Sample of Publications

Gregory J. Welk, Ph.D.

Iowa State University

 

 

DATA-BASED RESEARCH PUBLICATIONS

1)      Welk, G.J., McClain, J., Ainsworth, B.E. 2010. Protocols for evaluating equivalency of accelerometry-based activity monitors. Medicine and Science in Sports and Exercise. In Press.

2)      Martínez-Gómez D, Welk GJ, Puertollano MA, Del-Campo J, Moya JM, Marcos A, Veiga OL. 2010. Associations of physical activity with muscular fitness in adolescents. Scand J Med Sci Sports. 2009 Dec 18. [Epub ahead of print]PMID: 20030783.

3)      Johannsen, D.L., Calabro, M.A., Stewart, J., Franke, W., Rood, J.C. and Welk, G.J. 2010. Accuracy of armband monitors for measuring daily energy expenditure in healthy adults. Med Sci Sports Exerc. 2010 Apr 8. [Epub ahead of print]PMID: 20386334

4)      Martínez-Gómez D, Wärnberg J, Welk GJ, Sjöström M, Veiga OL, Marcos A. 2010.Validity of the Bouchard activity diary in Spanish adolescents.Public Health Nutr. 2010 Feb;13(2):261-8. Epub 2009 Sep 17.PMID: 19758479

5)      Wickel EE, Welk GJ. 2010. Applying Generalizability Theory to Estimate Habitual Activity Levels. Medicine and Science in Sports and Exercise Feb 4. [Epub ahead of print]PMID: 20139788

6)      Martínez-Gómez D, Puertollano MA, Wärnberg J, Calabro MA, Welk GJ, Sjöström M, Veiga OL, Marcos A. 2009. Comparison of the ActiGraph accelerometer and Bouchard diary to estimate energy expenditure in Spanish adolescents. Nutr Hosp. 2009 Nov-Dec;24(6):701-10.PMID: 20049374 [PubMed

7)      Ihmels, M.A., Welk, G.J., Eisenmann, J.C., and Nusser, S. M. (2009). Development and preliminary validation of a Family Nutrition and Physical Activity (FNPA) screening tool. International Journal of Behavioral Nutrition and Physical Activity. 6:14. PMID: 19284631

8)      Calabro MA, Welk GJ, Beyler N, Carriquiry AL, Nusser SM, Matthews CE. (2009). Validation of a computerized 24 hour physical activity recall (24hPAR) instrument with pattern recognition activity monitors. Journal of Physical Activity and Health. 6(2):211-20. PMID: 19420399

9)      Ihmels, M.A., Welk, G.J., Eisenmann, J.C., Nusser, S.M., and Myers, E.F. (2009). Prediction of BMI change in young children with the family nutrition and physical activity (FNPA) screening tool. Ann Behav Med. 2009 Aug;38(1):60-68. PMID: 19806417

10)  Dzewaltowski, D.A., Estabrooks, P.A., Welk, G.J., Hill, J., Milliken, G., Karteriolitis, K., and Johnston, J.A. (2009). Healthy Youth Places: A randomized controlled trial to determine the effectiveness of facilitating adult and youth leaders to promote physical activity and fruit and vegetable consumption in middle schools. 36(3):583-600. PMID: 18469366

11)  Gentile, D.A., Welk, G., Eisenmann, J.C., Reimer, R.A,, Walsh, D.A., Russell, D.W., Callahan, R., Walsh, M., Strickland, S., and Fritz, K. 2009. Evaluation of a multiple ecological level child obesity prevention program: Switch what you Do, View, and Chew. BMC Med. 18;7:49+. PMID: 19765270

12)  Wickel, E.E., Eisenmann, J.C. and Welk, G.J. 2009. Maturity-related variation in moderate-to-vigorous physical activity among 9-14 year olds. Journal of Physical Activity and Health, 6(5):597-605. PMID: 19953836

13)  Calabro, M.A., Welk, G.J., Eisenmann. (2009). Validation of the Sensewear Pro Armband Monitor Algorithms in Children. Medicine and Science in Sports and Exercise. Sep;41(9):1714-20.PMID: 19657300

14)  Heelan, K.A., Abbey, B.M., Donnelly, J.E., Mayo, M.S., and Welk, G.J. (2009). Evaluation of a walking school bus for promoting physical activity in youth. Journal of Physical Activity and Health. In Press. 6(5):560-7.PMID: 19953832

