Research Publications on Assessment of Physical Activity
- Welk, G. J., Saint-Maurice, P. F., Kim, Y., Ellingson, L. D., Hibbing, P., Wolff-Hughes, D. L., & Perna, F. M. (2017). Understanding and interpreting error in physical activity data: insights from the FLASHE study. American journal of preventive medicine, 52(6), 836-838.
- Kim, Y., Hibbing, P., Saint-Maurice, P. F., Ellingson, L. D., Hennessy, E., Wolff-Hughes, D. L., & Welk, G. J. (2017). Surveillance of youth physical activity and sedentary behavior with wrist accelerometry. American Journal of Preventive Medicine, 52(6), 872-879.
- Saint-Maurice, P. F., Kim, Y., Hibbing, P., Oh, A. Y., Perna, F. M., & Welk, G. J. (2017). Calibration and validation of the Youth Activity Profile: the FLASHE study. American Journal of Preventive Medicine, 52(6), 880-887.
- Kim, Y., & Welk, G. J. (In Press). The accuracy of the 24-h activity recall method for assessing sedentary behaviour: the physical activity measurement survey (PAMS) project. Journal of Sports Sciences. 35(3):255-261.
- An, H.S, Jones, G.C., Kang, S.K., Welk, G.J. & Lee, J.M. (In Press). How valid are wearable physical activity trackers for measuring steps? European Journal of Sports Science.
- Ellingson, L. D., Schwabacher, I. J., Kim, Y., Welk, G. J., & Cook, D. B. (2016). Validity of an Integrative Method for Processing Physical Activity Data. Medicine and Science in Sports and Exercise, 48(8):1629-38.
- Saint-Maurice, P. F., Welk, G. J., Bartee, R. T., & Heelan, K. (2016). Calibration of context-specific survey items to assess youth physical activity behaviour. Journal of Sports Sciences, June 1-7.
- Saint-Maurice, P. F., Kim, Y., & Welk, G. J. (2016). Evidence for data missing at random in youth physical activity monitoring research. Journal of Sports Sciences, April: 1-7.
- Hibbing, P. R., Kim, Y., Saint-Maurice, P. F., & Welk, G. J. (2016). Impact of activity outcome and measurement instrument on estimates of youth compliance with physical activity guidelines: a cross-sectional study. BMC Public Health, 16(1), 1.
- Bai, Y., Welk G.J., Nam, Y.H., Lee, J.A., Lee, J.M., Kim, Y., Meier, N.F., & Dixon, P.M. (2016). Comparison of consumer and research monitors under semi-structured settings. Medicine & Science in Sports & Exercise, 48(1):151-8.
- Tucker, J. M., Welk, G. J., Beyler, N. K., & Kim, Y. (2016). Associations Between Physical Activity and Metabolic Syndrome: Comparison Between Self-Report and Accelerometry. American Journal of Health Promotion, 30(3):155-62.
- Saint-Maurice, P. F., Kim, Y., Welk, G. J., & Gaesser, G. A. (2016). Kids are not little adults: what MET threshold captures sedentary behavior in children? European Journal of Applied Physiology, 116(1), 29-38.
- Shook, R. P., Gribben, N. C., Hand, G. A., Paluch, A. E., Welk, G. J., Jakicic, J. M. & Blair, S. N. (2016). Subjective Estimation of Physical Activity Using the IPAQ Varies by Fitness Level. Journal of Physical Activity & Health. 13(1), 79-86.
- Lee, J. M., Kim, Y., Bai, Y., Gaesser, G. A., & Welk, G. J. (2016). Validation of the SenseWear Mini Armband in Children during Semi-Structure Activity Settings. Journal of Science and Medicine in Sport, 19(1):41-5. PMID: 25459233
- Lee, J. M., Kim, Y. W., Kwon, Y. S., Derrick, T. R., & Welk, G. J. (2015). Feasibility of calibrating smartphone to access physical activity. The Korean Journal of Measurement and Evaluation in Physical Education and Sport Science, 17(3), 1-10.
