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Bone Quality And Fractures In Women With Osteoporosis Treated With Bisphosphonates For 1 To 14 Years, Hartmut H. Malluche, Jin Chen, Florence Lima, Lucas J. Liu, Marie-Claude Monier-Faugere, David A. Pienkowski Sep 2021

Bone Quality And Fractures In Women With Osteoporosis Treated With Bisphosphonates For 1 To 14 Years, Hartmut H. Malluche, Jin Chen, Florence Lima, Lucas J. Liu, Marie-Claude Monier-Faugere, David A. Pienkowski

Internal Medicine Faculty Publications

Oral bisphosphonates are the primary medication for osteoporosis, but concerns exist regarding potential bone-quality changes or low-energy fractures. This cross-sectional study used artificial intelligence methods to analyze relationships among bisphosphonate treatment duration, a wide variety of bone-quality parameters, and low-energy fractures. Fourier transform infrared spectroscopy and histomorphometry quantified bone-quality parameters in 67 osteoporotic women treated with oral bisphosphonates for 1 to 14 years. Artificial intelligence methods established two models relating bisphosphonate treatment duration to bone-quality changes and to low-energy clinical fractures. The model relating bisphosphonate treatment duration to bone quality demonstrated optimal performance when treatment durations of 1 to 8 …

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Tutors’ Beliefs About Language And Roles: Practice As Language Policy In Emi Contexts, Marion Heron, Doris Dippold, Necmi Aksit, Tijen Aksit, Jill Doubleday, Kara Mckeown Sep 2021

Tutors’ Beliefs About Language And Roles: Practice As Language Policy In Emi Contexts, Marion Heron, Doris Dippold, Necmi Aksit, Tijen Aksit, Jill Doubleday, Kara Mckeown

All Works

It has been well established that for all students, but particularly second language (L2) English speaking students, academic English speaking skills are key to developing specialist terminology and disciplinary content in an English as a medium of instruction (EMI) context. However, what is less clear in many contexts is the institutional language policy necessary to guide and support both L2 English speaking students and disciplinary tutors. In this paper, we focus on disciplinary tutors’ beliefs of language and their roles with respect to language support to surface implicit and covert language policies. We argue that in the absence of explicit …

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Underground Burning Of Jharia Coal Mine (India) And Associated Surface Deformation Using Insar Data, Jungrack Kim, Shih-Yuan Lin, Ramesh P. Singh, Chen-Wei Lan, Hye-Won Yun Sep 2021

Underground Burning Of Jharia Coal Mine (India) And Associated Surface Deformation Using Insar Data, Jungrack Kim, Shih-Yuan Lin, Ramesh P. Singh, Chen-Wei Lan, Hye-Won Yun

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

The underground burning in the Jharia coal mine (JCM) in India is a highly devastating environmental hazard inducing various adverse consequences. In the present study, we carried out time series analyses based on Interferometric Synthetic Aperture Radar (InSAR) and land surface temperature (LST) to study the environmental risk. First, a permanent scatterer (PS) time series analysis using Sentinel-1 images over three years was performed to detect the spatio-temporal distribution of ground deformation. Comparison of ground thermal anomaly clearly delineated the subsidence spots associated with the oxygen supply to combustion areas. On the contrary, few deformations were mapped showing pronounced uplift …

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Impact Of Construction Technology On Insurance Premiums, Salma Mohamed Ibrahim Sep 2021

Impact Of Construction Technology On Insurance Premiums, Salma Mohamed Ibrahim

Theses and Dissertations

The witnessed technological advancement within the construction industry affects stakeholders in connection, inclusive of the insurance industry. Construction insurance premiums resemble the quantification of risks in construction projects and signify a portion of the construction expenses in return to securing the investment in cases of claims. Accordingly, new construction technology is expected to have an impact on the insurance premiums. In other words, the insurance industry is expected to re-evaluate the insurance premiums according to the risks borne by the new construction technology utilized in construction projects and the likelihood of claims arising. Even though prior literature acknowledges the reduction …

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Detection Of Insider Threats Using Artificial Intelligence And Visualisation, V Koutsouvelis, S Shiaeles, B Ghita, G Bendiab Sep 2021

Detection Of Insider Threats Using Artificial Intelligence And Visualisation, V Koutsouvelis, S Shiaeles, B Ghita, G Bendiab

School of Engineering, Computing and Mathematics

No abstract provided.