15)  Martinez-Gomez D, Tucker J, Heelan KA, Welk GJ, Eisenmann JC. 2009. Associations between sedentary behavior and blood pressure in young children. Arch Pediatr Adolesc Med. 2009 Aug;163(8):724-30.PMID: 19652104

16)  Martínez-Gómez D, Welk GJ, Calle ME, Marcos A, Veiga OL. 2009. Preliminary evidence of physical activity levels measured by accelerometer in Spanish adolescents: the AFINOS Study. Nutr Hosp. 2009 Mar-Apr;24(2):226-32.PMID: 19593496

17)  Laurson, K.R., Eisenmann J.C., Welk, G.J., Wickel, E.E., Gentile, D.A., and Walsh, D.A. (2008).   Combined influence of physical activity and screen time recommendations on childhood overweight. Journal of Pediatrics, Aug;153(2):209-14. PMID: 18534231

18)  Eisenmann, J.C., Gentile, D.A., Welk, G.J., Callahan, R., Strickland, S., Walsh, M. and Walsh, D.A. (2008). SWITCH:  rationale, design, and implementation of a community, school, and family-based intervention to modify behaviors related to childhood obesity. BMC Public Health, 8:223 (29 Jun 2008).

19)  Eisenmann JC, Bartee RT, Smith DT, Welk GJ, Fu Q. 2008. Combined influence of physical activity and television viewing on the risk of overweight in US youth. Int J Obes (Lond). 2008 Apr;32(4):613-8. Epub 2008 Jan 22.PMID: 18209737

20)  Johannsen, D.L. Welk, G.J., Sharp, R.L., & Flakoll, P.J. (2008). Differences in daily energy expenditure in lean and obese women: The role of posture allocation. Obesity, 16(1): 34-39.

21)  Joens-Matre, R.R., Welk, G.J., Calabro, M.A., Russell, D.W., Nicklay, E. and Hensley, L.D. (2008). Rural-Urban Differences in Physical Activity, Physical Fitness, and Overweight Prevalence of Children, Journal of Rural Health, 24(1) 49-54.

22)  Laurson K.R., Eisenmann, J.C., Welk, G.J., Wickel, E.E., Gentile, D.A., and  Walsh, D.A. (2008). Evaluation of youth pedometer-determined physical activity guidelines using receiver operator characteristic curves. Preventive Medicine, 46(5):419-24.

23)  Eisenmann, J.C.; Welk, G.J.; Wickel, E.E., and Blair, S.N. (2007). Combined influence of cardiorespiratory fitness and body mass index on cardiovascular disease risk factors in 8-18 year old youth: The Aerobic Center Longitudinal Study. International Journal of Pediatric Obesity 2:66-72.

24)  Wickel, E.E., Eisenmann, J.C., and Welk, G.J. (2007). Predictive validity of an age-specific MET equation among youth of varying body size. European Journal of Applied Physiology 101(5):555-63

25)  Eisenmann, J.C., Welk, G.J., Ihmels, M., Dollman, J. (2007). Fatness, fitness, and cardiovascular disease risk factors in children and adolescents Medicine and Science in Sports and Exercise, 39(8):1251-6.PMID: 17762357

26)  Pate, R.R.; Stevens, J., Pratt, C., Sallis, J. Schmitz, K.H., Webber, L.S. Welk, G.J.,Young, D.R. Objectively Measured Physical Activity in 6th Grade Girls (2007). Archives of Pediatrics & Adolescent Medicine. 160, 1262-1268.

27)  Dzewaltowski, D. A. Karteroliotis, K.  Welk, G.J., Sy, O., Gyurcsik, N. C., Hill, J.L., Johnston, J.A., & Estabrooks, P.A. (2007). Self and Proxy Efficacy Measures for Middle School Youth Physical Activity and Fruit and Vegetable Consumption. Journal of Sport and Exercise Psychology, 29, 310-332.

28)  Welk, G.J., Eisenmann, J.C., Trost, S., Schaben, J.W., Dale, D.D. (2007) Calibration of the Biotrainer Pro Activity Monitor for Youth using Receiver Operator Characteristic (ROC) Curves. Pediatric Exercise Science, 19, 145-158.

29)  Welk, G.J., McClain, J., Eisenmann, J.C., Wickel, E.E., Beier, S. & Flakol, P. (2007). Convergent Validation of the MTI and BodyMedia monitors against the IDEEA monitor. Obesity, 15, 918-928.

