Research Keywords

  • Physical Activity
  • Sedentary behavior
  • Exercise
  • Behavioral epidemiology
  • Community-based intervention
  • Pediatric Obesity
  • Children and youth

Presentations

  • Barry A, Lee J, Byun W. Accuracy of Accelerometer-based Activity Energy Expenditure Prediction Equations for Children ages 3 to 6 years. (Presentation in a poster session at the 64th American College of Sports Medicine Annual Meeting, May 2017). Presentation, Presented, 05/2017.
  • Little A, An H, Byun W, Lee J. Comparison of Two Commonly Used Metabolic Measurement Systems (Presentation in a poster session at the 64th American College of Sports Medicine Annual Meeting, May 2017). Presentation, Presented, 05/2017.
  • Barry A, Terbizan D, Cristensen B, Byun W. Comparison In Non-wear Time Validation Criteria Between Choi And Troiano For The GT3X+ Activity Monitor (Presentation in a poster session at the 63rd American College of Sports Medicine Annual Meeting, May 2016). Presentation, Presented, 05/2016.
  • Byun W, Barry A, Lee J. Accuracy of the Fitbit for Measuring Preschoolers’ Physical Activity (Presentation in a poster session at the 63rd American College of Sports Medicine Annual Meeting, May 2016). Presentation, Presented, 05/2016.
  • Byun W, Barry A, Lee J, Kim Y. Fitbit Provides Valid Measurements of Sedentary and Physical Activity in Preschool Children (Presentation at the 2016 American Heart Association EPI/Lifestyle Scientific Sessions, Mar 2016). Presentation, Presented, 03/2016.
  • Redenius N, Barry A, Terbizan D, Byun W. Comparison Between The Fitbit Flex And GT3X+ Activity Monitor Under Free-Living Settings (Presentation in a poster session at the 62nd American College of Sports Medicine Annual Meeting, May 2015). Presentation, Presented, 05/2015.
  • Byun W, Redenius N, Hilgers-Greterman S, Kim Y, Larson M, Terbizan DJ. Profiles of Physical Activity and Sedentary Behavior in Cancer Survivors: A 12-Week Community-Based Exercise Program (Presentation in a poster session at the 61th American College of Sports Medicine Annual Meeting, May 2014). Presentation, Presented, 05/2014.
  • Redenius N, Hilgers-Greterman S, Schuna Jr. J, Liguori G, Byun W. Health-related Quality of Life Change in Cancer Survivors Participating a 12-week YMCA Exercise Program (Presentation in a poster session at the 61th American College of Sports Medicine Annual Meeting, May 2014). Presentation, Presented, 05/2014.
  • Ozemek C, Byun W, Riggin K, Strath S, Kaminsky LA. Pedometer Feedback Intervention Increase Total Physical Activity on Days Patients do not Attend Cardiac Rehabilitation (Presentation in a poster session at the 60th American College of Sports Medicine Annual Meeting, May 2013). Presentation, Presented, 05/2013.
  • Williams K, Byun W, Ozemek C, Kaminsky LA. Reliability of Dual-energy X-ray Absorptiometer Measures of Regional Body Composition (Presentation in a poster session at the 60th American College of Sports Medicine Annual Meeting, May 2013). Presentation, Presented, 05/2013.
  • Byun W, Mitchell JA, Whaley MH, Kaminsky LA. Association Between Cardiorespiratory Fitness and Metabolic Risk Factors: An Applicatin of Quantile Regression (Presentation in a poster session at the 60th American College of Sports Medicine Annual Meeting, May 2013). Presentation, Presented, 05/2013.
  • Davis E, Byun W, Ozemek C, Kaminsky LA. Inter-instrument Reliability of GT3X Accelerometers in A Free-living Condition (Presentation in a poster session at the 60th American College of Sports Medicine Annual Meeting, May 2013). Presentation, Presented, 05/2013.
  • Kirschner MM, Wilkerson BS, Ozemek C, Byun W, Leonard A. Kaminsky. Reliability of GT3X Accelerometer Measures From Ankle, Hip, And Wrist Locations (Presentation in a poster session at the 60th American College of Sports Medicine Annual Meeting, May 2013). Presentation, Presented, 05/2013.
  • Griffith G, Ozemek C, Campbell K, Johnson M, Byun W, Kaminsky LA. Physical Activity Levels of Pre-bariatric Surgery Patients: Differences with Activity Count Thresholds (Presentation in a poster session at the 60th American College of Sports Medicine Annual Meeting, May 2013). Presentation, Presented, 05/2013.
  • Ozemek C, Byun W, Riggin K, Strath S, Kaminsky LA. Pedometer Feedback Intervention Increases Time Spent in Moderate-to-Vigorous Physical Activity in Cardiac Rehabilitation Patients (Presentation at the 2013 American Heart Association Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism Meeting, Mar 2013). Presentation, Presented, 03/2013.
  • Kaminsky LA, Ozemek C, Riggin K, Byun W, Strath S. Pedometer Feedback – Superior for Increasing Daily Physical Activity in Cardiac Rehabilitation Patients (Presentation at the 2013 American Heart Association Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism Meeting, Mar 2013). Presentation, Presented, 03/2013.
