45- 71. 1973. 8. Hoppeler, H., and S.L. Lindstedt. Malleability of skeletal muscle in ing limitations: Structural elements. J. Experim. Biol. 115:355- 364. 1985. 9. Sale, D.G. Influence of exercise and training on motor unit activation. Exerc. Sport Sci. Rev. pp. 95-151. 1987. 10. Saltin, B., and P.D. Golinick. Skeletal muscle adaptability: Significance for metabolism and performance. In: Handbook of Physiology. Skeletal Muscle. L. Peachy, R. Adrian, and S.R. Gerzer, eds. Bethesda: American Physiological Society, 1983. pp. 555- 63 1. Michael Feketehas worked with various fitness clubs as a strength and conditioning specialist. He has won several triathlons over the years and in September he essfully defended hi@ title as DiarnondMan Quadriathlon Long-Distance Master World Champion. 12