30)  Welk, G.J., Wickel, E., Petersen, M., Heitzler, C.D., Fulton, J.E., Poitter, L. (2007). Validity and Reliability of the Youth Media Campaign Longitudinal Survey. Medicine and Science in Sports and Exercise, 39(4), 612-621.

31)  Eisenmann, J.C., Welk, G.J., Ihmels, M., and Dollman, J. (2007). Fatness, fitness, and cardiovascular disease risk factors in children and adolescents. Medicine and Science in Sports and Exercise, 39(8): 1251-1256.

32)  Wickel, E.E., Welk, G.J., & Eisenmann, J.C. (2006). Concurrent validation of the Bouchard diary with an accelerometry-based activity monitor. Medicine and Science in Sports and Exercise, 38(2): 373-379.

33)  Schaben, J.A., Welk, G.J., Joens-Matre, R., & Hensley, L. (2006). Reliability and validity of the children and youth physical activity correlates scale in children and adolescents. Journal of Physical Activity and Health, 3(1): 59-69.

34)  Mahar, M.T., Welk, G.J., Rowe, D.A., Crotts, D.J., & McIver, K.L. (2006). Development and validation of a regression model to estimate VO2peak from PACER 20-m shuttle run performance. Journal of Physical Activity and Health, 3(2): S34-S46.

35)  McClain, J., Welk, G.J., Ihmels, M., Schaben, J.W. (2006). Comparison of two versions of the PACER aerobic fitness test. Journal of Physical Activity and Health, 3(2): S47-S57.

36)  Ihmels, M., Welk, G.J., & McClain, J. (2006). Reliability and convergent validity of field tests of body composition in young adolescents. Journal of Physical Activity and Health, 3(2): S67-S77.

37)  Dishman, R.K., Motl, R.W., Sallis, J.F., Dunn, A., Birnbaum, A. Welk, G. Bedimo-Rung, A., Voorhees, C. & Jobe, J. (2005). Self-management strategies mediate the association of self-efficacy with physical activity. American Journal of Preventive Medicine. 29(1):10-18.

38)  Eisenmann, J.C., Wickel, E.E., Welk, G.J., & Blair, S.N. (2005). Relationship between adolescent fitness and fatness and cardiovascular disease risk factors in adulthood: the Aerobics Center Longitudinal Study. American Heart Journal, 149:46-53.

39)  Voorhees, C.C., Murray, D, Welk, G.J., Birnbaum, A., Ribisl, K.M., Johnson, C.C., Pfeiffer, K.A., Saksvig, B.,  Jobe, & J.B. (2005). The role of peer social network factors and physical activity in adolescent girls. American Journal of Health Behavior, 29(2):183-190.

40)  Welk, G.J., & Eklund, B. (2005). Validation of the Children and Youth Physical Self-Perception Profile in young children: A confirmatory factor analysis. Psychology of Sports and Exercise, 6(1), 51-65.

41)  Eisenmann, J.C.; Heelan, K., & Welk, G.J. (2004). Assessing body composition among 3 to 8 year-old children: anthropometry, BIA, and DXA. Obesity Reseaerch, 12: 1633-1640. PMID: 15536227

42)  McMurray, R.G., Ring, K.B. Treuth, M.S., Welk, G.J., Pate, R.R., Schmitz, M.K.  Pickrel,  J., Gonzalez, V., Almedia, M.J.C.A., Rohm Young, D., & Sallis, J.F. (2004). Comparison of two approaches to structured physical activity surveys for adolescents. Medicine and Science in Sports and Exercise, 36(12):2135-2143. PMID: 15570151

43)  Welk, G.J., Schaben, J.A., & Shelley, M. (2004). Physical activity and physical fitness in children schooled at home and children attending public schools. Pediatric Exercise Science, 16(4): 310-323.

44)  Eisenmann, J.C., Wickel, E.E.Welk, G.J., & Blair, S.N. (2004). Stability of risk factors associated with the metabolic syndrome from adolescence into adulthood. American Journal of Human Biology, 16(6): 690-696.

