A few excerpts:
Big compounds: More testosterone?The fact that the absolute resistance exercise-induced increases in T and C concentrations were not significantly correlated with any nutritional variables indicates that other mechanisms are responsible for the acute hormonal responses to exercise stress. The significant increase in T after both the bench press and jump squat exercise protocols confirms that high-intensity resistance exercise results in elevated concentrations of T (5, 8, 18, 19, 29). The fact that T was increased by ~15% after the jump squat exercise compared with ~7% after the bench press exercise was most likely due to the greater muscle mass used in the jump squat (16, 20).
Maybe it's the zinc from meat?Results showed a reduced resting and postexercise increase in T concentrations in athletes consuming protein derived mainly from vegetable sources compared with a diet with protein derived mainly from animal sources.
These data are consistent with the findings of several other investigations that have reported a decrease in T in individuals consuming a diet containing ~20% fat compared with a diet containing ~40% fatToo much PUFA is bad, but it doesn't tell about omega 3/6 ratios.Our results showed a nonsignificant correlation between PUFA and T and a significant negative correlation between the PUFA/SFA ratio and T.