Andrew Merryweather, PhD
  • Assistant Professor, Mechanical Engineering
  • Adjunct Assistant Professor, Family And Preventive Medicine
  • Adjunct Assistant Professor, Physical Therapy & Athletic Training

Research Statement

My enthusiasm for research can be summarized by the statement that hangs on a plaque above my desk, "Choose your Race, Then Run". My main research interests lie within the categories of biomechanical/biomedical design, ergonomics, safety and rehabilitation engineering, with a focus on 3D motion analysis and injury prevention and modeling. The majority of my work has focused on injury biomechanics and human centered movement analysis. I consider my "race" being able to contribute to the body of knowledge in these research areas and pioneer new technologies for the future. In many cases the work in biomechanical design and rehabilitation engineering is blended with safety, ergonomics, injury prevention and controls/robotics. My focus has been on studying complex physical movements and developing new techniques for motion capture and reactive force quantification to solve musculoskeletal models. Many of my past and current research projects have been in collaboration with researchers from other disciplines including Health Sciences, School of Medicine, College of Nursing, Computer Science, Mechanical Engineering, Industrial and Systems Engineering, and Agricultural Systems Technology and Education. I have had the opportunity of working both as an individual investigator and as part of a transdisciplinary research team. It has been very rewarding as a young investigator to be part of these teams and learn from more experienced researchers. The majority of research topics I have pursued reach across disciplines to further enrich the capabilities of the research team and address complex research questions. I believe it is necessary as we look to the future to make these connections and build relationships in both academia and through private business partners. I expect that with an increased emphasis on labor costs combined with the challenges of an aging population, the need for assistive technologies, improved workplace environments through design and rehabilitation engineering will continue to surge. I believe, based on my research strengths and current interests, the probability of sustaining a successful research program is high. I intend to continue pursuing funding to further my current efforts and focus on injury prevention and rehabilitation through design. 

A list of a few of the projects I am presently involved with as investigator, advisor or co-advisor include: Quantifying the Effects of Whole Body Fatigue and Fall Risk related to Truck Drivers, Dismounting Biomechanics from Moving Railroad Equipment, Developing and Validating a New Knee Model to Quantify Joint Compressive Loading, Shoulder Model Development and Injury Prediction from Pushing/Pulling, Pneumatic Impact Tools and Hand Arm Vibration Exposure, Quantifying Lower Limb and Back Stresses on Irregular Surfaces While Carrying Backpacks, Patient Falls and Optimum Hospital Bed Design Parameters, Development of a Wearable Active Lifting Assist Device, Quantifying Torque and Thrust Forces by Fastener Head Type and Material and Design of a Paragliding Chair for Persons with Disabilities.

The broad nature of research projects and diversified research scope allow me to further reach across disciplines and make connections that will provide me with many opportunities to establish an even more successful research program in the future. I have made an effort to branch out further by learning new software for motion analysis and biomechanical modeling. In the past two years I have acquired and learned how to use Vicon Nexus™, AMASS™, Optitrak™, Visual 3D™, Arena™ and OpenSim™. AMASS™ was obtained through a University Teaching Grant to improve learning and teaching complex motion tracking. This newly acquired skillset further enables me to successfully address research questions that have been out of reach in the past. It has also given me an opportunity to enhance learning in the research lab and classroom with students. Nearly every research project presently underway or planned in the near future will utilize one or more of these research tools. I expect this skillset to continue to increase as I mature as a researcher. One of the most recent and exciting applications utilizing this newly acquired skillset is in the area of patient safety and fall prevention through hospital bed design. Over the past three years I have worked with faculty from the College of Nursing to obtain a significant source of funding to study the influence of hospital bed design and position on fall biomechanics. Currently there are no established guidelines that effectively manage this costly source of injuries. Working with my collaborators, the overall goal or this research is to develop critical design and health care practice guidelines to reduce patient falls occurring at bedside.

Over the next few years I plan to work towards establishing a center for Rehabilitation Ergonomics and Technology Advancement (RETA). I have always been open to working with others as a collaborator and am excited to explore the many opportunities that exist.

Research Keywords

  • Spine Biomechanics and 3D Motion
  • Occupational Health and Safety
  • Musculoskeletal Disorders
  • Gait Analysis
  • Ergonomics
  • Biomechanics
  • Balance and aging
  • 3D Motion Analysis

