Digital Commons Network^™

The Effects Of Ambient Temperature And Lighting Intensity On Wheel-Running Behavior In A Diurnal Rodent, The Nile Grass Rat (Arvicanthis Niloticus), Garrett M. Fogo, Alyssa M. Goodwin, Ohanes S. Khacherian, Brandi J. Ledbetter, Andrew J. Gall

Faculty Publications

Environmental conditions, such as the light-dark cycle and temperature, affect the display of circadian rhythmicity and locomotor activity patterns in mammals. Here, we tested the hypothesis that manipulating these environmental conditions would affect wheel-running activity patterns in a diurnal rodent, the Nile grass rat (Arvicanthis niloticus). Grass rats are diurnal in the field, however, a subset switch from a day-active pattern to a night-active pattern of activity after the introduction of a running wheel. The mechanism of this chronotype switch remains largely unknown. In the present study, grass rats were presented with running wheels in 12:12 light-dark conditions. First, subjects …

The Interior Structure Of Immigration Enforcement, Eisha Jain

Faculty Publications

Deportation dominates immigration policy debates, yet it amounts to a fraction of the work the immigration enforcement system does. This Article maps the interior structure of immigration enforcement, and it seeks to show how attention to its structure offers both practical and conceptual payoffs for contemporary enforcement debates. First, deportation should not be conceptualized as synonymous with immigration enforcement; rather, it is merely the tip of a much larger enforcement pyramid. At the pyramid’s base, immigration enforcement operates through a host of initiatives that build immigration screening into common interactions, such as with police and employers. Second, this enforcement structure …

Ergodicity For The 3d Stochastic Navier-Stokes Equations Perturbed By Lévy Noise, Manil T. Mohan, K. Sakthivel, Sivaguru S. Sritharan

Faculty Publications

In this work we construct a Markov family of martingale solutions for 3D stochastic Navier–Stokes equations (SNSE) perturbed by Lévy noise with periodic boundary conditions. Using the Kolmogorov equations of integrodifferential type associated with the SNSE perturbed by Lévy noise, we construct a transition semigroup and establish the existence of a unique invariant measure. We also show that it is ergodic and strongly mixing.
/="/">Abstract © Wiley.

American Democratic Deficit In Assisted Reproductive Technology Innovation, Myrisha S. Lewis

Faculty Publications

In many areas of innovation, the United States is a leader, but this characterization does not apply to the United States' position in assisted reproductive technology innovation and clinical use. This article uses a political science concept, the idea of the "democratic deficit" to examine the lack of American public discourse on innovations in ART. In doing so, the article focuses on America's missing public consultation in health care innovation. This missing discourse is significant, as political and ethical considerations may impact regulatory decisions. Thus, to the extent that these considerations are influencing the decisions of federal agency employees, namely …

S-Wave Scattering Lengths For The Be 7 +P System From An R-Matrix Analysis, S. N. Paneru, C. R. Brune, R. Giri, R. J. Livesay, U. Greife, J. C. Blackmon, D. W. Bardayan, K. A. Chipps, B. Davids, D. S. Connolly, K. Y. Chae, A. E. Champagne, C. Deibel, K. L. Jones, M. S. Johnson, R. L. Kozub, Z. Ma, C. D. Nesaraja, S. D. Pain, F. Sarazin, J. F. Shriner, D. W. Stracener, M. S. Smith, J. S. Thomas, D. W. Visser, C. Wrede

Faculty Publications

The astrophysical S factor for the radiative proton capture reaction on Be7 (S17) at low energies is affected by the s-wave scattering lengths. We report the measurement of elastic and inelastic scattering cross sections for the Be7+p system in the center-of-mass energy range 0.474-2.740 MeV and center-of-mass angular range 70-150. A radioactive Be7 beam produced at Oak Ridge National Laboratory's (ORNL) Holifield Radioactive Ion Beam Facility was accelerated and bombarded a thin polypropylene (CH2)n target. Scattered ions were detected in the segmented Silicon Detector Array. Using an R-matrix analysis of ORNL and Louvain-la-Neuve cross-section data, the s-wave scattering lengths for …

Effects Of An 8-Week Pelvic Core Stability And Nutrition Community Programme On Maternal Health Outcomes, Gretchen Elizabeth Krivak, Lori Maria Walton, Veena Raigangar, Mini Sara Abraham, Cherisse Buddy, Magaly Hernandez, Rose Caceras

Faculty Publications

Introduction

Women, during the antenatal and post‐partum period, report pelvic, low back pain, stress and urge urinary incontinence, colorectal dysfunction, and other co‐morbidities that negatively affect health‐related quality of life. Exercise and nutrition are important considerations for improving maternal health in this period.

