5 isotonic muscle contractions - the movement of muscles from beginning to end of the clean and jerk weightlifting motion
- rectus femoris (lengthens and shortens)
- Vastus lateralis (lengthens then shortens)
- vastus medialis (lengthens and shortens)
- Gluteus maximus (lengthens then shortens)
- soleus (lengthens then shortens)
*lengthening of the muscles above provided the stability Hidilyn Diaz needed as she tried to initiate the weightlifting motion
*shortening of the muscles above provided Hidilyn Diaz the force to reach the end phase of the weightlifting motion
5 isometric muscle contractions - The type of muscle contractions were necessary for promoting the posture’s stability across the path of the weightlifting motion.
- adductor magnus
- quadratus femoris
- gluteus medius
- gluteus minimus
- tensor fasciae latae.