Presentations

  • Merryweather, A., Hunt, M., Smith, L., Foreman, B., Minor, M. Gait Alterations on Irregular Terrain in older adults with or without Parkinson Disease: Fall Risk Implications. 19th Triennial Congress of the International Ergonomics Association Melbourne, Australia 8/12/2015. Conference Paper, Refereed, Presented, 08/12/2015.
    http://iea2015.org/
  • Merryweather, A, .Kapellusch, J., Boa, S., Thiese, M, Silverstien, B., Hegmann, K.., Garg, A. Are work pace, overtime, job rotation or secondary employment associated with CTS and epicondylitis? 19th Triennial Congress of the International Ergonomics Association Melbourne, Australia 8/11/2015. Conference Paper, Refereed, Presented, 08/11/2015.
    http://iea2015.org/
  • Christman, M, Merryweather, A. Analysis of the influence of hospital bed height on kinematic parameters associated with patient falls during egress. AHFE 2015: 6th International Conference on Applied Human Factors and Ergonomics 2015 and the Affiliated Conferences, 26–30 July 2015 Las Vegas. Conference Paper, Refereed, Presented, 07/27/2015.
    http://www.globaleventslist.elsevier.com/events/20...
  • Castillo, J, Daly, A, Eastman, A, Freckleton, K, Gubler, K, Silotti, A, Merryweather, A. (2015) “Beginning Braille Learning Device”, Summer Biomechanics, Bioengineering and Biotransport Conference, June 17-20, 2015, Snowbird Resort, Utah, USA. Other, Other, 06/17/2015.
    http://sb3c.org/wp-content/uploads/SB3C2015-Progra...
  • Merryweather A, “Modeling Physical Exposure Risk Factors for LBP: How Much is Too Much?”, Presentation for the technical session on Physical Risk factors and Musculoskeletal Disorders: A review of Findings from the NIOSH Field–Based Studies at AIHce, June 3, 2015. Invited Talk/Keynote, Presented, 06/03/2015.
    http://aihce2015.org/education/program-by-topic/
  • Christman, M., Morse, J., Wilson, C., Godfrey, N., Doig, A., Bloswick, D., Merryweather, A., "Kinematic analysis of sit-to-walk movement in a fall-prone population", 7th World Congress of Biomechanics, Boston, Massachusetts, July 6-11, 2014. Other, Other, 07/2014.
    http://wcb2014.com/
  • Tung, K, Shorti, R, Downey, E, Bloswick, D, Merryweather A. (2014, July). Evaluation of an Ergonomic Laparoscopic Handle Design and Upper Extremity Musculoskeletal Disorder Risk Factors. 7th World Congress of Biomechanics, Boston, Massachusetts, July 6-11, 2014. Other, Other, 07/2014.
    http://wcb2014.com/
  • Wilson C., Morse J., Godfrey N., Doig A., Christman M., Bloswick D., & Merryweather A. (2014, July). Patient Mobility in Hospital Beds With and Without Side Rails. 7th World Congress of Biomechanics, Boston, Massachusetts, July 6-11, 2014. Other, Other, 07/2014.
    http://wcb2014.com/
  • Morse J.M., Merryweather A., Wilson C.,Godfrey N., Doig A., Bloswick D., “Integrated qualitatively driven (QUAL-quan) mixed methods designs”, Mixed Methods International research Association, Boston, MA, June 27-29, 2014 . Conference Paper, Refereed, Presented, 06/2014.
    http://mmira.wildapricot.org/page-1665577
  • Seth Paul, Andrew Merryweather, Paul LaStayo, “Development and Evaluation of a Research and Rehabilitation Device for Lateral Epicondylalgia,” National Occupational Research Agenda (NORA) Young/New Investigators Symposium, April 18, 2014. Conference Paper, Refereed, Presented, 04/18/2014.
    http://www.nora.mech.utah.edu/NORA-2014.html
  • Tung KD, Shorti RM, Downey EC, Bloswick DS, Merryweather AS, “Evaluating the Effect of Implementation of Ergonomic Principles into Laparoscopic Tool Handle Design on Surgeon Performance and Efficiency” SAGES 2014 Annual Meeting – Putting the Patient First, Salt Lake City, UT, USA, April 5, 2014. Conference Paper, Refereed, Presented, 04/05/2014.
    http://www.sages2014.org/wp-content/uploads/2013/1...
  • Morse, JM, Merryweather, A., Doig, A., Wilson, C., & Bloswick, D. (2013). The evaluation of safe bed height and side rail use. Phase 1: Development of a model. Paper presented to the 46th Annual Communicating Nursing Research Conference, Western Institute of Nursing, April 10-13, Anaheim, California. Conference Paper, Refereed, Presented, 04/2014.
    http://www.winursing.org/
  • Rees, D, Hopkins, J, Merryweather, AS. “Pediatric Adaptive Ski”, 2014 Undergraduate Research Symposium, April 1, 2014. Other, Presented, 04/01/2014.
  • Hopkins, J, Rees, D, Merryweather, AS. “A Novel Pediatric Adaptive Skiing System”, 2014 Undergraduate Research Symposium, April 1, 2014. Other, Presented, 04/01/2014.
  • Merryweather AS, Godfrey N, Steele T, 17th Annual Applied Ergonomics Conference 2014, “Characterization of Various Probing Bards Used in the Gas Services Industry: A biomechanics Study Suing 3-D Motion Analysis Techniques and Instrumentation”, March 24-27, 2014. Conference Paper, Refereed, Presented, 03/2014.
    http://www.iienet2.org/ergo/conference/
  • Greenland KO, MacWilliams BA, Bloswick DS and Merryweather AS. Effect of vacuum socket suspension on unilateral trans-tibial amputee gait. AAOP Annual Meeting Journal of Proceedings. Chicago, IL, Feb 26-Mar 1, 2014. Conference Paper, Refereed, Presented, 03/2014.
    http://www.academyannualmeeting.org/2014/
  • Godfrey N, Doig A., Morse J, Bloswick D, Merryweather AS, 17th Annual Applied Ergonomics Conference 2014, “Hospital Bed Height as a Contributing Factor to Patent Safety”, March 24-27, 2014. Conference Paper, Refereed, Presented, 03/2014.
    http://www.iienet2.org/ergo/conference/
  • Godfrey, N., Morse, J. Bloswick, D., Doig, A., Christman, M., Wilson, C., Merryweather, A., “Biomechanics of fall prone subjects during the hospital bed exit task”, 28th Annual Update in Physical Medicine and Rehabilitation, Park City, Utah, January 30 – February 1, 2014. Other, Presented, 02/01/2014.
  • Defining Roles: Updated Ergonomics Programs Help Manage Employee Health and Safety, 2013 Risk Management Conference, Aug. 8, 2013. Invited Talk/Keynote, Presented, 08/08/2013.
  • Andrew Peter Vogt, Kurt Beschorner, Andrew Merryweather, Stacy J Morris Bamberg Potential to Fall of Bipeds Using Foot Kinematics. 35th Annual International IEEE EMBS Conference, July 3-7, Osaka, Japan. Conference Paper, Refereed, Presented, 07/2013.
  • Garg A, Kapellusch J, Hegmann KT, Thiese MS, Merryweather A. Exposure-response Relationships between Biomechanical Stressors and Incidence of Carpal Tunnel Syndrome and Lateral Epicondylitis. Presented at the Eighth International Scientific Conference on Prevention of Work-related Musculoskeletal Disorders. Busan, Korea. July 9, 2013. Premus 2013;76. Conference Paper, Refereed, Presented, 07/2013.
