Image Observation Study on Improving the Effectiveness of Muscle Strength Training for Sprinters.

In order to solve the problem of improving the effectiveness of muscle strength training for sprinters, this paper presents a study using image observation technology. The main content of this technology research is to determine the experimental object and method according to the image observation and muscle characteristics. Through the data processing and other processes, it is concluded that the image observation technology has a high accuracy in the observation of muscle movement patterns. The experimental results show that when the relationship number r = 0.99, the average error of prediction is 0.09, and the image observation technology has a high accuracy in the observation of muscle movement. Conclusion. It is proved that the technical research of image observation is effective and accurate for improving the training of sports muscle strength of sprinters.

Effect of rehabilitation training on cruciate ligament injury / Efeito de treinamento de reabilitação em ferimentos no ligamento cruzado / Efecto de entrenamiento de rehabilitación en heridas en el ligamento cruzado

ABSTRACT Introduction: Sports injuries in the anterior cruciate ligament of the knee are common and serious in the field of sports and rehabilitation medicine. Objective: To observe the effect of early comprehensive rehabilitation training on knee function recovery after anterior cruciate ligament reconstruction. Methods: 40 patients were randomly divided into observation group (n = 19) and control group (n = 21). The control group received routine rehabilitation training and the observation group had water exercise added to their intervention. The active knee flexion range, extension range, and Lysholm score were observed before and 3 months after rehabilitation training. Results: 3 months after training, the active knee flexion range and extension range in the observation group were better than those in the control group (p< 0.05). Lysholm score in the observation group (91.2 ± 5.6) was higher than that in the control group (78.3 ± 4.8), and the difference was statistically significant (p< 0.05). Conclusions: Early systematic rehabilitation training can reduce pain and swelling and improve the function of the knee joint after operation. Level of evidence II; Therapeutic studies - investigation of treatment results.

RESUMO Introdução: ferimentos no ligamento cruzado anterior do joelho são comuns e graves no campo do esporte e da medicina de reabilitação. Objetivo: Observar o efeito de um treino de reabilitação abrangente para recuperar a função do joelho depois de reconstrução do ligamento cruzado anterior. Métodos: 40 pacientes foram divididos aleatoriamente em um grupo observação (n=19) e um grupo controle (n=21). Ambos os grupos receberam treinamento de reabilitação de rotina, e o grupo observação recebeu também um treino com atividades físicas aquáticas. A amplitude da flexão e da extensão do joelho ativo e a pontuação na escala de Lysholm foram avaliadas antes do treinamento de reabilitação e três meses depois. Resultados: 3 meses depois do treinamento, a amplitude da flexão e da extensão do joelho ativo no grupo observação estavam melhores que no grupo controle (p<0,05). A pontuação na escala de Lysholm, para o grupo observação (91,2 ± 5,6), foi maior que para o grupo controle (78,3 ± 4,8), com diferença estatisticamente significativa (p<0,05). Conclusões: Treino sistemático de reabilitação pode reduzir dor e inchaço e melhorar a função da articulação do joelho após operação. Nível de evidência II; Estudos terapêuticos - investigação de resultados de tratamento.

RESUMEN Introducción: heridas en el ligamento cruzado anterior de la rodilla son comunes y graves en el campo del deporte y de la medicina de rehabilitación. Objetivo: Observar el efecto de un entrenamiento de rehabilitación abarcativa para recuperar la función de la rodilla después de reconstrucción del ligamento cruzado anterior. Métodos: Fueron divididos 40 pacientes, de forma aleatoria, en un grupo de observación (n=19) y un grupo control (n=21). Ambos grupos recibieron entrenamiento de rehabilitación de rutina, y el grupo observación recibió también un entrenamiento con actividades físicas acuáticas. La amplitud de la flexión y de la extensión de la rodilla activa y la puntuación en la escala de Lysholm fueron evaluadas antes del entrenamiento de rehabilitación y tres meses después. Resultados: 3 meses después del entrenamiento, la amplitud de la flexión y de la extensión de la rodilla activa en el grupo observación estaban mejores que en el grupo control (p<0,05). La puntuación en la escala de Lysholm, para el grupo observación (91,2 ± 5,6), fue mayor que para el grupo control (78,3 ± 4,8), con diferencia estadísticamente significativa (p<0,05). Conclusiones: Entrenamiento sistemático de rehabilitación puede reducir dolor e inflamación y mejorar la función de la articulación de la rodilla después de la operación. Nivel de evidencia II; Estudios terapéuticos - investigación de resultados de tratamiento.

