The aim of this research study was to determine the twist limits for double somersaults on trampoline with the twist in the second somersault. An angle-driven computer simulation model of aerial movement was used to determine the maximum number of half twists that could be produced in a double somersault using asymmetrical movements of the arms and hips. Simulations of two limiting movements were found using simulated annealing optimisation to produce the required amounts of somersault, tilt and twist at landing after a flight time of 2.0 s. It was found that 3½ twists could be produced in the second somersault of a forward piked double somersault with arms abducted 8o from full adduction during the twisting phase and that 3 twists could be produced in the second somersault of a backward straight double somersault with arms fully adducted.
Yeadon, Maurice and Hiley, Michael
"TWIST LIMITS OF LATE TWISTING DOUBLE SOMERSAULTS ON TRAMPOLINE,"
ISBS Proceedings Archive: Vol. 35
, Article 31.
Available at: http://commons.nmu.edu/isbs/vol35/iss1/31