Texas Tech University


Researcher:     Jarrod Blinch, Ph.D.

Title:                   Assistant Professor in Motor Behavior

Laboratory:     Room 101, Motor Behavior Laboratory

Personal Statement

The motor behavior lab studies human movement from cognitive psychology and neuroscience perspectives. Motor behavior research, broadly, seeks to understand how the neuromuscular system accomplishes coordinated movements. The lab is an independent, research-only lab that is currently composed of principal investigator Dr. Blinch and students in Kinesiology. We are currently doing research in four interrelated areas of motor behavior; the broad research questions are listed below.

  • How can difficult movements be made easy by changing how we think about the task?
  • How is a task represented in the mind when it is done by one person versus shared by two people?
  • How does one decided which movement to make when there are multiple choices?
  • Do eye movements differ with an internal or external focus of attention?

Application of Expertise to Health Disparity Research

Understand how we make movements could help treat people with movement disorders. Examples of the applications of motor control to movement disorders include stroke, autism spectrum disorder, and Parkinson's disease.

Laboratory Equipment

The principle equipment in the motor behavior lab is a motion capture system that allows us to precisely track the intricate movements of the hands and arms. It is a research-grade version of the technology used to capture the movements of actors for film or video games, like Gollum in Lord of the Rings.

Researcher:     Emily Dhurandhar, Ph.D.

Title:                   Assistant Professor in Kinesiology

Laboratory:     Room 120, Nutrition Laboratory

Personal Statement

Dr. Dhurandhar conducts research on the psychosocial and dietary factors that influence energy balance and weight management in humans with obesity.  She currently directs the Nutrition Laboratory where she has been an independent investigator since 2016.  Her background includes randomized clinical nutrition trials, public health nutrition research, and molecular diabetes and obesity research.  Dr. Dhurandhar has been funded by the National Institute of Diabetes, Digestive and Kidney Diseases (postdoctoral fellowship, 2011-2013), the International Life Sciences Institute, and the American Egg Board.  Her laboratory focuses understanding the i.) impact of social status and discrimination on eating behavior and weight gain, ii.) randomized trials to inform public policy and interventions in obesity, iii.)  obesity education, iv.) the impact of protein on body composition and weight control, and v.) application of new technologies to enable those with severe obesity to exercise.

Application of Expertise to Health Disparity Research

Dr. Dhurandhar's work on social status and eating behavior is focused on understanding the disparities in diabetes, obesity and cardiovascular disease among social hierarchies. Her long-term goal is for this work to be applicable to interventions and policy programs to reduce socioeconomic and racial disparities in these chronic health issues. She also has the training and skills to quantify the impact of public policies on disparities in obesity. Finally, her work in technologies for those with severe obesity, and in obesity education, also has the potential to reduce health disparities across weight categories.

Laboratory Skills and Capabilities

  • Measure body composition using Dual X-Ray Absorptiometry and Bioimpedence Analysis.
  • Measure resting metabolic rate using indirect calorimetry.
  • Randomized clinical trials in nutrition and exercise.
  • Controlled feeding studies.
  • Measurement of food intake amount, pace, and food choice in a laboratory setting.
  • Measurement of weight bias and discrimination.
  • Obesity education for medical professionals and obesity interventions.
  • Accelerometer-based assessment of ambulatory activity (peak cadence, total steps) or time spent in activity of different intensities (sedentary, light, moderate, vigorous).
  • Weight loss Intensive Behavioral Therapy.
  • Measurement of free-living food intake using the Remote Food Photography Method.

Laboratory Equipment

  • Seating and tables to feed up to 10 people at once.
  • Refrigerator, freezer, and cabinet space to store food.
  • Counter space and kitchen equipment for basic food preparation.
  • Anti-gravity Treadmill (Alter-G, M320)
  • Digital scale for weighed food measurements

Nadeeja Wijayatunga MBBS, MPhil, PhD

Title: Postdoctoral Research Associate

Room 120, Nutrition LaboratoryNadeeja Wijayatunga

Personal Statement

Dr. Nadeeja Wijayatunga is working with Dr. Emily Dhurandhar as a Postdoctoral Research Associate in the Nutrition Lab since May 2017. She received her PhD from the Department of Nutritional Sciences at Texas Tech University in Spring 2017, and her doctoral work was on changes in inflammation and metabolism post bariatric surgery and adipose depot differences following a high fat diet. She obtained her Masters in Philosophy (MPhil) from University of Sri Jayewardenepura, Sri Lanka. Nadeeja is a registered physician (MBBS) in Sri Lanka since 2006, and a former Lecturer in Department of Biochemistry, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka. Her areas of research during the postdoctoral period include behavioral studies to increase physical activity in those with obesity, dietary factors that influence body composition and energy expenditure, and reducing cardiovascular risk in subjects with normal weight obesity.