- Kim, Y., & Welk, G. J. (2015). Characterizing the context of sedentary lifestyles in a representative sample of adults: a cross-sectional study from the physical activity measurement study project. BMC Public Health, 15(1), 1.
- Saint-Maurice, P. F., & Welk, G. J. (2015). Validity and Calibration of the Youth Activity Profile. PloS one, 10(12).
- Kim, Y., Welk, G. J., Braun, S. I., & Kang, M. (2015). Extracting objective estimates of sedentary behavior from accelerometer data: measurement considerations for surveillance and research applications. PloS one, 10(2), e0118078.
- Kim, Y., & Welk, G. J. (2015). Criterion Validity of Competing Accelerometry-based Activity Monitoring Devices. Medicine and Science in Sports and Exercise. 47(11):2456-63.
- Welk, G. J., & Kim, Y. (2015). The Context of Physical Activity in a Representative Sample of Adults. Medicine and Science in Sports and Exercise. 47(10): 2102-2110.
- Laurson, K. R., Welk, G. J., & Eisenmann, J. C. (2015). Estimating physical activity in children: impact of pedometer wear time and metric. Journal of Physical Activity & Health, 12(1), 124-131.
- Kim, Y., Welk, G. J., Braun, S. I., & Kang, M. (2015). Extracting objective estimates of sedentary behavior from accelerometer data: measurement considerations for surveillance and research applications. PloS one, 10(2), e0118078.
- Beyler, N., Fuller, W., Nusser, S., & Welk, G. (2015). Predicting objective physical activity from self-report surveys: a model validation study using estimated generalized least-squares regression. Journal of Applied Statistics, 42(3), 555-565.
- Kim, Y., Crouter, S. E., Lee, J. M., Dixon, P. M., Gaesser, G. A., & Welk, G. J. (2014). Comparisons of prediction equations for estimating energy expenditure in youth. Journal of Science and Medicine in Sport. doi: 10.1016/j.jsams.2014.10.002. PMID: 25459235
- Saint-Maurice, P. F., & Welk, G. J. (2014). Web-Based Assessments of Physical Activity in Youth: Considerations for Design and Scale Calibration. Journal of medical Internet research, 16(12). PMID: 25448192
- Calabro, M. A., Kim, Y., Franke, W. D., Stewart, J. M., & Welk, G. J. (2014). Objective and subjective measurement of energy expenditure in older adults: a doubly labeled water study. European Journal of Clinical Nutrition. doi:10.1038/ejcn.2014.241 PMID: 25351651
- Calabró, M. A., Lee, J. M., Saint-Maurice, P. F., Yoo, H., & Welk, G. J. (2014). Validity of physical activity monitors for assessing lower intensity activity in adults. International Journal of Behavioral Nutrition and Physical Activity, 11(1), 119. PMID: 25260625
- Saint-Maurice, P. F., Welk, G. J., Beyler, N. K., Bartee, R. T., & Heelan, K. A. (2014). Calibration of self-report tools for physical activity research: the Physical Activity Questionnaire (PAQ). BMC Public Health, 14(1), 461. PMID: 24886625
- Lee, J. M., Kim, Y., & Welk, G. J. (2014). Validity of Consumer-Based Physical Activity Monitors. Medicine and Science in Sports and Exercise. Sep;46(9):1840-8. PMID: 24777201.
- Welk, G. J., Kim, Y., Stanfill, B., Osthus, D. A., Calabro, A. M., Nusser, S. M., & Carriquiry, A. (2014). Validity of 24-h Physical Activity Recall: Physical Activity Measurement Survey. Medicine and Science in Sports and Exercise. 46(10), 2014-2024. PMID: 24561818
- Lee, J.M., Kim, Y., & Welk, G.J. (2014). Validity and utility of consumer based physical activity monitors. ACSM's Health & Fitness Journal. 18(4): 16-21
- Chen, S., Zhu, X., Welk, G.J., Kim, Y., Lee, J., & Meier, N.F. (2014). Using Sensewear armband and diet journal to promote adolescents’ energy balance knowledge and motivation. Journal of Sport and Health Science. 3(4): 326-332.