45)  Welk, G.J., Dzewaltowski, D.A., Ryan, G.J., Sepulveda-Jowers, E.M., & Hill, J.L.  (2004). Convergent validity of the Previous Day Physical Activity Recall and the ACTIVITYGRAM Assessment. Research Quarterly for Exercise and Sport, 75(4): 370-380. PMID: 15673036

46)  Welk, G.J., Morrow, J., & Schaben, J.A. (2004) Reliability of four accelerometry-based activity monitors: A generalizability study. Medicine and Science in Sports and Exercise 36(9), 1637-1645.

47)  Welk, G.J., & Schaben, J. (2004). Psychosocial correlates of physical activity in children – A study of relationships when children have similar opportunities to be active. Measurement in Exercise Science and Physical Education, 8(2): 63-81.

48)  Welk, G.J., Almeida, J., & Morss, G. (2003). Laboratory calibration and validation of the Biotrainer and Actitrac activity monitors. Medicine and Science in Sports and Exercise, 35, 1057-1064.

49)  Welk, G.J.; Wood, K. & Morss, G. (2003). Parental influences on physical activity in children: An exploration of potential mechanisms. Pediatric Exercise Science, 15, 19-33.

50)  Welk, G.J., Thompson, R.W. & Galper, D.I. (2001). A temporal validation of scoring algorithms for the 7-day physical activity recall. Measurement in Exercise Science and Physical Education, 5(3), 123-138.

51)  Welk, G.J., Differding, J.A., Thompson, R.W., Blair, S.N., Dziura, J., & Hart, P. (2000). The utility of the Digi-Walker step counter to assess daily physical activity patterns. Medicine and Science in Sports and Exercise, 32(9), S481-S488.

52)  Welk, G.J., Blair, S.N., Wood, K., Jones, S., & Thompson, K.W. (2000).  A comparative evaluation of three accelerometry-based physical activity monitors.  Medicine and Science in Sports and Exercise, 32(9), S489-S497.

53)  Welk, G.J., Corbin, C.B. & Kampert, J. (1998). The validity of the Tritrac-R3D activity monitor for the assessment of physical activity in children II: temporal relationships among objective assessments. Research Quarterly for Exercise and Sport, 69, 395-399.       

54)  Welk, G.J., Corbin, C.B., Dowell, M.N., & Harris, H. (1997). The validity and reliability of two different versions of the children and youth physical self-perception profile. Measurement in Physical Education and Exercise Science, 1, 163-177.

55)  Eklund, R.C., Whitehead, J.R., & Welk, G.J. (1997). Validity of the Children and Youth Physical Self-Perception Profile: A confirmatory factor analysis. Research Quarterly for Exercise and Sport, 68, 249-256.

56)  Welk, G.J., & Corbin, C.B. (1995). The validity of  the Tritrac-R3D activity monitor for the assessment of physical activity in children. Research Quarterly for Exercise and Sport, 66, 202-209.

57)  Welk, G.J., Corbin, C.B., & Lewis, L. (1995). Physical self-perceptions in high school athletes. Pediatric Exercise Science, 7, 152-161.

58)  Horswill, C.A., Miller, J.E., Scott, J.R., Welk, G., & Van Handel, P (1992). Anaerobic and aerobic power in arms and legs of elite senior wrestlers. International Journal of Sports Medicine, 8(13), 558-561.

59)  Balon, T.W., & Welk, G.J. (1991). Effects of prior exercise on the thermic effect of glucose and fructose. Journal of Applied Physiology, 70(4), 1463-1468. 

60)  Murphy, S., Minor, R.L. Jr., Welk, G., & Harrison, D.G. (1991). CNS astroglial cells release nitrogen oxide(s) with vasorelaxant properties.  Journal of Cardiovascular Pharmacology, 17, S265-S268.

61)  Murphy, S., Minor, R.L. Jr., Welk, G., & Harrison, D.G. (1990).  Evidence for an astrocyte-derived relaxing factor with properties similar to nitric oxide. Journal of Neurochemistry, 55, 349-351.

62)  Murphy, S., & Welk G. (1990). Serotonin inhibits ATP-induced mobilization of arachidonic acid but not phosphoinositide turnover in astrocytes. Neuroscience Letters, 109, 152-156.

63)  Murphy, S., Welk, G., & Thwin, S.S. (1990).  Stimulation of thromboxane release from primary cell cultures derived from human astrocyte glioma biopsies. Glia, 3, 205-211.

64)  Murphy, S., & Welk, G. (1989). Arachidonic acid evokes inositol phospholipid hydrolysis in astrocytes.  FEBS Letters, 257(1), 68-70.