Researcher:     Arturo Figueroa-Galvez, M.D., Ph.D.

Title:                  Professor of Exercise Physiology

Laboratory:     Room 122, Vascular Health Laboratory

Personal Statement

Dr. Figueroa has 22 years of experience conducting applied exercise physiology studies in humans.  He has been an independent investigator since 2004 and will direct the Vascular Health Laboratory.  His background includes the study of arterial function and muscle fitness (mass, strength, and performance) in middle-aged and older adults with obesity, hypertension, and type 2 diabetes.  Dr. Figueroa has been funded by the National Watermelon Promotional Board (2008-2009 and 2010-2011), Nutrisystem Inc. (2010-2011), U.S. Highbush Blueberry Council (2011-2013), U.S. California Strawberry Commission (2013-2015), Cherry Research Committee (2014-2016), and U.S. Apple Association (2014-2016). The relative risk for obesity, hypertension, and sarcopenia (major factors for cardiovascular diseases and metabolic abnormalities) is higher in women. Therefore, his past and current research has focused on the impact of strength training and nutritional supplementation on the age- and obesity-related cardiovascular and metabolic disturbances in women.

Application of Expertise to Health Disparity Research

Recent evidence suggests that greater arterial dysfunction and metabolic disturbances in Hispanics and African-Americans may explain the increased cardiovascular risk in these minority groups compared to Whites. Dr. Figueroa will extend his research to examine arterial function and muscular fitness in Hispanics, especially in women, with high risk for developing cardiovascular diseases and type 2 diabetes. Dr. Figueroa's research on the vascular and body composition benefits of strength training and nutritional supplementations will fit well in the proposed Ph.D. program focused on health disparities. He plans to develop collaborations with researchers in the department of Kinesiology & Sport Management, Nutritional Sciences, and the TTU Health Sciences to investigate effective exercise and dietary interventions for improving vascular function and muscular fitness in clinical populations of interest.

Laboratory Skills and Capabilities

  • Pulse wave analysis using SphygmoCor:
    • measures central (aortic) blood pressures
    • measures of pressure wave reflection
  • Arterial stiffness and pressure wave reflection using arterial tonometry:
    • Measures of central (aortic) pulse wave velocity.
    • Measures of peripheral pulse wave velocity (arm and leg).
    • Measures of central (carotid) blood pressures and wave reflections.
  • Cardiac autonomic regulation using finometer:
    • Measures of heart rate variability
    • Measures of stroke volume and peripheral vascular resistance
    • Measures of cardiovagal baroreflex sensitivity (sequence method)  
  • Measurements of cardiovascular function during laboratory tests that increase sympathetic activation:
    • Post-exercise muscle ischemia (metaboreflex)
    • Cold pressor
    • Assessment of endothelial-dependent vasodilatory capacity by measuring arterial flow-mediated dilation using Doppler ultrasound.
    • Measurements of muscle blood flow at rest and during/after exercise using Doppler ultrasound
    • Assessment of peripheral microvascular function and skeletal muscle oxygenation using near infrared spectroscopy (NIRS) at rest and during exercise.
    • Assessment of lean mass and fat mass using Dual-Energy X-ray Absorptiometry (DEXA) and Bioelectrical Impedance Analyses (BIA)

Laboratory Equipment (planned for my first year)

  • SphygmoCor XCEL Pulse Wave Analysis System (AtCor Medical)
  • Complior Analyse PWV and central (carotid) pressure analysis (Alam Medical)
  • Finometer MIDI beat-by-beat blood pressure and hemodynamics system (Finapress Medical Systems)
  • Doppler Ultrasound (Aloka, ProSound)
  • Brachial and Carotid Artery Analyzer (Medical Imaging Applications)
  • Near Infrared Spectroscopy Device (Artinis, PortaMon MkII)
  • Rapid Cuff Inflation Pump (Hokanson E20)

Researcher:     Joaquin U. Gonzales, Ph.D.

