scholarly journals Motion Analysis of Long-Distance Drive in Woodball Athletes

Author(s):  
Fajar Awang Irawan ◽  
Hanif Putra Toma ◽  
Dhias Fajar Widya Permana ◽  
Nur Suciati ◽  
Preeyaporn Gulsirirat

The purpose of this study was to analyze the motion of long-distance drive in woodball athletes. The method in this study using quantitative descriptive using observation by Video Recording. The total sample used in this study 8 woodball athletes Semarang State University and all of them were willing to participate in the study by signing the informed consent form. This study uses data analysis techniques using the Kinovea application software Version 0.8.15. The results found that the preparation phase obtaining appropriate criteria, with an average score of 4. The prefix phase in this movement was of 3.8 with appropriate criteria and the implementation phase of 3.7 with appropriate criteria. The follow-through phase obtained an average score of 3.4 with almost appropriate criteria. Overall, the average in the motion analysis is 3.7 with the appropriate category. The conclusion of this study found that motion analysis of long-distance drive in woodball athletes are in the appropriate category. This study also showed quite effective and quite efficient based on the video analysis used. The limitation in this study still focuses on the kinetic data. Future research is expected to improve the quality of the drive and also minimize the occurrence of injuries.

2021 ◽  
Vol 9 (2) ◽  
pp. 210-219
Author(s):  
Fajar Awang Irawan ◽  
Wisnu Kerta Raharja ◽  
Tafriyadhur Risa Billah ◽  
Mirza Arif Ma'dum

Penelitian ini bertujuan untuk menganalisis gerakan free throw sesuai dengan kaidah Dave Hopla. Metode penelitian ini menggunakan eksperimen dengan teknik tes dan pengukuran. Total sampel berjumlah 5 atlet PPLP Basket Kota Semarang yang telah mengisi inform consent dan menyetujui prosedur penelitian. Hasil penelitian ini didapatkan rata rata waktu pada tahap persiapan sebesar 0,53 ± 0,13 detik dengan sudut ayunan sebesar 120°. Gerakan awalan sudut lengan 90° dan rata rata waktu 0,25 ± 0,04 detik dengan sudut fleksi lutut sebesar 99,04 ± 0,04 derajat. Data pada tahap pelaksanaan untuk waktu yang diperoleh sebesar 0,29 ± 0,07 detik dengan sudut fleksi lengan sebesar 55,74 ± 5,54 derajat sedangkan pada tahap akhir dengan rata rata waktu 0,24 ± 0,04 detik dengan jarak shooting 3,64 ± 4,64 meter. Kesimpulan dalam penelitian ini menunjukkan bahwa gerakan free throw sudah sesuai dengan kaidah dari Dave Hopla. Hasil free throw juga menunjukkan bahwa shooting precision pada kategori Cukup. Keterbatasan dalam penelitian ini yaitu jumlah sampel yang sedikit terkendala pembatasan social pada masa pandemic Covid-19. Penelitian selanjutnya diharapkan bahwa kaidah Dave Hopla dapat dijadikan sebagai rujukan dalam melakukan free throw untuk efektivitas dan efisiensi gerakan serta akurasi shooting.Biomechanical Analysis of Basketball Free Throw According to The Rules of Dave HoplaAbstractThis aims of this study was to analyze the free throw motion according to Dave Hopla's rules. This research method uses descriptive quantitative with survey tests and measurements. The total sample consisted of 5 PPLP Basket athletes in Semarang who had filled the informed consent and approved the research procedure. The results of this study found an average time in the preparation phase was 0.53 ± 0.13 seconds with a swing angle of 120°. The prefix movement of the arm angle was 90° and an average time was 0.25 ± 0.04 seconds with a knee flexion angle of 99.04 ± 0.04 degrees. The data at the implementation phase for the time obtained were 0.29 ± 0.07 seconds with an arm flexion angle was 55.74 ± 5.54 degrees while in the follow through phase an average time was 0.24 ± 0.04 seconds with a shooting distance of 3.64 ± 4.64 meters.The conclusion of this study showed that the free throw motion is in accordance with Dave Hopla's rules. The free throw result also showed that the shooting precision is in the Moderate category. The limitation in this study was the sample size is slightly constrained by social restrictions during the Covid-19 pandemic. Further research is expected that Dave Hopla's rule can be a reference in making effective and efficient free throws.