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A Novel Multimodal Biometric Authentication System Using Machine Learning And Blockchain, R Brown, G Bendiab, S Shiaeles, B Ghita Sep 2021

A Novel Multimodal Biometric Authentication System Using Machine Learning And Blockchain, R Brown, G Bendiab, S Shiaeles, B Ghita

School of Engineering, Computing and Mathematics

No abstract provided.

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Prevalence And Population At Risk For Noise Induced Hearing Loss (Nihl) In Adolescent Students, Yusni Yusni, Ikbal Ikbal, Firdalena Meutia Sep 2021

Prevalence And Population At Risk For Noise Induced Hearing Loss (Nihl) In Adolescent Students, Yusni Yusni, Ikbal Ikbal, Firdalena Meutia

Folia Medica Indonesiana

Noise-Induced Hearing Loss (NIHL) is a global health problem, often underestimated, and leads to permanent hearing loss. The prevalence of NIHL in adolescents has increased in line with the increasing use of cell phones. This study aimed to determine the prevalence of NIHL and analyze the population at risk (age, gender, and school) in adolescent students. The study design was a cross-sectional study. A total of 510 students consisting of female, n=288 and male, n=222; junior high school, n=203 and senior high school, n=307 were used as research subjects. This study was conducted on August-October 2015 at Darul Ihsan School, …

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A Model Approach To Cloud Implementation On Public Libraries With A Focus On West Bengal, India, Tanmay De Sarkar , Corresponding Author, Jitendra Nath Shaw , Main Author Sep 2021

A Model Approach To Cloud Implementation On Public Libraries With A Focus On West Bengal, India, Tanmay De Sarkar , Corresponding Author, Jitendra Nath Shaw , Main Author

Library Philosophy and Practice (e-journal)

The purpose of this paper is to explore the possibility of introducing cloud architecture for public library system in areas where library automation is operational on a standalone server. It also proposes a cloud based model library management system to function on an affordable, robust architecture. The paper made an attempt to highlight the present status of library automation and networking among public libraries in West Bengal. It presents functional requirements for a SaaS based (Software as a Service) model. The simulation approach for the model architecture supports the possibility to connect all public libraries across different hierarchical tiers under …

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Pollution Prevention/Environmental Sustainability For Industry, Bruce Dvorak Sep 2021

Pollution Prevention/Environmental Sustainability For Industry, Bruce Dvorak

Department of Civil and Environmental Engineering: Faculty Publications

It has been 30 years since, in the United States, the Pollution Prevention Act of 1990 focused attention on reducing pollution through cost-effective changes in production, operation, and raw materials use. The pollution prevention approach was novel in focusing on increasing the efficiency of a process and reducing the amount of pollution generated at its source. Worldwide, industrial organizations embraced cleaner production approaches that result in reducing pollution at the source. Governmental bodies are exploring the best prevention and control polices for pollution and energy management. Since that time, the industry has successfully applied the three pillars of sustainability—economic, environmental, …

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Ethanol Extract Of Marigold Flower (Tagetes Erecta L.) Decreases The Total Cholesterol, Low Density Lypoprotein (Ldl), Malondialdehyde (Mda), And Apoliprotein B (Apob) On Hyperlipidemia Rat Models, I Nyoman Bagus Aji Kresnapati, Siti Khaerunnisa, Indri Safitri Sep 2021

Ethanol Extract Of Marigold Flower (Tagetes Erecta L.) Decreases The Total Cholesterol, Low Density Lypoprotein (Ldl), Malondialdehyde (Mda), And Apoliprotein B (Apob) On Hyperlipidemia Rat Models, I Nyoman Bagus Aji Kresnapati, Siti Khaerunnisa, Indri Safitri

Folia Medica Indonesiana

This study aimed to determine the effect of ethanol extract of gemitir flower (Tagetes erecta L.) on total cholesterol levels, Low-Density Lipoprotein C (LDL), Malondialdehyde (MDA), Apolipoprotein B (ApoB). Forty-eight Rattus norvegicus were randomly divided into 6 groups, groups were given standard feed (K-) and 5 groups of hyperlipidemia models (K +, P1, P2, P3, P4) were given High Fat Diet (HFD) for 35 days. On the 36th day, the total cholesterol levels were checked through the tail of Rattus norvegicus, and from day 37 to day 50 were given a normal diet (K-), HFD (K +), simvastatin 10 mg/kgBW …

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Evaluation Of Ansi Z535 Safety Sign Installation, Mas Amaliyah, Noeroel Widajati Sep 2021

