Comparison of steps and energy expenditure assessment in adults of Fitbit Tracker and Ultra to the Actical and indirect calorimetry

References

• Colditz, G.A., 1999, Economic costs of obesity and inactivity. Medicine & Science in Sports & Exercise, 31, S663–667
   PubMed Web of Science ®Google Scholar
• Physical Activity Guidelines Advisory Committee. Physical Activity Guidelines Advisory Committee Report, 2008. Washington, DC: U.S. Department of Health and Human Services, 2008
   Google Scholar
• Blair, S.N., and Brodney, S., 1999, Effects of physical inactivity and obesity on morbidity and mortality: Current evidence and research issues. Medicine & Science in Sports & Exercise, 31, S646–S662
   PubMed Web of Science ®Google Scholar
• Wei, M., Kampert, J.B., Barlow, C.E., Nichaman, M.Z., Gibbons, L.W., Paffenbarger, R.S. Jr, and Blair, S.N., 1999, Relationship between low cardiorespiratory fitness and mortality in normal-weight, overweight, and obese men. Journal of the American Medical Association, 282, 1547–1553
   PubMed Web of Science ®Google Scholar
• Li, T.Y., Rana, J.S., Manson, J.E., Willett, W.C., Stampfer, M.J., Colditz, G.A., Rexrode, K.M., and Hu, F.B., 2006, Obesity as compared with physical activity in predicting risk of coronary heart disease in women. Circulation, 113, 499–506
   PubMed Web of Science ®Google Scholar
• Marshall, S., and Gyi, D., 2010, Evidence of health risks from occupational sitting: Where do we stand? American Journal of Preventive Medicine, 39, 389–391
   PubMed Web of Science ®Google Scholar
• Van Uffelen, J.G., Wong, J., Chau, J.Y., Van Der Ploeg, H.P., Riphagen, I., Gilson, N.D., Burton, N.W., Healy, G.N., Thorp, A.A., Clark, B.K., Gardiner, P.A., Dunstan, D.W., Bauman, A., Owen, N., and Brown, W.J., 2010, Occupational sitting and health risks: A systematic review. American Journal of Preventive Medicine, 39, 379–388
   PubMed Web of Science ®Google Scholar
• Owen, N., Healy, G.N., Matthews, C.E., and Dunstan, D.W., 2010, Too much sitting: The population health science of sedentary behavior. Exercise & Sports Sciences Reviews, 38, 105–113
   PubMed Web of Science ®Google Scholar
• Tammelin, T., 2009, Lack of physical activity and excessive sitting: Health hazards for young people? Jornal de Pediatria, 85, 283–285
   Google Scholar
• Brage, S., Wedderkopp, N., Franks, P.W., Andersen, L.B., and Froberg, K., 2003, Reexamination of validity and reliability of the CSA monitor in walking and running. Medicine & Science in Sports & Exercise, 35, 1447–1454
   PubMed Web of Science ®Google Scholar
• Crouter, S.E., Churilla, J.R., and Bassett, D.R. Jr, 2006, Estimating energy expenditure using accelerometers. European Journal of Applied Physiology, 98, 601–612
   PubMed Web of Science ®Google Scholar
• Crouter, S.E., Dellavalle, D.M., Horton, M., Haas, J.D., Frongillo, E.A., and Bassett, D.R. Jr, 2010, Validity of the Actical for estimating free-living physical activity. European Journal of Applied Physiology, 111, 1381–1389
   Google Scholar
• Cuberek, R., El Ansari, W., Fromel, K., Skalik, K., and Sigmund, E., 2010, A comparison of two motion sensors for the assessment of free-living physical activity of adolescents. International Journal of Environmental Research and Public Health, 7, 1558–1576
   PubMed Web of Science ®Google Scholar
• Esliger, D.W., Probert, A., Gorber, S.C., Bryan, S., Laviolette, M., and Tremblay, M.S., 2007, Validity of the Actical accelerometer step-count function. Medicine & Science in Sports & Exercise, 39, 1200–1204
   PubMed Web of Science ®Google Scholar
• Esliger, D.W., and Tremblay, M.S., 2006, Technical reliability assessment of three accelerometer models in a mechanical setup. Medicine & Science in Sports & Exercise, 38, 2173–2181
   PubMed Web of Science ®Google Scholar
• Freedson, P.S., Melanson, E., and Sirard, J., 1998, Calibration of the Computer Science and Applications, Inc. accelerometer. Medicine & Science in Sports & Exercise, 30, 777–781
   PubMed Web of Science ®Google Scholar
• Heil, D.P., 2006, Predicting activity energy expenditure using the Actical activity monitor. Research Quarterly for Exercise & Sport, 77, 64–80
   PubMed Web of Science ®Google Scholar
• Hendelman, D., Miller, K., Baggett, C., Debold, E., and Freedson, P., 2000, Validity of accelerometry for the assessment of moderate intensity physical activity in the field. Medicine & Science in Sports & Exercise, 32, S442–S449
   PubMed Web of Science ®Google Scholar
• Herrmann, S.D., Hart, T.L., Lee, C.D., and Ainsworth, B.E., 2011, Evaluation of the MyWellness Key accelerometer. British Journal of Sports Medicine, 45, 109–113