65)  Balon, T.W., & Welk, G. (1989).  Enhancement of dietary-induced thermogenesis by prior exercise is not carbohydrate specific or insulin dependent. The Physiologist, 32(4), 230.

66)  Groppel, J.L., Shin, I.S., Thomas, J., & Welk, G.J. (1987). The effects of string type and tension on impact in midsized and oversized tennis racquets. International Journal of Sport Biomechanics, 3(1), 40-46.

RESEARCH-BASED REVIEW ARTICLES

1)      Welk, G.J.; McClain, J. and Ainsworth, B.E.  (2010). Protocols for Evaluating Equivalency of Accelerometry-Based Activity Monitors (2010). Medicine and Science in Sports and Exercise, In Press.

2)      Welk, G.J. (2005). Principles of design and analyses for the calibration of accelerometry-based activity monitors. Medicine and Science in Sports and Exercise 37: S501-S511.

3)      Ritchie, L.D., Welk, G.J., Styne, D., Gerstein, D.E., & Crawford, P.B. (2005). Family environment and pediatric overweight:  What is a parent to do? Journal of the American Dietetic Association, 105(5 Supp.): s70-s79.

4)      Nigg, C., Hellsten, L., Norman, G., Burbank, P., Braun, L., Breger, R., Coday, M., Elliot, D., Garber, G., Greaney, M., Keteyian, S., Lees, F., Matthews, C., Moe, E., Resnick, B., Riebe, D., Rossi, J., Toobert, D., Wang, T., Welk, G. & Williams, G. (2005).  Physical activity staging distribution: establishing a heuristic using multiple studies. Annals of Behavioral Medicine,  29, No. 2, suppl, Pages 35-45.

5)      Welk, G.J., Corbin, C.B., & Dale, D. (2000) Measurement issues for the assessment of physical activity in children.  Research Quarterly for Exercise and Sport, 71(2 Suppl), S59-S73.

6)      Welk, G.J. (1999). The Youth Physical Activity Promotion Model: A conceptual bridge between theory and practice. Quest, 51, 5-23.

7)      Stone, E.J., McKenzie, T.L., Welk, G.J. & Booth, M.L. (1998). Effects of physical activity interventions in youth: Review and synthesis. American Journal of Preventive Medicine, 15, 298-315.

RESEARCH BASED BOOKS (Edited or Co-edited)

1)      Welk, G.J. (Ed.) (2002). Physical Activity Assessments for Health Related Research. Champaign, IL: Human Kinetics Publishers.

2)      Welk, G.J., & Morrow, J., & Falls, H (Eds) (2001). FITNESSGRAM Reference Guide. Dallas, TX: The Cooper Institute (see: www.fitnessgram.net). 
(online update to the FITNESSGRAM Technical Reference Manual. Human Kinetics, Champaign IL.)

RESEARCH-BASED BOOK CHAPTERS

1)      Marshall, S.J. & Welk, G.J. (2008). Defining and measuring physical activity and inactivity in young people. In: Smith, A.L. & Biddle, S.J.H. (Eds.). Youth Physical Activity and Inactivity: Challenges and Solutions. Champaign, IL: Human Kinetics Publishers. In Press.
2)      Welk G.J., Eisenmann, J.C., & Dollman, J. (2006). Physical activity, physical fitness and health: A bio-psychosocial approach. In: D. Kirk, M. O’Sullivan, & D. Macdonald (Eds.). Handbook of Physical Education Research. London, Sage Publishing. In Press.
3)      Welk G.J., & Blair, S.N. (2004). Physical activity protects against the health risks of obesity. In C. Corbin, R. Pangrazi and D. Franks (Eds.), Toward a Better Understanding of Physical Fitness and Activity (pp. 89-96.). Phoenix, AZ: Holcomb Hathaway Publishers.
4)      Welk, G.J., Babkes, M., & Schaben, J. (2004). Parental Influence in Youth Sports. In R. Malina and M Coelho e Silva (Eds), Children and Youth in Organized Sport (pp. 95-122). Coimbra University Press.
5)      Welk, G.J. (2002). Introduction to Physical Activity Research. In. G.J. Welk (Ed.),Physical Activity Assessments in Health Related Research (pp. 3-18). Champaign, IL: Human Kinetics Publishers.
6)      Dale, D., Welk, G.J., & Matthews, C.E. (2002). Selecting Appropriate Physical Activity Assessment Techniques. In G.J. Welk, G.J. (Ed.), Physical Activity Assessments in Health Related Research (pp. 19-34). Champaign, IL: Human Kinetics Publishers.
7)      Welk, G.J. (2002). Use of Accelerometry-Based Activity Monitors for the Assessment of Physical Activity. In G.J. Welk (Ed.), Physical Activity Assessments in Health Related Research (125-142). Champaign, IL: Human Kinetics Publishers.
8)      Welk, G.J., & Morrow, J. (2001). Physical Activity Assessments. In Welk, G.J., J. Morrow, & H. Falls (Eds.), FITNESSGRAM Reference Guide, Dallas TX: The Cooper Institute. (Online Resource Chapter - www.fitnessgram.net) 
9)      Welk, G.J. & Blair, S.N. (2001) Health Benefits of Physical Activity. In Welk, G.J., Morrow, J., and Falls, H. (Eds.). FITNESSGRAM Reference Guide. Dallas TX: The Cooper Institute. (Online Resource Chapter - www.fitnessgram.net)
10)  Meredith, M. & Welk, G.J. (2001). Interpreting FITNESSGRAM Reports. In Welk, G.J., Morrow, J., and Falls, H. (Eds.). FITNESSGRAM Reference Guide. Dallas TX: The Cooper Institute. (Online Resource Chapter - www.fitnessgram.net).