2021 ◽  
Vol 2 (2) ◽  
pp. 183-188
Author(s):  
Alrima Charnevi ◽  
Syahril Syahril ◽  
Irsyad Irsyad ◽  
Lusi Susanti

The purpose of this research is knowing about the organizational culture in Balai Wilayah Sungai Sumatera V SNVT Pelaksanaan Jaringan Pemanfaatan Air Ws. IAKR Padang. The methods of this research is quantitative descriptive. Data collection using primary data obtained from questionnaires with measurement instruments using the Likert scale. The result of the questionnaires have been tested for validity and reliability. The population of this study were all employees of Balai Wilayah Sungai Sumatera V SNVT Pelaksanaan Jaringan Pemanfaatan Air Ws. IAKR Padang. The technique used is proportionate random sampling with a total sample is 38 employees. The result showed that the organizational culture at Balai Wilayah Sungai Sumatera V SNVT Pelaksanaan Jaringan Pemanfaatan Air Ws. IAKR Padang is already in the strong category because it gets an average score of 3.84.


2020 ◽  
Vol 21 (1) ◽  
pp. 61-70
Author(s):  
Toncerius M. Lesu ◽  
S.P.N. Nainiti ◽  
Serman Nikolaus

The aim of this research is to find out how big the role of the farmer group members in increasing rice production at Korobhera Village, Meggo Subdistrict, Sikka District. The research has been done on April to May 2019. This is a qualitative study with purposive sampling considering the site was one of rice central production. The objectives of the study were to know : 1) how big the role of the farmer group members to productivity increasing in the area of research ; 2) the constraints faced by the members of the farmer group. Sample was done randomly using simple random sampling method with a total sample size of 50 people, who were the members of four farmer groups existed. The results of research indicated that the role of farmer group members in increasing rice production at the location of research was high, shown by the percentage of the accomplishment maximum score from average score in the amount of 75,65% (average score 87). The constraints faced by members of farmer group were quite similar, which were financial capital limits problem, uncaged livestocks and the availability of production tools was often not on time.


Author(s):  
Adina S Kazan ◽  
Laura M Perry ◽  
Wasef F Atiya ◽  
Hallie M Voss ◽  
Seowoo Kim ◽  
...  

Abstract Tobacco use is a leading preventable cause of early mortality and is prevalent among adults with mental health diagnoses, especially in the southern USA. Increasing cessation resources in outpatient mental health care and targeting individuals most receptive to changing their behavior may improve cessation. Drawing on the transtheoretical model, our goals were to develop an educational video about the Louisiana Tobacco Quitline and evaluate its acceptability. We designed the video with knowledge derived from Louisiana-specific data (2016 Louisiana Adult Tobacco Survey, N = 6,469) and stakeholder feedback. Bivariate associations between demographic/tobacco-use characteristics and participants’ stage of quitting (preparation phase vs. nonpreparation phase) were conducted, which informed design elements of the video. Four stakeholder advisory board meetings involving current smokers, mental health clinicians, and public health advocates convened to provide iterative feedback on the intervention. Our stakeholder advisory board (n = 10) and external stakeholders (n = 20) evaluated intervention acceptability. We found that 17.9% of Louisiana adults were current smokers, with 46.9% of them in the preparation phase of quitting. Using insights from data and stakeholders, we succeeded in producing a 2-min video about the Louisiana Tobacco Quitline which incorporated three themes identified as important by stakeholders: positivity, relatability, and approachability. Supporting acceptability, 96.7% of stakeholders rated the video as helpful and engaging. This study demonstrates the acceptability of combining theory, existing data, and iterative stakeholder feedback to develop a quitline educational video. Future research should examine whether the video can be used to reduce tobacco use.


