Minimalistic

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  • 文章类型: Journal Article
    在不同类型的鞋类中定期行走可能会增加中侧剪切力,膝盖内收力矩,或垂直地面反作用力可能增加早期发展的风险膝骨关节炎(OA)。
    比较在3种鞋类条件下可能影响膝盖OA发展的运动学和动力学参数。
    对照实验室研究。
    共有40名无症状的参与者在实验室中以自己选择的赤脚(BF)行走速度进行了行走试验,简约(MF),和中性(NF)鞋类条件。使用离散点值描述膝关节参数,和连续曲线使用统计参数映射进行评估。使用3×1重复测量方差分析来确定鞋类对离散和连续数据的主要影响。要比较鞋类条件之间的差异,使用事后配对t检验。
    离散点分析显示,在重量吸收阶段,与MF和BF相比,NF的膝功率显著更大(两者P<.001)。统计参数映射分析表明,与NF和MF相比,BF在推进阶段结束时的矢状面中的膝角明显更大(P=.043)。与NF和MF相比,BF的矢状面(P=.038)和额平面(P=.035)的推进阶段以及在矢状面(P=.034)的吸收阶段的膝关节力矩明显更大。鞋类对前后路(推进,MF,NF,BF[P=.008];吸收,^BF,MF,SBNF[P=.001]),中外侧(推进,MF,NF,BF[P=.005];吸收,NF,MF,BF[P=.044]),和垂直(推进,NF,BF,MF[P=.001];吸收,MF,BF,¥NF[P<.001])地面反作用力。膝盖力量显示出鞋类的显着主要影响(吸收,NF,MF,BF[P=.015];推进,MF,NF,SB[P=.039])。
    在没有足够调节的情况下在MF中行走会影响动力学和运动学参数,并可能增加膝关节OA早期发展的风险。
    UNASSIGNED: Regular walking in different types of footwear may increase the mediolateral shear force, knee adduction moment, or vertical ground-reaction forces that could increase the risk of early development of knee osteoarthritis (OA).
    UNASSIGNED: To compare kinematic and kinetic parameters that could affect the development of knee OA in 3 footwear conditions.
    UNASSIGNED: Controlled laboratory study.
    UNASSIGNED: A total of 40 asymptomatic participants performed walking trials in the laboratory at self-selected walking speeds under barefoot (BF), minimalistic (MF), and neutral (NF) footwear conditions. Knee joint parameters were described using discrete point values, and continuous curves were evaluated using statistical parametric mapping. A 3 × 1 repeated-measures analysis of variance was used to determine the main effect of footwear for both discrete and continuous data. To compare differences between footwear conditions, a post hoc paired t test was used.
    UNASSIGNED: Discrete point analyses showed a significantly greater knee power in NF compared with MF and BF in the weight absorption phase (P < .001 for both). Statistical parametric mapping analysis indicated a significantly greater knee angle in the sagittal plane at the end of the propulsive phase in BF compared with NF and MF (P = .043). Knee joint moment was significantly greater in the propulsive phase for the sagittal (P = .038) and frontal planes (P = .035) in BF compared with NF and MF and in the absorption phase in the sagittal plane (P = .034) in BF compared with MF and NF. A significant main effect of footwear was found for anteroposterior (propulsion, ↑MF, NF, ↓BF [P = .008]; absorption, ↑BF, MF, ↓NF [P = .001]), mediolateral (propulsion, ↑MF, NF, ↓BF [P = .005]; absorption, ↑NF, MF, ↓BF [P = .044]), and vertical (propulsion, ↑NF, BF, ↓MF [P = .001]; absorption, ↑MF, BF, ↓NF [P < .001]) ground-reaction forces. Knee power showed a significant main effect of footwear (absorption, ↑NF, MF, ↓BF [P = .015]; propulsion, ↑MF, NF, ↓BF [P = .039]).
    UNASSIGNED: Walking in MF without sufficient accommodation affected kinetic and kinematic parameters and could increase the risk of early development of knee OA.
