Aim To determine the effect of the load on the meniscus in relation to a different angle, and to present the impact of force on eventual injury of menisci. Methods Research included 200 males with average height of 178.5 cm, mass 83.5 kg, and average age of 22 years. The simulation of treadmill that was used in the evaluation of ischemic heart disease was made. Effects on the knee were evaluated by measuring at different inclinations (5°70', 6°80', 7°90', 9°10', 10°20', 11°30' and 12°40'). Results With increasing ascent of treadmill the load on the meniscus also increased. Each increase in ascent after 22% (which corresponded to the angle of 12°40' and seventh degree of load according to the Bruce protocol) at given anthropological values was an etiological factor for meniscus injury. Conclusion The seventh degree of load according to the Bruce protocol can lead to the meniscus injury.

Aim There are more and more herbal preparations that are used for the purpose of treatment and improvement of the clinical manifestation of vaginitis not only by patients themselves, but also by healthcare professionals. Plant species, St. John's wort, chamomile, calendula, yarrow, shepherd's purse and tea tree oil are all well known for their anti-inflammatory, antimicrobial and wound healing activity. This paper presents the results of a clinical study in which three herbal formulations/vagitories, based on extracts of St. John's wort, chamomile, calendula, yarrow, shepherd's purse and tea tree oil, were investigated for their effectiveness on vaginitis. Methods This was a randomized controlled clinical study that included 210 women with diagnosed vaginitis. Patients were divided into two basic groups, women in reproductive period and postmenopausal period. Three subgroups including 30 patients each received one of the three vagitorie formulations for 5 days, after which the effects on subjective and objective symptoms were monitored. Results Three types of vagitories based on plant extracts had a positive effect in the treatment of vaginitis. Vagitories based on tea tree oil showed better efficiency compared to vagitories with St. John's wort and vagitories based on extracts of five plants. Women in postmenopausal group reported better tolerability of St. John's wort-based and five herbs-based vagitories compared to tea tree oil based vagitories. Conclusion Investigated vagitories showed a positive effect on both objective and subjective symptoms of vagitnis. No serious side effects were reported.

Energy efficiency (EE) is an important performance metric in communication systems. However, to the best of our knowledge, the energy-efficient resource allocation (RA) problem in non-orthogonal multiple access enabled backscatter communication networks (NOMA-BackComNet) comprehensively considering the user’s quality of service (QoS) has not been investigated. In this letter, we present the first attempt to solve the EE-based RA problem for NOMA-BackComNet with QoS guarantee. The objective is to maximize the EE of users subject to the QoS requirements of users, the decoding order of successive interference cancellation and the reflection coefficient (RC) constraint, where the transmit power of the base station and the RC of the backscatter device are jointly optimized. To solve this non-convex problem, we develop a novel iteration algorithm by using Dinkelbach’s method and the quadratic transformation approach. Simulation results verify the effectiveness of the proposed scheme in improving the EE by comparing it with the other schemes.

In beyond fifth-generation (B5G) era, massive multiple-input multiple-output (M-MIMO) will be a key technology to offer higher network capacities. Due to the different frequency of uplink and downlink channels in FDD systems, the channel state information (CSI) feedback from user terminal to the base station is necessary, but this reduces the spectrum efficiency. This letter proposes a deep learning based solution to predict the downlink CSI in frequency division duplex (FDD) systems, which is termed as complex-valued three dimensional convolutional neural network (CV-3DCNN). The proposed network uses a complex-valued neural network in complex domain to deal with the complex CSI matrices, and adopts three-dimensional convolution operations for feature extraction. The proposed scheme aims to make full use of the hidden information of the complex matrices of the CSI data, and to minimize information loss caused by data processing. The experimental results demonstrate that the proposed architecture can improve accuracy of the downlink CSI prediction by approximately 6 dB.

Aim To investigate the effect of intermittent traction therapy (ITT) on pain in patients with chronic low back pain (CLBP). Methods A total of 81 patients with CLBP were included: experimental group received ITT (n=40) and control group received conservative physical treatment (n=41) 10 times for two weeks. A visual analogue scale (VAS) was used for measuring low back pain. Results In the experimental group, 26 (out of 40; 65.0%) patients were females, in the control group 20 (out of 41; 48.8%) were females (p=0.141). In a within-group comparison, median of VAS value was significantly decreased in both groups after ITT. A comparison of pre-intervention and post-intervention VAS value showed no statistically significant difference. Females from the experimental group had a significantly greater decrease of VAS compared with females from the control group. Patients in the ITT group with L5/S1 level of hernia had lower estimated marginal mean of VAS scale compared to the control group, as well the patients with left side of leg pain. Conclusion: Intermittent traction therapy is an effective treatment for pain reduction in patients with chronic low back pain.

Background: Psoriasis is a chronic incurable disease, and patients develop associated diseases such as obesity, diabetes, high blood pressure, dyslipidemia. Objective: The aim of the study is to determine the frequency of comorbidities (obesity, diabetes, dyslipidemia, high blood pressure) in men with psoriasis, and the relationship between the duration of psoriasis and the occurrence of comorbidities. Methods: A prospective study was conducted and included 88 male subjects, mean age 52,70 (SD=± 14,05) years, mean psoriasis duration 15,13 (SD=±12,43) years. Results: The incidence of obesity was 30,68%, high blood pressure 29,55%, dyslipidemia 22,73%, diabetes 13,64%. There was a weak correlation between the duration of psoriasis and the occurrence of obesity (r=0,11), dyslipidemia (r=0,18), diabetes (r=0,01), and high blood pressure (r=-0,02). Conclusion: Comorbidities occur in men with psoriasis, and their occurrence is not related to the duration of the disease.