Evaluation Of Ansi Z535 Safety Sign Installation, Mas Amaliyah, Noeroel Widajati

Folia Medica Indonesiana

A safety sign is a sign of equipment to provide protection for workers or visitors in the workplace. American National Standards Institute Z535 (ANSI Z535) is used as a basic guideline for installing safety signs in the workplace because it is more communicative by using global symbols to overcome language barriers. Occupational Safety Division of Manpower and Transmigration Departement, East Java Province (UPT Keselamatan Kerja Surabaya) is a workplace that has a risk of occupational accidents. The preliminary surveys in the area of the 3rd floor of the Division of Occupational Safety (UPT Keselamatan Kerja) Surabaya revealed that there were …

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Investigation Of The Hydrodynamic Performance Of An Oscillating Water Column Wave Energy Device Using A Smoothed Particle Hydrodynamics Model, G Zhu, J Hughes, S Zheng, D Greaves Sep 2021

Investigation Of The Hydrodynamic Performance Of An Oscillating Water Column Wave Energy Device Using A Smoothed Particle Hydrodynamics Model, G Zhu, J Hughes, S Zheng, D Greaves

School of Engineering, Computing and Mathematics

The efficiency of an oscillating water column (OWC) wave energy converter is analyzed by adopting smoothed particle hydrodynamics and using various geometries for the seabed platform. A two-dimensional, single-phase smoothed particle hydrodynamics (SPH) model is developed to simulate the hydrodynamic characteristics and fluid structure interaction for a fixed OWC located in a numerical wave flume. A linear expression between air velocity in the duct and air pressure in the chamber was imposed for considering the effect of pneumatic model. The measured free surface elevation at the chamber centre and the oscillatory air pressure generated by the fluctuating free surface within …

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The Nature Of Cofilin’S Severing Mechanism, Ethan Lester Sep 2021

The Nature Of Cofilin’S Severing Mechanism, Ethan Lester

The Yale Undergraduate Research Journal

Cofilin plays an essential role in regulating actin filament propagation through the cytoplasmic medium. Over the years, various studies have been conducted in an attempt to better understand the complex mechanism by which cofilin promotes filament severing and de-polymerization. Here, we have compiled information obtained from these studies in order to craft a more complete and succinct description of cofilin functionality. In particular, we review the precise structural and mechanical changes associated with cofilin-binding, and the subtle ways in which some of these structural changes may be interconnected.

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Strong Inclination Pacing Of Climate In Late Triassic Low Latitudes Revealed By The Earth-Saturn Tilt Cycle, Miranda Margulis-Ohnuma, Jessica Whiteside, Paul Olsen Sep 2021

Strong Inclination Pacing Of Climate In Late Triassic Low Latitudes Revealed By The Earth-Saturn Tilt Cycle, Miranda Margulis-Ohnuma, Jessica Whiteside, Paul Olsen

The Yale Undergraduate Research Journal

Gravitational interactions among masses in the solar system are recorded in Earth’s paleoclimate history because variations in the geometry of Earth’s orbit and axial orientation modulate insolation. However, astronomical models are unreliable before ~50 Ma due to the chaotic nature of the solar system and therefore must be constrained using geological observations. Here, we use environmental proxies from paleo-tropical Late Triassic lake deposits of the Newark Rift Basin to identify and tune to previously undescribed strong variations in orbital inclination. Tuning to the 173 kyr Earth-Saturn inclination cycle, theoretically stable due to the high mass of Saturn, reveals both other …

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Examining The Viability Of Computational Psychiatry: Approaches Into The Future, Mitchell Ostrow Sep 2021

Examining The Viability Of Computational Psychiatry: Approaches Into The Future, Mitchell Ostrow

The Yale Undergraduate Research Journal

As modern medicine becomes increasingly personalized, psychiatry lags behind, using poorly-understood drugs and therapies to treat mental disorders. With the advent of methods that capture large quantities of data, such as genome-wide analyses or fMRI, machine learning (ML) approaches have become prominent in neuroscience. This is promising for studying the brain’s function, but perhaps more importantly, these techniques can potentially predict the onset of disorder and treatment response. Experimental approaches that use naive machine learning algorithms have dominated research in computational psychiatry over the past decade. In a critical review and analysis, I argue that biologically realistic approaches will be …

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The Ghost University: Academe From The Ruins, Peter Fleming Sep 2021

The Ghost University: Academe From The Ruins, Peter Fleming

Emancipations: A Journal of Critical Social Analysis

No abstract provided.

