Biddle SJ, Gorely T, Stensel DJ: Health-enhancing physical activity and sedentary behaviour in children and adolescents. J Sports Sci. 2004, Taylor & Francis, 22: 679-701. 10.1080/02640410410001712412.
Google Scholar
Blair SN, LaMonte MJ, Nichaman MZ: The evolution of physical activity recommendations: how much is enough?. Am J Clin Nutr. 2004, 79 (5): 913S-920S.
CAS
PubMed
Google Scholar
Boucard CH, Shepard RJ: Physical Activity, Fitness, and Health: The Model and Key Concepts. Physical Activity, Fitness, and Health. International Proceedings and Consensus Statement. Edited by: C B, RJ S and T S. 1994, Toronto, Human Kinetics, 77-86.
Google Scholar
Caspersen CJ, Christenson GM, Powell KE: Physical activity, exercise, and physical fitness: definitions and distinctions for health-related research. Public Health Rep. 1985, 100: 126-131.
CAS
PubMed
PubMed Central
Google Scholar
Blair SN, Kohl HW, Barlow CE, Paffenbarger RS, Gibbons LW, Macera CA: Changes in Physical-Fitness and All-Cause Mortality - A Prospective-Study of Healthy and Unhealthy Men. JAMA. 1995, 273: 1093-1098. 10.1001/jama.273.14.1093.
Article
CAS
PubMed
Google Scholar
Pate RR, Wang CY, Dowda M, Farrell SW, O'Neill JR: Cardiorespiratory fitness levels among US youth 12 to 19 years of age - Findings from the 1999-2002 National Health and Nutrition Examination Survey. Arch Pediatr Adolesc Med. 2006, 160: 1005-1012. 10.1001/archpedi.160.10.1005.
Article
PubMed
Google Scholar
Blair SN, Cheng Y, Holder JS: Is physical activity or physical fitness more important in defining health benefits?. Med Sci Sports Exerc. 2001, 33: 379-399. 10.1097/00005768-200105001-01549.
Article
Google Scholar
Church TS, Earnest CP, Skinner JS, Blair SN: Effects of different doses of physical activity on cardiorespiratory fitness among sedentary, overweight or obese postmenopausal women with elevated blood pressure - A randomized controlled trial. JAMA. 2007, 297: 2081-2091. 10.1001/jama.297.19.2081.
Article
CAS
PubMed
Google Scholar
Lee IM: Dose-response relation between physical activity and fitness - Even a little is good; More is better. JAMA. 2007, 297: 2137-2139. 10.1001/jama.297.19.2137.
Article
CAS
PubMed
Google Scholar
Kohl HW, Fulton JE, Caspersen CJ: Assessment of physical activity among children and adolescents: A review and synthesis. Prev Med. 2000, 31: 54-76. 10.1006/pmed.1999.0542.
Article
Google Scholar
Kurtze N, Rangul V, Hustvedt BE, Flanders WD: Reliability and validity of self-reported physical activity in the Nord-Trondelag Health Study (HUNT 2). Eur J Epidemiol. 2007
Google Scholar
Kurtze N, Rangul V, Hustvedt BE, Flanders WD: Reliability and validity of self-reported physical activity in the Nord-Trondelag Health Study - HUNT 1. Scand J Publ Health. 2008, 36: 52-61. 10.1177/1403494807085373.
Article
Google Scholar
Warburton DER, Nicol CW, Bredin SD: Health benefits of physical activity: the evidence. Can Med Assoc J. 2006, 174: 801-809. 10.1503/cmaj.051351.
Article
Google Scholar
Kurtze N, Gundersen KT, Holmen J: Self-reported physical activity in population studies - a methodological problem. Nor J Epidemiol. 2003, 13: 163-170.
Google Scholar
King A, Wold B, Tudor-Smith C, Harel Y: 1996, 69: 1-222. The health of youth. A cross national study. WHO Reg Publ Ser.
Booth ML, Okely AD, Chey T, Bauman A: The reliability and validity of the physical activity questions in the WHO health behaviour in schoolchildren (HBSC) survey: a population study. Br J Sports Med. 2001, 35: 263-267. 10.1136/bjsm.35.4.263.
Article
CAS
PubMed
PubMed Central
Google Scholar
Craig CL, Marshall AL, Sjostrom M, Bauman AE, Booth ML, Ainsworth BE, Pratt M, Ekelund U, Yngve A, Sallis JF, Oja P: International physical activity questionnaire: 12-country reliability and validity. Med Sci Sports Exerc. 2003, 35: 1381-1395. 10.1249/01.MSS.0000078924.61453.FB.
