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Influence of elbow angle on the reliability and validity of bioelectrical impedance analysis

Published on: 23rd November, 2017

OCLC Number/Unique Identifier: 7286351075

Hand-to-hand bioelectrical impedance (HH BIA) is a low-cost method to estimate percent body fat (%BF). The BIA method is consistently reliable, but questions on validity remain. We have observed anecdotally that elbow position can render consistently different measures of %BF while using HH BIA, thus leading to the question: Does elbow angle influence the validity of measures derived using HH BIA? The purpose of this study was to assess the effect of elbow position (i.e., IN=flexed to 90° versus OUT=fully extended) on the reliability of HH BIA on 44 male and 24 female healthy adults (age=21±2 yrs, BMI=23±3). An additional aim was to assess the validity of the HH BIA %BF on a subset of subjects (n=12) using air displacement plethysmography (BOD POD®) as the criterion measure. The IN position was ~4%BF lower than the OUT position for HH BIA (p=0.05, effect size=0.67). Measures of %BF for both trials for the IN [intraclass correlation coefficient (ICC)=0.99, coefficient of variation (CV)=2.99%] and OUT (ICC=0.99, CV=1.48%) conditions were highly reliable. On the subsample, the OUT (18.3±6.7 %BF) position exceeded both the IN (14.5±7.4 %BF) and the BOD POD® (16.1±7.8 %BF) measures (p<0.05); however, IN and BOD POD® measures of %BF did not differ (p=0.21). These findings support that HH BIA is a reliable measure at both elbow positions; however, %BF estimations vary considerably (~4%) with respect to the criterion measure depending on elbow position. The OUT position was found to overestimate criteria %BF. Further research may reveal an optimum elbow angle position for HH BIA estimates of %BF.
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Review of AI in Civil Engineering

Published on: 8th July, 2024

This paper reviews the transformative impact of Artificial Intelligence (AI) on civil engineering. It explores AI's fundamental concepts and its applications across structural analysis, construction management, transportation, geotechnical engineering, and sustainability. The review highlights AI's role in automating tasks, predicting outcomes, and optimizing designs throughout project lifecycles. Recent advancements in AI-driven technologies for structural health monitoring, predictive maintenance, and risk assessment are discussed, along with challenges like data quality and model interpretability. Future trends such as autonomous construction and digital twins are examined, emphasizing the need for continued research and interdisciplinary collaboration. In conclusion, this paper offers insights for leveraging AI to address evolving challenges and opportunities in civil engineering, fostering innovation, sustainability, and resilience in infrastructure development.
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The Courage to implement Samplings to evaluation efficiency Medical Clinics OECD

Published on: 17th July, 2018

OCLC Number/Unique Identifier: 7795943428

We are able to test with statistic method Based Evidence Medicine the new Medicaments on common World Market or the new Medical Devices - Orthopaedic implants. Of course, with usage the same principles we could Tests similar ways the explicit efficiency, legalities and Technical Requirements Laws by Medical processing for implanting by standard Health care in Orthopaedic Clinics in network OECD.
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Prevalence and Risk Factors to Preterm Labor through a Study in Jiblah University Hospital, Ibb, Governorate, Yemen

Published on: 18th February, 2025

Background: Preterm Birth (PTB) is the largest direct cause of neonatal mortality and the second leading cause of under-five mortality following pneumonia. Although there are studies conducted before, the magnitude of PTB remains a major issue in most developing countries including Yemen. Therefore, this study aims to assess the prevalence and associated factors of premature birth among newborns delivered in Jiblah University Hospital in Ibb governorate, Yemen.Objectives: No studies have previously been conducted about preterm labour in Jiblah University Hospital in Ibb governorate, Yemen.Methods: This retrospective observational study was conducted in the Department of Obstetrics & Gynecology, Jiblah University Hospital in Ibb Governorate, from 1 December 2023 to 29 February 2024.Results: A total of 1350 pregnancies, 252 (18.67%) were preterm deliveries and 1089 (80.66%) were full-term deliveries at Jiblah University Hospital, Ibb. Our study shows the distribution of participants based on socio-demographic factors. The data that out of the total 252 female participants, with ages mean ± std = 27.43 ± 6.34 roughly 18.67% experienced preterm deliveries. Our study demonstrates that several factors are significantly linked to preterm birth, including the number of siblings, blood pressure, gravida, and abortion number, where the Chi-square p - value was < 0.05. On the other hand, the results from the logistic regression analysis indicated the predictive potential of certain socio-demographic factors in relation to preterm birth. Conclusion: In this study, the number of siblings, blood pressure, gravida, and abortion number are the risk factors for premature delivery. Recognizing the most common risk factors for PTB will help to increase awareness about high-risk pregnancy, improve the preventive measures of preterm risk factors, and modify preterm care protocol in nurseries. 
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The influence of physical activities on biological age parameters of females from 17 to 18 years old

