1. Stretching;Anderson,1980
2. Muscle strength and gymnastics;Boone;Athletic J.,1975
3. The Oregon weightmen: A power philosophy;Burton;Nat. Strength Conditioning Assoc. J.,1980
4. Coe, S., and Gandy, G.: Seb Coe's secret, circuit training: The technique of the future. Runner's World, 45–49, 1980.
5. Yoga Conditioning and Football;Colletto,1975