Title:                   Associate Professor in Exercise Physiology

Laboratory:     Room 119, Vascular Aging Laboratory

Personal Statement

Dr. Gonzales has 16 years of experience conducting applied physiology studies in humans.  He currently directs the Vascular Assessment Laboratory where he has been an independent investigator since 2010.  His background includes the study of sex differences in skeletal muscle fatigue and vascular function during exercise.  Dr. Gonzales has been funded by the National, Heart, Lung and Blood Institute (pre-doctoral award, 2006-2008), the National Institute on Aging (post-doctoral award, 2008-2010), and the American Heart Association (2015-2017).  His current research focus is understanding the i) impact of age-related vascular dysfunction on physical function, and ii) interventional strategies to improve vascular function in older adults.

Laboratory Skills and Capabilities

  • Measure ambulatory (24-hr) blood pressure (brachial and aortic)
  • Measure blood flow, arterial elasticity or stiffness at rest or during exercise using Doppler ultrasound
  • Assess endothelial-dependent vasodilatory capacity by measuring arterial flow-mediated dilation using Doppler ultrasound
  • Assess peripheral microvascular function using strain-gauge plethysmography
  • Pulse wave analysis using SphygmoCor technology*
    • measures pulse wave velocity (gold standard estimate of arterial stiffness)
    • measures local and central (aortic) blood pressures
    • estimates left ventricular diastolic function
  • Near infrared spectroscopty (NIRS) measure of cerebral or skeletal muscle oxygenation
  • Gait performance testing (can measure speed, stride length, cadence, variability)
  • Accelerometer-based assessment of ambulatory activity (peak cadence, total steps) or time spent in activity of different intensities (sedentary, light, moderate, vigorous)

Laboratory Equipment

  • Ambulatory Blood Pressure Units (SunTech, Oscar2 w/SphygmoCor Inside)
  • Beat-by-Beat Blood Pressure System (CNAP 500at)
  • Brachial and Carotid Artery Analyzer (Medical Imaging Applications)
  • Doppler Ultrasound (GE Healthcare, Vivid 7)
  • GT3XE-Plus Triaxial Activity Monitors (ActiGraph)
  • Mobility Lab Gait & Balance System (Dynavision)
  • Near Infrared Spectroscopy System (Artinis, PortaLite)
  • PowerLab Acquisition System (8SP model)
  • Rapid Cuff Inflation System (Hokanson E20)
  • SphygmoCor PVx system (AtCor Medical)
  • Strain-Gauge Plethysmography System (Hokanson EC6)

Researcher:     John R. Harry, Ph.D., CSCS

Title:                   Assistant Professor of Biomechanics

Laboratory:     Room 103, Human Performance Laboratory

Personal Statement

Dr. Harry specializes in the biomechanical evaluation of human movement. He has specific expertise in the assessment of lower extremity movement execution and control during ambulatory tasks in both healthy and neurologically impaired populations. His previous work has emphasized the identification of unique physical presentations during locomotion in children and adolescents with Autism Spectrum Disorder (ASD). He has obtained both internal and external funding awards to support the pursuit of his research agenda. In Dr. Harry's independent research-only laboratory, he will collaborate with departmental, regional, and national colleagues to test various low-cost, mobile, and feasible treatment interventions aimed at addressing the physical consequences of ASD.

Applications of Expertise to Health Disparity Research

Dr. Harry's testing of various treatment interventions to mitigate physical consequences of ASD is aimed at directly addressing one of the largest health disparities associated with the disorder, specifically the lack of access to adequate resources and therapeutic treatments due the generalized locations of qualified specialists. Although motor dysfunction has yet to be formally included in the diagnostic and treatment criteria for ASD, Dr. Harry and his colleagues consider movement dysfunction to be a core feature of the disorder underpinning the classic social and behavioral symptoms. Identifying beneficial interventions to treat movement dysfunction could improve quality of life in individuals with ASD and their families while also providing easy-to-use, effective, and comprehensive treatments for ASD that do not require frequent and costly visits to generally inaccessible specialists. As such, the projects to be conducted in Dr. Harry's laboratory will have clinical significance and provide direct applications to comprehensive intervention therapies in individuals with ASD.

