References
- ActiGraph. (2019). User guide: ActiGraph GT9X link + ActiLife. https://s3.amazonaws.com/actigraphcorp.com/wp-content/uploads/2019/02/04090343/ActiGraph_Link_UserGuide_02012019_Revision3.pdf
- Aittasalo, M., Vähä-Ypyä, H., Vasankari, T., Husu, P., Jussila, A.-M., & Sievänen, H. (2015). Mean amplitude deviation calculated from raw acceleration data: A novel method for classifying the intensity of adolescents’ physical activity irrespective of accelerometer brand. BMC Sports Science, Medicine and Rehabilitation, 7(1), 18. https://doi.org/10.1186/s13102-015-0010-0
- Bakrania, K., Yates, T., Rowlands, A. V., Esliger, D. W., Bunnewell, S., Sanders, J., Edwardson, C. L., Edwardson, C. L., & Davies, M. (2016). Intensity thresholds on raw acceleration data: Euclidean norm minus one (ENMO) and mean amplitude deviation (MAD) approaches. PloS One, 11(10), e0164045. https://doi.org/10.1371/journal.pone.0164045
- Cain, K. L., Conway, T. L., Adams, M. A., Husak, L. E., & Sallis, J. F. (2013). Comparison of older and newer generations of ActiGraph accelerometers with the normal filter and the low frequency extension. International Journal of Behavioral Nutrition and Physical Activity, 10(1), 51. https://doi.org/10.1186/1479-5868-10-51
- Corder, K., Brage, S. R., Ramachandran, A., Snehalatha, C., Wareham, N., & Ekelund, U. (2007). Comparison of two Actigraph models for assessing free-living physical activity in Indian adolescents. Journal of Sports Sciences, 25(14), 1607–1611. https://doi.org/10.1080/02640410701283841
- De Almeida Mendes, M., Da Silva, I. C. M., Ramires, V., Reichert, F., Martins, R., & Tomasi, E. (2017). Calibration of raw accelerometer data to measure physical activity: A systematic review. Gait & Posture, 61(1), 98–110. https://doi.org/10.1016/j.gaitpost.2017.12.028
- Ellis, K., Kerr, J., Godbole, S., Staudenmayer, J., & Lanckriet, G. (2016). Hip and wrist accelerometer algorithms for free-living behavior classification. Medicine and Science in Sports and Exercise, 48(5), 933. https://doi.org/10.1249/MSS.0000000000000840
- Fairclough, S. J., Noonan, R., Rowlands, A. V., Van Hees, V., Knowles, Z., & Boddy, L. M. (2016). Wear compliance and activity in children wearing wrist- and hip-mounted accelerometers. Medicine and Science in Sports and Exercise, 48(2), 245–253. https://doi.org/10.1249/MSS.0000000000000771
- Farrahi, V., Niemelä, M., Kangas, M., Korpelainen, R., & Jämsä, T. (2018). Calibration and validation of accelerometer-based activity monitors: A systematic review of machine-learning approaches. Gait & Posture, 68(1), 285–299. https://doi.org/10.1016/j.gaitpost.2018.12.003
- Freedson, P., Bowles, H. R., Troiano, R., & Haskell, W. (2012). Assessment of physical activity using wearable monitors: Recommendations for monitor calibration and use in the field. Medicine and Science in Sports and Exercise, 44(Suppl 1), S1. https://doi.org/10.1249/MSS.0b013e3182399b7e
- Freedson, P. S., Melanson, E., & Sirard, J. (1998). Calibration of the computer science and applications, Inc. accelerometer. Medicine and Science in Sports and Exercise, 30(5), 777–781. https://doi.org/10.1097/00005768-199805000-00021
- Gamer, M., Lemon, J., Fellows, I., & Singh, P. (2012). irr: Various coefficients of interrater reliability and agreement. (Version 0.84) [R package]. http://www.idg.pl/mirrors/CRAN/web/packages/irr/irr.pdf
- Grydeland, M., Hansen, B. H., Ried-Larsen, M., Kolle, E., & Anderssen, S. A. (2014). Comparison of three generations of ActiGraph activity monitors under free-living conditions: Do they provide comparable assessments of overall physical activity in 9-year old children? BMC Sports Science, Medicine and Rehabilitation, 6(1), 26. https://doi.org/10.1186/2052-1847-6-26