Purpose

The purpose of this study was to examine the effects of a community‐driven nutrition and exercise programme focused on pelvic floor and core stability, healthy nutrition, and breastfeeding counselling over an 8‐week period on pelvic floor and urinary distress (UDI), prolapse and colorectal distress for antenatal and post‐partum women with limited access to health care, and …

Generic Absence Of Strong Singularities And Geodesic Completeness In Modified Loop Quantum Cosmologies, Sahil Saini, Parampreet Singh

Faculty Publications

Different regularizations of the Hamiltonian constraint in loop quantum cosmology (LQC) yield modified loop quantum cosmologies, namely mLQC-I and mLQC-II, which lead to qualitatively different Planck scale physics. We perform a comprehensive analysis of resolution of various singularities in these modified loop cosmologies using effective spacetime description and compare with earlier results in standard LQC. We show that the volume remains non-zero and finite in finite time evolution for all considered loop cosmological models. Interestingly, even though expansion scalar and energy density are bounded due to quantum geometry, curvature invariants can still potentially diverge due to pressure singularities at a …

Generalizing Metallocene Mechanochemistry To Ruthenocene Mechanophores, Ye Sha, Yudi Zhang, Enhua Xu, C Wayne Mcalister, Tianyu Zhu, Stephen L. Craig, Chuanbing Tang

Faculty Publications

Recent reports have shown that ferrocene displays an unexpected combination of force-free stability and mechanochemical activity, as it acts as the preferred site of chain scission along the backbone of highly extended polymer chains. This observation raises the tantalizing question as to whether similar mechanochemical activity might be present in other metallocenes, and, if so, what features of metallocenes dictate their relative ability to act as mechanophores. In this work, we elucidate polymerization methodologies towards main-chain ruthenocene-based polymers and explore the mechanochemistry of ruthenocene. We find that ruthenocene, in analogy to ferrocene, acts as a highly selective site of main …

Short-Term Effect Of Simulated Salt Marsh Restoration By Sand-Amendment On Sediment Bacterial Communities, François Thomas, James T. Morris, Cathleen Wigand, Stefan M. Sievert

Faculty Publications

Coastal climate adaptation strategies are needed to build salt marsh resiliency and maintain critical ecosystem services in response to impacts caused by climate change. Although resident microbial communities perform crucial biogeochemical cycles for salt marsh functioning, their response to restoration practices is still understudied. One promising restoration strategy is the placement of sand or sediment onto the marsh platform to increase marsh resiliency. A previous study examined the above- and below-ground structure, soil carbon dioxide emissions, and pore water constituents in Spartina alterniflora-vegetated natural marsh sediments and sand-amended sediments at varying inundation regimes. Here, we analyzed samples from the …

Head Impact Exposure Comparison Between Male And Female Amateur Rugby League Participants Measured With An Instrumented Patch, Mark Hecimovich, D. A. King, P. A. Hume, C. Cummins, T. Clark, C. Gissane

Faculty Publications

Background: Epidemiological studies report that females experience greater rates of concussion when compared with males. Biomechanical factors may result in greater post-impact head velocities and accelerations for a given force for females when compared with males. Purpose: To quantify the magnitude, frequency, duration and distribution of impacts to the head and body in rugby league match activities for females versus males. Design: Prospective descriptive epidemiological study. Methods: 21 female and 35 male amateur rugby league players wore wireless impact measuring devices (X2Biosystems; xPatch) behind their right ear over the mastoid process during match participation across a single season. All impact …

