In this study, the design of an automatic ROM-Exercise machine that is constructed witha planar multililnk mechamsm consisting of only revolute pairs is investigated. Namely, equations thatdetermine the minimum moving...In this study, the design of an automatic ROM-Exercise machine that is constructed witha planar multililnk mechamsm consisting of only revolute pairs is investigated. Namely, equations thatdetermine the minimum moving spaces and relative positions of link required to construct the legmechanism are formulated with consideration of transform functions. For the leg mechanism that isconstructed with a planar eleven-link mechanism, arrangements of each link and optimum linkprofiles avoided mutual interferences among moving links are determined wb consideration of therelative locations of each link in the same plane during a cycle of motion of the mechanism. Based onthe above analytical results, an automatic ROM-Exercise machine that performs within a minimum moving spaces is proposed as a prachcal example. ms study is carried out as part of the students'computcr education to the graduation thesis, in order to improve their creativity and machine designtechnology skills in coniunction with educational advantages. Significam educational results areobtained by using the design techniques mentioned above.展开更多
特异性训练原则是运动训练的基本原则之一,通过特定训练(训练量、强度、次数,工作模式),产生特定适应,进而获得最佳化的运动能力。本研究利用文献资料法对PubMed,IngentaConnect, Science Direct和Web of Science进行了筛选,查找以下关...特异性训练原则是运动训练的基本原则之一,通过特定训练(训练量、强度、次数,工作模式),产生特定适应,进而获得最佳化的运动能力。本研究利用文献资料法对PubMed,IngentaConnect, Science Direct和Web of Science进行了筛选,查找以下关键字和搜索词的组合:组合训练、干扰效应、军事人员、特异性适应。对组合训练产生适应性的生物分子机制进行了一定程度上的研究。研究发现,组合训练在分子机制上可能存在抑制,与力量和耐力训练的信号通路有关,受到急性运动、训练总负荷、训练历史的影响。尽管肌肉代谢的几个关键调节因子有可能解释耐力和力量运动之间适应性的不相容性,但现在看来多个组合而不是单一的分子或过程可能产生"干扰效应"。当前,虽然对组合训练的研究比单模式训练(耐力训练、力量或爆发力训练)的关注要少,但现有证据支持耐力训练对力量训练引起的肌肉肥大和力量存在"干扰效应"。鉴于不同运动在未经训练的现役人员的骨骼肌中诱导相似的信号传导和基因表达,目前尚不清楚的是如何通过之前的训练史来修改分子反应的特异性。另外,适应的时间过程和"表型特异性"对运动指导具有重要意义。组合训练是过于简单的,并不能代表士兵训练的真实情景。军事职业人员的需求和管理往往限制了周期性项目中不同运动模式的"最佳"时机。因此,需要在不同的时间采取不同的运动模式以避免适应性干扰。展开更多
文摘In this study, the design of an automatic ROM-Exercise machine that is constructed witha planar multililnk mechamsm consisting of only revolute pairs is investigated. Namely, equations thatdetermine the minimum moving spaces and relative positions of link required to construct the legmechanism are formulated with consideration of transform functions. For the leg mechanism that isconstructed with a planar eleven-link mechanism, arrangements of each link and optimum linkprofiles avoided mutual interferences among moving links are determined wb consideration of therelative locations of each link in the same plane during a cycle of motion of the mechanism. Based onthe above analytical results, an automatic ROM-Exercise machine that performs within a minimum moving spaces is proposed as a prachcal example. ms study is carried out as part of the students'computcr education to the graduation thesis, in order to improve their creativity and machine designtechnology skills in coniunction with educational advantages. Significam educational results areobtained by using the design techniques mentioned above.
文摘特异性训练原则是运动训练的基本原则之一,通过特定训练(训练量、强度、次数,工作模式),产生特定适应,进而获得最佳化的运动能力。本研究利用文献资料法对PubMed,IngentaConnect, Science Direct和Web of Science进行了筛选,查找以下关键字和搜索词的组合:组合训练、干扰效应、军事人员、特异性适应。对组合训练产生适应性的生物分子机制进行了一定程度上的研究。研究发现,组合训练在分子机制上可能存在抑制,与力量和耐力训练的信号通路有关,受到急性运动、训练总负荷、训练历史的影响。尽管肌肉代谢的几个关键调节因子有可能解释耐力和力量运动之间适应性的不相容性,但现在看来多个组合而不是单一的分子或过程可能产生"干扰效应"。当前,虽然对组合训练的研究比单模式训练(耐力训练、力量或爆发力训练)的关注要少,但现有证据支持耐力训练对力量训练引起的肌肉肥大和力量存在"干扰效应"。鉴于不同运动在未经训练的现役人员的骨骼肌中诱导相似的信号传导和基因表达,目前尚不清楚的是如何通过之前的训练史来修改分子反应的特异性。另外,适应的时间过程和"表型特异性"对运动指导具有重要意义。组合训练是过于简单的,并不能代表士兵训练的真实情景。军事职业人员的需求和管理往往限制了周期性项目中不同运动模式的"最佳"时机。因此,需要在不同的时间采取不同的运动模式以避免适应性干扰。
