No shit huh, had always done Dynamics (arm swings, hip rotations, knee rotations)prior to combat training and I carried it over into weight training.
I have read a few times that Dynamic Stretching before weight training will temporarily increase strength.
Interesting study -
http://soar.wichita.edu/dspace/bitst.../grasp0622.pdf
Conclusion
There was a significant difference between static and dynamic stretching on vertical jump, but not on standing long
jump. No significant difference was found with any of the standing ling jump data due to technical difficulties with
the long jump mat sliding on the gym floor. Static stretching resulted in a decrease of performance while dynamic
stretching resulted in an increase in performance. Our findings suggest that when performing vertical jump, those
individuals who perform dynamic stretching will perform better than those who perform static stretching. Thus,
athletes performing lower extremity power movements should choose a dynamic stretching routine rather than a
static stretching routine immediately prior to competition to see greatest performance results.
Another study below shows "Acute effects of dynamic stretching exercise on power output "
http://www.ncbi.nlm.nih.gov/pubmed/18076260