Short-Term Effect Of Simulated Salt Marsh Restoration By Sand-Amendment On Sediment Bacterial Communities, François Thomas, James T. Morris, Cathleen Wigand, Stefan M. Sievert

Faculty Publications

Coastal climate adaptation strategies are needed to build salt marsh resiliency and maintain critical ecosystem services in response to impacts caused by climate change. Although resident microbial communities perform crucial biogeochemical cycles for salt marsh functioning, their response to restoration practices is still understudied. One promising restoration strategy is the placement of sand or sediment onto the marsh platform to increase marsh resiliency. A previous study examined the above- and below-ground structure, soil carbon dioxide emissions, and pore water constituents in Spartina alterniflora-vegetated natural marsh sediments and sand-amended sediments at varying inundation regimes. Here, we analyzed samples from the …

Distribution Of Bit Patterns In Binary Sequence Generated Over Sub Extension Field, Md. Arshad Ali, Yuta Kodera, Yasuyuki Nogami, Satoshi Uehara, Robert Morelos-Zaragoza

Faculty Publications

The distribution of bit patterns is an important measure to check the randomness of a sequence. The authors of this paper observed this crucial property in a binary sequence which generated by using a primitive polynomial, trace function, and Legendre symbol defined over the sub extension field. The authors create a new dimension in the sequence generation research area by considering the sub extension field, whereas all our previous works are focused in the prime field. In terms of the distribution of bit patterns property, this research work has notable outcomes more specifically the binary sequence (defined over the sub …

Low Molecular Weight Fluorescent Probes (Lmfps) To Detect The Group 12 Metal Triad, Ashley D. Johnson, Rose M. Curtis, Karl J. Wallace

Faculty Publications

Fluorescence sensing, of d-block elements such as Cu²⁺, Fe³⁺, Fe²⁺, Cd²⁺, Hg²⁺, and Zn²⁺ has significantly increased since the beginning of the 21st century. These particular metal ions play essential roles in biological, industrial, and environmental applications, therefore, there has been a drive to measure, detect, and remediate these metal ions. We have chosen to highlight the low molecular weight fluorescent probes (LMFPs) that undergo an optical response upon coordination with the group 12 triad (Zn²⁺, Cd²⁺, and Hg²⁺), as these metals have …

How Do Neighbourhood Definitions Influence The Associations Between Built Environment And Physical Activity?, Suzanne Mavoa, Nasser Bagheri, Mohammad Javad Koohsari, Andrew T. Kaczynski, Karen E. Lamb, Koichiro Oka, David O'Sullivan, Karen Witten

Faculty Publications

Researchers investigating relationships between the neighbourhood environment and health first need to decide on the spatial extent of the neighbourhood they are interested in. This decision is an important and ongoing methodological challenge since different methods of defining and delineating neighbourhood boundaries can produce different results. This paper explores this issue in the context of a New Zealand-based study of the relationship between the built environment and multiple measures of physical activity. Geographic information systems were used to measure three built environment attributes—dwelling density, street connectivity, and neighbourhood destination accessibility—using seven different neighbourhood definitions (three administrative unit boundaries, and 500, …

Von Neumann Stability Of Modified Loop Quantum Cosmologies, Sahil Saini, Parampreet Singh

Faculty Publications

von Neumann stability analysis of quantum difference equations in loop quantized spacetimes has often proved useful to understand the viability of quantizations and whether a general relativistic description is recovered at small spacetime curvatures. We use this technique to analyze the infrared behavior of the quantum Hamiltonian constraint in recently explored modifications of loop quantum cosmology: mLQC-I and mLQC-II, for the spatially flat FLRW model. We investigate the behavior for the μo scheme, where the minimum area of loops in the quantization procedure does not take physical metric in to account, and the μ scheme where quantization procedure uses a …

There's No Place Like Home: The Associations Between Residential Attributes And Family Functioning, Carly M. Thornock, Larry J. Nelson, Chris L. Porter, Cortney A. Evans-Stout