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The Political Economy Of The Apocalypse, James K. Galbraith Sep 2021

The Political Economy Of The Apocalypse, James K. Galbraith

Emancipations: A Journal of Critical Social Analysis

The world faces – let us say – four great threats, and because nothing really changes, we know their names: Pestilence, War, Famine, and Death. With modest modernization these categories can serve to guide our minds on a tour of the economic policy choices of the near and distant future.

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Understanding The Effects Of Wind Intensity, Forward Speed, Pressure And Track On Generation And Propagation Of Hurricane Irma Surges Around Florida, Abram Musinguzi, Madinah Shamsu, Muhammad K. Akbar, Jason G. Fleming Sep 2021

Understanding The Effects Of Wind Intensity, Forward Speed, Pressure And Track On Generation And Propagation Of Hurricane Irma Surges Around Florida, Abram Musinguzi, Madinah Shamsu, Muhammad K. Akbar, Jason G. Fleming

Mechanical and Manufacturing Engineering Faculty Research

In this study, it is demonstrated that hurricane wind intensity, forward speed, pressure, and track play an important role on the generation and propagation of coastal storm surges. Hurricane Irma, which heavily impacted the entire Florida peninsula in 2017, is used to study the storm surge sensitivity to varying storm characteristics. Results show that the west coast experiences a negative surge due to offshore wind of the approaching storm, but the positive surge returns after the hurricane eye passes over a location and wind became onshore. In the west coast peak, surges are intensified by an increase in onshore wind …

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Using A Self-Determination Theory Approach To Understand Student Perceptions Of Inquiry-Based Learning, Fangfang Zhao, Gillian Roehrig, Lorelei E. Patrick, Chantal Levesque-Bristol, Sehoya Cotner Sep 2021

Using A Self-Determination Theory Approach To Understand Student Perceptions Of Inquiry-Based Learning, Fangfang Zhao, Gillian Roehrig, Lorelei E. Patrick, Chantal Levesque-Bristol, Sehoya Cotner

Biological Sciences Faculty Publications

Inquiry-based laboratory activities, as a part of science curricula, have been advocated to increase students’ learning outcomes and improve students’ learning experiences, but students sometimes struggle with open-inquiry activities. This study aims to investigate students’ perceptions of inquiry-based learning in a set of laboratory activities, specifically from a psychological (i.e., Self-Determination Theory) perspective. Students’ ratings of the level of inquiry in these activities indicate that students’ perceptions of inquiry align with the instructor-intended amount of inquiry in each exercise. Students’ written responses, explaining their ratings, indicate that students’ perceptions of the amount of inquiry in a given lab exercise relate …

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The Open University And Prison Education In The Uk – The First 50 Years, Rod Earle, James Mehigan, Anne Pike, Dan Weinbren Sep 2021

The Open University And Prison Education In The Uk – The First 50 Years, Rod Earle, James Mehigan, Anne Pike, Dan Weinbren

Journal of Prison Education and Reentry (2014-2023)

In 2019, The Open University (henceforth, The OU), based in Milton Keynes in the UK, celebrated its 50th anniversary. Since 1971 it has pioneered the delivery of Higher Education in prisons and other secure settings. Some 50 years on, in 2021 there is much to celebrate and still more to learn. In this article we briefly review the establishment of the OU in 1969 and explore how it has maintained access to higher education in the prison system. It draws from a collection of essays and reflections on prison learning experiences developed by OU academics and former and continuing OU …

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A Green-Gray Path To Global Water Security And Sustainable Infrastructure, Charles J. Vörösmarty, Ben Stewart-Koster, Pamela A. Green, Edward L. Boone, Martina Flörke, Günther Fischer, David A. Wiberg, Stuart E. Bunn, Anik Bhaduri, Peter B. Mcintyre, Claudia Sadoff, Hongxing Liu, David Stifel Sep 2021

A Green-Gray Path To Global Water Security And Sustainable Infrastructure, Charles J. Vörösmarty, Ben Stewart-Koster, Pamela A. Green, Edward L. Boone, Martina Flörke, Günther Fischer, David A. Wiberg, Stuart E. Bunn, Anik Bhaduri, Peter B. Mcintyre, Claudia Sadoff, Hongxing Liu, David Stifel

Advanced Science Research Center

Sustainable development demands reliable water resources, yet traditional water management has broadly failed to avoid environmental degradation and contain infrastructure costs. We explore the global-scale feasibility of combining natural capital with engineering-based (green-gray) approaches to meet water security threats over the 21st century. Threats to water resource systems are projected to rise throughout this period, together with a significant expansion in engineering deployments and progressive loss of natural capital. In many parts of the world, strong path dependencies are projected to arise from the legacy of prior environmental degradation that constrains future water management to a heavy reliance on engineering-based …

