The newest animation (not finished yet)!
I remember seeing this in pixeljoint.com and I commented on it. I didn't realize you posted it here as well, after a bit of perusing in the animation section. I was kinda' confused as to how the character was physically pulling off the move as the way his arm is bending when he leans back on the ground seemed a bit unrealistic(ignoring the 'it's a cartoon'/'style' excuses).
I wanted to make sure that I was seeing what I was thinking I was seeing correctly, so I colored in the limbs certain colors to tell which were which. Whether they are the front or backs is irrelevant, as animating something like this should be extremely clear as to what the character is doing. In this case, the one tone character's movement is seen a bit more clearly with the lines, which you can see below:
The confusion is that when someone does a kick-up, they don't move their arms behind them like your character is seemingly doing in your animation. Doing so would cause one's arms to break by the sheer weight caused by the off-balance, if they were to just jump backward the way your character is. I suppose an animation is in call as to understand just what exactly I'm seeing when I view your animation:
I tried to redo the animation, both with the colored limbs and non-colored limbs, so you can see a different method/approach to the movement. Normally, if someone is trying to do a stand-to-ground kick-up, they'd use the upper-back as a landing pad. The arms would move in front and over their heads, landing above the shoulders while grounded, so they can help as the stabilization for the spring created by the body when he pops up. Other details would be sizing and maintaining proportions with your character's limbs and such. Also, I felt like the attack from the kick-up needed a bit of a better arch so I extended that leg a bit, but brought it in as he landed. Either way, I know you're already finished with it. I just wanted to add my two cents to the issue. Here it is, below:
ps, don't be afraid to try different shapes with your characters! Experiment and move away from the stick-figures or silhouettes.