REFERENCES

Centers for Disease Control, (2000) Prevalence of leisure-time physical activity among overweight adults-United States, 1998. Morbidity & Mortality Weekly Report 49(15), 326-330.

Cardinal, B.J. (1997) Construct validity of stages of change for exercise behavior. American Journal of Health Promotion 12(1), 68-74.

Hammond, S.L., Leonard, B. and Frindinger F. (2000) The centers for disease control and prevention director's physical activity challenge: An evaluation of a worksite health promotion intervention. American Journal of Health Promotion 15(1), 17-20.

Herrick, A.B., Stone, W.J. and Mettler, M.M. (1997) Stages of change, decisional balance, and self-efficacy across four health behaviors in a worksite environment. American Journal of Health Promotion 12(1), 49-56.

Marcus, B. H., Emmons, K. M., Simkin-Silverman, L.R., Linnan, L.A., Taylor, E.R., Bock, B.C., Roberts, M.B., Rossi, J.S., and Abrams, D.B. (1998). Evaluation of motivationally tailored vs. standard self-help physical activity interventions at the workplace. American Journal of Health Promotion 12(4), 246-253.

Marcus, B.H. and Simkin L.R. (1993) The stages of exercise behavior. Journal of Sports Medicine and Physical Fitness 33, 83-88.

Marcus, B.H., Simkin L.R., Rossi, J.S. and Pinto, B.M. (1996) Longitudinal shifts in employees' stages and processes of exercise behavior change. American Journal of Health Promotion 10(3), 218-221.

Maloof, R.M., Zabik, R.M. and Dawson, M. L. (2001) The effect of use of a personal trainer on improvement of health related fitness for adults. Medicine and Science in Sports and Exercise 33(5), s74.

Mazetti, S.A., Kraemer, W.J., Volek, J.S., Duncan, N.D. Ratamess, N. A., Gomez, A. L., Newton, R.U., Hakkinen, K. and Fleck, S.J. (2000) The influence of direct supervision of resistance training on strength performance. Medicine and Science in Sports and Exercise 32(6), 1175-1184.

Naylor, P.J., Simmonds, G., Riddoch, S. Velleman, G. and Turton, P. (1999) Comparison of stage-matched and unmatched interventions to promote exercise behavior in the primary care setting. Health Education Research 14, 653-666.

Nichols, J.F., Wellman, E., Caparosa, S., Sallis, J.F., Calfas, K.J. and Rowe, R. (2000) Impact of a worksite behavioral skills intervention. American Journal of Health Promotion 14(4), 218-221.

Pate, R.R., Pratt, M., Blair, S.N. Haskell, W.L., Macera, C.A., Bouchard, C., Buchner, D., Ettinger, W., Health, G.W., King, A.C., Kriska, A., Leon, A.S., Marcus, B.H., Morris, J., Paffenbarger, R.S., Patrick, K., Pollock, M.L., Rippe, J.M., Sallis, J. and Wilmore, J.H. (1995). Physical activity and public health: a recommendation from the Centers for Disease Control and the American College of Sports Medicine. JAMA 273, 402-407.

Prochaska, J. O. and Velicer, W. F. (1997) The transtheoretical model of health behavior change. American Journal of Health Promotion 12, 38-48.

Wing, R.R., Jeffrey, R.W., Pronk, N., and Hellerstedt, W. L., (1996) Effects of a personal trainer and financial incentives on exercise adherence in overweight women in a behavioral weight loss program. Obesity Research 4(5), 457-462.