Research on the Status of Intangible Cultural Heritage Bearers in the Human Capital Perspective.

Culture is the bloodline of the nation and the spiritual home of the people. Intangible cultural heritage (ICH) belongs to the field of culture, and the transmission of ICH is a kind of human-based cultural transmission, which is the shaping of people's morality, character, sentiment, will, ideals and beliefs, value orientation, humanistic cultivation, artistic taste, way of thinking, wisdom, and ability in the practice of production and life of various ethnic groups. Based on the status acquisition model, this study analyzed the human capital (HC), social capital (SC), and psychological capital (PC) of ICH bearers from three perspectives. In addition to the conventional socio-demographic factors such as gender, age, place of residence, and education level as control variables, status attainment was introduced as a dependent variable, and occupational identity, job satisfaction, and entrepreneurial ability were introduced as mediating variables to construct a conceptual model in the hope of exploring the multiple influencing factors of status attainment among ICH bearers. Interviews were used to gain, the feelings and knowledge of experts, scholars, and ICH bearers, to lay a solid qualitative research foundation for this study. A questionnaire survey was also conducted to obtain basic information and professional experiences of ICH bearers to provide real support for the research analysis and discussion. As per the results of this research, all the hypotheses were supported except, HC did not have any significant impact on JS. Furthermore, SC was not in a significant association with career identity. Moreover, career identity and status attainment did not have a significant relationship.

Effects of alkalinity addition with different strategies on CANON process: Start-up, performance, and microbial community.

The effects of alkalinity addition with different strategies on the start-up, performance, and microbial community of completely autotrophic nitrogen removal over nitrite (CANON) were investigated over 450 days. In phase I, the alkalinity was increased gradually from 300 to 2,000 mg/L to obtain the optimal range. In phase II, the reactor was restarted to verify the appropriate alkalinity value of 1,600 mg/L. The fact that it only took 90 days (phase I: 170 days) to complete the start-up of CANON in phase II demonstrated that an alkalinity value of 1,600 mg/L was suitable when the influent NH4 + -N concentration was 200 mg/L (alkalinity/NH4 + -N = 8:1). The slope (k = 2.00) of NH4 + -N concentration decrease in phase II during the start-up process was significantly higher than that in phase I (k = 1.50). High removal efficiencies of NH4 + -N (98%) and TN (80%) were attained in both phases. Specific anaerobic ammonium oxidation (anammox) activity tests showed that the anammox activity of the two phases reached 3.31 and 5.31 mg TN/(g VSS·h), respectively. High-throughput sequencing analysis revealed that appropriate alkalinity could promote the enrichment of Candidatus Brocadia, C. Jettenia, and C. Kuenenia (total abundance of 31.96%) while effectively inhibiting Nitrospira (abundance of less than 0.50%). PRACTITIONER POINTS: An alkalinity/NH4 + -N ratio of 8 promoted the rapid start-up and stable performance of CANON. NH4 + -N and TN removal efficiencies of 98% and 80%, respectively, were obtained. High alkalinity promoted the enrichment of Candidatus Brocadia, Candidatus Jettenia, Candidatus Kuenenia and inhibited Nitrospira.

Establishment of a serological molecular model for the early diagnosis and progression monitoring of bone metastasis in lung cancer.

BACKGROUND: The prognosis is very poor for lung cancer patients with bone metastasis. Unfortunately, a suitable method has yet to become available for the early diagnosis of bone metastasis in lung cancer patients. The present work describes an attempt to develop a novel model for the early identification of lung cancer patients with bone metastasis risk. METHODS: As the test group, 205 primary lung cancer patients were recruited, of which 127 patients had bone metastasis; the other 78 patients without bone metastasis were set as the negative control. Additionally, 106 healthy volunteers were enrolled as the normal control. Serum levels of several cytokines in the bone microenvironment (CaN, OPG, PTHrP, and IL-6) and bone turnover markers (tP1NP, ß-CTx) were detected in all samples by ECLIA or ELISA assay. Receiver operating characteristic (ROC) curves and multivariate analyses were performed to evaluate diagnostic abilities and to assess the attributable risk of bone metastasis for each of these indicators; the diagnostic model was established via logistic regression analysis. The prospective validation group consisted of 44 patients with stage IV primary lung cancer on whom a follow-up of at least 2 years was conducted, during which serum bone biochemical marker concentrations were monitored. RESULTS: The serological molecular model for the diagnosis of bone metastasis was logit (p). ROC analysis showed that when logit (p) > 0.452, the area under curve of the model was 0.939 (sensitivity: 85.8%, specificity: 89.7%). Model validation demonstrated accuracy with a high degree of consistency (specificity: 85.7%, specificity: 87.5%, Kappa: 0.770). The average predictive time for bone metastasis occurrence of the model was 9.46 months earlier than that of the bone scan diagnosis. Serum OPG, PTHrP, tP1NP, ß-CTx, and the diagnostic model logit (p) were all positively correlated with bone metastasis progression (P < 0.05). CONCLUSIONS: This diagnostic model has the potential to be a simple, non-invasive, and sensitive tool for diagnosing the occurrence and monitoring the progression of bone metastasis in patients with lung cancer.

