bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Effect of Natural Fiber Composite of Acasia Bark and Oil Palm Empty Fruits Using Epoxy Resin Adhesive on Mechanical Properties
Authors: Yulianto Dody , Rintami Muhammad , Anwar Irwan , Hastuti Kurnia 
Published: October 2022

ABSTRAK

Perkembangan teknologi komposit tidak hanya pada komposit sintetis, akan tetapi juga mengarah pada komposit alam (Natural Composite) dikarenakan keistimewaan sifatnya yang dapat di daur ulang atau istilah lain terbarukan. Penelitian ini bertujuan membuat bahan komposit serat alam dan resin epoxy terhadap sifat mekanis. Pada penelitian ini, komposisi tandan kosong kelapa sawit dan serat kulit akasia dengan nilai 15%+5%, 10%+10% dan 5%+15% dengan bahan perekat resin epoxy 80%. Hasil uji bending menunjukkan bahwa campuran komposit 80% resin epoxy, 15 % serat tandan kosong kelapa sawit dan 5 % serbuk kayu akasia mempunyai nilai kekuatan bending yang terendah yaitu 9,95N/mm2, sedangkan campuran komposit 80% resin epoxy, 5% serat tandan kosong kelapa sawit dan 15 % serbuk kayu akasia mempunyai nilai kekuatan bending tertinggi yaitu 20,84 N/mm2. Hal ini disebabkan karena campuran serbuk kayu akasia memiliki struktur dari serat akasa lebih kasar, kuat, padat dan lebih berat dari pada tandan kosong kelapa sawit yang memiliki stuktur serat yang lebih ringan, rapuh dan berongga (tidak padat). Hasil kekuatan impact yang paling tinggi dari campuran serat alam 80% resin epoxy, 15% serbuk kayu akasia dan 5% TKKS dengan nilai 134 J/mm2. Hal ini disebabkan dari jumlah campuran dari akasia lebih besar maka kekuatan spesimen lebih tinggi kekuatannya karena semakin banyak serat akasia maka semakin terus meningkat kekuatan spesimen tersebut.

Kata kunci : Serat Alam, Kulit Kayu Akasia, Resin Epoxy, Tandan Kosong Kelapa Sawit, Sifat Mekanik
Thoracolumbar And Lumbopelvic Spinal Alignment During The Deadlift Exercise: A Comparison Between Men And Women
Authors: Bengtsson Victor , Aasa Ulrika , Öhberg Fredrik , Berglund Lars 
Published: October 2022

Background A neutral spinal alignment is considered important during the execution of the deadlift exercise to decrease the risk of injury. Since male and female powerlifters experience pain in different parts of their backs, it is important to examine whether men and women differ in spinal alignment during the deadlift. Objectives The purpose of this study was to quantify the spinal alignment in the upper (thoracolumbar, T11-L2) and lower (lumbopelvic, L2-S2) lumbar spine during the deadlift exercise in male and female lifters. Secondary aims were to compare lumbar spine alignment during the deadlift to standing habitual posture, and determine whether male and female lifters differ in these aspects. Study Design Observational, Cross-sectional. Methods Twenty-four (14 men, 10 women) lifters performed three repetitions of the deadlift exercise using 70% of their respective one-repetition maximum. Spinal alignment and spinal range of motion were measured using three inertial measurement units placed on the thoracic, lumbar and sacral spine. Data from three different positions were analyzed; habitual posture in standing, and start and stop positions of the deadlift, i.e. bottom and finish position respectively. Results During the deadlift, spinal adjustments were evident in all three planes of movement. From standing habitual posture to the start position the lumbar lordosis decreased 13° in the upper and 20° in the lower lumbar spine. From start position to stop position the total range of motion in the sagittal plane was 11° in the upper and 22° in the lower lumbar spine. The decreased lumbar lordosis from standing habitual posture to the start position was significantly greater among men. Conclusions Men and women adjust their spinal alignment in all three planes of movement when performing a deadlift and men seem to make greater adjustments from their standing habitual posture to start position in the sagittal plane. Level of Evidence 3
Roles And Responsibilities Of The Physical Therapist In Collegiate Athletics: Results Of A National Survey
Authors: Zarro Michael , Silverson Oliver , Soenksen Wade , Thein-Nissenbaum Jill , Cataldo Cirone Elise , Rowland Robert , Staker Justin 
Published: October 2022