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Footboard And Seat Kinetic Changes Associated With Stroke Rate On A Kayak Ergometer, Kayla Bugeya Miller, Joshua A. Goreham, Ryan J. Frayne, Michel Ladouceur Sep 2021

Footboard And Seat Kinetic Changes Associated With Stroke Rate On A Kayak Ergometer, Kayla Bugeya Miller, Joshua A. Goreham, Ryan J. Frayne, Michel Ladouceur

ISBS Proceedings Archive

The purpose of this study was to determine if stroke rate effects anteroposterior, lateral, and vertical forces on the kayak’s footboard and seat. Participants (n=10), with a year or more of competitive kayaking experience, completed four 30-second trials on a kayak ergometer at different stroke rates (60 strokes per minute (spm), 80 spm, 100 spm, and maximum spm). Mean force, impulse, and impulse*stroke rate were identified for the footboards, and seat, separately within each trial (ten single strokes). Interestingly, both anteroposterior and lateral axes kinetic adaptations to stroke rate occurred on the left footboard whereas the right footboard presented only …

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Differences In Torso Kinematics Between Ergometer Cycling And Outdoor Cycling In Triathletes – A Preliminary Study, Stuart Evans Sep 2021

Differences In Torso Kinematics Between Ergometer Cycling And Outdoor Cycling In Triathletes – A Preliminary Study, Stuart Evans

ISBS Proceedings Archive

Many triathletes cycle indoors when impacted by inclement road and weather conditions. In these situations, using a magnetic cycle ergometer (a turbo trainer) provides an alternative training solution. The purpose of this preliminary study was to investigate the biomechanical differences of torso kinematics during cycling on a magnetic turbo trainer compared with overground cycling. Triathletes (n=5) performed a varied 21 minute cycling cadence protocol in their familiar aerodynamic position on a magnetic resistance turbo trainer and a 21 minute overground cycle in their natural training environment whilst wearing a sacrum mounted triaxial accelerometer. Overground cycling significantly impacted anteroposterior torso kinematics …

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Students’ Perception Of A Fully Online Introductory Biomechanics Class, Chengtu Hsieh Sep 2021

Students’ Perception Of A Fully Online Introductory Biomechanics Class, Chengtu Hsieh

ISBS Proceedings Archive

The purpose of this study was to examine students’ perception of a fully online introductory biomechanics class delivered in both synchronous and asynchronous format within the same class. Twenty-five students completed a survey regarding the pedagogical approaches utilised for synchronous and asynchronous meetings. Students reported that the pre-recorded videos and pre-work assignments helped the most for asynchronous learning. During synchronous class time, the most helpful strategy was the thin-pair-share for questions to review the major concepts by answering several applied questions. Students had resistance to work in a small group (2-3 people) to complete assignments asynchronously. Recommendations for delivering biomechanics …

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Coordniation Of Center Of Mass Velocity And Upper Extremity Kinematics During Basketball Shots From Two Distances, Casey Wiens, Jill Mcnitt-Gray Sep 2021

Coordniation Of Center Of Mass Velocity And Upper Extremity Kinematics During Basketball Shots From Two Distances, Casey Wiens, Jill Mcnitt-Gray

ISBS Proceedings Archive

The purpose of this study was to analyze the coordination patterns for individual players when shooting from different distances. Seven experienced basketball players attempted at least 10 shots from 4.19 m and 6.02 m from the hoop. The coordination between the player’s center of mass vertical velocity, upper arm angular velocity, and forearm angular velocity were characterized using phase-plane analysis. Within player, coordination of center of mass vertical velocity and arm kinematics were found to be unique to each individual and comparable between shot distances, particularly during the shot preparation phase. Deviations in coordination patterns between shot distances were attributed …

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Changes In 800 Meter Personal Records For Competitive Female Runners From High School To College, Harper E. Stewart, Nathan Phillips, Jill L. Mcnittgray Sep 2021

Changes In 800 Meter Personal Records For Competitive Female Runners From High School To College, Harper E. Stewart, Nathan Phillips, Jill L. Mcnittgray

