1,720,957 research outputs found
Correlation Between Quadriceps, Hamstring, Tibialis Anterior, and Gastrocnemius Muscle Activation, With Knee Flexion Angle In Basketball Athlete While Performing Double-Leg Landing Task
Get PDFBackground: Anterior cruciate ligament (ACL) injury cause great disability for athlete. Recent focus of ACL injury management is on prevention by identifying the risk factors. Most of basketball injury mechanism is non-contact, related to landing process with small knee flexion angle. Muscle activation and its ratio, which control movement pattern in sagittal plane, are said to play a role in dynamic movement such as landing.
Aims: The purpose of this study is to analyze the correlation between muscles activation and their activation ratio of quadriceps, hamstring, tibialis anterior and gastrocnemius with knee flexion angle of basketball athlete while performing double-leg landing task.
Material and methods: This study was an observational analytic, cross sectional study. Study subjects was basketball athletes age 16 – 25 years in Surabaya. Measurements of knee flexion angle done with digital measurements of reflective marker, and muscle activation was measured with sEMG while performing double-leg landing task.
Result: There was no significant correlation between maximum knee flexion angle and muscle activation of quadriceps (p=0,562), hamstring (p=0,918), tibialis anterior (p=0,394) and gastrocnemius (p=0,419). There was also no significant correlation between maximum knee flexion angle and the muscle activation ratio of quadriceps-hamstring (p=0,347), quadriceps-tibialis (p=0,139), quadriceps-gastrocnemius (p=0,626), hamstring-tibialis anterior (p=0,365), hamstring-gastrocnemius (p=0,867), and tibialis anterior-gastrocnemius (p=0,109).
Conclusions: There was no correlation between muscle activation and muscle activation ratio of quadriceps, hamstring, tibialis anterior and gastrocnemius with maximum knee flexion angle in basketball athlete while performing double-leg landing task
Dysvascular Transtibial Amputation Due To Artery Stenosis: A Case Report Study
Get PDFBelow-knee (BK) amputation is one of the most commonly performed actions in dysvascular cases, but rare caused by arterial stenosis. Those had significant impacts on clinical functions and affect the contralateral limb, so its need adequate supervision during rehabilitation programs. The report are to describe the stump wound healing of the patient after amputation surgery, stump preparation at pre-prosthetic phase, prevention of knee contracture, prosthetic preparation and use, gait training and evaluation of unaffected limb. A 44-years old female with right below-knee amputation caused by stenosis of right peroneal and dorsalis pedis artery, and the wound in the residual limb was not healed within 4 weeks. She got rehabilitation to accelerate stump healing and stump shaping, maintain knee flexibility, muscle strengthening, cardiovascular endurance, transfer and ambulation. She had good compliance to the programs and achieved independent ambulation using the prosthetic within 6 months. Improvement in residual limb healing within 6 weeks, pain reduction from VAS score 3 to zero, and stump shape changes from buldging to conical. And also in knee joint range of motion, transfer ability, gait pattern using BK prosthetic (by modifying shoe components), and the patient's ability to carry out ADL (BI score 75 to 100). Laser therapy, stump shaping, flexibility exercise, strengthening exercise, endurance exercise, ambulation exercise and prosthetic use on transtibial dysvascular amputation showed good results for ADL. Careful examination to the unaffected limb could identify early occurence of stenosis. Early intervention could prevent future ischaemia and amputation
Effect of boxing exergame addition on brain-derived neurotrophic factor of elderly women
Get PDFBackground and objectives. The elderly population is growing rapidly. The aging process will result in the decline of cognitive functions. The frequency of cognitive impairment is higher in women than in men, resulting in a greater risk of decreased quality of life and dependence. Brain-derived neurotrophic growth factor (BDNF) is part of neurotrophins that play a key role in the cognitive process. Physical exercise can improve cognitive function in the normal aging process by
triggering increased expression of neurotrophic factors such as BDNF, one type of which is exergame boxing. This study aims to analyze the effect of the exergame boxing addition on the brain-derived neurotrophic factor of elderly women. Materials and methods. The study subjects were 30 elderly women, divided into treatment and control groups. Participants in the treatment group practiced exergame boxing three times per week for eight weeks. Participants in both groups were required to participate in light intensity aerobic exercise five times a week for ±15 minutes. Serum BDNF levels were assessed before and after eight weeks of exercise. Results. There was a significant increase in serum BDNF levels after the addition of exergame boxing for eight weeks in the treatment group (p = 0.002) with an effect size of 0,62. There was no significant increase in serum BDNF levels after eight weeks of light intensity aerobic exercise in the control group (p-value = 0.480). There was a significant difference in the treatment group who received the addition of exergame boxing training for eight weeks compared to the control group who only received light intensity aerobic exercise (p = 0.038). Conclusion. The addition of boxing exergame to light intensity aerobic exercise for eight weeks can improve the BDNF serum of elderly women compared to the use of light intensity aerobic exercise alone
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
- …