Laboratory Skills and Capabilities

  • Recording patterns of human movement using two dimensional and three-dimensional motion capture techniques (clinical gait analyses, athletic performance testing, etc.)
  • Measurement of forces applied by humans to produce, change, and/or stop movement under various environmental constraints and/or following specific interventions
  • Monitor changes in neurological activation (electromyography; EMG) relative to the control of voluntary human movement
  • Testing of various movement ability interventions and resistance training protocols for the purpose of improving human function during ambulatory movements

Laboratory Equipment

Note: Items listed are currently in the lab or are in the process of being acquired

  • 10-camera three-dimensional motion capture system (Vicon Motion Systems, Ltd.)
  • Four three-dimensional force platforms (Advanced Mechanical Technology, Inc., Bertec Corporation)
  • Force-instrumented staircase (Advanced Mechanical Technology, Inc.)
  • 16-channel wireless electromyography system (Delsys, Inc.)
  • Two Non-invasive brain stimulators (neuroConn DC-Stimulator Plus)
  • Multiple free-weight and machine-based resistance training stations equipped with necessary accessories and customizable exercise selections (Elitefts; Power Systems, LLC; Again Faster®; York Barbell USA)

Researcher:     Youngdeok Kim, Ph.D.

Title:                   Assistant Professor in Epidemiology and Health

Laboratory:     Room 112, Physical Activity & Health Promotion Laboratory

Personal Statement

Dr. Kim has an educational background in quantitative methods (i.e., Kinesmetrics), with specific training and expertise in applied statistics and advanced measurement theory from both Seoul National University, South Korea, and Middle Tennessee State University, TN. Based on a strong quantitative background, he has developed research interests in the area of physical activity epidemiology to better understand the dynamic nature of physical activity and its impact on health in diverse population groups. By following the behavioral epidemiological framework (Sallis, 1998), the scope of his research has been broad and largely cross-disciplinary, which includes:

  • Examining the links between physical activity and chronic health conditions (i.e., obesity, cardiovascular disease, and sleep health)
  • Validating and refining methods for quantifying outcome variables of physical activity
  • Identifying contextual factors that influence physical activity
  • Developing and evaluating intervention strategies to promote physical activity

Dr. Kim has received several prestigious awards including:

  • 2013 Graduate Writing Award from the American Kinesiology Association (AKA)
  • 2014 National Doctoral Scholar Award from AKA

and his research has been funded by:

  • Paffenbarger-Blair Funds for Epidemiological Research on Physical Activity from the American College of Sports Medicine (2015 - 2016)
  • Early Career Investigator Research Grant from the Society of Health and Physical Educators (2015 – 2016)International Research Grant from the Sultan Qaboos Cultural Center in Oman (2017-2018)

Application of Expertise to Health Disparity Research

Dr. Kim has conducted several research addressing health disparities in underserved population groups including people with disabilities and minority children. At Texas Tech University, he has been involved in several research projects conducted as part of the East Lubbock Promise Neighborhood project, a USDE-funded project aiming to reduce health disparities in historically disadvantaged neighborhood in the city of Lubbock, TX. Recently, he has started a research collaboration with the Garrison Institute of Aging at Texas Tech University Health Science Center, with a goal to improve the health of community-dwelling older adults in rural areas of Northwest Texas.

Laboratory Skills and Capabilities & Equipment

  • Pedometers & heart rate monitoring devices – Quantifying free-living activity levels
  • Accelerometer – Quantifying free-living activity levels as well sleep health parameters

Researcher:     Jacalyn J. Robert-McComb, Ph.D., FACSM

Title:                   Professor in Exercise Physiology

Laboratory:     Rooms 113 & 114, Exercise Intervention & Biofeedback Laboratories

Personal Statement

I have two independent research labs and a shared phlebotomy and chemistry lab which are utilized for my research studies.  My research has focused on the stress response (serum cortisol, heart rate variability, skin conductance, electromyography) to a standardized psychological stressor and effective ways to cope with the stressor.  We have assessed a healthy population, specifically women (although I have assessed women with high blood pressure and anxiety).  My train of thought was that we needed to show that both the stressor and the interventions worked in a healthy population and then we could apply the training to a diseased population.