  • Garg A, Boda S, Kapellusch J, Hegmann KT, Thiese MS, Merryweather A. Individual, Psychosocial and Job Physical Risk Factors for Low-back Pain: Results from a 3-year Prospective cohort Study. Presented at the Eighth International Scientific Conference on Prevention of Work-related Musculoskeletal Disorders. Busan, Korea. July 9, 2013. Premus 2013;83. Conference Paper, Refereed, Presented, 07/2013.
  • Grenis, T, Hutchings, B, Sorenson, K, Van Horssen, K, Williams, C, Devries, L, Merryweather, A. “Green Machine: Robotic Yard and Garden Helper” ASME Summer Bioengineering Conference, June 26-29, 2013. Conference Paper, Refereed, Presented, 06/2013.
  • Cosman, C, Cornwell, R, Evans, Z, Cintron, O, Myers, M, Perkins, C, Bloswick, D, Merryweather, A. “E-tetra kayak: adaptive sport kayak for recreational therapy for persons with spinal cord injuries” ASME Summer Bioengineering Conference, June 26-29, 2013. Other, Presented, 06/2013.
  • Rehabilitation and Adaptive Technologies: Realizing Ideas Through Design, Eighth Annual James R. Swenson, M.D. Scientific Symposium Day, May 23, 2013. Invited Talk/Keynote, Presented, 05/23/2013.
  • Xu, H, Merryweather, A., Bloswick, D, “Development of A Musculoskeletal Model to Determine Knee Contact Force During Walking on Ballast Using Opensim”, Proceedings of the 11th International Symposium, Computer Methods in Biomechanics and Biomedical Engineering, April 3 - 7, 2013, Salt Lake City, Utah, USA. Conference Paper, Refereed, Presented, 04/2013.
  • Shorti R, Tung K, Downey E, Bloswick D, Merryweather,A. Evaluating the Performance of a Novel Laparoscopic Tool Handle Design and Upper Extremity Biomechanics. Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) 2013 Emerging Technology, Baltimore Convention Center, Baltimore, MD, April 17-20, 2013. Conference Paper, Refereed, Presented, 04/2013.
  • Hopkins, J, & Merryweather, A, “Standing Balance performance And Associated Morse Fall Risk Score”, Undergraduate Research Symposium, Spring 2013. Other, Presented, 04/2013.
  • Cruz M, Jones T, Patton L, Payne R, Steel R, Wood E, Merryweather A, Pahler L. Health Hazards in an Iron Pipe Power Pole Assembly Operation,” 11th Annual Regional NORA Young/New Investigator Symposium, April 2013. Other, Presented, 04/2013.
  • Farokhi A, Fechser M, Patil S, Okorie O, Sevy S, Merryweather A, Pahler L, Wood E. “Noise Mapping and personal Dosimetry for a Bag Manufacturing Company,” 11th Annual Regional NORAYoung/New Investigator Symposium, April 2013. Other, Presented, 04/2013.
  • Koch T, Gammon J, Giske A, Marshall A, Slotnaes A, Merryweather A, Pahler L, Wood E. “Ergonomic Assessment of Soiled Laundry Sorting Procedure at a Hospital Laundry Facility in Utah, “11th Annual Regional NORA Young/New Investigator Symposium, April 2013. Other, Presented, 04/2013.
  • Merryweather, A, Doig, A, Morse, Bloswick, D. “Standing Balance Performance and Associated Morse Fall Scale Risk Score”, Presented at the 7th Annual Center on Aging Poster Retreat, April 8, 2013. Other, Presented, 04/2013.
  • Shorti R, Tung K, Downey E, Bloswick D, Merryweather A. Evaluation of a Novel Laparoscopic Tool Handle Design and its influence on Upper Extremity Biomechanics: Preliminary Results. 11th Annual Regional NORA Young/New Investigator Symposium, April 2013. Other, Presented, 04/2013.
  • Doig, A, Merryweather, A., Morse, J, Bloswick, D. “Challenges of Biomechanical Data Capture in an Anthropometrically Diverse Geriatric Population at Risk for Falls”, Presented at the 7th Annual Center on Aging Poster Retreat, April 8, 2013. Other, Presented, 04/2013.
  • Landes, C, Godfrey, N, Merryweather, A, Bloswick, D, “3D Motion Capture Data Processing”, Undergraduate Research Symposium, Spring 2013. Other, Presented, 04/2013.
  • Merryweather, A, Doig, A, Morse, Bloswick, D. “Standing Balance Performance and Associated Morse Fall Scale Risk Score”, Presented at the HFES 2013 International Symposium on Human Factors and Ergonomics in Health Care: Advancing the Cause, March 12, 2013. Conference Paper, Refereed, Presented, 03/2013.
  • Doig, A, Merryweather, A., Morse, J, Bloswick, D. “Challenges of Biomechanical Data Capture in an Anthropometrically Diverse Geriatric Population at Risk for Falls”, Presented at the HFES 2013 International Symposium on Human Factors and Ergonomics in Health Care: Advancing the Cause, March 12, 2013. Conference Paper, Refereed, Presented, 03/2013.
  • Poster Standing Balance Performance and Associated Morse Fall Scale Risk Score, Merryweather, Doig, Morse, Bloswick, International Symposium on Human Factors in Healthcare, Baltmiore Maryland, March 2013. Other, Accepted, 12/2012.
  • Poster Challenges of Biomechanical Data Capture in an Anthropometrically Diverse Geriatric Population at Risk for Falls, Doig A, Merryweather A, Morse J, Bloswick D, International Symposium on Human Factors in Healthcare, Baltmiore Maryland, March 2013. Other, Accepted, 12/2012.
  • Yoo, B, Kim, S, Merryweather, A. “Locating Missing or Blocked PSIS Markers Using Thigh Clusters” Presented at the UKC2012, Park City, UT, USA, Aug 8-11, 2012. Conference Paper, Refereed, Presented, 08/2012.
  • Kim, S, Yoo, B, Lee, S, Merryweather, A. “Customized Load Cell Design to Calculate Shoulder Reaction Forces while Carrying a Backpack” Presented at the UKC2012, Park City, UT, USA, Aug 8-11, 2012. Conference Paper, Refereed, Presented, 08/2012.
  • John Burton, Kevin Chamberlain, Parth Dudhiya, Billy Wang, Eric Wood, Andrew Merryweather, Leon Pahler, “Assembly Line Ergonomic Analysis,” 10th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2012. Other, Presented, 04/2012.
  • Travis Steele, Henry Klein, Jason McGowan, Eric Wood, Andrew Merryweather, Leon Pahler, “Comprehensive Analysis of Core Knock-Out Process at a Steel Foundry,” 10th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2012. Other, Presented, 04/2012.
  • Travis Steele, Andrew Merryweather, Clark Dickerson, Donald Bloswick, “A Computational Study of Shoulder Muscle Forces During Pushing Tasks,” 10th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2012. Other, Presented, 04/2012.
  • Sanjay Gogate, James C. Snead, Justin R. Day, Tyler D. Albright, Eric Wood, Andrew Merryweather, Leon Pahler, “Health and Safety Program Writing for a Small Business in the Microchip Processing Industry,” 10th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2012. Other, Presented, 04/2012.
  • Jordan Knight, Faris Ali, Sheler Sadati, Erik Erlingsson, Eric Wood, Andrew Merryweather, Leon Pahler, “Ergonomic Analysis of a Central Processing Sink Station,” 10th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2012. Other, Presented, 04/2012.