  • Byun W, Ozemek C, Riggin K, Strath S, Kaminsky LA. Determinants of Objectively Measured Physical Activity in Patients Entering a Phase III Cardiac Rehabilitation Program (Presentation at the 2013 American Heart Association Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism Meeting, Mar 2013). Presentation, Presented, 03/2013.
  • Kaminsky LA, Ozemek C, Riggin K, Byun W, Strath S. Pedometer Feedback – Superior for Increasing Daily Physical Activity in Cardiac Rehabilitation Patients (Presentation at the 2013 American Heart Association Epidemiology and Prevention/Nutrition, Physical Activity and Metabolism Meeting, Mar 2013). Presentation, Presented, 03/2013.
  • Davis E, Byun W, Ozemek C, Kaminsky LA. Reliability of GT3X Accelerometer in Measuring Sedentary Behavior, Physical Activity, and Step Counts (Presentation in a poster session at the 2012 Midwest American College of Sports Medicine Annual Meeting, November 2012). Presentation, Presented, 11/2012.
  • Wilkerson BS, Ozemek C, Byun W, Leonard A. Kaminsky. Reliability of GT3X Measures Made at the Ankle, Hip, and Wrist (Presentation in a poster session at the 2012 Midwest American College of Sports Medicine Annual Meeting, Nov 2012). Presentation, Presented, 11/2012.
  • Griffith G, Ozemek C, Campbell K, Johnson M, Byun W, Kaminsky LA. Physical Activity Characteristics of Pre-bariatric Surgery Patients Assessed by Two Different Sets of Accelerometer Cutpoints (Presentation in a poster session at the 2012 Midwest American College of Sports Medicine Annual Meeting, Nov 2012). Presentation, Presented, 11/2012.
  • Williams K, Byun W, Ozemek C, Kaminsky LA. Reliability of Body Composition Assessments from Dual-Energy X-ray Absorptiometry Measurements.. (Presentation in a poster session at the 2012 Midwest American College of Sports Medicine Annual Meeting, Nov 2012). Presentation, Presented, 11/2012.
  • Byun W, Blair SN, Beets MW, Dowda M, Pate RR. How many days of acceleroemtry monitoring predict sedentary behavior in preschoolers? (Presentation in a poster session at the 59th American College of Sports Medicine Annual Meeting, Jun 2012). Presentation, Presented, 06/2012.
  • Byun W, Bornstein D, Beets MW, Welk G, Dowda M, Pate RR. Accelerometer Cutpoint Non-Equivalence in Preschool Children. (Presentation in a poster session at the 58th American College of Sports Medicine Annual Meeting, Jun 2011). Presentation, Presented, 06/2011.
  • Kim J, Sui X, Byun W, Lee DC, Blair SN. Heart Rate Recovery as a Predictor of Stroke Incidence in Men with Metabolic Syndrome (Presentation in a poster session at the 57th American College of Sports Medicine Annual Meeting, Jun 2010). Presentation, Presented, 06/2010.
  • Sieverdes J, Sui X, Byun W, Blair SN. Independent and Joint Associations of Physical Activity and Cardiorespiratory Fitness and Stroke Mortality (Presentation in a poster session at the 57th American College of Sports Medicine Annual Meeting, Jun 2010). Presentation, Presented, 06/2010.
  • Beets MW, Morgan CF, Banda J, Bornstein D, Byun W, Mitchell JA, Munselle L, Rooney L, Beighle A, Erwin H. Can Pedometers Estimate Moderate-to-Vigorous Physical Activity of Youth? Comparison with Accelerometery (Presentation in a poster session at the 57th American College of Sports Medicine Annual Meeting, Jun 2010). Presentation, Presented, 06/2010.
  • Dowda M, Pfeiffer KA, Brown B, Mitchell JA, Byun W, Pate RR. Parental Influences and Physical Activity of Children Attending Preschools (Presentation in a slide session at the 57th American College of Sports Medicine Annual Meeting, Jun, 2010). Presentation, Presented, 06/2010.
  • Byun W, Sui X, Sieverdes J, Blair SN. Cardiorespiratory fitness and risk of prostate cancer: findings from the ACLS cohort (Presentation in a poster session at the 57th American College of Sports Medicine Annual Meeting, Jun 2010). Presentation, Presented, 06/2010.
  • Byun W, Dowda M, Pate RR. Association between sedentary activity and CVD risk factors in Korean children and adolescents (Presentation in a poster session at the 56th American College of Sports Medicine Annual Meeting, Jun 2009). Presentation, Presented, 06/2009.
  • Byun W, Jung HR, Fee R, Stinson C, Choi H, Kang H, Lee CD. Bone Mineral Density in Combat Sports: Female High School Athletes (Presentation in a slide session at the 53rd American College of Sports Medicine Annual Meeting. Jun 2, 2006). Presentation, Presented, 06/2006.
  • Byun W. Influence of BCAA Administration on Plasma Content and CNS Fatigue during Exercise in Rats (Oral Presentation at the Korean Society for Exercise Nutrition, Nov 2004). Presentation, Presented, 11/2004.

