IGF-1 (Insulin-Like Growth Factor 1). IGF-1 or insulin-like growth factor 1 (brand name: Increlex) is a growth factor which is very closely related to insulin. It carries the same amount of amino acids as insulin and responsible for the anabolic reactions to GH.
Spring pressure is the key factor in determining which spring should be used for which application. Camshaft design also plays an important role in determining which spring you will need. Lift is the critical spec when matching valve springs to the camshaft. The more lift you have the greater the pressure needs to be.
Preload, Compression and Rebound. Preload is the amount of pressure on the shock/forks spring when it is in an extended position. Air forks adjust this by adding or removing pressure coil sprung forks have a way to compress or extend the spring by turing a knob. .