Background Over the past decade, there has been an increased focus on collaboration within collegiate athletics based sports medicine. Specifically, athletic trainers (ATs) and physical therapists (PTs) are working together, often side-by-side, to provide optimal care for the injured athlete. However, the roles and responsibilities of the PT within this model are currently not well described. Purpose The purpose of this study was to identify educational training, credentials, roles, and responsibilities of the PT working with collegiate athletes. Study Design Cross-sectional survey Methods An anonymous, descriptive online survey focusing on the demographic and occupational characteristics of PTs providing care for collegiate athletes was created and distributed electronically through the American Academy of Sports Physical Therapy (AASPT), a subgroup within the American Physical Therapy Association (APTA). Results One hundred forty eligible responses were included. Sixty-four percent (90/140) of the respondents were male; 86% of the respondents (120/140) reported working in the National Collegiate Athletic Association (NCAA) Division I setting. Half (70/140) of respondents were also ATs, and 60% (83/140) were board-certified sports clinical specialists (SCS). All respondents (140/140) provide rehabilitation exercises; nearly all provide sports performance enhancement and manual therapy (97%, 136/140 and 96%, 135/140, respectively). Other identified roles and responsibilities included communication with the athletic training staff, event coverage, and personnel management. Conclusions The role of the PT within collegiate athletics sports medicine is highly varied; years of experience, certification, credentials, and location of patient care are also variable. Clinical Relevance PTs working in a collegiate athletics sports medicine setting have many paths to entry and diverse job duties. PTs interested in working in this setting should prioritize developing relevant experience and communication skills. Level of Evidence Level 3b
Rehabilitation Guidelines for Use Following a Periacetabular Osteotomy (PAO): A North American Based Delphi Consensus
Authors: Disantis Ashley E. , Ruh Ethan , Martin RobRoy , Enseki Keelan , McClincy Michael 
Published: October 2022

Background Treatment of acetabular dysplasia with a periacetabular osteotomy (PAO) has been shown to improve long term outcomes and is considered the gold standard in the setting of symptomatic hip dysplasia in patients younger than 35 years of age. Post-operative rehabilitation following a PAO plays an important role in helping patients return to their prior level of function and reduce the impact of strength deficits that may persist. Currently, there is a paucity of research supporting post-operative rehabilitation guidelines. The purpose of this study is to present expert-driven rehabilitation guidelines to reduce practice variation following a PAO. Methods A panel of 16 physiotherapists from across the United States and Canada who were identified as experts in PAO rehabilitation by high-volume hip preservation surgeons participated in this Delphi study. Panelists were presented with 11 questions pertaining to rehabilitation guidelines following a PAO. Three iterative survey rounds were presented to the panelists based on responses to these questions. This three-step Delphi method was utilized to establish consensus on post-operative rehabilitation guidelines following a PAO. Results Total (100%) participation was achieved for all three survey rounds. Consensus (>75%) was reached for 11/11 questions pertaining to the following areas: 1) weight-bearing and range of motion (ROM) precautions, 2) therapeutic exercise prescription including neuromuscular control, cardiovascular exercise, and flexibility, and 3) objective measures for return to straight line running and return to full participation in sports. Conclusion This Delphi study established expert-driven rehabilitation guidelines for use following a PAO. The standardization of rehabilitative care following PAO is essential for achieving optimal outcomes despite other factors such as geographical location and socioeconomic status. Further research on patient-reported outcomes is necessary to confirm successful rehabilitation following the guidelines outlined in this study.
Physical impairments in Adults with Developmental Dysplasia of the Hip (DDH) undergoing Periacetabular osteotomy (PAO): A Systematic Review and Meta-Analysis
Authors: O'Brien Michael J M , Jacobsen Julie S , Semciw Adam I , Mechlenburg Inger , Tønning Lisa U , Stewart Chris J W , Heerey Joshua , Kemp Joanne L 
Published: October 2022