ISBS Proceedings Archive

TTo advance understanding of improvements in running performance, changes in personal records (PR) from high school to college were compared. It was hypothesized that females competing in the 800m in college would improve PR times from high school to college, improvements would be different between athletic conferences, and modern statistical methods could differentiate trends in the relationship between high school and college PR. Data from female athletes competing in the 800m from three different athletic conferences (n=73) were gathered from published race results and 79.4% improved by at least 1s with no significant differences between conferences. A positive relationship exists …

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Methodological Considerations For Comparisons Of Upper Extremity Emg Between Individuals With And Without Paraplegia, Anna C. Severin, Gertjan Ettema, Julia K. Baumgart Sep 2021

Methodological Considerations For Comparisons Of Upper Extremity Emg Between Individuals With And Without Paraplegia, Anna C. Severin, Gertjan Ettema, Julia K. Baumgart

ISBS Proceedings Archive

This study compared normalization methods for surface electromyography (sEMG) for comparing individuals with (Para) and without (AB) paraplegia. Participants (Para, n=7, AB, n=11) performed 4 minutes of arm-cycling at several submaximal intensities, and an incremental maximal test to exhaustion, while sEMG of the right biceps brachii was recorded. This study analyzed sEMG at two intensities: rate of perceived exertion (RPE) 13 and at 60 W, with four methods of normalization: non-normalized, against a maximal voluntary contraction (MVIC), against a rate of perceived exertion (RPE) 9, and against the max test. Using submaximal exercise intensity based on RPE or power output …

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Predicting 3d Ground Reaction Force From 2d Video Via Neural Networks In Sidestepping Tasks, Corey Morris, Marion Mundt, Molly Goldacre, Jason Weber, Ajmal Mian, Jacqueline Alderson Sep 2021

Predicting 3d Ground Reaction Force From 2d Video Via Neural Networks In Sidestepping Tasks, Corey Morris, Marion Mundt, Molly Goldacre, Jason Weber, Ajmal Mian, Jacqueline Alderson

ISBS Proceedings Archive

Sports science practitioners often measure ground reaction forces (GRFs) to assess performance, rehabilitation and injury risk. However, recording of GRFs during dynamic tasks has historically been limited to lab settings. This work aims to use neural networks (NN) to predict three-dimensional (3D) GRF via pose estimation keypoints as inputs, determined from 2D video data. Two different NN were trained on a dataset containing 1474 samples from 14 participants and their prediction accuracy compared with ground truth force data. Results for both NN showed correlation coefficients ranging from 0.936 to 0.954 and normalised root mean square errors from 11.05% to 13.11% …

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Influence Of Landing Quadrant On Elliptical Orbit And Its Realtion To Release Parameters Of The Hammer Throw, Annabelle Treacy, Suzanne Konz, Steven Leigh Sep 2021

Influence Of Landing Quadrant On Elliptical Orbit And Its Realtion To Release Parameters Of The Hammer Throw, Annabelle Treacy, Suzanne Konz, Steven Leigh

ISBS Proceedings Archive

Hammer throw official distance is determined by the velocity, angle, and height of the hammer at release, which is regulated by the acceleration arc of the hammer during the turns. This study aimed to examine the influence of position variables describing the elliptical orbit during each turn on the official distance and the release parameters. Competitive hammer throws from 35 athletes (17 men and 18 women) were digitized to obtain 3-D coordinates of the thrower and the hammer throughout the throw. Multiple regression models indicate that hammer positioning during turns 1 and 2 accounts for the greatest variance in the …

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The Roles And Mechanisms Of Linear And Angular Impulse Generation For Both Legs In Baseball Pitching: A Whole-Body Perspective, Jun M. Liu, Christopher Knowlton, Matthew Gauthier, Zach Tropp, Nikhil Verma, Gregory Nicholson, Anthony Romeo, Antonia Zaferiou Sep 2021

The Roles And Mechanisms Of Linear And Angular Impulse Generation For Both Legs In Baseball Pitching: A Whole-Body Perspective, Jun M. Liu, Christopher Knowlton, Matthew Gauthier, Zach Tropp, Nikhil Verma, Gregory Nicholson, Anthony Romeo, Antonia Zaferiou

ISBS Proceedings Archive

This study compared the role of each leg in generating linear and angular impulse during fastball pitches performed by professional pitchers (n=4). Participants were asked to pitch from an instrumented mound and 6-11 successful fastball pitches were used for the analysis. The results indicate that back leg generated forward linear impulse and the front leg generated backward linear impulse for all pitchers. Back leg ground reaction forces generated significantly larger angular impulse about a horizontal axis passing through the body center of mass from the mound to first base than the front leg in three of four pitchers. Additionally, the …

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