2021 ◽  
pp. 1-11
Author(s):  
Trilas M. Leeman ◽  
Bob G. Knight ◽  
Erich C. Fein ◽  
Sonya Winterbotham ◽  
Jeffrey Dean Webster

ABSTRACT Objectives: Although wisdom is a desirable life span developmental goal, researchers have often lacked brief and reliable construct measures. We examined whether an abbreviated set of items could be empirically derived from the popular 40-item five-factor Self-Assessed Wisdom Scale (SAWS). Design: Survey data from 709 respondents were randomly split into two and analyzed using confirmatory factor analysis (CFA). Setting: The survey was conducted online in Australia. Participants: The total sample consisted of 709 participants (M age = 35.67 years; age range = 15–92 years) of whom 22% were male, and 78% female. Measurement: The study analyzed the 40-item SAWS. Results: Sample 1 showed the traditional five-factor structure for the 40-item SAWS did not fit the data. Exploratory factor analysis (EFA) on Sample 2 offered an alternative model based on a 15-item, five-factor solution with the latent variables Reminiscence/Reflection, Humor, Emotional Regulation, Experience, and Openness. This model, which replicates the factor structure of the original 40-item SAWS with a short form of 15 items, was then confirmed on Sample 1 using a CFA that produced acceptable fit and measurement invariance across age groups. Conclusions: We suggest the abbreviated SAWS-15 can be useful as a measure of individual differences in wisdom, and we highlight areas for future research.


2019 ◽  
Vol 58 (04/05) ◽  
pp. 124-130
Author(s):  
Elahe Gozali ◽  
Reza Safdari ◽  
Marjan Ghazisaeedi ◽  
Bahlol Rahimi ◽  
Hamidreza Farrokh Eslamlou ◽  
...  

Abstract Background Despite recent advances in the field of medical sciences, children's developmental motor disorders (DMDs) are considered as one of the challenges in this area. Establishment of electronic systems for recording and monitoring children's DMDs can play an effective role in identifying patients and reducing the costs and consequences of the disease management. The aim of this study was to identify and validate the requirements for a registry system of children's DMDs in Iran. Methods The present descriptive–analytical study was performed in three main stages. In the first step, the literature was reviewed to identify the requirements. In the second stage, the information obtained from the literature review was used to develop a questionnaire for validating and selecting the requirements for an electronic system of recording DMDs in infants. In the final stage, the requirements were validated by selected experts (22 specialists). Data were analyzed using SPSS 20 software (IBM Corporation, New York, United States). Results According to findings, the requirements of a registry system for children's DMDs were identified in three areas of demographic (24 data elements), clinical data (87 data elements), and technical (28 capabilities). In the demographic section, data elements of “family history of motor disorders” (mean = 1.18) and “drug allergy” (mean = 2.9) gained an average score of < 2.5 and therefore were not selected as data elements necessary for the registry system of data recording and monitoring children's DMDs. Conclusion In such developing countries as Iran, standard information recording and management is not properly done due to a large amount of information and the lack of comprehensive information registry systems. The findings of this study can help to design and establish information registry systems in the field of children's DMDs. Based on the findings of this research, it is recommended that future research be done to explore infrastructures necessary for providing a suitable platform to design and implement information registry systems in the field of children's DMDs.


2010 ◽  
Vol 21 (3) ◽  
pp. 312-352 ◽  
Author(s):  
Jon C. Lohse

The earliest Lowland Maya are commonly recognized by permanent architecture and the appearance of pottery. However, when other lines of evidence are considered, strong continuities with late Archaic populations can be seen. Reconciling these views relies on more than simply gathering more data. It is also necessary to consider the effect of decades of scholarship that defines the precolumbian Maya as “civilization” rather than considering the historical contexts of important transitions, such as the one that culminated with sedentism, the adoption of new technologies, and participation in long-distance exchange. The Archaic-to-Preclassic transition was relatively brief and largely obscured by the practices of establishing permanent dwellings. Nevertheless, this period must have been extremely dynamic and marked by significant cultural change, making it important to researchers interested in early Mesoamerica. Using three lines of evidence—subsistence, economy and technology, and stratigraphically controlled radiocarbon data—this article argues that the Lowland Maya had their cultural origins at least in the late Archaic and that the case for pottery before ca. 1000 B.C. remains uncertain. Future research is needed to determine precisely how far back in time certain cultural practices that characterize Preclassic and Classic Maya society can be documented.


2014 ◽  
Vol 281 (1795) ◽  
pp. 20140878 ◽  
Author(s):  
Kathryn McMahon ◽  
Kor-jent van Dijk ◽  
Leonardo Ruiz-Montoya ◽  
Gary A. Kendrick ◽  
Siegfried L. Krauss ◽  
...  