- Hänggi, J. M., Phillips, L. R., & Rowlands, A. V. (2013). Validation of the GT3X ActiGraph in children and comparison with the GT1M ActiGraph. Journal of Science and Medicine in Sport, 16(1), 40–44. https://doi.org/10.1016/j.jsams.2012.05.012
- Hibbing, P. (2018). AGread: Read data files from ActiGraph monitors. (Version 0.2.0). [R package] https://cran.r-project.org/web/packages/AGread/AGread.pdf
- Hildebrand, M., Hansen, B. H., Van Hees, V. T., & Ekelund, U. (2017). Evaluation of raw acceleration sedentary thresholds in children and adults. Scandinavian Journal of Medicine & Science in Sports, 27(12), 1814–1823. https://doi.org/10.1111/sms.12795
- Hildebrand, M., Van Hees, V. T., Hansen, B. H., & Ekelund, U. (2014). Age group comparability of raw accelerometer output from wrist- and hip-worn monitors. Medicine and Science in Sports and Exercise, 46(9), 1816–1824. https://doi.org/10.1249/MSS.0000000000000289
- Hwang, J., Fernandez, A., & Lu, A. (2018). Application and validation of activity monitors’ epoch lengths and placement sites for physical activity assessment in exergaming. Journal of Clinical Medicine, 7(9), 268. https://doi.org/10.3390/jcm7090268
- Jason, L. A., Tryon, W. W., Frankenberry, E., & King, C. (1997). Chronic fatigue syndrome: Relationships of self-ratings and actigraphy. Psychological Reports, 81(Suppl 3), 1223–1226. https://doi.org/10.2466/pr0.1997.81.3f.1223
- John, D., & Freedson, P. (2012). ActiGraph and Actical physical activity monitors: A peek under the hood. Medicine and Science in Sports and Exercise, 44(Suppl 1), S86. https://doi.org/10.1249/MSS.0b013e3182399f5e
- John, D., Tyo, B., & Bassett, D. R. (2010). Comparison of four ActiGraph accelerometers during walking and running. Medicine and Science in Sports and Exercise, 42(2), 368–374. https://doi.org/10.1249/MSS.0b013e3181b3af49
- Kaminsky, L. A., & Ozemek, C. (2012). A comparison of the Actigraph GT1M and GT3X accelerometers under standardized and free-living conditions. Physiological Measurement, 33(11), 1869. https://doi.org/10.1088/0967-3334/33/11/1869
- Kelly, L. A., McMillan, D. G., Anderson, A., Fippinger, M., Fillerup, G., & Rider, J. (2013). Validity of actigraphs uniaxial and triaxial accelerometers for assessment of physical activity in adults in laboratory conditions. BMC Medical Physics, 13(1), 5. https://doi.org/10.1186/1756-6649-13-5
- Kozey, S. L., Staudenmayer, J. W., Troiano, R. P., & Freedson, P. S. (2010). A comparison of the ActiGraph 7164 and the ActiGraph GT1M during self-paced locomotion. Medicine and Science in Sports and Exercise, 42(5), 971. https://doi.org/10.1249/MSS.0b013e3181c29e90
- Lakens, D. (2017). TOSTER: Two one-sided tests (TOST) equivalence testing. (Version 0.2.5) [R package]. https://cran.r-project.org/web/packages/TOSTER/TOSTER.pdf
- Lakens, D., Scheel, A. M., & Isager, P. M. (2018). Equivalence testing for psychological research: A tutorial. Advances in Methods and Practices in Psychological Science, 1(2), 259–269. https://doi.org/10.1177/2515245918770963
- Lee, K.-Y., Macfarlane, D. J., & Cerin, E. (2013). Comparison of three models of actigraph accelerometers during free living and controlled laboratory conditions. European Journal of Sport Science, 13(3), 332–339. https://doi.org/10.1080/17461391.2011.643925
- Loprinzi, P. D., & Smith, B. (2017). Comparison between wrist-worn and waist-worn accelerometry. Journal of Physical Activity & Health, 14(7), 539–545. https://doi.org/10.1123/jpah.2016-0211