SERVICE-RELATED PUBLICATIONS

1)      Litchfield, R.E, Muldoon, J., Welk, G., Hallihan, J., & Lane, T. (2005) Lighten Up Iowa: An Interdisciplinary, Collaborative Health Promotion Campaign. Journal of Extension, 43(2), # 2FEA6.

2)      Ramey, S.L., Shelley, M.C., Welk, G.J., & Franke, W.D. (2003). Cardiovascular Disease Risk Reduction Efforts among Law Enforcement Officers: An Application of the Precede-Proceed Planning Model. Evidence-Based Preventive Medicine, 1, 43-52.

PROFESSIONAL PUBLICATIONS - NATIONAL CIRCULATION

1)      Seeger, C.J., Welk, G.J., and Erickson, S. (2008). Using global position systems (GPS) and physical activity monitors to assess the built environment. URISA Journal, 20(2): 5-12.

2)      Welk, G.J. (2008). The Role of Physical Activity Assessment for School-Based Physical Activity Promotion. Measurement in Physical Education and Exercise Science

3)      Welk, G.J. Joens-Matre, R. (2007). Effects of weight status on self-concept and psychosocial correlates of physical activity in youth. JOPERD. 78(8), 43-46.

4)      Welk, G.J. (2006). Strengthening the scientific basis of the FITNESSGRAM program. Journal of Physical Activity and Health, 3(2): S1-S4.

5)      Plowman, S.A., Sterling, C.L., Corbin, C.B., Meredith, M.D., Welk, G.J., & Morrow, J.R. The history of FITNESSGRAM. Journal of Physical Activity and Health, 3(2): S5-S20.

6)      Welk, G.J., & Blair, S.N., (2000). Physical activity protects against the health risks of obesity. President’s Council on Physical Fitness and Sports Research Digest, Series 3, no 12, p 1-8.

7)      Welk, G.J., & Wood, K. (2000).  Physical activity assessments in physical education: A practical review of instruments and their use in the curriculum. Journal of Physical Education, Recreation and Dance, 71(1), 30-40.

8)      Welk, G.J. (1999). Promoting physical activity in Children: Parental influences. ERIC Clearinghouse on Teaching and Teacher Education Washington DC. ERIC Digest No. ED436480 (Oct. 1999). Available online at http://www.ed.gov/databases/ERIC_Digests/ed436480.html.  

9)      Pangrazi, R.P., Corbin, C.B., & Welk, G.J. (1996). Physical activity for children and youth. Journal of Physical Education Recreation and Dance, 67(4), 38-43.

 

10)  Corbin, C.B., Pangrazi, R.P., & Welk, G.J. (1995). A response to "The Horse is Dead; Let's Dismount". Pediatric Exercise Science, 7, 347-351.

11)  Corbin, C.B., Pangrazi, R.P., & Welk, G.J. (1994). Toward an understanding of appropriate physical activity levels for youth. Presidents’s Council on Physical Fitness and Sports Research Digest, Series 1 No. 8.

 

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