Research Equipment and Testing Expertise

  • ActiGraph Accelerometers.
  • SenseWare Armband activity monitors.
  • Consumer-based activity monitors.
  • Dual-energy X-ray absorptiometry (DXA).
  • Kosmed K4b2 Portable indirect calorimetry.
  • Oxycon Mobile portable indirect calorimetry.

Languages

  • English, fluent.
  • Korean, fluent.

Publications

  • Byun W, Barry A. Energy Expenditure of Free-living Activities in 3- to 6-year-old Children. Journal of Physical Activity and Health. 2016; 13(6 Suppl 1):S3-6. Published, 06/2016.
  • Byun W, Beets MW, Pate RR. Sedentary behavior in preschoolers: How many days of acceleroemter monitoring is needed? Int J Environ Res Public Health. 2015;12(10):13148-13161. Published, 06/2015.
  • Byun W, Ozemek C, Riggin K, Strath S, Kaminsky L. Correlates of objectively measured physical activity in cardiac patients. Cardiovascular diagnosis and therapy. 2014;4(5):406-410. Published, 06/2014.
  • Byun W, Ozemek C, Riggin K, Strath S, Kaminsky L. Correlates of objectively measured physical activity in cardiac patients. Cardiovascular diagnosis and therapy. 2014;4(5):406-410. Published, 06/2014.
  • Pate RR, O'Neill JR, Byun W, McIver KL, Dowda M, Brown WH. Physical activity in preschool children: comparison between Montessori and traditional preschools. J Sch Health. 2014;84(11):716-721. Published, 06/2014.
  • Kaminsky LA, Ozemek C, Williams KL, Byun W. Precision of total and regional body fat estimates from dual-energy X-ray absorptiometer measurements. The journal of nutrition, health & aging. 2014;18(6):591-594. Published, 06/2014.
  • Ozemek C, Kirschner MM, Wilkerson BS, Byun W, Kaminsky LA. Intermonitor reliability of the GT3X+ accelerometer at hip, wrist and ankle sites during activities of daily living. Physiological measurement. 2014;35(2):129-138. Published, 06/2014.
  • Addy CL, Trilk JL, Dowda M, Byun W, Pate RR. Assessing Preschool Children's Physical Activity: How Many Days of Accelerometry Measurement. Pediatr Exerc Sci. 2014;26(1):103-109. Published, 06/2014.
  • Byun W, Liu J, Pate RR. Association between objectively measured sedentary behavior and body mass index in preschool children. Int J Obes (Lond). 2013;37(7):961-965. Published, 06/2013.
  • Byun W, Blair SN, Pate RR. Objectively measured sedentary behavior in preschool children: comparison between Montessori and traditional preschools. Int J Behav Nutr Phys Act. 2013;10:2. Published, 06/2013.
  • Mitchell JA, Byun W. Sedentary Behavior and Health Outcomes in Youth. Am J Lifestyle Med. 2013;8(3):173-199. Published, 06/2013.
  • Taverno Ross SE, Byun W, Dowda M, McIver KL, Saunders RP, Pate RR. Sedentary behaviors in fifth-grade boys and girls: where, with whom, and why? Childhood obesity. 2013;9(6):532-539. Published, 06/2013.