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  • 文章类型: Randomized Controlled Trial
    背景与目的:狭窄的牙槽嵴是牙列最佳康复的障碍。有几种复杂且侵入性的技术来应对山脊增加的困境,他们中的大多数表现出很低的可行性。因此,这项随机临床试验旨在评估极简岭增强(MRA)技术的有效性,与低水平激光治疗(LLLT)。材料与方法:选取20例患者(n=20),其中10个分配到测试组(MRALLLT),另外10个分配到对照组(MRA)。将大约10毫米的垂直切口放置在缺损的近旁,并在缺损的整个宽度上形成骨膜下袋。在测试现场,使用二极管激光器(AnARCFoxTM外科激光器810nm)递送LLLT(参数:100mW,在连续波模式下,每点60s的最大能量分布为6J/cm2),其次是移植物(G-移植物,SurgiwearTM,Shahjahanpur,印度)用骨移植载体沉积。对照位点没有用激光照射。结果:在两组中观察到>2mm的水平脊宽度增加。试验组和对照组的骨密度变化分别为-136±236.08HU和-44.30±180.89HU,分别。此外,试验组和对照组在这些参数方面没有统计学上的显著差异.结论:研究结果表明,MRA技术用于牙槽隆突相对简单可行。LLLT在该过程中的作用需要进一步阐明。
    Background and Objective: A narrow alveolar ridge is an obstacle to optimal rehabilitation of the dentition. There are several complex and invasive techniques to counter the ridge augmentation dilemma, with most of them exhibiting low feasibility. Hence, this randomized clinical trial aims to evaluate the effectiveness of a Minimalistic Ridge Augmentation (MRA) technique, in conjunction with low-level laser therapy (LLLT). Materials and Methods: A total of 20 patients (n = 20) were selected, with 10 assigned to the test group (MRA+LLLT) and the other 10 to the control group (MRA). A vertical incision of approximately 10 mm was placed mesial to the defect and tunneled to create a subperiosteal pouch across the entire width of the defect. At the test sites, a diode laser (AnARC FoxTM Surgical Laser 810 nm) was used to deliver LLLT (parameters: 100 mW, with a maximum energy distribution of 6 J/cm2 in the continuous wave mode for 60 s per point) to the exposed bone surface inside the pouch, followed by graft (G-Graft, SurgiwearTM, Shahjahanpur, India) deposition with a bone graft carrier. The control sites were not irradiated with a laser. Results: A horizontal ridge width gain of >2 mm was observed in both groups. The changes in bone density for the test and control groups were -136 ± 236.08 HU and -44.30 ± 180.89 HU, respectively. Furthermore, there was no statistically significant difference between the test and control groups in these parameters. Conclusion: The study findings reveal that the MRA technique is relatively simple and feasible for alveolar ridge augmentation. The role of LLLT in the process requires further elucidation.
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  • 文章类型: Journal Article
    病毒是通过复杂生物分子的分子自组装自发形成的天然超分子纳米结构。肽自组装是一种多功能工具,可以通过功能设计创建简化版本来模拟病毒,具有模块性的超分子材料,可调谐性,以及对化学和物理刺激的反应。肽材料的设计和制造中的主要挑战与肽序列及其所得超分子形态之间的精确控制有关。我们提供了用于开发可以作为病毒模拟物的球形和纤维状肽组装体的现有序列模式的概述。提供了应对病毒感染挑战的机会。
    Viruses are natural supramolecular nanostructures that form spontaneously by molecular self-assembly of complex biomolecules. Peptide self-assembly is a versatile tool that allows mimicking viruses by creating their simplified versions through the design of functional, supramolecular materials with modularity, tunability, and responsiveness to chemical and physical stimuli. The main challenge in the design and fabrication of peptide materials is related to the precise control between the peptide sequence and its resulting supramolecular morphology. We provide an overview of existing sequence patterns employed for the development of spherical and fibrillar peptide assemblies that can act as viral mimetics, offering the opportunity to tackle the challenges of viral infections.
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