  • Scott Ryan, Chris Nield, Nate Stettler, Eric Wood, Andrew Merryweather, Leon Pahler, “Noise Mapping and Personal Dosimetry for a Dental Manufacturing Company,” 10th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2012. Other, Presented, 04/2012.
  • Merryweather, A., Pate, M., Vemparala, S. (2011). Tractor Mounting/Dismounting Biomechanics Related to Falls. ASABE Annual International Meeting, Louisville, KY, August 7-10, 2011. Conference Paper, Refereed, Presented, 08/2011.
  • Merryweather, A., Pate, M., Vemparala, S. Self-Reported Tractor Operator Falls,Ergonomics and Musculoskeletal Pain. ASABE Annual International Meeting, Louisville, KY,August 7-10, 2011. Conference Paper, Refereed, Presented, 08/2011.
  • Yoo, B, Merryweather, A, Kim, S “Effects of Different Surface Conditions on Postural Sway.” Presented at the UKC2011, Park City, UT, USA, Aug 10-14, 2011. Conference Paper, Refereed, Presented, 07/2011.
  • Kim, S, Merryweather, A, Yoo, B. “Factor Analysis of Military Driver Behavior and Accident Liability.” Presented at the UKC2011, Park City, UT, USA, Aug 10-14, 2011. Conference Paper, Refereed, Presented, 07/2011.
  • Merryweather, A. Bloswick, D, Balaji, AK. “Ergonomics and Safety: Role in Sustainable Manufacturing.” Presented at the Two-Day Workshop Innovation for Sustainable Manufacturing & Workforce Effectiveness, Lexington, KY, June 21-22, 2011. Other, Presented, 06/21/2011.
  • Xu, H., Merryweather, A. “Influence of Foot Marker Placement on Predicted Muscle Force During Gait.” Presented at the Rocky Mountain American Society of Biomechanics Conference, Estes Park, CO. April 8-9, 2011. Conference Paper, Refereed, Presented, 04/09/2011.
  • Dustin Campbell, Kasey Greenland, Mitch Transtrum, Andrew Merryweather, Eric Wood, Darrah Sleeth, An Ergonomic Assessment Of Team Lifted Objects In A Production Process, 9th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2011. Other, Presented, 04/2011.
  • James Nolin, Ryan Probst, Laura Brodhag, Eric Wood, Darrah Sleeth, Andrew Merryweather Comprehensive Noise Study At Metal Refinery, 9th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2011. Other, Presented, 04/2011.
  • Matthew Raphael, Andrew Merryweather, Louise Butler, Donald Bloswick, “Testing and Comparison of Four Manual Wheelchair Designs,” 9th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2011. Other, Presented, 04/2011.
  • Rahila Andrews, Patricia Pankey, Matthew Raphael, Andrew Merryweather, Darrah Sleeth, Eric Wood, Assessment Of Upper Extremity Musculoskeletal Disorders In A Partially Automated Laboratory Sorting System, 9th Annual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2011. Other, Presented, 04/2011.
  • Josh Corbridge, Justin Kargis, Donald Mehr, Ulrike Ott, Eric Wood, Andrew Merryweather, Darrah Sleeth, Comprehensive Dust Sampling Study At An Architectural Woodworking Plant, 9th Annual Regional National Occupational Research Agenda(NORA) Young/New Investigators Symposium, Salt Lake City, April 2011. Other, Presented, 04/2011.
  • William Newkirk, Travis Green, Alex Morgan, Jason Kraft, Darrah Sleeth, Eric Wood, Andrew Merryweather, Airborne Silver Exposure At A Precious Metals Refinery, 9thAnnual Regional National Occupational Research Agenda (NORA) Young/New Investigators Symposium, Salt Lake City, April 2011. Other, Presented, 04/2011.
  • Merryweather, A., Shorti, R., Thiese, M., Caughey, W., Hegmann, K. (2010). Commercial Truck Driver Mounting/Dismounting Behavior Related to Falls. International Conference on Commercial Driver Health and Wellness, Baltimore MA, November 8-10, 2010. Conference Paper, Refereed, Presented, 11/10/2010.
  • Merryweather, A.S., Yoo, B., Bloswick, D.S., “Trip-induced Falls on Crushed Rock Aggregate, Specifically Railroad Ballast,” International Conference on Fall Prevention and Protection (ICFPP), West Virginia, May 19-20, 2010. Conference Paper, Refereed, Presented, 05/20/2010.
  • Greenland, K, Merryweather, A. (2010). Motion Capture in Ergonomics. 2nd Annual ERC Interdisciplinary Forum on measurement Systems for Occupational Health and Safety Research. Other, Presented, 04/29/2010.
  • Brammer, C, Merryweather, A. (2010). Motion Capture in Ergonomics. 2nd Annual ERC Interdisciplinary Forum on measurement Systems for Occupational Health and Safety Research. Other, Presented, 04/29/2010.
  • Shorti, R, Merryweather, A. (2010). Force/Pressure Instrumentation. 2nd Annual ERC Interdisciplinary Forum on measurement Systems for Occupational Health and Safety Research. Other, Presented, 04/29/2010.
  • Merryweather, A, Greenland, K. (2010). Motion Analysis in Biomechanics: Art or Technique?. 2nd Annual ERC Interdisciplinary Forum on measurement Systems for Occupational Health and Safety Research. Other, Presented, 04/29/2010.
  • Graziano K, Oostema S, Thiese M, Wood E, Larson R, Merryweather A. (2010). Piece Rate Compensation and Upper Extremity Musculoskeletal Disorders in Sewing Machine Operators. Proceedings of 8th Annual Regional NORA Young/New Investigators Symposium. Conference Paper, Refereed, Presented, 04/2010.
  • Migel A, Freestone J, Godfrey N, Wood E, Larson R, Merryweather A. (2010). Manual Material Handling at a Window Covering Manufacturer. Proceedings of 8th Annual Regional NORA Young/New Investigator Symposium. Conference Paper, Refereed, Presented, 04/2010.
  • McDonald J, Sterzer B, Ewing G, Larson R, Merryweather A, Wood E. (2010). Assessment of Combustible Airborne Dust Hazards in a Printing Facility. Proceedings of 8th Annual Regional NORA Young/New Investigators Symposium. Conference Paper, Refereed, Presented, 04/2010.
  • Jampala, S, Kallakanti, M, Merryweather, A. Evaluating the Effectiveness of Kneepads during Kneeling Work. 2010 Intermountain Graduate Research Symposium (March 2010). Other, Presented, 03/2010.
  • Knuteson, C, Merryweather, A, Bloswick, D. Powered All-Terrain Wheelchair (PATW). 2010 Disability Studies Forum (March 2010). Other, Presented, 03/2010.
  • Hogenson, B, Glassett, L, Mackay, D, Greer, J, Brady, S, Merryweather, A. PARACYLE. 2010 Disability Studies Forum (March 2010). Other, Presented, 03/2010.
  • Butler, L, Raphael, M, Merryweather, A. Understanding the BIomehanics of Alternative Wheelchair Designs. ACCESS Program for Women in Science and Mathematics (April 2010). Other, Presented, 03/2010.
  • Jampala, S, Kallakanti, M, Merryweather, A. Analysis of Internal Knees Stresses during Kneeling Work. 2010 Intermountain Graduate Research Symposium (March 2010). Other, Presented, 03/2010.