- Calabro, M.A., Stewart, J.M., Welk, G.J. (2013). Validation of pattern-recognition monitors in children using doubly labeled water. Medicine and Science in Sports and Exercise. 45(7): 1313-1322. PMID: 23299766
- Smith KM, Lanningham-Foster LM, Welk GJ, Campbell CG. (2012). Validity of the SenseWear® Armband to predict energy expenditure in pregnant women. Medicine and Science in Sports and Exercise. 2012 Oct;44(10):2001-8. PMID: 22617395
- Nusser SM, Beyler NK, Welk GJ, Carriquiry AL, Fuller WA, King B MN.(2012). Modeling errors in physical activity recall data. Journal of Physical Activity and Health. 9 (Suppl 1):S56-67.
- Troiano RP, Pettee Gabriel KK, Welk GJ, Owen N, Sternfeld B. (2012). Reported physical activity and sedentary behavior: why do you ask? Journal of Physical Activity and Health. 9 (Suppl 1):S68-75.
- Welk, G.J., McClain, J., & Ainsworth, B.E. (2012). Protocols for evaluating equivalency of accelerometry-based activity monitors. Medicine and Science in Sports and Exercise. 44: S39-49. PMID: 22157773.
- Tucker J.M., Welk, G.J. & Beyler, N.K. (2011). Physical activity in U.S.: adults compliance with the Physical Activity Guidelines for Americans. American Journal of Preventive Medicine. 40(4):454-61. PMID: 21406280.
- Harrington, D.M., Welk, G.J. & Donnelly, A.E. (2011). Validation of MET estimates and step measurement using the ActivPAL physical activity logger. Journal of Sports Science. 29(6):627-33. PMID: 21360402
- Rowe, D. A., Welk, G. J., Heil, D. P., Mahar, M. T., Kemble, C. D., Calabro, M. A. et al. (2011). Stride rate recommendations for moderate-intensity walking. Medicine and Science in Sports and Exercise. 43, 312-318. PMID: 20543754
- Tucker, J. M., Welk, G., Nusser, S. M., Beyler, N. K., & Dzewaltowski, D. (2011). Estimating minutes of physical activity from the previous day physical activity recall: validation of a prediction equation. Journal of Physical Activity and Health. 8, 71-78.
- Johannsen, D.L., Calabro, M.A., Stewart, J., Franke, W., Rood, J.C. and Welk, G.J. (2010). Accuracy of armband monitors for measuring daily energy expenditure in healthy adults. Medicine and Science in Sports and Exercise. Vol. 42, No. 11, pp. 2134-2140, PMID: 20386334
- Martínez-Gómez D, Wärnberg J, Welk GJ, Sjöström M, Veiga OL, Marcos A. (2010).Validity of the Bouchard activity diary in Spanish adolescents. Public Health Nutrition. 2010 Feb;13(2):261-8. PMID: 19758479
- Wickel EE, Welk GJ. (2010). Applying Generalizability Theory to Estimate Habitual Activity Levels. Medicine and Science in Sports and Exercise 42(8):1528-34. PMID: 20139788
- Calabro MA, Welk GJ, Beyler N, Carriquiry AL, Nusser SM, Matthews CE. (2009). Validation of a computerized 24 hour physical activity recall (24hPAR) instrument with pattern recognition activity monitors. Journal of Physical Activity and Health. 6(2):211-20. PMID: 19420399
- Calabro, M.A., Welk, G.J., Eisenmann. (2009). Validation of the Sensewear Pro armband monitor algorithms in children. Medicine and Science in Sports and Exercise. Sep;41(9):1714-20.PMID: 19657300
- Welk, G.J. (2008). The role of physical activity assessments for school-based physical activity promotion. Measurement in Physical Education and Exercise Science. 12: 184-206.
