... energy source unless not enough calories and carbohydrate are consumed. One gram of protein equals 4 calories. PSI: Abbreviation for pounds per square inch. The unit of measure for tire inflation and air pressure in some suspensions. Pull, pull through:... Bicycling Magazine's Complete Book of Road Cycling Skills: Your Guide to ... - Pagina 214 geredigeerd door - 1998 - 240 pagina’s Gedeeltelijke weergave -
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