Faculty Publications

The purpose of this study was to examine the ways in which actual (e.g., density) and perceived (e.g., crowding and distance) elements of the spatial home environment act as predictors of family functioning. Data were gathered from 164 families whose child was attending a university's preschool/kindergarten facility in a mid-sized community in the Western United States. Structural equation modeling (SEM, AMOS 19.0) was employed to examine the strength of the relations within the model. Results showed that though actual elements of the home (i.e., density) affect family functioning outcomes, perceptions of the home environment (e.g., crowding and distance) were especially …

Periodic Anderson Model With Holstein Phonons For The Description Of The Cerium Volume Collapse, Enzhi Li, Shuxiang Yang, Peng Zhang, Ka Ming Tam, Mark Jarrell, Juana Moreno

Faculty Publications

Recent experiments have suggested that the electron-phonon coupling may play an important role in the γ→α volume collapse transition in cerium. A minimal model for the description of such a transition is the periodic Anderson model. In order to better understand the effect of the electron-phonon interaction on the volume collapse transition, we study the periodic Anderson model with coupling between Holstein phonons and electrons in the conduction band. We find that the electron-phonon coupling enhances the volume collapse, which is consistent with experiments in cerium. While we start with the Kondo volume collapse scenario in mind, our results capture …

Physical Education Teacher Education (Pete) Majors' Perceptions And Opinions Of Appropriate Instructional Practices: A Qualitative Approach, David C. Barney, Liana Davis

Faculty Publications

Physical education (PE) teachers are responsible for helping students learn in their classes. Unfortunately, many students have been exposed to games and activities that were inappropriate, thus negatively affecting their learning in PE class. Inappropriate instructional practices have been a common occurrence for many students. One group that can help curb the inclusion of inappropriate instructional practices are Physical Education Teacher Education (PETE) majors. This study investigated PETE majors’ beliefs of certain instructional practices that have been implemented in PE games and activities. Many of the instructional practices were inappropriate. The PETE majors’ felt that dodge ball, relay games, and …

Lightcpg: A Multi-View Cpg Sites Detection On Single-Cell Whole Genome Sequence Data, Limin Jiang, Chongqing Wang, Jijun Tang, Fei Gu

Faculty Publications

Background DNA methylation plays an important role in multiple biological processes that are closely related to human health. The study of DNA methylation can provide an insight into the mechanism behind human health and can also have a positive effect on the assessment of human health status. However, the available sequencing technology is limited by incomplete CpG coverage. Therefore, it is crucial to discover an efficient and convenient method capable of distinguishing between the states of CpG sites. Previous studies focused on identifying methylation states of the CpG sites in single cell, which only evaluated sequence information or structural information. …

Star Cluster Catalogues For The Legus Dwarf Galaxies, D. O. Cook, J. C. Lee, A. Adamo, H. Kim, R. Chandar, B. C. Whitmore, A. Mok, J. E. Ryon, D. A. Dale, D. Calzetti, J. E. Andrews, A. Aloisi, G. Ashworth, S. N. Bright, T. M. Brown, C. Christian, M. Cignoni, G. C. Clayton, R. Da Silva, S. E. De Mink, C. L. Dobbs, B. G. Elmegreen, D. M. Elmegreen, A. S. Evans, M. Fumagalli, J. S. Gallagher, D. A. Gouliermis, K. Grasha, E. K. Grebel, A. Herrero, D. A. Hunter, E. I. Jensen, K. E. Johnson

Faculty Publications

We present the star cluster catalogues for 17 dwarf and irregular galaxies in the HST Treasury Program 'Legacy ExtraGalactic UV Survey' (LEGUS). Cluster identification and photometry in this sub-sample are similar to that of the entire LEGUS sample, but special methods were developed to provide robust catalogues with accurate fluxes due to low cluster statistics. The colours and ages are largely consistent for two widely used aperture corrections, but a significant fraction of the clusters are more compact than the average training cluster. However, the ensemble luminosity, mass, and age distributions are consistent suggesting that the systematics between the two …

Low-Latency Gravitational-Wave Alerts For Multimessenger Astronomy During The Second Advanced Ligo And Virgo Observing Run, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arène, N. Arnaud