- Welk, G.J., Eisenmann, J.C., Trost, S., Schaben, J.W., Dale, D.D. (2007) Calibration of the Biotrainer Pro Activity Monitor for Youth using Receiver Operator Characteristic (ROC) Curves. Pediatric Exercise Science, 19, 145-158. PMID: 17603138
- Welk, G.J., McClain, J., Eisenmann, J.C., Wickel, E.E., Beier, S. & Flakol, P. (2007). Field Validation of the MTI and BodyMedia monitors usingthe IDEEA monitor. Obesity, 15, 918-928. PMID: 17426327
- Welk, G.J., Wickel, E., Petersen, M., Heitzler, C.D., Fulton, J.E., Poitter, L. (2007). Validity and Reliability of the Youth Media Campaign Longitudinal Survey. Medicine and Science in Sports and Exercise, 39(4), 612-621. PMID: 17414798
- Wickel, E.E., Welk, G.J., & Eisenmann, J.C. (2006). Concurrent validation of the Bouchard diary with an accelerometry-based activity monitor. Medicine and Science in Sports and Exercise, 38(2): 373-379. PMID: 16531909
- Welk, G.J. (2005). Principles of design and analyses for the calibration of accelerometry-based activity monitors. Medicine and Science in Sports and Exercise 37: S501-S511. PMID: 16294113
- McMurray, R.G., Ring, K.B. Treuth, M.S., Welk, G.J., Pate, R.R., Schmitz, M.K. Pickrel, J., Gonzalez, V., Almedia, M.J.C.A., Rohm Young, D., & Sallis, J.F. (2004). Comparison of two approaches to structured physical activity surveys for adolescents. Medicine and Science in Sports and Exercise, 36(12):2135-2143. PMID: 15570151
- Welk, G.J., Dzewaltowski, D.A., Ryan, G.J., Sepulveda-Jowers, E.M., & Hill, J.L. (2004). Comparison of the computerized ACTIVITYGRAM instrument and the Previous Day Physical Activity Recall for assessing physicial activity in children. Research Quarterly for Exercise and Sport, 75(4): 370-380. PMID: 15673036
- Welk, G.J., Morrow, J., & Schaben, J.A. (2004) Reliability of four accelerometry-based activity monitors: A generalizability study. Medicine and Science in Sports and Exercise 36(9), 1637-1645. PMID: 15354049
- Welk, G.J., Almeida, J., & Morss, G. (2003). Laboratory calibration and validation of the Biotrainer and Actitrac activity monitors. Medicine and Science in Sports and Exercise, 35, 1057-1064. PMID: 12783056
- Welk, G.J., Thompson, R.W. & Galper, D.I. (2001). A temporal validation of scoring algorithms for the 7-day physical activity recall. Measurement in Exercise Science and Physical Education, 5(3), 123-138.
- Welk, G.J., Differding, J.A., Thompson, R.W., Blair, S.N., Dziura, J., & Hart, P. (2000). The utility of the Digi-Walker step counter to assess daily physical activity patterns. Medicine and Science in Sports and Exercise, 32(9), S481-S488. PMID: 10993418
- Welk, G.J., Blair, S.N., Wood, K., Jones, S., & Thompson, K.W. (2000). A comparative evaluation of three accelerometry-based physical activity monitors. Medicine and Science in Sports and Exercise, 32(9), S489-S497. PMID: 10993419
- Welk, G.J., Corbin, C.B., & Dale, D. (2000) Measurement issues for the assessment of physical activity in children. Research Quarterly for Exercise and Sport, 71(2 Suppl), S59-S73. PMID:10925827
- Welk, G.J., Corbin, C.B. & Kampert, J. (1998). The validity of the Tritrac-R3D activity monitor for the assessment of physical activity in children II: temporal relationships among objective assessments. Research Quarterly for Exercise and Sport, 69, 395-399. PMID: 9864757
- Welk, G.J., & Corbin, C.B. (1995). The validity of the Tritrac-R3D activity monitor for the assessment of physical activity in children. Research Quarterly for Exercise and Sport, 66, 202-209. PMID: 7481081