The stressors that I have compared for similar physiological responses and as possible pre-post stressors are the Trier Social Stress Test and the Beilock Stressor. The on-going development of a paradigm would include a psychological pre-test, intervention, and a similar psychological posttest with the same arousal level as the pre-test.  We have also used the International Affective Picture System. The International Affective Picture System (IAPS) provides normative ratings of emotion (pleasure, arousal, dominance) for a set of color photographs.

The interventions have included biofeedback, yoga, breathing exercises, and mindfulness movement.  For my next study, I would like to use the intervention - acute high intensity interval training -specifically Tabata on a spin bike; and the effect of this acute exercise on the emotional and physiological response to IAPS picture viewing.

Application of Expertise to Health Disparity Research

My research can be applied to many clinical populations specifically individuals with heart disease or diabetes who have the inability to effectively cope with stress in their lives.  The result of chronic uncontrolled stress leads to the development of risk factors such as high blood pressure, high blood sugar, and narrowing of the arteries through plaque buildup caused from the damage of the endothelium from the vascular pressure. In West Texas, we have a large Hispanic population who experience high blood pressure, diabetes, and have a large waist circumference (greater than 40 inches in men, and greater than 35 inches in women) known as abdominal obesity. Collectively the accumulation of these risk factors is known as the metabolic syndrome.

Laboratory Skills and Capabilities for Managing or Leading Exercise Interventions

  • American College of Sports Medicine Certified Exercise Test Technologist
  • American College of Sports Medicine Certified Clinical Exercise Physiologist, American College of Sports Medicine Certified Clinical Program Director
  • American Council of Exercise Certified Group Exercise Leader (Aerobics, Step, Pilates, Yoga, Spin, Musculoskeletal Strengthening Group Exercise, Tabata)
  • Ananda Certified Yoga Instructor (200 hour)
  • Certified Phlebotomist
  • American Red Cross Certified Water Safety Instructor
  • Biofeedback (approved application and in the process of BCIA certification)

Laboratory Equipment

  • Thought Technology LTD Biofeedback with BioGraph Infiniti Software
    • Skin Conductance
    • Peripheral Temperature
    • Blood Volume Pulse
    • Surface Electromyography (SEMG)
    • Respiration
    • Photoplethysmograph equipment
    • Blood Pressure
  • CardioPro Software
    • Heart Rate Variability Time Domain Measurements
    • Heart Rate Variability Frequency Domain Measurements
  • EmWave Pro for Health Professionals (Heart Math)
    • Heart Coherence
  • Cholesterol, Glucose, Triglyceride Monitors
  • Biopac MP150 for more sophisticated measures of SEMG
  • Nnoninvasive Blood pressure (NIBP) Monitoring System
  • Upright Posture Trainer https://www.youtube.com/watch?v=7YXj6Rr48TM.
  • Phlebotomy Supplies
    • IV's
    • Needles
    • Lines

Researcher:     Ty B. Palmer, Ph.D.

Title:                   Assistant Professor in Human Performance

Laboratory:     Room 107, Muscular Assessment Laboratory

Personal Statement

Dr. Palmer has 6 years of experience conducting muscular assessment studies in humans.  He currently co-directs the Muscular Assessment Laboratory where he has been an independent investigator since 2016.  His background includes the study of aging, fall-history, and athletic status on muscle stiffness, strength, postural balance, and other performance-based outcomes in young and elderly adults.  Dr. Palmer has recently been funded by the Mid America Athletic Trainers' Association (2017).  His current research focus is understanding the i) impact of age-related disparities on muscular function, and ii) interventional strategies to improve functional performance in older adults.

Application of Expertise to Health Disparity Research

Dr. Palmer plans to extend his research into the study of physiological and behavioral determinants for functional decline in elderly adults, particularly as they pertain to muscular strength and dynamic performance deficits.  His recent research in the age-related declines in muscle force production and balance-related capabilities in older adults fits well with this planned approach to study health disparities.  In addition, he plans to collaborate with new colleagues in the department to investigate suitable dietary interventions that are effective at reducing the risk of falls and balance-related injuries in older adults.

