1. Shephard, R. J. (1984),Sports Med.
1, 99–124.
2. Blackie, S. P., Fairbarn, M. S., McElvaney, G. N., Morrison, N. J., Wilcox, P. G., and Pardy, R. L. (1989),Am. Rev. Resp. Dis.,139, 1424–1429.
3. Jones, N. L. (1988),Clinical Exercise Testing, 3rd Ed., Saunders, Philadelphia.
4. Wasserinan, K., Hansen, J. E., Sue, D. Y., and Whipp, B. J. (1987),Principles of Exercise Testing and Interpretation, Lea and Febiger, Philadelphia.
5. Ries, A. L., Farrow, J. T., and Clausen, J. L. (1985),Am. Rev. Resp. Dis.
132, 685–689.