Research Groups

  • Miranda Newsome, Undergraduate Student. Mechanical Engineering. 08/24/2015 - 04/29/2016.
  • Boris Martinez, Visiting Student. BYU/Mechanical Engineering. 05/2012 - 05/2012.
  • Yi Wang, Visiting Student. Mechanical Engineering. 11/2010 - 06/2012.

Research Equipment and Testing Expertise

  • Motion Capture System - 24 Camera Optitrack (NaturalPoint) Motion Capture System - 10 Camera Flex 13.
  • The Ergonomics and Safety Lab has the equipment and tools for biomechanics research, assistive technology development and testing, and Productivity and Ergonomics Evaluations. We specialize in Musculoskeletal (MSD) research and Occupational Injury Prevention. Contact: Andrew Merryweather , 801-581-8118 , 1495 E 100 S.

Languages

  • Spanish, fluent.

Geographical Regions of Interest

  • Americas
  • Australia and New Zealand

Publications

  • Christensen JC, Wilson CR, Merryweather AS & Foreman KB (2017). Kinematics of the Pelvis, Torso, and Lower Limb During Obstacle Negotiation While Under Temporal Constraints. Anatomical record (Hoboken, N.J. : 2007). Vol. 300, 732-738. Published, 03/01/2017.
  • Xu H, Greenland K, Bloswick D, Zhao J & Merryweather A (2017). Vacuum level effects on gait characteristics for unilateral transtibial amputees with elevated vacuum suspension. Clinical biomechanics (Bristol, Avon). Vol. 43, 95-101. Published, 02/01/2017.
  • Applegate KA, Thiese MS, Merryweather AS, Kapellusch J, Drury DL, Wood E, Kendall R, Foster J, Garg A & Hegmann KT (2016). Association Between Cardiovascular Disease Risk Factors and Rotator Cuff Tendinopathy: A Cross-Sectional Study. Journal of occupational and environmental medicine. Vol. 59, 154-160. Published, 12/01/2016.
  • Xu H, Jampala S, Bloswick D, Zhao J & Merryweather A (2016). Evaluation of knee joint forces during kneeling work with different kneepads. Applied ergonomics. Vol. 58, 308-13. Published, 09/01/2016.
  • Hejrati B, Chesebrough S, Bo Foreman K, Abbott JJ & Merryweather AS (2016). Comprehensive quantitative investigation of arm swing during walking at various speed and surface slope conditions. Human movement science. Vol. 49, 104-15. Published, 09/01/2016.
  • Bao SS, Kapellusch JM, Merryweather AS, Thiese MS, Garg A, Hegmann KT, Silverstein BA, Marcum JL & Tang R (2016). Impact of Work Organizational Factors on Carpal Tunnel Syndrome and Epicondylitis. Journal of occupational and environmental medicine. Vol. 58, 760-4. Published, 08/01/2016.
  • Thiese MS, Hegmann KT, Kapellusch J, Merryweather A, Bao S, Silverstein B, Tang R & Garg A (2016). Psychosocial Factors Related to Lateral and Medial Epicondylitis: Results From Pooled Study Analyses. Journal of occupational and environmental medicine. Vol. 58, 588-93. Published, 06/01/2016.
  • Xu H, Merryweather A & Bloswick D (2016). Evaluation of a force plate system for measuring center of pressure in railroad ballast. (pp. 179-83). Vol. 46. Gait & posture. Published, 05/01/2016.
  • Bao SS, Kapellusch JM, Merryweather AS, Thiese MS, Garg A, Hegmann KT & Silverstein BA (2016). Relationships between job organisational factors, biomechanical and psychosocial exposures. Ergonomics. Vol. 59, 179-94. Published, 03/01/2016.
  • Marissa Christman, Janice Morse, Chris Wilson, Nate Godfrey, Alexa Doig, Donald Bloswick, Andrew Merryweather. Analysis of the Influence of Hospital Bed Height on Kinematic Parameters Associated with Patient Falls During Egress. 2015/12/31, Elsevier, Volume 3, 280-287. Published, 12/31/2015.
    http://www.sciencedirect.com/science/article/pii/S...
  • Hegmann KT, Thiese MS, Kapellusch J, Merryweather AS, Bao S, Silverstein B, Wood EM, Kendall R, Wertsch J, Foster J, Garg A & Drury DL (2015). Association Between Cardiovascular Risk Factors and Carpal Tunnel Syndrome in Pooled Occupational Cohorts. Journal of occupational and environmental medicine. Vol. 58, 87-93. Published, 12/01/2015.
  • Merryweather AS, Morse JM, Doig AK, Godfrey NW, Gervais P & Bloswick DS (2015). Effects of bed height on the biomechanics of hospital bed entry and egress. Work (Reading, Mass.). Vol. 52, 707-13. Published, 12/01/2015.
  • Hegmann KT, Thiese MS, Kapellusch J, Merryweather AS, Bao S, Silverstein B, Wood EM, Kendall R, Wertsch J, Foster J, Garg A & Drury DL (2015). Association Between Cardiovascular Risk Factors and Carpal Tunnel Syndrome in Pooled Occupational Cohorts. Journal of occupational and environmental medicine / American College of Occupational and Environmental Medicine. Vol. 58, 87-93. Published, 12/01/2015.
  • Thiese MS, Hegmann KT, Kapellusch J, Merryweather A, Bao S, Silverstein B & Garg A (2015). Associations between Distal Upper Extremity Job Physical Factors and Psychosocial Measures in a Pooled Study. BioMed research international. Vol. 2015, 643192. Published, 11/01/2015.
