Never tried negatives for calves, if you were looking to put on size, i'm guessing they would be of benefit. If you were going to do them make sure you have something to stop your heel so you feet dong go past 90-100 degree dorsiflexion... Once your shin angle is < 90 that's where I could see injury occurring..
unless your a bodybuilder though, i wouldn't bother trying to develop the calves, just learn to live with what you got..
"unless your a bodybuilder though, i wouldn't bother trying to develop the hamstrings, just learn to live with what you got.."
"unless your a bodybuilder though, i wouldn't bother trying to develop the glutes, just learn to live with what you got.."
"unless your a bodybuilder though, i wouldn't bother trying to develop reactive ability, just learn to live with what you got.."
"unless your a bodybuilder though, i wouldn't bother trying to develop explosive strength, just learn to live with what you got.."
"unless your a bodybuilder though, i wouldn't bother trying to develop maximal strength, just learn to live with what you got.."
etc
verkhoshansky prescribes calf raises for a reason.. I know he's not the end all be all in s&c ideology, but, it only makes sense to train the calf just like how you train the glutes/hamstrings, which are less developed primarily fast twitch muscle groups. The gastrocs are highly fast twitch, but that's not to say that they learn to develop maximal forces from sprinting/plyos alone. A very small, unnoticable amount of hypertrophy could lead to some serious strength gains in the gastrocs. Strength can also be gained without hypertrophy, of course.. It's similar to people who want to improve jump shot range; the overall mindset is to just practice shooting from further out, but more gains can be made if the trainee shoot from further out AND improves overall upper & lower body strength, which entails holding on to progressively heavier db's, which also helps develop the wrist flexors. The upper body is unlike the lower body in terms of weight training, the muscles of the feet/toes/lower leg gain much less strength when weightlifting than the hands/fingers/wrists/forearm.. The feet play a major roll in jumping/sprinting etc, as we both know, being able to 'flick' the feet just like you can 'flick' the wrist will give you considerable gains in power in regards to jumping.. that reflexive flick during sprinting is just as important.
pc