   Google Scholar
• Le Masurier, G.C., and Tudor-Locke, C., 2003, Comparison of pedometer and accelerometer accuracy under controlled conditions. Medicine & Science in Sports & Exercise, 35, 867–871
   PubMed Web of Science ®Google Scholar
• Leenders, N.Y., Nelson, T.E., and Sherman, W.M., 2003, Ability of different physical activity monitors to detect movement during treadmill walking. British Journal of Sports Medicine, 24, 43–50
   Google Scholar
• Lyden, K., Kozey, S.L., Staudenmeyer, J.W., and Freedson, P.S., 2011, A comprehensive evaluation of commonly used accelerometer energy expenditure and MET prediction equations. European Journal of Applied Physiology, 111, 187–201
   PubMed Web of Science ®Google Scholar
• Macfarlane, D.J., Lee, C.C., Ho, E.Y., Chan, K.L., and Chan, D., 2006, Convergent validity of six methods to assess physical activity in daily life. Journal of Applied Physiology, 101, 1328–1334
   PubMed Web of Science ®Google Scholar
• Nichols, J.F., Morgan, C.G., Chabot, L.E., Sallis, J.F., and Calfas, K.J., 2000, Assessment of physical activity with the Computer Science and Applications, Inc., accelerometer: Laboratory versus field validation. Research Quarterly for Exercise & Sport, 71, 36–43
   PubMed Web of Science ®Google Scholar
• Spierer, D.K., Hagins, M., Rundle, A., and Pappas, E., 2011, A comparison of energy expenditure estimates from the Actiheart and Actical physical activity monitors during low intensity activities, walking, and jogging. European Journal of Applied Physiology, 111, 659–667
   PubMed Web of Science ®Google Scholar
• Stone, M.R., Esliger, D.W., and Tremblay, M.S., 2007, Comparative validity assessment of five activity monitors: Does being a child matter? Pediatric Exercise Science, 19, 291–309
   PubMed Web of Science ®Google Scholar
• Swartz, A.M., Strath, S.J., Bassett, D.R. Jr, O'brien, W.L., King, G.A., and Ainsworth, B.E., 2000, Estimation of energy expenditure using CSA accelerometers at hip and wrist sites. Medicine & Science in Sports & Exercise, 32, S450–S456
   PubMed Web of Science ®Google Scholar
• Welk, G.J., Schaben, J.A., and Morrow, J.R. Jr, 2004, Reliability of accelerometry-based activity monitors: A generalizability study. Medicine & Science in Sports & Exercise, 36, 1637–1645
   PubMed Web of Science ®Google Scholar
• FITBIT. 2011, (Fitbit, Inc.). Available online at: http://www.fitbit.com/. Accessed 20 July 2011
   Google Scholar
• Montgomery-Downs, H.E., Insana, S.P., and Bond, J.A., 2012, Movement toward a novel activity monitoring device. Sleep Breaths 16, 913–917
   PubMed Web of Science ®Google Scholar
• Baecke, J.A., Burema, J., and Frijters, J.E., 1982, A short questionnaire for the measurement of habitual physical activity in epidemiological studies. American Journal of Clinical Nutrition, 36, 936–942
   PubMed Web of Science ®Google Scholar
• Craig, C.L., Marshall, A.L., Sjostrom, M., Bauman, A.E., Booth, M.L., Ainsworth, B.E., Pratt, M., Ekelund, U., Yngve, A., Sallis, J.F., and Oja, P., 2003, International physical activity questionnaire: 12-country reliability and validity. Medicine & Science in Sports & Exercise, 35, 1381–1395
   PubMed Web of Science ®Google Scholar
• Brown, W.J., Trost, S.G., Bauman, A., Mummery, K., and Owen, N., 2004, Test-retest reliability of four physical activity measures used in population surveys. Journal of Science & Medicine in Sport/Sports Medicine Australia, 7, 205–215
   Web of Science ®Google Scholar
• Husswirth, C., Bigard, A., and Le Chevalier, J.M., 1997, The Cosmed K4 telemetry system as an accurate device for oxygen uptake measurements during exercise. British Journal of Sports Medicine, 18, 449–453
   Google Scholar
• Mclaughlin, J.E., King, G.A., Howley, E.T., Bassett, D.R. Jr, and Ainsworth, B.E., 2001, Validation of the COSMED K4 b2 portable metabolic system. British Journal of Sports Medicine, 22, 280–284
   Google Scholar
• Schrack, J.A., Simonsick, E.M., and Ferrucci, L., 2010, Comparison of the Cosmed K4b(2) portable metabolic system in measuring steady-state walking energy expenditure. PloS One, 5, e9292
   PubMed Web of Science ®Google Scholar
• Garber, C.E., Blissmer, B., Deschenes, M.R., Franklin, B.A., Lamonte, M.J., Lee, I.M., Nieman, D.C., and Swain, D.P., 2011, American College of Sports Medicine position stand. Quantity and quality of exercise for developing and maintaining cardiorespiratory, musculoskeletal, and neuromotor fitness in apparently healthy adults: Guidance for prescribing exercise. Medicine & Science in Sports & Exercise, 43, 1334–1359
   PubMed Web of Science ®Google Scholar