  • Xu H, Merryweather A, Bloswick D, Mao Q & Wang T (2015). The effect of toe marker placement error on joint kinematics and muscle forces using OpenSim gait simulation. Bio-medical materials and engineering. Vol. 26 Suppl 1, S685-91. Published, 09/01/2015.
  • Matthew S Thiese, Kurt T Hegmann, Jay Kapellusch, Andrew Merryweather, Stephen Bao, Barbara Silverstein, Arun Garg. Associations between job physical and psychosocial factors in a pooled study. Proceedings of the Human Factors and Ergonomics Society Annual Meeting, 59:1, 1229-1233, 2015/9/1. Published, 09/01/2015.
    http://pro.sagepub.com/content/59/1/1229.short
  • Hang Xu, Donald Bloswick & Andrew Merryweather. “An improved OpenSim gait model with multiple degrees of freedom knee joint and knee ligaments”. Computer Methods in Biomechanics and Biomedical Engineering, Vol. 18, Iss. 11, Pages 1217-1224, 2015. DOI:10.1080/10255842.2014.889689. Published, 08/18/2015.
    http://www.tandfonline.com/doi/abs/10.1080/1025584...
  • Xu, H, Merryweather, A, “The effect of toe marker placement error on lower limb joint kinematics and muscle forces using Opensim gait simulation. Bio-Medical Materials and Engineering, vol. 26, no. s1, pp. S685-S691, 8/17/2015. DOI: 10.3233/BME-151360. Published, 08/17/2015.
    http://content.iospress.com/articles/bio-medical-m...
  • Stephen S. Bao, Jay M. Kapellusch, Andrew S. Merryweather, Matthew S. Thiese, Arun Garg, Kurt T. Hegmann & Barbara A. Silverstein. Relationships between job organisational factors, biomechanical and psychosocial exposures. Ergonomics, Taylor & Francis 08/11/2015 DOI:10.1080/00140139.2015.1065347. Published, 08/11/2015.
    http://www.tandfonline.com/doi/abs/10.1080/0014013...
  • Andrew S Merryweather, Janice M Morse, Alexa K Doig, Nathan W Godfrey, Pierre Gervais, Donald S Bloswick. Effects of bed height on the biomechanics of hospital bed entry and egress. 2015/8/3, Work, pp1-7. Published, 08/03/2015.
    http://content.iospress.com/articles/work/wor2110
  • Tung KD, Shorti RM, Downey EC, Bloswick DS & Merryweather AS (2015). The effect of ergonomic laparoscopic tool handle design on performance and efficiency. Surgical endoscopy. Vol. 29, 2500-5. Published, 08/01/2015.
  • Xu, H., Wang, Y., Greenland, K., Bloswick, D., & Merryweather, A. The influence of deformation height on estimating the center of pressure during level and cross-slope walking on sand. Gait & Posture, Vol. 42, Iss. 2, pp 110-115, 7/31/2015. Published, 07/31/2015.
    http://www.sciencedirect.com/science/article/pii/S...
  • Xu H, Wang Y, Greenland K, Bloswick D & Merryweather A (2015). The influence of deformation height on estimating the center of pressure during level and cross-slope walking on sand. Gait & posture. Vol. 42, 110-5. Published, 07/01/2015.
  • Lorinda Smith, MaryEllen Hunt, Leland Dibble, Andrew Merryweather, K Bo Foreman. Obstacle Height and Divided Attention Affects Obstacle Crossing in People with Parkinson Disease. 4/1/2015, The FASEB Journal, vol. 29 no. 1 Supplement 705.1. Published, 04/01/2015.
    http://www.fasebj.org/content/29/1_Supplement/705....
  • Janice M. Morse, Pierre Gervais, Charlotte Pooler, Andrew Merryweather, Alexa K. Doig, Donald Bloswick. The Safety of Hospital Beds Ingress, Egress, and In-Bed Mobility. Global Qualitative Nursing Research, 1/1/2015, vol. DOI: 2 2333393615575321. Published, 01/01/2015.
    http://gqn.sagepub.com/content/2/2333393615575321....
  • Matthew S. Thiese, Kurt T. Hegmann, Jay Kapellusch, Andrew Merryweather, Stephen Bao, Barbara Silverstein, and Arun Garg. Associations between Distal Upper Extremity Job Physical Factors and Psychosocial Measures in a Pooled Study. BioMed Research International, Volume 2015, 11/2015 Article ID 643192, 9 pages, http://dx.doi.org/10.1155/2015/643192. Published, 01/01/2015.
    http://dx.doi.org/10.1155/2015/643192
  • Yoo, B., Kim, S., Merryweather, A., Bloswick, D. 1C1-3 The Effect of Carrying a Military Backpack on a Transverse Slope and Sand Surface on Lower Limb Kinetics. JES Ergonomics 51(Supplement), S398-S403, 2015. NAID: 13000509249. Published, 01/01/2015.
    http://ci.nii.ac.jp/naid/130005092491/
  • Tung, K, Shorti, R, Downey, J, Bloswick, D, Merryweather, A, “The Effect of Laparoscopic Tool Handle Design on Performance and Efficiency”, Surgical Endoscopy, Pages 1-6, 12/24/2014. Published, 12/24/2014.
    http://link.springer.com/article/10.1007/s00464-01...
  • Xu H, Bloswick D & Merryweather A (2014). An improved OpenSim gait model with multiple degrees of freedom knee joint and knee ligaments. Computer methods in biomechanics and biomedical engineering. Vol. 18, 1217-1224. Published, 12/01/2014.