Article
PubMed
Google Scholar
Guidelines for the data processing and analysis of theInternational Physical Activity Questionnaire. 2005, [http://www.ipaq.ki.se/ipaq.htm]
Fogelholm M, Malmberg J, Suni J, Santtila M, Kyrolainen H, Mantysaari M, Oja P: International physical activity questionnaire: Validity against fitness. Med Sci Sports Exerc. 2006, 38: 753-760. 10.1249/01.mss.0000194075.16960.20.
Article
PubMed
Google Scholar
Maddison R, Ni Mhurchu C, Jiang Y, Vander Hoorn S, Rodgers A, Lawes CM, Rush E: International Physical Activity Questionnaire (IPAQ) and New Zealand Physical Activity Questionnaire (NZPAQ): A doubly labelled water validation. Int J Behav Nutr Phys Act. 2007, 4: 62-10.1186/1479-5868-4-62.
Article
PubMed
PubMed Central
Google Scholar
Hazzaa MAH: Health-enhancing physical activity among Saudi adults using the International Physical Activity Questionnaire (IPAQ). Public Health Nutrition. 2007, 10: 59-64. 10.1017/S1368980007184299.
Google Scholar
Holmen TL, Barret-Connor E, Clausen J, Langhammer A, Holmen JB: Gender differences in the impact of adolescent smoking on lung function and respiratory symptoms. The Nord-Trøndelag Health study, Norway, 1995-1997. Respir Med. 2002, 96 (10): 796-804. 10.1053/rmed.2002.1350.
Article
CAS
PubMed
Google Scholar
Medbo JI, Mamen A, Welde B, von Heimburg E, Stokke R: Examination of the Metamax I and II oxygen analysers during exercise studies in the laboratory. Scand J Clin Lab Invest. 2002, 62: 585-598. 10.1080/003655102764654321.
Article
CAS
PubMed
Google Scholar
Hustvedt BE, Christophersen A, Johnsen LR, Tomten H, McNeill G, Haggarty PL: Description and validation of the ActiReg®: a novel instrument to measure physical activity and energy expenditure. Br J Nutr. 2004, 92: 1001-1008. 10.1079/BJN20041272.
Article
CAS
PubMed
Google Scholar
Andersen LF, Pollestad ML, Jacobs DR, Lovo A, Hustvedt BE: Validation of a pre-coded food diary used among 13-year-olds: comparison of energy intake with energy expenditure. Public Health Nutrition. 2005, 8: 1315-1321. 10.1079/PHN2005751.
Article
PubMed
Google Scholar
Fredriksen PM, Ingjer F, Nystad W, Thaulow E: Aerobic endurance testing of children and adolescents - a comparison of two treadmill protocols. Scand J Med Sci Sports. 1998, 8: 203-207.
Article
CAS
PubMed
Google Scholar
Mifflin MD, Stjeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO: A new predictive equation for resting energy-expenditure in healthy-individuals. Am J Clin Nutr. 1990, 51: 241-247.
CAS
PubMed
Google Scholar
Ainsworth BE, Haskell WL, Leon AS, Jacobs DR, Montoye HJ, Sallis JF, Paffenbarger RS: Compendium of physical activities - classification of energy costs of human physical activities. Med Sci Sports Exerc. 1993, 25: 71-80. 10.1249/00005768-199301000-00011.
Article
CAS
PubMed
Google Scholar
Food and Agriculture Organization/World Health Organization(WHO)/United Nations University: Energy and protein requirements. Report of a joint Expert Consultation. Geneva. 1985, World Health Organization, Technical Report Series 724.:
Google Scholar
Landis JR, Koch GG: The measurement of observer agreement for categorical data. Biometrics. 1977, 33: 159-174. 10.2307/2529310.
Article
CAS
PubMed
Google Scholar
Treuth MS, Hou NQ, Young DR, Maynard LM: Validity and reliability of the Fels Physical Activity Questionnaire for children. Med Sci Sports Exerc. 2005, 37: 488-495. 10.1249/01.MSS.0000155392.75790.83.
