IntroductionTo examine the effects of tap dance (TD) on dynamic plantar pressure, static postural stability, ankle range of motion (ROM), and lower extremity functional strength in patients at risk of diabetic foot (DF).Research design and methodsA randomised, single-blinded, two-arm prospective study of 40 patients at risk of DF was conducted. The intervention group (n=20) received 16 weeks of TD training (60 min/session×3 sessions/week). The control group attended four educational workshops (1 hour/session×1 session/month). Plantar pressure, represented by the primary outcomes of peak pressure (PP) and pressure-time integral (PTI) over 10 areas on each foot, was measured using the Footscan platform system. Secondary outcomes comprised static postural stability, ankle ROM and lower extremity functional strength.ResultsReductions in intervention group PP (right foot: mean differences=4.50~27.1, decrease%=25.6~72.0; left foot: mean differences=−5.90~6.33, decrease%=−22.6~53.2) and PTI at 10 areas of each foot (right foot: mean differences=1.00~12.5, decrease%=10.4~63.6; left foot: mean differences=0.590~25.3, decrease%=21.9~72.6) were observed. Substantial PP and PTI differences were noted at the second through fourth metatarsals, medial heel and lateral heel in the right foot. Substantial PP and PTI differences were detected at metatarsals 1 and 2 and metatarsal 2 in the left foot, respectively. Moderate training effects were found in plantar flexion ROM of both feet, lower extremity functional strength, and length of center-of-pressure trajectory with eyes closed and open (r=0.321–0.376, p<0.05).ConclusionsA 16-week TD training program can significantly improve ankle ROM, lower extremity functional strength, and static postural stability. To attain greater improvements in plantar pressure, a longer training period is necessary.Trial registration numberChiCTR1800014714.

In order to improve the force performance of traditional anti-buckling energy dissipation bracing with excessive non-recoverable deformation caused by strong seismic action, this paper presents a prestress-braced frame structure system with shape memory alloy (SMA) and investigates its deformation characteristics under a horizontal load. Firstly, this paper establishes a theoretical analysis model by analyzing the geometric relationship between the deformation of SMA cables and inter-story displacement based on the internal force balance equation. The model is used to solve the anti-lateral displacement stiffness of the SMA cable-supported frame structure and to derive a reasonable formula for calculating the initial prestress and cross-sectional area of SMA cables. Then, the mechanical behavior of the SMA cable-supported frame structure system under an equivalent horizontal load is simulated using ABAQUS software and compared with the calculated results of conventional tie-supported and non-dissipative-supported frame structures. The results show that the force performance of the frame structure system determined by the SMA cable design method proposed in this paper is significantly improved under the horizontal load. Furthermore, it can ensure a certain ductility requirement of the frame structure system, which verifies the effectiveness of the design method of the SMA cable frame structure system proposed in this paper.

Based on the data from 2017 Financial Household Survey, this paper presents an empirical analysis of questionnaire data from 5,390 farming households, using logit and probit binary choice models to derive the factors that significantly affect farming households' loan default. The study found that the factors significantly affected farmers' loan default behavior including internet, credit cards, phone type, smart phone, online shopping, father's education, debt, trust and attention to financial information. Other factors including mother's education, parents' political status, farm income, happiness, choice of return, risk of investment project, total household assets, total household income and total household consumption have no significant impact on farmers' loan default. Among these factors, total farm income, trust and family happiness were found to be passive factors and the remaining variables were found to be active factors. Besides, household network infrastructure including internet, credit card, phone type, smart phone and online shopping were found to have a greater impact on loan default based on marginal effects. Through the analysis of factors that affect loan default, we can better propose corresponding measures to deal with the frequent default of farmers, which is conducive to understanding farmers' loan needs and improving the quality of banks' loans.

Based on the financial data of 15 listed banks from 2011 to 2020, this paper makes an empirical analysis of the panel model, examines the indirect impact mechanism between the uncertainty index of monetary policy and the non-performing loan ratio of banks, and verifies the intermediary effect of bank risk-taking and enterprise loan cost between the uncertainty of monetary policy and the non-performing loan ratio of banks, In addition, it also tests the heterogeneity of the equity nature of listed banks in order to make a comprehensive analysis of the indirect impact channels of monetary policy uncertainty on loan default. The results show that: (1) there are some intermediary effects between loan cost and bank risk-taking on loan default when the uncertainty of monetary policy increases. ( 2)The impact of monetary policy uncertainty on the non-performing loan ratio of state-owned banks and joint-stock banks is significantly positive, and the impact coefficient on the nonperforming loan ratio of state-owned banks is greater than that of joint-stock banks.

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