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  Lack of mobility at the ankle, knee, or hip will negatively affect movement period.  The other joints have to take up the slack that the limited range area can not handle adequately.  Look at basketball players who always wore those stiff/elongated ankle braces, many developed knee issues shortly after.  If youre unsure of whether or not your ankle mobility is adequate, look at the ankle rocker tests on youtube. The fix is the test if youre lacking.

thanks, lance.

kinda confused by what I found online though. I may not have gone in depth enough but I had trouble finding anyone talk about plantar flexion. on wikipedia it says:

 "The range of motion for plantar flexion is usually indicated in the literature as 30° to 40°, but sometimes also 50°"

I'm finding it hard to test myself on what mine is but from the best i can see I'd say I maybe get around 45 degrees.

The reason I ask this really is because I saw this video posted by joel smith which shows gerald green jumping and he gets really good downward flexion and comparing it with a video of my own jumping he definitely gets a fair bit more than me.

<a href="http://www.youtube.com/watch?v=jaI8DsdGcgA" target="_blank">http://www.youtube.com/watch?v=jaI8DsdGcgA</a>

I've always had no trouble what so ever squatting atg so I'm pretty sure my dorsi flexion is cool.

thanks, lance.

kinda confused by what I found online though. I may not have gone in depth enough but I had trouble finding anyone talk about plantar flexion. on wikipedia it says:

 "The range of motion for plantar flexion is usually indicated in the literature as 30° to 40°, but sometimes also 50°"

I'm finding it hard to test myself on what mine is but from the best i can see I'd say I maybe get around 45 degrees.

The reason I ask this really is because I saw this video posted by joel smith which shows gerald green jumping and he gets really good downward flexion and comparing it with a video of my own jumping he definitely gets a fair bit more than me.

<a href="http://www.youtube.com/watch?v=jaI8DsdGcgA" target="_blank">http://www.youtube.com/watch?v=jaI8DsdGcgA</a>

I've always had no trouble what so ever squatting atg so I'm pretty sure my dorsi flexion is cool.

Much of that is going to be highly influenced by achilles tendon length,  jumping mechanics, and foot length.   ITs also important to note when looking at elite jumpers, the way the achilles tendon is measured is actually checking dorsi flexion in the athlete, so a longer achilles= better results there without any type of mobility work whatsoever.

 It is always important to work on going from dorsi to plantar flexion when jumping/sprinting , especially during submax hops/drills, but it would be impossible to compare two different athletes with different achilles tendon lengths, foot legths, and plant styles on a relative scale.

Kelly was recommending every day stretching for the calves... he said they tend to respond very well to this.

IMO, if you have posture issues (anterior/posterior pelvic tilt, thoracic mobility issues etc) it's a good idea to do it daily. I'm too lazy to do it though.

Would you hold that stretched position under weight (actively) or just maintain that stretched position without necessarily having weight on?

I guess since you said "calf raise" you also meant "under weight".