A movement ecology framework is applied to enhance our understanding of the causes, mechanisms and consequences of movement in seagrasses: marine, clonal, flowering plants. Four life-history stages of seagrasses can move: pollen, sexual propagules, vegetative fragments and the spread of individuals through clonal growth. Movement occurs on the water surface, in the water column, on or in the sediment, via animal vectors and through spreading clones. A capacity for long-distance dispersal and demographic connectivity over multiple timeframes is the novel feature of the movement ecology of seagrasses with significant evolutionary and ecological consequences. The space–time movement footprint of different life-history stages varies. For example, the distance moved by reproductive propagules and vegetative expansion via clonal growth is similar, but the timescales range exponentially, from hours to months or centuries to millennia, respectively. Consequently, environmental factors and key traits that interact to influence movement also operate on vastly different spatial and temporal scales. Six key future research areas have been identified.


2022 ◽  
Author(s):  
Beth K Jaworski ◽  
Katherine Taylor ◽  
Kelly M Ramsey ◽  
Adrienne J Heinz ◽  
Sarah Steinmetz ◽  
...  

BACKGROUND Although the pandemic has not led to a uniform increase of mental health concerns among older adults, there is evidence to suggest that some older veterans did experience an exacerbation of pre-existing mental health conditions, and that mental health difficulties were associated with a lack of social support and increasing numbers of pandemic-related stressors. Mobile mental health apps are scalable, may be a helpful resource for managing stress during the pandemic and beyond, and could potentially provide services that are not accessible due to the pandemic. However, overall comfort with mobile devices and factors influencing the uptake and usage of mobile apps during the pandemic among older veterans are not well known. COVID Coach is a free, evidence-informed mobile app designed for pandemic-related stress. Public usage data have been evaluated, but its uptake and usage among older veterans has not been explored. OBJECTIVE The purpose of the current study was to characterize smartphone ownership rates among U.S. veterans, identify veteran characteristics associated with downloading and use of COVID Coach, and characterize key content usage within the app. METHODS Data were analyzed from the 2019-2020 National Health and Resilience in Veterans Study (NHRVS), which surveyed a nationally representative, prospective cohort of 3,078 U.S. military veterans before and one year into the pandemic. The NHRVS sample was drawn from KnowledgePanel®, a research panel of more than 50,000 households maintained by Ipsos, Inc. Median time to complete the survey was nearly 32 minutes. The research version of COVID Coach was offered to all veterans who completed the peri-pandemic follow-up assessment on a mobile device (n = 814; weighted 34.2% of total sample). App usage data from all respondents who downloaded the app (n = 34; weighted 3.3% of the mobile completers sample) were collected between November 14, 2020 and November 7, 2021. RESULTS We found that most U.S. veterans own smartphones and veterans with higher education, greater number of adverse childhood experiences, higher extraversion, and greater severity of pandemic-related PTSD symptoms were more likely to download COVID Coach. Although uptake and usage of COVID Coach was relatively low (3.3% of eligible participants, n = 34), 50% of the participants returned to the app for more than one day of use. The interactive tools for managing stress were used most frequently. CONCLUSIONS Although the coronavirus pandemic has increased the need for and creation of digital mental health tools, these resources may require tailoring for older veteran populations. Future research is needed to better understand how to optimize digital mental health tools, such as apps, to ensure uptake and usage among older adults, particularly those who have experienced traumas across the lifespan.


2016 ◽  
Vol 842 ◽  
pp. 164-177 ◽  
Author(s):  
Indra Djodikusumo ◽  
I. Nengah Diasta ◽  
Iwan Sanjaya Awaluddin

This paper aims to demonstrate how to model, mesh and simulate a hydraulic propeller turbine runner based on the geometrical specification of the runner blade. Modeling process is divided into preparation and implementation phase. Preparation phase illustrates how to develop stream surfaces and passages, how to create and transform meanline and how to create an rtzt file. The profile in rtzt file has a certain fix thickness which has to be altered later. Implementation phase describes operations necessary in creating a propeller runner model in ANSYS BladeGen which consist of importing rtzt file, modifying the trailing edge properties and altering profile thickness distribution to that of 4 digits NACA airfoil standard. Grid is generated in ANSYS TurboGrid utilizing ATM Optimized topology. CFD simulation is done using the ANSYS Fluent with pressure inlet and pressure outlet boundary conditions and k-ε turbulence model. Hydraulic efficiency of the runner is calculated utilizing Turbo Topology module in ANSYS Fluent. The authors will share the advantages that may be obtained by using ANSYS BladeGen compared with the use of general CAD Systems.


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