  • Hang Xu, Andrew S Merryweather, Donald S Bloswick, “Joint loading, muscle co–contraction, ligament force and peak knee contact forces when walking on railroad ballast,” International Journal of Human Factors Modelling and Simulation, 4 (2); 87-101, 2014/1/1. Published, 11/2014.
    http://inderscience.metapress.com/content/y28224p5...
  • Kapellusch J, Garg A, Boda S, Hegmann KT, Moore JS, Thiese MS, Merryweather AS, Tomich S, Foster JC, Bloswick D, Malloy EJ. “Association between Lifting and Use of Medication for Low-Back Pain: Results from the Backworks Prospective Cohort Study”. J Occup Environ Med 2014;56(8):867-877. PMID 25099415. Published, 08/2014.
    http://journals.lww.com/joem/Abstract/2014/08000/A...
  • Shorti RM, Merryweather AS, Thiese MS, Kapellusch J, Garg A, Hegmann, K. (2014) “Fall Risk Factors for Commercial Truck Drivers”. J Ergonomics S3: 009. doi:10.4172/2165-7556.S3-009. Published, 07/2014.
    http://omicsgroup.org/journals/fall-risk-factors-f...
  • L Smith, ME Hunt, L Dibble, A Merryweather, K Foreman. “Examining causes and contributors to falls in Parkinson disease”. The FASEB Journal, 2014;28(1):728-729. Published, 04/2014.
    http://www.fasebj.org/content/28/1_Supplement/728....
  • Garg A, Kapellusch JM, Hegmann KT, Thiese MS, Merryweather AS, Wang YC, Mallow EJ. “The Strain Index and RLV for HAL: Risk of lateral epicondylitis in a prospective cohort”. Am J Ind Med 2014;57(3):286-302. PMID 24243166. Published, 03/2014.
    http://onlinelibrary.wiley.com/doi/10.1002/ajim.22...
  • T Steele, A Merryweather, D Bloswick. “Manual material handling guidelines for the shoulder: Biomechanical support for the Liberty Mutual Tables as developed by Snook and Ciriello”. International Journal of Industrial Ergonomics, 2014;44(2):275-280. Published, 03/2014.
    http://www.sciencedirect.com/science/article/pii/S...
  • H Xu, D Bloswick, A Merryweather. “An improved OpenSim gait model with multiple degrees of freedom knee joint and knee ligaments”. Computer Methods in Biomechanics and Biomedical Engineering. 2014;1-8. Published, 03/2014.
    http://www.tandfonline.com/doi/abs/10.1080/1025584...
  • Arun Garg, William S Marras, Sruthi Boda, Kurt T Hegmann, J Steven Moore, Jay M Kapellusch, Parag Bhoyar, Matthew S Thiese, Andrew Merryweather, Gwen Deckow-Schaefer, Donald Bloswick, Elizabeth J Malloy, Sue A Ferguson, Steven A Lavender, Riley E Splittstoesser, Gang Yang, Ming-Lun Lu, Thomas R Waters, Edward Krieg, Dwight Werren, Eric M Wood, James Foster, Tom Greene, Greg Stoddard, Jeremy Biggs, Fredric Gerr, Nathan B Fethke, Linda Merlino, Dan Anton, John Rosecrance, Michael P Jones, Michele Marcus, Alysha R Meyers, Carisa Harris-Adamson, Doohee You, Ellen A Eisen, Robert Goldberg, David Rempel, Z Joyce Fan, Barbara A Silverstein, Stephen Bao, Dave K Bonauto, Ninica L Howard, Caroline K Smith, Bradley Evanoff, Angelique Zeringue, Alfred Franzblau, Ann Marie Dale, Hannah Edwards, Jacqueline Wertsch, Richard Kendall, Leslie A MacDonald, Stephen D Hudock, Donald E Goddard, Helena Miranda, Laura Punnett, Rebecca J Gore, Mark Cote, Anne Kenny, Jeffrey Dussetschleger, Dana Farr, Ashok Chaurasia, Martin Cherniack, “Special Issue: Epidemiological Studies of Workplace Musculoskeletal Disorders,” Human Factors: The Journal of the Human Factors and Ergonomics Society, 56; 5, 2/2014. Published, 02/2014.
    http://hfs.sagepub.com/content/56/1.toc
  • Garg A, Boda S, Hegmann KT, Moore JS, Kapellusch JM, Bhoyar P, Thiese MS, Merryweather A, Deckow-Schaefer G, Bloswick D, and Malloy E. “The NIOSH Lifting Equation and Low Back Pain Part 1: Association with Low Back Pain in the BackWorks Prospective Cohort Study”. Human Factors 2014;56(1):6-28. PMID: 24669540. Published, 02/2014.
    http://hfs.sagepub.com/content/56/1/6.short
  • Garg A, Kapellusch JM, Hegmann KT, Moore JS, Boda S, Bhoyar P, Thiese MS, Merryweather A, Gwen Deckow-Schaefer G, Bloswick D, Malloy EJ. “The NIOSH Lifting Equation and Low Back Pain Part 2: Association with Seeking Healthcare in the BackWorks Prospective Cohort Study”. Human Factors 2014;56(1):44-57. PMID: 24669542. Published, 02/2014.
    http://hfs.sagepub.com/content/56/1/44.short
  • An improved OpenSim gait model with multiple degrees of freedom knee joint and knee ligaments. Xu H, Bloswick D, Merryweather A. Comput Methods Biomech Biomed Engin. 2014 Mar 11. [Epub ahead of print] PMID: 24611807 [PubMed - as supplied by publisher]. Accepted, 12/2013.
    http://www.ncbi.nlm.nih.gov/pubmed/24611807
  • Steele, T., Merryweather, A., Bloswick, D., “Manual Material Handling Guidelines for the Shoulder: Biomechanical Support for the Liberty Mutual Tables as Developed by Snook and Ciriello,”. Accepted, 11/2013.
    http://www.sciencedirect.com/science/article/pii/S...
  • Steele, T, Merryweather, A., Dickerson, C., Bloswick, D., “A Computational Study of Shoulder Muscle Forces During Pushing Tasks,” International Journal of Human Factors Modeling and Simulation (IJHFMS), 2013, 4(1):1-22. Published, 08/2013.