Background Developmental dysplasia of the hip (DDH) is a condition associated with hip pain and impairments. Periacetabular osteotomy (PAO) is a common surgical treatment for DDH. Outcomes following PAO have historically been based on radiology or patient reported outcomes, and not physical impairments. Objective To investigate differences in physical impairments in adults with DDH undergoing PAO compared with asymptomatic participants, and to investigate pre- to post-PAO changes in physical impairments. Design Systematic review with meta-analysis Methods A literature search was performed in five databases (MEDLINE, CINAHL, EMBASE, Sports Discuss, and PsychINFO), using the PRISMA checklist. Studies were considered eligible if patients were aged 15 years and older, treated with PAO for DDH and if they included a physical impairment outcome measure. Two independent reviewers performed data extraction and assessed methodological quality, using a modified version of the Downs and Black checklist. Results Of 5,017 studies, 24 studies were included with 2190 patients. The methodological quality scores ranged from 39% to 88%. With low level of evidence, meta-analysis showed 58% of patients had a positive anterior impingement test (95%CI: 39-76%), prior to PAO and one to three years after PAO. Five years after PAO, the proportion fell to 17% (95%CI: 11-24%). Prior to PAO, patients with DDH walked with a lower peak hip extension angle, compared to asymptomatic participants (SMD 0.65 (95%CI 0.21-1.10). Best evidence synthesis of non-pooled data showed limited evidence of increased walking velocity, stride length and improved hip flexion and extension moment 18-months post-PAO compared to pre-op. Cadence, hip abduction and hip flexion strength did not change. Conclusion Most patients with DDH have a positive hip impingement test, pre-PAO. Compared to asymptomatic participants, patients with DDH demonstrate physical impairments during walking which appear to improve after surgery. Hip abduction and flexion strength did not change pre- to post-PAO. Level of Evidence 1b
Ultrasound Measurement of Lateral Patellar Displacement: A Cadaveric Validation Study
Authors: Kwan Lok Yin Ada , Killingback Alban , Adds Philip J 
Published: October 2022

Background Patellofemoral pain syndrome (PFPS) is one of the most common musculoskeletal complaints seen in outpatient settings. It has been suggested that hip adduction creates loads on the iliotibial band and causes lateral displacement of the patella (patellar tilt), which can lead to uneven patellofemoral joint loading, and hence, cause patellofemoral pain. In previous studies in the literature, ultrasound has been used to measure lateral patellar displacement. However, the method lacks validity data. Purpose/Hypothesis The aim of this study was to validate the use of ultrasound to measure lateral displacement of the patella, by comparing the position of the patella as measured first by ultrasound, and then by direct measurement. Study Design Descriptive Laboratory Study. Methods Nine soft-fixed cadavers were used in this study. The cadavers had been donated for anatomical examination and research under the Human Tissue Act (2004). The distance between the lateral femoral condyle and the lateral edge of the patella were measured by B-mode real-time ultrasound, and then by direct measurement, in two positions, neutral and at 20° hip adduction. Results The mean difference in the patella-to-lateral femoral condyle distance in the neutral position and at 20° adduction was 0.27 cm (ultrasound), and 0.34 cm (direct measurement), respectively. There were no significant differences between the measurements obtained by US and by direct measurement (Pearson correlation= 0.97, p=0.83). Conclusion Ultrasound is a valid and reliable method for measuring patellar position relative to the femoral condyle, and the validity data reported here suggest that it can be used with confidence in clinic to assess lateral patellar displacement. Level of Evidence 3
Hamstring Injury Rehabilitation and Prevention in the Female Athlete
Authors: O'Sullivan Lucy , Preszler Jamie , Tanaka Miho 
Published: October 2022