Laboratory Skills and Capabilities

  • Measure muscle power, flexibility, and activation characteristics during dynamic activities (i.e., vertical jumping, stretching, contractions)
  • Measure muscle force production during maximal contractions using load cells and isokinetic dynamometers
  • Assess muscle size and quality measurements using diagnostic ultrasound
  • Assess muscle stiffness using load cells and electrogoniometers
  • Muscle strength using electronic handgrip and isokinetic dynamometers
  • Electromyographic (EMG) amplitude measure of skeletal muscle activity
  • Functional performance testing (can measure chair rise power, functional reach, postural stability)
  • Postural stability measurements using a commercially-designed balance testing system

Laboratory Equipment

  • Biodex System 3 Isokinetic Dynamometer (Biodex Medical Systems Inc.)
  • Diagnostic ultrasound (GE Logiq e)
  • Biosway Balance (Biodex Medical Systems Inc.)
  • Linear Velocity Transducer (Tendo Sports Machines)
  • Load Cell (LCHD-250, Omega Engineering Inc.)
  • Electrogoniometer (TSD130B, Biopac Systems Inc.)
  • Handgrip Dynamometer (Biopac Systems Inc.)
  • MP150 and MP100 (Biopac Systems Inc.)
  • LabView (LabVIEW, Version 11.0, National Instruments)
  • Force Plate (AMTI)
  • Isokinetic Squat Machine (Exerbotics)

Researcher:    Eric Rivas, Ph.D.

Title:               Assistant Professor in Exercise Physiology

Laboratory:    Room 109, Exercise & Thermal Integrative Physiology Laboratory

Personal Statement

Dr. Rivas is an exercise and thermal physiologist. He utilizes an integrative physiological approach to study how exercise and environmental temperatures affect health in populations with metabolic dysfunction, such as obesity, diabetes and severely burn-injured adults and children. His doctoral training involved an American Heart Association predoctoral fellowship in the Thermal and Vascular Physiology Laboratory at the Institute for Exercise and Environmental Medicine and the University of Texas Southwest Medical Center at Dallas. Before joining TTU, he completed postdoc fellowships in the Department of Pediatrics at the University of California Irvine (National Institute of Health T32 postdoctoral fellowship focused on Exercise and Rehabilitation Medicine in pediatric exercise physiology and obesity), and another in the Department of Surgery at University of Texas Medical Branch and Shriners Hospitals for Children Galveston (Diversity Supplement funded by Eunice Kennedy Institute of Child Health and Human Development and NRSA F32 funded by the National Heart Lung and Blood Institute) where he studied temperature regulation and cardiovascular responses, during rest and exercise in children with severe burn injury. At Texas Tech University, his research agenda aims to continue clinically relevant translational research and conduct high-quality independent research that is focused on cardiovascular physiology and develop a successful extramurally funded program to support his research objectives.

Application of Expertise to Health Disparity Research

Dr. Rivas is a current scholar (cohort 6) in the Program to Increase Diversity in Cardiovascular Health-Related Research (PRIDE-CVD) sponsored by the National Heart, Lung, and Blood Institute, which aims to support minority scientist that focus on addressing health disparities research. The primary focus of his laboratory will address cardiovascular and metabolic disease health disparities among Hispanic populations. The approach will involve short and long-term nutrition, exercise, and heat therapy interventions which will understand the mechanisms of improving vascular and metabolic health in Hispanics. The second focus of his laboratory is to understand how temperature regulation is affected in vulnerable populations (i.e., aging, obesity, diabetes, and sickle cell anemia) that may have an increased risk for heat related injury. The third focus is student research involvement, particularly training minority students.

Laboratory Skills and Capabilities

  • Darwin Environmental chamber: 12x14x11 room with the capabilities to control for temperature and humidity (5C to 45C; 10% to 95% humidity) for heat and cold exposure studies during rest or exercise.
  • Water perfusion suits: tube lined suits for increasing or decreasing body temperature
  • Internal body and skin temperature system with wireless temperature pill.
  • Capacitance hygrometer system: sweat rate monitoring
  • AD Instruments data acquisition: continuous data recording of cardiovascular and temperature measurements
  • Muscle sympathetic nerve activity: recording capabilities during rest and exercise
  • ActiGraph GT3X physical activity monitors
  • Perimed and Moors Laser Doppler system: measurement of skin blood flow
  • Hokanson Plethysmography system: measurement of limb blood flow
  • Microdialysis system: mechanistic study of microvascular function
  • GE Logiq Doppler ultrasound: assessment of cardiac and vascular function test and brain blood flow
  • Finapres: beat to beat arterial blood pressure monitoring
  • SphygmoCor: measurements of central blood pressure pulse wave analysis and pulse wave velocity
  • Indirect calorimetry, MOXUS Modular Metabolic System: oxygen uptake during exercise and resting energy expenditure
  • Respiratory mass spectrometer: measurement of cardiac output and stroke volume during rest and exercise

Researcher:               Grant M. Tinsley, Ph.D.

