Epoch length and its effect on physical activity intensity

Medicine and Science in Sports and Exercise

Volumn 42, Issue 5, 2010, Pages 928-934

  Edwardson, Charlotte L ^a   Gorely, Trish ^a  

^a LOUGHBOROUGH UNIVERSITY   (United Kingdom)

Author keywords

Accelerometer; Adolescents; Children; Objective measurement

Indexed keywords

ACTIMETRY; ADOLESCENT; ARTICLE; CHILD; CONFIDENCE INTERVAL; EXERCISE; FEMALE; HUMAN; INFORMATION PROCESSING; MALE; METHODOLOGY; MOTOR ACTIVITY; PHYSIOLOGY; TIME; UNITED KINGDOM;

ACTIGRAPHY; ADOLESCENT; CHILD; CONFIDENCE INTERVALS; DATA COLLECTION; ENGLAND; FEMALE; HUMANS; MALE; MOTOR ACTIVITY; PHYSICAL EXERTION; TIME FACTORS;

EID: 77951431916     PISSN: 01959131     EISSN: 15300315     Source Type: Journal    
DOI: 10.1249/MSS.0b013e3181c301f5     Document Type: Article

References (24)

1. Anderson CB, Hagstromer M, Yngve A. Validation of the PDPAR as an adolescent diary: effect of accelerometer cut points. Med Sci Sports Exerc. 2005;37(7):1224-1230
2. Bailey RC, Olson J, Peper SL, Porszasz J, Barstow TJ, Cooper DM. The level and tempo of children's physical activities: an observation study. Med Sci Sports Exerc. 1995;27(7):1033-1041
3. Bagley S, Salmon J, Crawford D. Family structure and children's television viewing and physical activity. Med Sci Sports Exerc. 2006;38(5):910-918
4. Baquet G, Stratton G, Van Praagh E, Berthoin S. Improving physical activity assessment in prepubertal children with high-frequency accelerometer monitoring: a methodological issue. Prev Med. 2007;44:143-147
5. Berman N, Bailey R, Barstow TJ, Cooper DM. Spectral and bout detection analysis of physical activity patterns in healthy, pre-pubertal boys and girls. Am J Hum Biol. 1998;10:289-297
6. Bland JM, Altman DG. Statistical methods for assessing agreement between two methods of clinical measurement. Lancet. 1986;1:307-310
7. Cliff DP, Reilly JJ, Okley AD. Methodological considerations in using accelerometers to assess habitual physical activity in children aged 0-5 years. J Sci Med Sport. 2009;12:557-567
8. Cradock AL, Wiecha JL, Peterson KE, Sobol AM, Colditz GA, Gortmaker SL. Youth recall and tritrac accelerometer estimates of physical activity levels. Med Sci Sports Exerc. 2004;36(3): 525-532
9. Freedson PS, Sirard J, Debold E. Calibration of the Computer Science and Applications, Inc (CSA) accelerometer. Med Sci Sports Exerc. 1998;30(5):777-781
10. Gorely T, Nevill ME, Morris JG, Stensel DJ, Nevill A. Effect of a school-based intervention to promote healthy lifestyles in 7-11 year old children. Int J Behav Nutr Phys Act. 2009;6:5.
11. Guinhouya CB, Hubert H, Soubrier S, Vilhelm C, Lemdani M, Durocher A. Moderate-to-vigorous physical activity among children: discrepancies in accelerometry-based cut-off points. Obesity. 2006;14:774-777
12. McClain JJ, Abraham TL, Brusseau TA, Tudor-Locke C. Epoch length and accelerometer outputs in children: comparison to direct observation. Med Sci Sports Exerc. 2008;40(12):2080-2087
13. Mattocks C, Ness A, Leary S, et al. Use of accelerometers in large field-based study of children: protocols, design issues, and effects on precision. J Phys Act Health. 2008;5:S98-S111.
14. Mota J, Valente M, Aires L, Silva P, Santos MP, Ribeiro JC. Accelerometer cut-points and youth physical activity prevalence. Eur Phy Educ Rev. 2007;13:287-299
15. Ness AR, Leary SD, Mattcocks C, et al. Objectively measured physical activity and fat mass in a large cohort of children. PLoS Med. 2007;4(3):e97.
16. Nilsson A, Ekelund E, Yngve A, Sjöström M. Assessing physical activity among children with accelerometers using different time sampling intervals and placements. Pediatr Exerc Sci. 2002; 14:87-96.
17. Reilly JJ, Penpraze V, Hislop J, Davies G, Grant S, Paton JY. Objective measurement of physical activity and sedentary behaviour: a review with new data. Arch Dis Child. 2008;93:614-619
18. Ridgers ND, Stratton G, Fairclough SJ, Twisk JWR. Children's physical activity levels during school recess: a quasi-experimental intervention study. Int J Behav Nutr Phys Act. 2007;4:19.
19. Rowlands AV, Powell SM, Humpreys R, Eston RG. The effect of accelerometer epoch on physical activity output measures. J Exerc Sci Fit. 2006;4(1):52-58
20. Treuth MS, Catellier DJ, Schmitz KH, et al. Weekend and weekday patterns of physical activity in overweight and normal-weight adolescent girls. Obesity. 2007;15:1782-1788
21. Trost SG, Mciver KL, Pate RR. Conducting accelerometer-based activity assessment in field-based research. Med Sci Sports Exerc. 2005;37(11):S531-43.
22. Trost SG, Pate RR, Freedson PS, Sallis JF, Taylor WC. Using objective physical activity measures with youth: how many days of monitoring are needed? Med Sci Sports Exerc. 2000;32(2): 426-431
23. Ward DS, Evenson KR, Vaughan A, Rodgers AB, Troiano RP. Accelerometer use in physical activity: best practices and research recommendations. Med Sci Sports Exerc. 2005;37(11 suppl): S582-8.
24. Welk GJ, Almeida J, Morss G. Laboratory calibration and validation of the biotrainer and actitrac activity monitors. Med Sci Sports Exerc. 2003;35(6):1057-1064