Hamstring injuries (HSIs) are common in female athletes and are associated with a lengthy recovery period and a high rate of reinjury. Currently, the majority of existing literature investigating HSI rehabilitation has been conducted using male participants. However, female athletes display intrinsic anatomical and biomechanical differences compared to males that influences the way this population experiences HSIs and HSI rehabilitation. HSI rehabilitation and injury prevention guidelines for female athletes must take these differences into account. Female athletes display anatomical differences such as increased anterior pelvic tilting, gluteus maximus weakness, an increased pelvic width-to-femoral length ratio, and an increased degree of femoral anteversion, all of which can predispose females to HSIs. Maneuvers designed to strengthen the gluteal musculature and transverse abdominis can overcome these risk factors. Females show increased joint laxity and a greater range of motion of hip flexion and internal rotation compared to males. Females have lower passive hamstring stiffness than males, therefore hamstring flexibility exercises may not be as necessary during rehabilitation for females as in the male athlete population. Female athletes may instead benefit from trunk stabilization exercises and agility training due to neuromuscular control deficits that arise from the maturation and growth of the female pelvis. Existing literature on hamstring injury prevention shows consistent use of the Nordic Hamstring Exercise and balance exercises may reduce the risk of sustaining an HSI in both males and females, though more studies are needed to ascertain the optimal regimen for injury prevention in the female athlete population specifically. The goal of this clinical commentary is to discuss sex-specific anatomic and biomechanical differences of the lumbar, pelvic, and hip regions with the aim of providing guidelines for rehabilitation and injury prevention of HSIs in female athletes. Level of Evidence 5
Exploring the Effects of a Neck Strengthening Program on Purposeful Soccer Heading Biomechanics and Neurocognition
Authors: Waring Katelyn M. , Smith Edward R , Austin Gary P , Bowman Thomas G 
Published: October 2022

Background Cervical (neck) strengthening has been proposed as an important factor in concussion prevention. The purpose of the study was to determine if a six-week cervical strengthening program affected neurocognition and purposeful soccer heading biomechanics. The hypothesis was that the neck strengthening program would improve strength, maintain neurocognition, and alter purposeful soccer heading biomechanics. Study Design Randomized controlled trial. Methods Twenty collegiate soccer athletes (8 males, 12 females, age=20.15±1.35 years, height=171.67±9.01 cm, mass=70.56±11.03 kg) volunteered to participate. Time (pre, post) and group (experimental, control) served as the independent variables. Four composite scores from the CNS Vital Signs computer based neurocognitive test (CNSVS; verbal memory, visual memory, executive function, reaction time) and aspects of heading biomechanics from inertial measurement units (xPatch; peak linear acceleration, peak rotational acceleration, duration, Gadd Severity Index [GSI]) served as the dependent variables. Each athlete completed a baseline measure of neck strength (anterior neck flexors, bilateral anterolateral neck flexors, bilateral cervical rotators) and CNSVS after heading 10 soccer balls at two speeds (11.18 and 17.88 m/s) while wearing the xPatch. The experimental group completed specific cervical neck strengthening exercises twice a week for six weeks using a Shingo Imara™ cervical neck resistance apparatus while the control group did not. After six weeks, the participants completed the same heading protocol followed by measurement of the same outcome variables. The alpha value was set to p<0.05 a priori. Results The interaction between time and group was significant for visual memory (F1,17=5.16, p=0.04, η2=0.23). Interestingly, post hoc results revealed visual memory decreased for the control group from pretest (46.90±4.46) compared to posttest (43.00±4.03; mean difference=3.90, 95% CI=0.77-7.03, p=0.02). Interactions for all other dependent variables were not statistically significant (p>0.05). Conclusions The cervical neck strengthening protocol allowed maintenance of visual memory scores but did not alter other neurocognitive measures or heading biomechanics. The link between cervical neck strengthening and concussion predisposition should continue to be explored. Level of Evidence Level 1b
2022 IJSPT Orthopedic Summit Research Abstracts
Authors:   International Journal of Sports Physical Therapy
Published: October 2022

The International Journal of Sports Physical Therapy is pleased to publish abstracts from the 12th Orthopaedic Summit (OSET) taking place in Boston, September 21-24, 2022. The IJSPT hosted the 2nd annual research forum and reception at OSET, sponsored by ATI Physical Therapy and Hyperice. The abstracts presented in the following pages were selected by the OSET Research Committee and editorial staff of the International Journal of Sports Physical Therapy. After careful review, a total of 17 research abstracts were accepted and presented at OSET 2022. Awards for outstanding abstracts were presented on September 23rd. The 2022 abstracts include contemporary orthopaedic and rehabilitation topics across various research designs. Each abstract presents only a brief summary of a research project / presentation and does not permit full assessment of the scientific rigor with which the work was conducted. While the abstracts offer only preliminary results that may require further refinement and future validation, they do serve an important role in sharing new research ideas and rehabilitation advancements. This sharing of ideas helps to encourage dialogue among researchers, clinicians, and educators that will ultimately contribute to the orthopaedic and rehabilitation body of knowledge. We strongly encourage authors to continue pursuing the publication of their research as a full manuscript. Thank you to all submitting abstracts for consideration. We look forward to another outstanding season of submissions for OSET 2023. Phil Page PhD, PT, ATC Chuck Thigpen PhD, PT, ATC OSET Research Committee Co-Chairs
Internet of Things (IoT) Utilization to Improve Performance and Productivity of Internal Supply Chain
Authors: Hermawan Dadang , Darsana I Made , Ernawan Yana 
Published: October 2022