    http://www.inderscience.com/info/inarticle.php?art...
  • Kasey O Greenland , Andrew S Merryweather and Donald S Bloswick,The Effect Of Lifting Speed On Cumulative And Peak Biomechanical Loading For Symmetric Lifting Tasks, SH@W, Safety and Health at Work (SH@W), 2013; 4:105-110. Published, 04/12/2013.
    http://www.ncbi.nlm.nih.gov/pmc/articles/PMC373214...
  • Study protocol title: a prospective cohort study of low back pain. Published, 03/07/2013.
    http://www.biomedcentral.com/1471-2474/14/84
  • Steele, T., Merryweather, A., Bloswick, D., “Manual Material Handling Guidelines for the Shoulder: Biomechanical Support for the Liberty Mutual Tables as Developed by Snook and Ciriello,” Accepted to International Journal of Industrial Ergonomics. Accepted, 12/2012.
  • Steele, T, Merryweather, A., Dickerson, C., Bloswick, D., “A Computational Study of Shoulder Muscle Forces During Pushing Tasks,” Accepted to International Journal of Human Factors Modeling and Simulation (IJHFMS). Pending, 12/2012.
  • Pate, M., Merryweather, A., Utah Farm Owner/Operators’ Safety Practices and Risk Awareness Regarding Confined Space Work in Agriculture, Journal of Agricultural Safety and Health 18(4) (October 2012). Published, 10/2012.
  • Hand-arm vibration exposures among craftsmen using impact wrenches for tire changes in a surface mining operation, Scott RYAN, Rodney R. LARSON, Andrew S. MERRYWEATHER, Jeremy BIGGS, Matthew THIESE, Safety and Health at Work (SH@W). Submitted, 07/2012.
  • Garg, A., Hegmann, K., Wertsch, J., Kapellusch, J., Thiese, M., Bloswick, D., Merryweather, A., Sesek, R., Deckow-Schaefer, G., Foster, J., Wood, E., Kendall, R., Sheng, X., Holubkov, R. and Hand Study Team, W. (2012) The WISTAH hand study: A prospective cohort study of distal upper extremity musculoskeletal disorders. BMC Musculoskeletal Disorders. 13, 90. Published, 06/2012.
    http://www.biomedcentral.com/1471-2474/13/90
  • A reverse payback period analysis method for justifying ergonomics investments", Christopher Dockery, Andrew Merryweather, Michael Toellner. Submitted, 03/2012.
  • Merryweather, A.S., MacWilliams, B., Bloswick, D.S., “Validation of a Force Plate System Embedded in Aggregate for Accurate and Reliable Measures of Center of Pressure and Ground Reaction Force,” submitted to Gait and Posture. Revise/resubmit(2), 12/2011.
  • Garg, A., Kapellusch, J.M., Hegmann, K., Wertsch, J., Merryweather, A.S, Deckow-Schaefer, G., Malloy, G. The Strain Index and TLV for HAL: Risk of CTS in a Prospective Cohort. Ergonomics, Dec 2011. In press, 12/2011.
  • K.O. Greenland, L. Yang, P.S. Dyer, R.J. Carson, J. B. Webster, A.S. Merryweather, K.B. Foreman and S.J.M. Bamberg, Prediction of Stance Time and Force Symmetries using Instrumented Shoe Insoles for Use in Rehabilitation and Weight-Bearing Regimens. Journal of Bioengineering & Biomedical Sciences. Nov. 2011; ISSN: 2155–9538. Published, 11/2011.
  • Merryweather, A.; Yoo, B.; Bloswick, D. Gait Characteristics Associated with Trip-Induced Falls on Level and Sloped Irregular Surfaces. Minerals 2011, 1, 109-121. Published, 10/2011.
  • Greenland, Kasey O., Merryweather, Andrew S., Bloswick, Donald S., “Prediction of Peak Back Compressive Forces as a Function of Static Beginning and End of Lift Values and Lifting Speed,” Safety and Health at Work (SH@W), 2(3), 236-242, Sept 2011. Published, 09/2011.
  • Merryweather, A., Yoo, B., Bloswick D., "A Study to Understand Gait Characteristics to Explain Trip-Induced Falls on Railroad Ballast", Human Factors. In progress, 10/2010.
  • A revised back compressive force estimation model for ergonomic evaluation of lifting tasks Journal: Work: A Journal of Prevention, Assessment and Rehabilitation Publisher IOS Press ISSN 1051-9815 (Print) 1875-9270 (Online) Issue Volume 34, Number 3 / 2009 DOI 10.3233/WOR-2009-0924 Pages 263-272 Subject Group Rehabilitation & Assistive Technology. Published, 2009.
    http://iospress.metapress.com/content/m524753j8872...
  • Merryweather, A.S., Bloswick, D., Sesek, R., “A Calculation Of Dynamic Back Compressive Force: A Pilot Study To Identify Load Displacement Velocity Constants”, Journal of SH&E Research Fall 2008. Published, 2008.
    http://www.asse.org/academicsjournal/feature03.php
  • Merryweather, A.S., and Bloswick, D., “Biomechanics during ladder and stair climbing and walking on ramps and other irregular surfaces”, Biomechanics in Ergonomics, 2nd Edition, edited by Shrawan Kumar, 673-694, 2008. Published, 2008.
  • Merryweather, A.S., Lortscher, M.C., Bloswick, D., “A Revised Back Compressive Force Estimation Model for Ergonomic Evaluation of Lifting Tasks”, in Work: A Journal of Prevention, Assessment and Rehabilitation. In press, 2008.