A quantitative analysis of the potential biomarkers of non-small cell lung cancer by circulating cell-free DNA.

The study was conducted to ascertain whether the quantification of circulating cell-free DNA (cfDNA) in serum has value as a diagnostic or for monitoring the progression of non-small cell lung cancer (NSCLC). The serum/plasma cfDNA concentration was quantified by absolute qPCR of long interspersed nuclear element-1 (LINE1) in 60 NSCLC patients and 68 controls in good health. Receiver operating characteristic (ROC) curve analysis was performed to determine the diagnostic utility and cut-off levels of cfDNA, CEA, and CYFRA21-1 in NSCLC patients. Correlations between cfDNA and age, sex, tumour stage and progression-free survival (PFS) were analysed. A follow-up study was conducted on 4 NSCLC patients, and serum cfDNA, CEA, and CYFRA21-1 were quantified throughout disease progression. Serum cfDNA levels were significantly higher in NSCLC patients than those in normal controls. Elevated serum cfDNA concentration was also significantly associated with advanced tumour stage. Serum cfDNA had a ROC area under the curve comparable to that of CEA and CYFRA21-1 for the diagnosis of NSCLC, and the combined cfDNA/CEA/CYFRA21-1 indicator had the highest diagnostic efficiency. Moreover, increased serum cfDNA levels were strongly correlated with tumour progression and poor PFS. This study preliminarily confirmed that cfDNA can monitor disease progression in NSCLC patients, and the lead time was 1-7 months compared with clinical medical imaging. Serum cfDNA may be useful in monitoring NSCLC progression, suggesting that the non-invasive quantification of serum cfDNA by LINE1 qPCR is a viable option for predicting progression and disease severity when repeated invasive tissue biopsy is not possible.

Rehabilitation: Periodic somatosensory stimulation increases arterial baroreflex sensitivity in chronic heart failure patients.

BACKGROUND: One of the beneficial effects of exercise training in chronic heart failure (CHF) is an improvement in baroreflex sensitivity (BRS), a prognostic index in CHF. In our hypothesis-generating study we propose that at least part of this effect is mediated by neural afferent information, and more specifically, by exercise-induced somatosensory nerve traffic. OBJECTIVE: To compare the effects of periodic electrical somatosensory stimulation on BRS in patients with CHF with the effects of exercise training and with usual care. METHODS: We compared in stable CHF patients the effect of transcutaneous electrical nerve stimulation (TENS, N = 23, LVEF 30 ± 9%) with the effects of bicycle exercise training (EXTR, N = 20, LVEF 32 ± 7%). To mimic exercise-associated somatosensory ergoreceptor stimulation, we applied periodic (2/s, marching pace) burst TENS to both feet. TENS and EXTR sessions were held during two successive days. RESULTS: BRS, measured prior to the first intervention session and one day after the second intervention session, increased by 28% from 3.07 ± 2.06 to 4.24 ± 2.61 ms/mmHg in the TENS group, but did not change in the EXTR group (baseline: 3.37 ± 2.53 ms/mmHg; effect: 3.26 ± 2.54 ms/mmHg) (P(TENS vs EXTR) = 0.02). Heart rate and systolic blood pressure did not change in either group. CONCLUSIONS: We demonstrated that periodic somatosensory input alone is sufficient and efficient in increasing BRS in CHF patients. This concept constitutes a basis for studies towards more effective exercise training regimens in the diseased/impaired, in whom training aimed at BRS improvement should possibly focus more on the somatosensory aspect.