  • Ozemek C, Cochran HL, Strath SJ, Byun W, Kaminsky LA. Estimating relative intensity using individualized accelerometer cutpoints: the importance of fitness level. BMC medical research methodology. 2013;13:53. Published, 06/2013.
  • Byun W, Dowda M, Pate RR. Associations between screen-based sedentary behavior and cardiovascular disease risk factors in Korean youth. Journal of Korean medical science. 2012;27(4):388-394. Published, 06/2012.
  • Kim J, Byun W, Sui X, Lee DC, Cheng YJ, Blair SN. Heart rate recovery after treadmill exercise testing is an independent predictor of stroke incidence in men with metabolic syndrome. Obesity research & clinical practice. 2011;5(4):e267-360. Published, 06/2011.
  • Bornstein DB, Beets MW, Byun W, McIver K. Accelerometer-derived physical activity levels of preschoolers: a meta-analysis. J Sci Med Sport. 2011;14(6):504-511. Published, 06/2011.
  • Pate RR, Trilk JL, Byun W, Wang J. Policies to Increase Physical Activity in Children and Youth. Journal of Exercise Science and Fitness. 2011;9(1):1-14. Published, 06/2011.
  • Byun W, Dowda M, Pate RR. Correlates of objectively measured sedentary behavior in US preschool children. Pediatrics. 2011;128(5):937-945. Published, 06/2011.
  • Bornstein DB, Beets MW, Byun W, et al. Equating accelerometer estimates of moderate-to-vigorous physical activity: in search of the Rosetta Stone. J Sci Med Sport. 2011;14(5):404-410. Published, 06/2011.
  • Byun W, Sui X, Hebert JR, et al. Cardiorespiratory fitness and risk of prostate cancer: findings from the Aerobics Center Longitudinal Study. Cancer epidemiology. 2011;35(1):59-65. Published, 06/2011.
  • Dowda M, Pfeiffer KA, Brown WH, Mitchell JA, Byun W, Pate RR. Parental and environmental correlates of physical activity of children attending preschool. JAMA pediatrics. 2011;165(10):939-944. Published, 06/2011.
  • Beets MW, Morgan CF, Banda JA, Byun W, et al. Convergent validity of pedometer and accelerometer estimates of moderate-to-vigorous physical activity of youth. J Phys Act Health. 2011;8 Suppl 2:S295-305. Published, 06/2011.
  • Byun W, Sieverdes JC, Sui X, et al. Effect of positive health factors and all-cause mortality in men. Med Sci Sports Exerc. 2010;42(9):1632-1638. Published, 06/2010.
  • Choi H, Lee C, Kang H, Byun W, Mal-Ryun Shin, Duk-Za Oh. Bone Mineral Density in Different Types of Sports: Female High School Athletes. Journal of Korean physical education association for girls and women. 2006;20(3):37-44. Published, 06/2006.
  • Yoon S, Byun W. Influence of BCAA Administration on Plasma Content and CNS Fatigue during Exercise in Rats. Korean journal of exercise nutrition. 2005;9(1):65-71. Published, 06/2005.