- Mackintosh, K. A., Montoye, A. H., Pfeiffer, K. A., & McNarry, M. A. (2016). Investigating optimal accelerometer placement for energy expenditure prediction in children using a machine learning approach. Physiological Measurement, 37(10), 1728–1740. https://doi.org/10.1088/0967-3334/37/10/1728
- McHugh, M. L. (2012). Interrater reliability: The kappa statistic. Biochemia Medica, 22(3), 276–282. https://doi.org/10.11613/BM.2012.031
- Menai, M., Van Hees, V. T., Elbaz, A., Kivimaki, M., Singh-Manoux, A., & Sabia, S. (2017). Accelerometer assessed moderate-to-vigorous physical activity and successful ageing: Results from the Whitehall II study. Scientific Reports, 7(1), 45772. https://doi.org/10.1038/srep45772
- Migueles, J. H., Cadenas-Sanchez, C., Ekelund, U., Nyström, C. D., Mora-Gonzalez, J., Löf, M., Labayen, I., Ruiz, J. R., & Ortega, F. B. (2017). Accelerometer data collection and processing criteria to assess physical activity and other outcomes: A systematic review and practical considerations. Sports Medicine, 47(9), 1821–1845. https://doi.org/10.1007/s40279-017-0716-0
- Miller, J. (2015). Cross-generation accuracy. https://s3.amazonaws.com/actigraphcorp.com/wp-content/uploads/2018/03/11163743/cross-generation-accuracy.pdf
- Montoye, A. H., Moore, R. W., Bowles, H. R., Korycinski, R., & Pfeiffer, K. A. (2016). Reporting accelerometer methods in physical activity intervention studies: A systematic review and recommendations for authors. British Journal of Sports Medicine, 52(23), 1507–1516. https://doi.org/10.1136/bjsports-2015-095947
- Montoye, A. H., Nelson, M. B., Bock, J. M., Imboden, M. T., Kaminsky, L. A., Mackintosh, K. A., Mcnarry, M. A., & Pfeiffer, K. A. (2018). Raw and count data comparability of hip-worn ActiGraph GT3X+ and link accelerometers. Medicine and Science in Sports and Exercise, 50(5), 1103–1112. https://doi.org/10.1249/MSS.0000000000001534
- Ried-Larsen, M., Brønd, J. C., Brage, S., Hansen, B. H., Grydeland, M., Andersen, L. B., & Møller, N. C. (2012). Mechanical and free living comparisons of four generations of the Actigraph activity monitor. International Journal of Behavioral Nutrition and Physical Activity, 9(1), 113. https://doi.org/10.1186/1479-5868-9-113
- Robusto, K. M., & Trost, S. G. (2012). Comparison of three generations of ActiGraph activity monitors in children and adolescents. Journal of Sports Science, 30(13), 1429–1435. https://doi.org/10.1080/02640414.2012.710761
- Romanzini, M., Petroski, E. L., Ohara, D., Dourado, A. C., & Reichert, F. F. (2014). Calibration of ActiGraph GT3X, Actical and RT3 accelerometers in adolescents. European Journal of Sport Science, 14(1), 91–99. https://doi.org/10.1080/17461391.2012.732614
- Rothney, M. P., Apker, G. A., Song, Y., & Chen, K. Y. (2008). Comparing the performance of three generations of Actigraph accelerometer. Journal of Applied Physiology, 105(4), 1091–1097. https://doi.org/10.1152/japplphysiol.90641.2008
- Rowlands, A. V., Mirkes, E. M., Yates, T. E., Clemes, S. A., Davies, M. J., Khunti, K., & Edwardson, C. L. (2018). Accelerometer-assessed physical activity in epidemiology: Are monitors equivalent? Medicine and Science in Sports and Exercise, 50(2), 257–265. https://doi.org/10.1249/MSS.0000000000001435
- Rowlands, A. V., Yates, T., Davies, M., Khunti, K., & Edwardson, C. L. (2016). Raw accelerometer data analysis with GGIR R-package: Does accelerometer brand matter? Medicine and Science in Sports and Exercise, 48(10), 1935–1941. https://doi.org/10.1249/MSS.0000000000000978
- Safrit, M. J., & Wood, T. M. (1995). Introduction to measurement in physical education and exercise science. St. Louis. Mosby Inc.