Faculty Publications

Advanced LIGO's second observing run (O2), conducted from 2016 November 30 to 2017 August 25, combined with Advanced Virgo's first observations in 2017 August, witnessed the birth of gravitational-wave multimessenger astronomy. The first ever gravitational-wave detection from the coalescence of two neutron stars, GW170817, and its gamma-ray counterpart, GRB 170817A, led to an electromagnetic follow-up of the event at an unprecedented scale. Several teams from across the world searched for EM/neutrino counterparts to GW170817, paving the way for the discovery of optical, X-ray, and radio counterparts. In this article, we describe the online identification of gravitational-wave transients and the distribution …

Search For Gravitational Waves From A Long-Lived Remnant Of The Binary Neutron Star Merger Gw170817, B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya, C. Affeldt, B. Agarwal, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, B. Allen, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya

Faculty Publications

One unanswered question about the binary neutron star coalescence GW170817 is the nature of its post-merger remnant. A previous search for post-merger gravitational waves targeted high-frequency signals from a possible neutron star remnant with a maximum signal duration of 500 s. Here, we revisit the neutron star remnant scenario and focus on longer signal durations, up until the end of the second Advanced LIGO-Virgo observing run, which was 8.5 days after the coalescence of GW170817. The main physical scenario for this emission is the power-law spindown of a massive magnetar-like remnant. We use four independent search algorithms with varying degrees …

Searches For Continuous Gravitational Waves From 15 Supernova Remnants And Fomalhaut B With Advanced Ligo, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, M. Arene, N. Arnaud

Faculty Publications

We describe directed searches for continuous gravitational waves (GWs) from 16 well-localized candidate neutron stars, assuming none of the stars has a binary companion. The searches were directed toward 15 supernova remnants and Fomalhaut b, a directly imaged extrasolar planet candidate that has been suggested to be a nearby old neutron star. Each search covered a broad band of frequencies and first and second time derivatives. After coherently integrating spans of data from the first Advanced LIGO observing run of 3.5-53.7 days per search, applying data-based vetoes, and discounting known instrumental artifacts, we found no astrophysical signals. We set upper …

Synthetic Spectra Of Pair-Instability Supernovae In 3d, E. Chatzopoulos, Matthew S. Gilmer, Ryan T. Wollaeger, Carla Fröhlich, Wesley P. Even

Faculty Publications

Pair-instability supernovae (PISNe) may signal the deaths of extremely massive stars in the local Universe or massive primordial stars after the end of the Cosmic Dark Ages. Hydrodynamic simulations of these explosions, performed in 1D, 2D, and 3D geometry, have revealed the strong dependence of mixing in the PISN ejecta on dimensionality. This chemical rearrangement is mainly driven by Rayleigh-Taylor instabilities that start to grow shortly after the collapse of the carbon-oxygen core. We investigate the effects of such mixing on the spectroscopic evolution of PISNe by post-processing explosion profiles with the radiation diffusion-equilibrium code SNEC and the implicit Monte …

Searches For Continuous Gravitational Waves From 15 Supernova Remnants And Fomalhaut B With Advanced Ligo, B. P. Abbott, R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos, K. Agatsuma, N. Aggarwal, O. D. Aguiar, L. Aiello, A. Ain, P. Ajith, G. Allen, A. Allocca, M. A. Aloy, P. A. Altin, A. Amato, A. Ananyeva, S. B. Anderson, W. G. Anderson, S. V. Angelova, S. Antier, S. Appert, K. Arai, M. C. Araya, J. S. Areeda, Tiffany Z. Summerscales

Faculty Publications

© 2019. The American Astronomical Society. All rights reserved. We describe directed searches for continuous gravitational waves (GWs) from 16 well-localized candidate neutron stars, assuming none of the stars has a binary companion. The searches were directed toward 15 supernova remnants and Fomalhaut b, a directly imaged extrasolar planet candidate that has been suggested to be a nearby old neutron star. Each search covered a broad band of frequencies and first and second time derivatives. After coherently integrating spans of data from the first Advanced LIGO observing run of 3.5-53.7 days per search, applying data-based vetoes, and discounting known instrumental …

