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I also read on a sprinting site that training (sprinting) on a stiff surface tends to make the tendons compliant, whereas training on a compliant surface tends to stiffen up the tendons... who knows if this is true.

Gym:

Foam roll/dynamic warmup/activation

Squat jumps: 4x3@15kgs

7 SVJs

Squat: warmup, 1x6@60kgs, 1x3@100kgs, 1x3@120kgs, 1x2@140kgs, 1x1@145kgs, 1x1@150kgs, 1x1@155kgs (1RM  at 78kgs)

<a href="http://www.youtube.com/watch?v=BknoBzx3pxU" target="_blank">http://www.youtube.com/watch?v=BknoBzx3pxU</a>

BW (with gym clothes on):



1.98xBW, not far off from 6RM estimate.

Good stuff... by the way, do you always stay a bit unlocked at the knee at the top position?

Quote from: Raptor on November 04, 2013, 08:23:53 am

I also read on a sprinting site that training (sprinting) on a stiff surface tends to make the tendons compliant, whereas training on a compliant surface tends to stiffen up the tendons... who knows if this is true.

Yeah I've read stuff like that as well. Sprinting on grass is better for tendon elasticity etc.

If your strong enough to sprint right on grass.  Nobody is really strong enough to sprint on soft sand, you going to collapse to some extent and load the hell out of the achilles on sand no matter what.  Maybe useful as a strength workout but will not carryover to sprinting.  Basically, if your a beginner you want to sprint on the hardest surface possible given that you can handle the pounding.  Get your nervous system used to short ground contacts first.  As you get more advanced you can start to play with soft surfaces like grass (but make sure the grass is REALLY even or better yet use field turf) but there is a learning curve switching back and force between surfaces. 

Quote from: Mutumbo000 on November 04, 2013, 08:28:11 am

Quote from: Raptor on November 04, 2013, 08:23:53 am

I also read on a sprinting site that training (sprinting) on a stiff surface tends to make the tendons compliant, whereas training on a compliant surface tends to stiffen up the tendons... who knows if this is true.

Yeah I've read stuff like that as well. Sprinting on grass is better for tendon elasticity etc.

If your strong enough to sprint right on grass.  Nobody is really strong enough to sprint on soft sand, you going to collapse to some extent and load the hell out of the achilles on sand no matter what.  Maybe useful as a strength workout but will not carryover to sprinting.  Basically, if your a beginner you want to sprint on the hardest surface possible given that you can handle the pounding.  Get your nervous system used to short ground contacts first.  As you get more advanced you can start to play with soft surfaces like grass (but make sure the grass is REALLY even or better yet use field turf) but there is a learning curve switching back and force between surfaces.

Yeah I agree, I wouldn't do it very often, just happened to be the only way I could do some exercise in the tiny little coastal town I was at. It was good training for general fitness as that's definitely what I'm lacking right now.

Are you sure you're not losing power landing on that mat? You bend quite a bit at the knee... and you're not really dorsiflexing too much (you're still pointing your toes down) but to be honest, I have no idea how much is enough and how much is not.

I'll try to film my depth jumps the next time I do them and compare them. I'll do it from 2 boxes as well.

Are you sure you're not losing power landing on that mat? You bend quite a bit at the knee... and you're not really dorsiflexing too much (you're still pointing your toes down) but to be honest, I have no idea how much is enough and how much is not.

I'll try to film my depth jumps the next time I do them and compare them. I'll do it from 2 boxes as well.

I don't really get depth jumps, what is the advantage over consecutive jumps? 

Also, is the point to go as high as possible?  If so don't you want a higher box?  I tried these one time and it seems like the higher the box the higher you can jump right until the box height is a bit higher than you can jump....  is that generally true?