Web of Science、PubMed、CINAHL、Embase、中国知网、万方医学网、维普资讯中文期刊服务平台、中国生物...目的对踝关节运动在防治深静脉血栓(DVT)中的作用进行系统性评估,为临床实践提供参考依据。方法通过计算机搜索Cochrane Library、Web of Science、PubMed、CINAHL、Embase、中国知网、万方医学网、维普资讯中文期刊服务平台、中国生物医学文献服务系统等数据库中关于踝关节运动预防下肢DVT的原始文献,检索时限为建库至2023年7月。由2名研究人员根据纳入/排除标准独立对文献进行筛选,提取相关数据,并对文献质量进行评价,使用Stata16软件进行meta分析。结果共纳入文献14篇,包括1572名患者。踝关节运动能降低骨科患者术后DVT发生率、增加最大静脉容量及最大静脉流出量、减小大腿周径,差异均有统计学意义(风险比/均数差0.26、1.14、0.94、-2.18,95%可信区间0.16~0.42、0.60~1.67、0.43~1.44、-3.31~-1.05,P<0.001);减小小腿周径、降低术后不良事件发生率比较,差异均无统计学意义(均数差/风险比-2.27、0.76,95%可信区间-5.12~0.57、0.31~1.85,P=0.117、0.543)。结论踝关节运动可有效降低骨科患者术后DVT发生率,同时可改善患者血流动力学状况和减小大腿周径,但对减小小腿周径、降低不良反应的效果不明显。展开更多
基金supported in part by the National Key R&D Program of China(No.2018YFB1307004)in part by the National Natural Science Foundation of China(Nos.61903011 and 52175001)。
文摘Different from limb rehabilitation training,the purpose of muscle strength training is to reduce muscle atrophy and increase muscle strength and tolerance through strength training of limb muscles,and then improve the muscle strength level of muscles(groups),mainly for sports fitness and muscle strengthening groups and patients with muscle atrophy or muscle weakness caused by various diseases.In this paper,we developed a new reconfigurable muscle strength training robot,a bionic robot by imitating physicians to conduct muscle strength training for patients,which was developed with six training modes for 17 joint movements,that is,the shoulder flexion/extension,the shoulder internal/external rotation,the shoulder adduction/abduction,the elbow flexion/extension,the wrist supination/pronation,the wrist flexion/extension,the wrist radial/ulnar deviation,the hip flexion/extension,the hip internal/external rotation,the hip adduction/abduction,the knee flexion/extension,the ankle dorsiflexion/plantarflexion,the ankle adduction/abduction,the ankle inversion/eversion,the waist flexion/extension,the waist left/right rotation,and the waist left/right flexion.The reconfigurable mechanism was designed with fully electric adjuster and reconfigurable adaptors deployed on the driving unit,and six training modes were developed,namely,continuous passive motion,active exercise,passive–active exercise,isotonic exercise,isometric exercise and isokinetic exercise.Experiments with knee joint and elbow joint have shown that the developed reconfigurable muscle strength training robot can realize the multi-mode trainings for the 17 joint movements.
基金The authors thank all volunteers who participated in the study.This work was supported by National Natural Science Foundation of China(Grant No.52005364,52122501)This work was also supported by the Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education(Tianjin University).
文摘Our previous study suggested that the subcutaneous muscle displacement caused by joint movements might alter muscle activation patterns and thus affect the classification performance.To further analyze the effect of joint movements on the online performance of Electromyography(EMG)Pattern Recognition(PR),this study assessed online classification performance with and without joint movements.EMG signals were recorded from the dominant forearm of 10 able-bodied subjects under two motion scenarios:Hand and Wrist Joints Unconstrained(HAWJU)and Constrained(HAWJC).Sixth-order autoregressive coefficients and four time-domain features were extracted from EMG signals.Linear Discriminant Analysis(LDA)models were trained to perform an online performance evaluation of the limb motions.The experimental results showed that the four online performance metrics:Motion Selection Time(MST),Motion Completion Time(MCT),Motion Completion Rate(MCR),and Online Classification Accuracy(ONCA)were 0.35 s,1.44 s,97.40%,and 82.61%for HAWJU and 0.37 s,1.47 s,89.70%,and 73.57%for HAWJC,respectively.The outcomes of this study indicated that subcutaneous muscle displacement due to joint movements has a positive effect on online classification performance.The absence of joint movements may be a physiological factor contributing to the poor online performance of the EMG-PR of transradial amputees.This study can provide a new perspective for improving the online performance of EMG-PR for transradial amputees.