Title:                          Assistant Professor in Exercise Physiology

Laboratory:               Room 120A, Energy Balance & Body Composition Laboratory

Personal Statement

Dr. Tinsley has 5 years of experience conducting research in humans. He currently directs the Energy Balance & Body Composition Laboratory and supervises the Body Composition Assessment Laboratory. His background includes the study of lifestyle interventions to improve body composition and research concerning optimal assessment methodology for human body composition. Dr. Tinsley has received private funding to evaluate the efficacy of a dietary supplement to reduce muscle breakdown during fasting (2016-2017). His current research focus is i) evaluating novel lifestyle interventions (including exercise, nutrition and supplementation) to improve body composition and health and ii) describing the agreement and bias between different body composition and energy expenditure assessment tools across diverse populations.

Application of Expertise to Health Disparity Research

Dr. Tinsley plans to integrate health disparities into upcoming body composition research studies. This research will provide information concerning the reliability and accuracy of different methods of body composition and energy expenditure assessment in various racial and ethnic groups, including underserved populations. There are known racial differences in body composition and energy expenditure which have not been fully explored with all available assessment methods. Accurate assessment of body composition and energy expenditure are critical for informing obesity research and clinical practice. Additionally, due to racial differences in prevalence of obesity, it is important to validate longstanding and novel assessment methods in multiple racial groups and across all ages.

Laboratory Skills and Capabilities

  • Measure total fat mass using a 4-compartment model, bioimpedance spectroscopy (BIS), multi-frequency bioelectrical impedance analysis (BIA) and single frequency BIA
  • Measure regional fat mass using multi-frequency BIA and BIS
  • Measure total and regional fat-free mass and skeletal muscle mass using multi-frequency BIA and BIS
  • Measure total body water, intracellular water and extracellular water using multi-frequency BIA or BIS
  • Evaluate electrical parameters of the body (i.e. phase angle, resistance, reactance and bioelectrical impedance vector analysis [BIVA])
  • Assess resting energy expenditure using indirect calorimetry
  • Assess substrate utilization using indirect calorimetry
  • Assess body composition and resting energy expenditure outside of the laboratory environment using portable BIA/BIS and indirect calorimetry devices
  • Evaluation of validity and reliability of novel and consumer-grade devices which purportedly measure body composition (i.e. fat mass and fat-free mass) or resting energy expenditure
  • Implement of nutrition and dietary supplementation protocols
  • Assess blood pressure and heart rate using an automated sphygmomanometer
  • Analyze data using IBM Statistical Package for the Social Sciences (SPSS) and Microsoft Excel

Laboratory Equipment

  • Multi-frequency Bioelectrical Impedance Analyzer (Seca mBCA 514)
  • Indirect Calorimeter (ParvoMedics TrueOne 2400)
  • Portable Indirect Calorimeter (Cosmed FitMate WM)
  • Bioimpedance Spectroscopy analyzer (Impedimed SOZO) - Arriving Fall 2017
  • Portable Bioimpedance Spectroscopy analyzer (Impedimed SBF7) - Arriving Fall 2017
  • Single frequency bioelectrical impedance analyzers (Tanita)
  • Portable consumer-grade devices for validation (Breezing indirect calorimeters and Skulpt bioelectrical impedance analyzers)
  • Medical bed for energy expenditure and body composition assessment in the supine position
  • Seca digital scale with stadiometer
  • Omron automated sphygmomanometer
  • 2 computer stations for data analysis and student researchers
  • Dual-energy x-ray absorptiometry scanner (GE Lunar Prodigy) is located adjacent to this laboratory in the Body Composition Assessment Laboratory and is frequently used in conjunction with the equipment in the Energy Balance & Body Composition Laboratory

Department of Kinesiology & Sport Management

  • Address

    Box 43011, Texas Tech University, 2500 Broadway, Lubbock, TX 79409
  • Phone