American College of Sports Medicine. (2000) Guidelines for exercise testing and prescription. 6th edition. Philadelphia, PA: Lippincott Williams and Wilkins.

American College of Sports Medicine. (2006) Guidelines for exercise testing and prescription. 7th edition. Philadelphia, PA: Lippincott Williams & Wilkins.

Allen, P.D. and Pandolf, K.B. (1977). Perceived exertion associated with breathing hyperoxic mixtures during submaximal work. Medicine and Science in Sports and Exercise 99(2), 122-127.

Borg, G. and Dahlstrom, H. (1962) The reliability and validity of a physical work test. Acta Physiologica Scandinavica 555, 353-361.

Cafarelli, E. (1977) Peripheral and central inputs to the effort sense during cycling exercise. European Journal of Applied Physiology and Occupational Physiolog, 337(3), 181-189.

Cafarelli, E. (1982) Peripheral contributions to the perception of effort. Medicine and Science in Sports and Exercise 114(5), 382-389.

Demello, J.J., Cureton, K.J., Boineau, R.E. and Singh, M.M. (1987) Ratings of perceived exertion at the lactate threshold in trained and untrained men and women. Medicine and Science in Sports and Exercise 119(4), 354-362.

Edwards, R.H., Melcher, A., Hesser, C.M., Wigertz, O. and Ekelund, L.G. (1972) Physiological correlates of perceived exertion in continuous and intermittent exercise with the same average power output. European Journal of Clinical Investigation 22(2), 108-114.

Glass, S.C., Knowlton, R.G. and Becque, M.D. (1992) Accuracy of RPE from graded exercise to establish exercise training intensity. Medicine and Science in Sports Exercise 224(11), 1303-1307.

Kamon, E., Pandolf, K. and Cafarelli, E. (1974) The relationship between perceptual information and physiological responses to exercise in the heat. Journal of Human Ergology (Tokyo) 33(1), 45-54.

Mahon, A.D., Gay, J.A. and Stolen, K.Q. (1998) Differentiated ratings of perceived exertion at ventilatory threshold in children and adults. European Journal of Applied Physiology and Occupational Physiology 778(2), 115-120.

Pandolf, K.B., Burse, R.L. and Goldman, R.F. (1975) Differentiated ratings of perceived exertion during physical conditioning of older individuals using leg-weight loading. Perceptual Motor Skills 440(2), 563-574.

Robertson, R.J., Caspersen, C.J., Allison, T.G., Skrinar, G.S., Abbott, R.A. and Metz, K.F. (1982) Differentiated perceptions of exertion and energy cost of young women while carrying loads. European Journal of Applied Physiology and Occupational Physiology 449(1), 69-78.

Robertson, R.J., Gillespie, R.L., McCarthy, J. and Rose, K.D. (1979a) Differentiated perceptions of exertion: part I. mode of integration of regional signals. Perceptual Motor Skills 449(3), 683-689.

Robertson, R.J., Gillespie, R.L., McCarthy, J. and Rose, K.D. (1979b) Differentiated perceptions of exertion: part II relationship to local and central physiological responses. Perceptual Motor Skills 449(3), 691-697.

Robertson, R.J., Goss, F.L., Boer, N., Gallagher, J.D., Thompkins, T., Bufalino, K., Balasekaran, G., Meckes, C., Pintar, J. and Williams, A. (2001). OMNI scale perceived exertion at ventilatory breakpoint in children: response normalized. Medicine and Science in Sports and Exercise 333(11), 1946-1952.

Robertson, R.J., Goss, F.L., Dube, J., Rutkowski, J., Dupain, M., Brennan, C., and Andreacci, J. (2004) Validation of the adult OMNI scale of perceived exertion for cycle ergometer exercise. Medicine and Science in Sports and Exercise 336(1), 102-108.

Robertson, R.J., Moyna, N.M., Sward, K.L., Millich, N.B., Goss, F.L., and Thompson, P.D. (2000) Gender comparison of RPE at absolute and relative physiological criteria. Medicine and Science in Sports and Exercise, 332(12), 2120-2129.

Robertson, R.J. and Noble, B.J. (1997) Perception of physical exertion: methods, mediators, and applications. Exercise and Sport Science Review 225, 407-452.

Rutkowski, J.J., Robertson, R.J., Tseh, W.D., Caputo, J.L., Keefer, D.J., Sutika, K.M., and Morgan, D.W. (2004).Assessment of RPE signal dominance at slow-to-moderate walking speeds in children using the OMNI Perceived Exertion Scale. Pediatric Exercise Science 116, 334-342.

Seip, R. L., Snead, D., Pierce, E. F., Stein, P. and Weltman, A. (1991) Perceptual responses and blood lactate concentration: effect of training state. Medicine and Science in Sports and Exercise 223(1), 80-87.

Weiser, P.C. and Stamper, D.A. (1977) Psychophysiological interactions leading to increased effort, leg fatigue, and respiratory distress during prolonged, strenuous bicycle riding. In: Physical work and effort. Ed: Borg, G. New York: Pergamon Press. 401-416.