References

1. Bailey RC, Olson J, Peper SL, et al. The level and tempo of children’s physical activities: an observation study. Medicine and Science in Sports and Exercise 1995; 27(7): 1033-41.

2. Gabel L, Proudfoot NA, Obeid J, et al. Step count targets corresponding to new physical activity guidelines for the early years. Medicine and Science in Sports and Exercise 2013; 45(2): 314-8.

3.  Obeid J, Nguyen T, Gabel L, Timmons BW. Physical activity in Ontario preschoolers: prevalence and measurement issues. Applied Physiology, Nutrition and Metabolism 2011, 36: 291-7.

4.  Vale S, Santos R, Soares-Miranda L, et al. Preschool children physical activity measurement: importance of epoch length choice. Pediatric Exercise Science 2009; 21: 413-20.

5.  Tremblay MS, Leblanc A, Carson V, et al. Canadian physical activity guidelines for the early years (aged 0-4 years). Applied Physiology, Nutrition and Metabolism 2012, 37: 345-69.

6.  Colley RC, Garriguet D, Adamo KB, et al. Physical activity and sedentary behaviour during the early years in Canada: A cross-sectional study. International Journal of Behavioral Nutrition and Physical Activity 2013; 10: 54.

7.  Adolph AL, Puyau MR, Vohra FA, et al. Validation of uniaxial and triaxial accelerometers for the assessment of physical activity in preschool children. Journal of Physical Activity and Health 2012; 9: 944-53.

8.  Kim Y, Beets MW, Pate RR, Blair SN. The effect of reintegrating Actigraph accelerometer counts in preschool children: Comparison using different epoch lengths. Journal of Science in Medicine and Sport 2012; 16(2): 129-34.

9.  Edwardson CL, Gorely T. Epoch length and its effect on physical activity intensity. Medicine and Science in Sports and Exercise 2010; 42(5): 928-34.

10. Nilsson A, Ekelund U, Yngve A, Sjostrom M. Assessing physical activity among children with accelerometers using different time sampling intervals and placements. Pediatric Exercise Science 2002; 14: 87-96.

11.  Pfeiffer KA, McIver KL, Dowda M, et al. Validation and calibration of the Actical accelerometer in preschool children. Medicine and Science in Sports and Exercise 2006; 38: 152-7.

12.  Pfeiffer KA, Dowda M, McIver KL, Pate RR. Factors related to objectively measured physical activity in preschool children. Pediatric Exercise Science 2009; 21(2): 196-208.

13.  Wong SL, Colley RC, Connor Gorber S, Tremblay MS. Actical accelerometer sedentary activity threshold for adults. Journal of Physical Activity and Health 2011; 8: 587-91.

14. Colley RC, Garriguet D, Janssen I, et al. Physical activity of Canadian children and youth: Accelerometer results from the 2007 to 2009 Canadian Health Measures Survey. Health Reports 2011; 22(1): 15-23.

15.  Colley RC, Garriguet D, Janssen I, et al. Physical activity of Canadian adults: Accelerometer results from the 2007 to 2009 Canadian Health Measures Survey. Health Reports 2011; 22(1): 7-14.

16.  Colley RC, Gorber SC, Tremblay MS. Quality control and data reduction procedures for accelerometry-derived measures of physical activity. Health Reports 2010, 21: 63-9.

17.  Rosenkranz RR, Rosenkranz SK, Weber C. Validity of the Actical accelerometer step-count function in children. Pediatric Exercise Science 2011; 23: 355-65.

18. Pagels P, Boldemann C, Raustorp A. Comparison of pedometer and accelerometer measures of physical activity during preschool time on 3- to 5-year-old children. Acta Paediatrica 2011; 100: 116-20.

19.  Cardon G, De Bourdeaudhuij I. Comparison of pedometer and accelerometer measures of physical activity in preschool children. Pediatric Exercise Science 2007; 19: 205-14.

20.  Crouter SE, Schneider PL, Karabulut M, Bassett DR Jr. Validity of 10 electronic pedometers for measuring steps, distance, and energy cost. Medicine and Science in Sports and Exercise 2003; 35(8): 1455-60.

21. Esliger DW, Probert A, Connor Gorber S, et al. Validity of the Actical accelerometer step count function. Medicine and Science in Sports and Exercise 2007; 39(7): 1200-4.

22.  McClain JJ, Abraham TL, Brusseau TA Jr, Tudor-Locke C. Epoch length and accelerometer outputs in children: comparison to direct observation. Medicine and Science in Sports and Exercise 2008; 40(12): 2080-7.