1. American College of Sports Medicine (1980). Guidelines for Graded Exercise Testing and Exercise Prescription. Lea and Febiger, Philadelphia.
2. American college of sports medicine position statement on the recommended quantity and quality of exercises for developing and maintaining fitness in healthy adults (1978). Med, Sci. Sports, 10, vii-ix.
3. Astrand, P.O. and Rodahl, K. (1977). Second edition. Textbook of Work Physiology. McGraw — Hill Book Co., New York.
4. Bellew, K. and Burke E.J. (1983). Reliability and validity of RPBAT. A paper delivered at the 1983 AAHPERD national convention, Minneapolis.
5. Borg, G.V. (1973). Perceived exertion: a note on history and methods. Med. Sci. Sports, 5, 90–93.