Association Between Inflammatory Potential Of Diet And Bone-Mineral Density In Korean Postmenopausal Women: Data From Fourth And Fifth Korea National Health And Nutrition Examination Surveys, Woori Na, Susan Park, Nitin Shivappa, James F. Thrasher, Mi Kyung Kim, Cheongmin Sohn

Faculty Publications

Post menopause is considered a critical period for bone-mass loss. Impaired bone metabolism during this phase can increase the risk of fractures in old age. Inflammation is a risk factor for bone health, and diet is a potential source of inflammation. However, few studies have examined the association between the dietary inflammatory index (DII^®) and bone-mineral density (BMD) in postmenopausal women in Korea. The objective of this study was to determine, by means of a Korean cross-sectional investigation, whether higher DII scores are associated with decreased BMD in postmenopausal women. To that end, the raw data from the …

Autographic And Allographic Imitation: Revisiting Counterfeit In Linguistic And Musical Arts, Jeremy Orosz

Faculty Publications

Imitation within sonic arts, linguistic, musical, or otherwise, broadly defined, is a heterogeneous set of practices ranging from comical impersonation to outright counterfeit or forgery. This paper provides a taxonomy of imitation and mimicry within both language and music, dividing each into two respective categories, autographic imitation and allographic imitation, the terms for which are repurposed from Nelson Goodman’s Languages of Art.

Stimulation Of Heat Shock Protein 90 Chaperone Function Through Binding Of A Novobiocin Analog Ku-32, Bhaskar K. Chatterjee, Abhilash Jayaraj, Vinay Kumar, Brian Blagg, Rachel E. Davis, B Jayaram, Shashank Deep, Tapan K. Chaudhuri

Faculty Publications

Heat shock protein 90 (Hsp90) is a eukaryotic chaperone responsible for the folding and functional activation of numerous client proteins, many of which are oncoproteins. Thus, Hsp90 inhibition has been intensely pursued, resulting in the development of many potential Hsp90 inhibitors, not all of which are well-characterized. Hsp90 inhibitors not only abrogate its chaperone functions, but also could help us gain insight into the structure-function relationship of this chaperone. Here, using biochemical and cell-based assays along with isothermal titration calorimetry, we investigate KU-32, a derivative of the Hsp90 inhibitor novobiocin (NB), for its ability to modulate Hsp90 chaperone function. Although …

Directed Pore Uptake And Phase Separation Of Surfactant Solutions Under Confinement, Yao Wu, Yingzhen Ma, Lilin He, Gernot Rother, William A. Shelton, Bhuvnesh Bharti

Faculty Publications

The ability of a porous material to uptake and release molecules is determined by the thermodynamic state of preadsorbed surfactants in pore space. However, the effect of spatial confinement on the thermodynamic state of the surfactants is poorly understood. In this study, we use a combination of small-angle neutron scattering experiments and all-atom molecular dynamics simulations to develop a better understanding of the effect of confinement on self-assembly and temperature-induced liquid-liquid phase separation of surfactant solutions. Here, we study the demixing of a model nonionic surfactant triethyleneglycol monohexyl ether (C6E3) in tubular nanopores of the SBA-15 silica material (pore diameter …

The Effects Of Teacrine® And Caffeine On Endurance And Cognitive Performance During A Simulated Match In High-Level Soccer Players, Marissa L. Bello, Alan J. Walker, Bridget A. Mcfadden, David J. Sanders, Shawn M. Arent Ph.D., Cscs*D, Fissn, Facsm, Fnak

Faculty Publications

Background: Theacrine (1,3,7,9-tetramethyluric-acid) is a pure alkaloid with a similar structure to caffeine and acts comparably as an adenosine receptor antagonist. Early studies have shown non-habituating effects, including increases in energy and focus in response to Teacrine®, the compound containing pure theacrine. The purpose of this study was to determine and compare the effects of Teacrine® and caffeine on cognitive performance and time-to-exhaustion during a simulated soccer game in high-level male and female athletes. Methods: Male and female soccer players (N = 24; M Age = 20.96 ± 2.05y, M MaleVO2max = 55.31 ± 3.39 mL/O 2 /kg, M FemaleVO2max …