Published on: 17th August, 2018

OCLC Number/Unique Identifier: 7844553552

The effect of weekly physical activity on biological age (BA) parameters, we have conducted a study 215 females from 17 to 18 years old who were divided into the experimental (EG, n=105) and control (CG, n=110) groups. It was established that if at the end of the experiment the BA parameters of the females CG weren’t a significantly different from the average data (p>0.05), then there was a statistically significant decrease in the BA parameters of the females EG. This was confirmed by statistical probability (p<0.01), which suggests the dependence of biological age parameters on the extent of weekly physical activity.
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Liver cyst infection in kidney transplant patient with autosomal dominant polycystic kidney disease: Interest of PET/CT in diagnosis and treatment

Published on: 14th December, 2018

OCLC Number/Unique Identifier: 7964794073

Liver cyst infection in patients with autosomal dominant polycystic kidney disease (ADPKD) is a rare but life-threatening complication. Diagnosis and treatment remain challenging. We report the case of a 64-year-old kidney transplant patient presenting with fever and abdominal pain. The diagnosis of liver cyst infection was made by positron emission tomography scan (PET/CT). Moreover, the course of our patient illustrates the interest of subsequent PET/CT during follow-up as our patient failed on antibiotherapy and required liver cyst drainage.
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Contractions of athlete’s foot and its muscle oxygenation

Published on: 5th December, 2018

Sustained isometric contractions of skeletal muscles produce intramuscular pressures that leads to blood flow restriction. In result an active muscle feels deficit of oxygen what bring to muscle fatigue. In another side during exercise we have physiological contradiction between raising of oxygen demand by working muscle and restriction of blood flow due to vessel pressing. To clarify this issue many research has been performed based mainly on measurement of blood flow in muscle tissue. The purpose of this study was to assess real-time changes in muscle oxygenation during a sustained isometric contractions of dorsiflexor muscle of low (30%), moderate (60%) and submaximal (90%) intensity. Experiments were conducted using the subject’s dominant (right) leg. Volunteers was recruited from eight male students of USIPC (age: 19±2 years, weight: 75±6 kg). Tissue oxygenation index (StO2) were recorded from the tibialis anterior using NIRS device (NONIN). Saturation was higher at 30% compared with both 60% and 90% MVC at all time points after start exercise and higher at 60% than 90%. Oxygen consumption (VO2) permanently increased from slow (30%) to moderate (60%) and submaximal contractions. After cessation of the each contraction there was a large and immediate hyperemic response. Rate of StO2 increasing after effort cessation what reflects the resaturation of hemoglobin which depend on integrity and functionality of vascular system and reflects blood vessel vasodilation. StO2 restoration rate permanently increased from slow (30%) to moderate (60%) and submaximal contractions too. At last on final stage of experiment arterial occlusion test has been performed to determine the minimal oxygen saturation value in the dorsiflexors. Oxygen saturation reached a 24±1.77% what is significantly higher than StO2 after 60 and 90%MVC. So, we can conclude that oxygen saturation at 60% and 90% MVC are similar and sharply decreased after start of exercise. It means that after 60% MVC take place occlusion of blood vessels due to intramuscular pressure. Oxygen consumption of active muscle increased depend on intensity of exertion according to increasing of oxygen demand. StO2 resaturation rate (Re) permanently increased from slow (30%) to moderate (60%) and to submaximal contractions. Re increasing after effort cessation reflects the resaturation of hemoglobin which depend on integrity and functionality of vascular system and reflects blood vessel vasodilation.
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Endocrine abnormalities in two siblings with Rothmund Thomson Syndrome

