Well known as a youthful icon, and attracted to the benefits of plastic surgery for celebrity image, she has called herself â the plastic surgery poster girl â. However, she has denied having procedures such as cheek implants.
1. Slow twitch fibres (Type I): Slow twitch fibres contract slowly but can contract repeatedly over long periods. They have a good blood supply, hence they are âred fibresâ, and are suited to endurance activity using the aerobic energy system which relies on oxygen from the blood for the supply of energy.
Heart muscle fibers contract even more slowly than Type II slow twitch skeletal muscles. They are completely dependent on O2 as an energy source, and have even more mitochondria than a skeletal slow twitch muscle. At the same time cardiac muscle contraction requires a LOT of ATP.