文摘Aim The purpose of this study is to compare the effects of the two clutches on recording the condylar movement. Methodology Ten subjects （6 women,4 men; mean age 25.4 years） participated in the study. The mandibular move-ment,sagittal condylar inclination angle,and transversal condylar inclination angle of each subject were recorded with the CADIAX？ using the two clutches,respectively. The characteristics of the tracings of the protrusion,opening,and mediotrusion were analyzed with the t-test statistics at α = 0.05 level. The Kappa values were calculated for an assessment of the congruence of the tracings. Results The results showed that the contour,direction,and dimension of the tracings in the two clutches were approxi-mately same,but the tracings determined by the functional occlusal clutch were more regular and congruent. In the group segment recorded with the tray clutch,opening/ closing paths of one subject showed crossed and time curves of three subjects appeared peak-like changes of velocity,but none were statistically different （P0.05）. Conclusion The research suggests that the functional occlusal clutch should be preferred in the evaluation of the mandibular function,as the tracings with the tray clutch are more likely to produce false positive results.
文摘目的:对我国高水平女子体操运动员高低杠项目关节损伤的功能性体能康复训练进行研究。方法:采用问卷调查、专家访谈、测试等研究方法,对11名我国高水平女子体操运动员进行为期12周的功能性训练。采用功能性动作筛查(functional movement screen,FMS)测试评估运动员关节损伤的潜在风险。根据损伤现状调查与评估结果,制定功能性体能康复训练3个阶段的训练目标、任务和方案,提高肩关节灵活性和活动范围,加强肩关节肌肉组织力量,提升运动表现。结果:我国高水平女子体操运动员高低杠项目损伤率最高的部位为肩关节,占比78.18%;高水平女子体操运动员FMS测试损伤风险阈值为17分;功能性训练后肩关节测试均值由1分增加至2分,肩关节疼痛人数由3人下降至1人,总分均值由14分增加至17分。结论:功能性训练前损伤现状调查和FMS测试评估是制定功能性训练方案的依据。FMS测试分数前后具有显著差异,功能性训练能够有效提升肩关节灵活性,改善疼痛现象,促进损伤恢复。
文摘The aim of this paper is to describe the possibilities of analyzing human mastication. The development of a standardized food model is presented. Based on the findings of a systematic literature search an elastic food model was created with the aim of standardizing size and elastic properties. Three different eatable jellied products were chosen, created by a changing of the amount of gelatin (260 Blooms) related to the total mass of the standard jellied food. The different hardness were classified in soft, medium and hard, flavored identically, but stained with different colors: soft-green, medium-yellow, hard-red. A cylindrical form was chosen with a height of 1 cm and a diameter of 2 cm. A standard protocol for analyzing chewing patterns in men was created. The condylographic data off several patients are described in details to demonstrate the possible clinical implementation. The newly developed standard food model (SFM) showed the capability to serve in experimental settings to analyze human mastication, although only a few patients have been examined. In addition, strength and size of the newly developed SFM load the masticatory system in an extent;it should be possible to disclose subclinical symptoms of patients within a short time of examination. The diagnostic procedure of temporo-mandibular disorder (TMD) should be endorsed by this new method. The condylographic data created by a standardized protocol should have the ability to enhance the clinical functional analysis of patients previous to restorative dental procedures.
文摘目的对踝关节运动在防治深静脉血栓(DVT)中的作用进行系统性评估,为临床实践提供参考依据。方法通过计算机搜索Cochrane Library、Web of Science、PubMed、CINAHL、Embase、中国知网、万方医学网、维普资讯中文期刊服务平台、中国生物医学文献服务系统等数据库中关于踝关节运动预防下肢DVT的原始文献,检索时限为建库至2023年7月。由2名研究人员根据纳入/排除标准独立对文献进行筛选,提取相关数据,并对文献质量进行评价,使用Stata16软件进行meta分析。结果共纳入文献14篇,包括1572名患者。踝关节运动能降低骨科患者术后DVT发生率、增加最大静脉容量及最大静脉流出量、减小大腿周径,差异均有统计学意义(风险比/均数差0.26、1.14、0.94、-2.18,95%可信区间0.16~0.42、0.60~1.67、0.43~1.44、-3.31~-1.05,P<0.001);减小小腿周径、降低术后不良事件发生率比较,差异均无统计学意义(均数差/风险比-2.27、0.76,95%可信区间-5.12~0.57、0.31~1.85,P=0.117、0.543)。结论踝关节运动可有效降低骨科患者术后DVT发生率,同时可改善患者血流动力学状况和减小大腿周径,但对减小小腿周径、降低不良反应的效果不明显。