Article
PubMed
Google Scholar
Vanhees L, Lefevre J, Philippaerts R, Martens M, Huygens W, Troosters T, Beunen G: How to assess physical activity? How to assess physical fitness?. Eur J Cardiovasc Prev Rehab. 2005, 12: 102-114. 10.1097/00149831-200504000-00004.
Article
Google Scholar
Ainsworth BE, Bassett DR, Strath SJ, Swartz AM, O'Brien WL, Thompson RW, Jones DA, Macera CA, Kimsey CD: Comparison of three methods for measuring the time spent in physical activity. Med Sci Sports Exerc. 2000, 32: 457-464. 10.1097/00005768-200009001-00004.
Article
Google Scholar
Macfarlane DJ, Lee CCY, Ho EYK, Chan KL, Chan D: Convergent validity of six methods to assess physical activity in daily life. J Appl Physiol. 2006, 101: 1328-1334. 10.1152/japplphysiol.00336.2006.
Article
PubMed
Google Scholar
Eisenmann JC, Strath SJ, Shadrick D, Rigsby P, Hirsch N, Jacobson L: Validity of uniaxial accelerometry during activities of daily living in children. Eur J Appl Physiol. 2004, 91: 259-263. 10.1007/s00421-003-0983-3.
Article
PubMed
Google Scholar
Arvidsson D, Slinde F, Nordenson A, Larsson S, Hulthen L: Validity of the ActiReg system in assessing energy requirement in chronic obstructive pulmonary disease patients. Clin Nutr. 2006, 25: 68-74. 10.1016/j.clnu.2005.09.001.
Article
PubMed
Google Scholar
Myers J, Prakash M, Froelicher V, Do D, Partington S, Atwood JE: Exercise capacity and mortality among men referred for exercise testing. N Engl J Med. 2002, 346: 793-801. 10.1056/NEJMoa011858.
Article
PubMed
Google Scholar
Shephard RJ, Vuillemin A: Limits to the measurement of habitual physical activity by questionnaires. Br J Sports Med. 2003, 37: 197-206. 10.1136/bjsm.37.3.197.
Article
CAS
PubMed
PubMed Central
Google Scholar
Fletcher GF, Balady GJ, Amsterdam EA, Chaitman B, Eckel R, Fleg J, Froelicher VF, Leon AS, Pina IL, Rodney R, Simons-Morton DG, Williams MA, Bazzarre T: Exercise standards for testing and training - A statement for healthcare professionals from the American Heart Association. Circulation. 2001, 104: 1694-1740. 10.1161/hc3901.095960.
Article
CAS
PubMed
Google Scholar
Rognmo O, Hetland E, Helgerud J, Hoff J, Slordahl SA: High intensity aerobic interval exercise is superior to moderate intensity exercise for increasing aerobic capacity in patients with coronary artery disease. Eur J Cardiovasc Prev Rehab. 2004, 11: 216-222. 10.1097/01.hjr.0000131677.96762.0c.
Article
Google Scholar
Mcmurray RG, Ring KB, Treuth MS, Welk GJ, Pate RR, Schmitz KH, Pickrel JL, Gonzalez V, Jaoa M, Almedia CA, Young DR, Sallis JF: Comparison of two approaches to structured physical activity surveys for adolescents. Med Sci Sports Exerc. 2004, 36: 2135-2143. 10.1249/01.MSS.0000147628.78551.3B.
Article
PubMed
PubMed Central
Google Scholar
Florindo AA, Romero A, Peres SV, da Silva MV, Slater B: Development and validation of a physical activity assessment questionnaire for adolescents. Rev Saude Publica. 2006, 40: 802-809.
Article
PubMed
Google Scholar
Ainslie PN, Reilly T, Westerterp KR: Estimating human energy expenditure - A review of techniques with particular reference to doubly labelled water. Sports Med. 2003, 33: 683-698. 10.2165/00007256-200333090-00004.
Article
PubMed
Google Scholar
Pettersen SA, Fredriksen PM, Ingjer F: The correlation between peak oxygen uptake (VO2peak) and running performance in children and adolescents. Aspects of different units. Scand J Med Sci in Sports. 2001, 11: 223-228. 10.1034/j.1600-0838.2001.110405.x.
Article
CAS
Google Scholar
Whitlock EP, Williams SB, Gold R, Smith PR, Shipman SA: Screening and interventions for childhood overweight: A summary of evidence for the US preventive services task force. Pediatrics. 2005, 116: E125-E144. 10.1542/peds.2005-0242.
Article
PubMed
Google Scholar