- Santos-Lozano, A., Santín-Medeiros, F., Cristi-Montero, C., Jaén-Jiménez, R., Casajús, J. A., & Garatachea, N. (2016). GT1M, GT3X and ActiTrainer counts comparison during standardized activities in young, adults and older adults. Nutrición Hospitalaria, 33(3), 692–697. https://doi.org/10.20960/nh.280
- Sasaki, J. E., John, D., & Freedson, P. S. (2011). Validation and comparison of ActiGraph activity monitors. Journal of Science and Medicine in Sport, 14(5), 411–416. https://doi.org/10.1016/j.jsams.2011.04.003
- Steel, C., Bejarano, C., & Carlson, J. A. (2019). Time drift considerations when using GPS and accelerometers. Journal for the Measurement of Physical Behaviour, 2(3), 203–207. https://doi.org/10.1123/jmpb.2019-0004
- Tanha, T., Tornberg, Å., Dencker, M., & Wollmer, P. (2013). Accelerometer measured daily physical activity and sedentary pursuits–comparison between two models of the Actigraph and the importance of data reduction. BMC Research Notes, 6(1), 439. https://doi.org/10.1186/1756-0500-6-439
- Tanha, T., Tornberg, Å. B., Wollmer, P., & Dencker, M. (2013). Head‐to‐head comparison between Actigraph 7164 and GT 1M accelerometers in adolescents. Clinical Physiology and Functional Imaging, 33(2), 162–165. https://doi.org/10.1111/cpf.12003
- Troiano, R. P., Berrigan, D., Dodd, K. W., Masse, L. C., Tilert, T., & McDowell, M. (2008). Physical activity in the United States measured by accelerometer. Medicine and Science in Sports and Exercise, 40(1), 181–188. https://doi.org/10.1249/mss.0b013e31815a51b3
- Tryon, W. W., & Williams, R. (1996). Fully proportional actigraphy: A new instrument. Behavior Research Methods, Instruments, & Computers, 28(3), 392–403. https://doi.org/10.3758/BF03200519
- Van Domelen, D. R., & Pittard, W. S. (2014). Flexible R functions for processing accelerometer data, with emphasis on NHANES 2003–2006. The R Journal, 6(2), 52. https://doi.org/10.32614/RJ-2014-024
- Van Hees, V. F. Z., Zhao, J., Heywood, J., Mirkes, E., Sabia, S., & Migueles, J. (2019). GGIR: Raw accelerometer data analysis. https://doi.org/10.5281/zenodo.1051064
- Van Hees, V. T., Fang, Z., Langford, J., Assah, F., Mohammad, A., Da Silva, I. C., Trenell, M. I., White, T., Wareham, N. J., & Brage, S. (2014). Auto-calibration of accelerometer data for free-living physical activity assessment using local gravity and temperature: An evaluation on four continents. American Journal of Physiology-Heart and Circulatory Physiology, 117(7), 738–744. https://doi.org/10.1152/japplphysiol.00421.2014
- Van Hees, V. T., Gorzelniak, L., Leon, E. C. D., Eder, M., Pias, M., Taherian, S., Horsch, A., Franks, P. W., Horsch, A., Brage, S., & Ekelund, U. (2013). Separating movement and gravity components in an acceleration signal and implications for the assessment of human daily physical activity. PloS One, 8(4), e61691. https://doi.org/10.1371/journal.pone.0061691
- Vanhelst, J., Mikulovic, J., Bui-Xuan, G., Dieu, O., Blondeau, T., Fardy, P., & Béghin, L. (2012). Comparison of two ActiGraph accelerometer generations in the assessment of physical activity in free living conditions. BMC Research Notes, 5(1), 187. https://doi.org/10.1186/1756-0500-5-187
- Whitaker, K. M., Pettee, K. G., Jacobs, J. D., Sidney, S., & Sternfeld, B. (2018). Comparison of two generations of ActiGraph accelerometers: The CARDIA study. Medicine and Science in Sports and Exercise, 50(6), 1333–1340. https://doi.org/10.1249/MSS.0000000000001568