Published on: 11th October, 2018

OCLC Number/Unique Identifier: 7906107605

Rothmund-Thomson syndrome is a rare autosomal recessive disorder characterized by poikiloderma (skin atrophy, telangiectasia, hyper- and hypopigmentation), congenital skeletal abnormalities, short stature, premature aging, and increased risk of malignant disease. Two siblings with Rothmund-Thomson Syndrome showed the following characteristic features: severe growth failure, dystrophic nails, absent eyelashes/eyebrows, small hands, clinodactyly, microdontia and congential poikiloderma. In addition, delayed sexual development with cryptorchidism in the male and Hashimato thyroiditis in the female patient were detected. These cases are presented here because of these endocrine patterns, with the aim of drawing attention to the invisible aspects of Rothmund-Thomson syndrome.
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Kinematics and Electromyographic Analysis of Gait with Different Footwear

Published on: 24th January, 2017

OCLC Number/Unique Identifier: 7317654943

Kinematic analysis and surface electromyography are tools being used as important methods to evaluate the human gait and to analyze different types of footwear aiming modifications and adaptations to the human locomotor system, especially of the feet. The aim of the present study was to analyze through electromyography (EMG) the muscles tibialis anterior (TA) and gastrocnemius lateralis (GL) and gastrocnemius medialis (GM) and to capture digital images of the human gait in four different footware situations, barefoot with tennis, platform shoes and high heels. Twenty healthy women with a mean age of 22.6 years took part in this experiment, which was performed on a treadmill at a speed of 3.8 m/s. The results showed that shoes that do not allow a normal movement of the tarsal bones caused changes in the trajectory of the gait, which promotes a greater muscular movement. This study concluded that shoes closer to a normal position and allow greater mobility of the feet, decrease muscular demands, which in everyday situations cause less localized muscular fatigue. 
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Physical Performance in the Overweight/Obesity Children Evaluation and Rehabilitation

Published on: 31st July, 2024

Introduction: Childhood obesity is one of the current themes of medical research, being considered not so much a multidimensional condition but primarily a real problem of worldwide interest.The aim of our randomized study was to evaluate and compare the effects of physical exercise associated with an educational program on clinical-functional status in overweight and obese children.Material and method: Participants were children hospitalized, through the emergency service, in the Pediatric Department, Craiova Municipal Clinical Hospital, between June and November 2023. 93 overweight and obese children, aged between 2 and 16 years, were evaluated (clinical, paraclinical and functional) by a multidisciplinary team and randomized into the control group (group C – 63 children) and the study group (group S – 30 children). After the resolution of the acute digestive or respiratory disease, the children in group S underwent a program to restore their functional status, based on educational measures (following the 5-2-1-0 rule) and physical exercises, for 12 weeks. Anthropometric data were measured (height, weight, body mass index); physical performance wasevaluated by gait analysis (we used the BTS G – WALK / BTS G – SENSOR 2 system, BTS Bioengineering Corp, Italy) with the determination of four parameters – the Timed Up-and-Go (TUG) test, the symmetry index, the walking test six minutes (6 MWT) and walking cadence or average cadence (steps/min) in both groups of children.The results were obtained by analyzing the differences in values obtained in the two moments T1 (initial) and T2 (after three months). The proportion of girls and boys was approximately equal within obesity class in each study group. Although we did not obtain statistically significant differences between the monitored parameters, between the two groups, for the two evaluation moments, the children in Group S had a clearly favorable evolution for physical performance parameters, whose average value was improved in T2. Anthropometric data did not change.Conclusion: The present study confirms the effectiveness of the multimodal (educational-kinetic) program for the physical performance of overweight/obese children. The sustained running of the program at home, with the involvement of the family and the school environment, is essential for the well-being of these children, with a favorable impact on the quality of life later.
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