The inevitable transformations brought about by the rapidly changing Internet of Things (IoT) impact all aspects of life today, including management and businesses. Specifically, areas of businesses depending mainly on internal supply chain capacity are experiencing a paradigm shift to ensure effective company performance regarding purchases, production, company sales, and product distribution. This shift means that challenges faced by the internal chain supply unit can be solved by adopting and adapting IoT as a new way to minimize work delays and save time. Moreover, IoT automatically leads to performance and productivity increases. Therefore, the present paper aims to justify adopting and adapting IoT applications in Indonesian companies, including retail businesses. Most companies’ internal supply chain units face several difficulties during and after the devastating peak of COVID-19, which has led to a total global lockdown. These problems' complexity is exponential and requires innovative ways to solve their prevailing challenges. This study used observation, interview, and documentary research methods through a large-scale survey. The survey obtained the necessary information regarding how companies utilize IoT to improve their performance and productivity without hindering their internal supply chain and production units. The study concluded that the adoption of IoT, if well implemented, leads to a sustainable company and uninterrupted supply chain performance, indicating the proper performance of the organization. Doi: 10.28991/esj-2021-SP1-017 Full Text: PDF
Characterization of Some Co-Fired Agricultural by-products for Energetic Use
Authors: Neacsu Ana , Gheorghe Daniela 
Published: October 2022

Abstract. The aim of the present study is obtaining the calorific values and the qualitative properties of the pellets made from four agricultural by-products co-fired with coal and non-cofired, in order to highlight the importance of co-fired biomass as alternative energy source. The studied samples are coarse ground grist of sorghum seeds, rape seeds, soyabean, sunflower seeds and their mixture with coal. The following parameters are calculated: higher heating values, bulk densities, energy densities, fuel value index, nitrogen and sulphur content. The proximate composition as defined by ASTM was established: moisture, ash, volatile matter, and fixed carbon. The moisture and ash content of the studied agricultural by-products are identified as the main factors of calorific influence. The obtained results come to confirm the ability of co-fired biomass to be used as fuel. As resulted from the experimental data, the co-fired biomass of agricultural residues are good resources as biofuel in the form of pellets. Among the studied samples, co-fired sunflower seeds grist presents the highest heating value, highest fixed carbon content and fuel value index, thus being a good alternative to fossil fuel in order to produce energy and reduce the domestic air pollution and the amount of wood needed.

Resumen. El objetivo del presente estudio es obtener los valores de poderes caloríficos y las propiedades cualitativas de pellets elaborados a partir de cuatro subproductos agrícolas en co-combustión con carbón y sin co-combustión. Esto se realizó con la finalidad de resaltar la importancia de la biomasa en co-combustión como fuente de energía alternativa. Las muestras estudiadas son: molienda gruesa de semillas de sorgo, colza, soja, semillas de girasol y sus mezclas con carbón. Se calcularon los siguientes parámetros: poderes caloríficos superiores, densidades aparentes, densidades energéticas, índice de valor del combustible, contenido de nitrógeno y azufre. Se estableció la composición proximal definida por ASTM: humedad, ceniza, materia volátil y carbón fijo. El contenido de humedad y cenizas de los subproductos agrícolas estudiados se identifican como los principales factores de influencia calorífica. Los resultados obtenidos vienen a confirmar la capacidad de la biomasa de co-combustión para ser utilizada como combustible. Como resultado de los datos experimentales, la biomasa co-quemada de residuos agrícolas es un buen recurso como biocombustible en forma de gránulos. Entre las muestras estudiadas, la molienda de semillas de girasol cocida presenta el valor calorífico más alto, el contenido de carbono fijo y el índice de valor de combustible más altos, por lo que es una buena alternativa al combustible fósil para producir energía y reducir la contaminación del aire doméstico y la cantidad de madera necesaria.