Cycling is one of the most popular sports in the world and it is estimated that there is over 4 billion bikes world wide now. Some use cycling as a means of getting from A to B, whilst others cycle to boost their fitness and tone up their muscles. Generally speaking the type of cycling you do will affect how your muscles will adapt. If you cycle very long distances at relatively low intensity, your muscles will become very good at endurance and will build many slow-twitch fibres. Conversely, if you ride at a high intensity over shorter periods, you will develop more fast twitch (powerful) fibres and build muscle size. So which muscles get worked the hardest when you ride a bike.

Quadriceps (thigh muscles). Without doubt the muscles that produce most of the force when cycling are the quadriceps. These are the muscles that provide the rotating movement of the crack by placing down-force on the pedals. Racing bikes in fact are designed to locate the quads directly over the crack so that maximum efficiency is achieved. When travelling at speed the quadriceps contract and relax at an incredible rate and a great deal is demanded of them.

Gastrocnemius (calf muscles). The muscles of the calf work just as hard as those of the thigh, and relative to their size they produce a lot of power. Flexing the calf muscles when the leg is in a straight position, points the toes towards and adds a small boost to the overall power output. Pinarello make pedals that dynamically pivot to squeeze every last bit of power juice from the calf muscles.

Hamstrings. It may be the thigh muscles that provide most of the forward momentum when riding, but in order to flex the legs and prime them for the next downward push, it is the hamstrings that do the work. This doesn’t require much force on a standard bike as the rotation of the pedals pushes the leg up but when you use cycling shoes that clip to the pedals, a large amount of additional force can be generated by these muscles in the upward movement

This entry was posted on Tuesday, January 26th, 2010 at 4:56 pm and is filed under qualifing Sports. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.