More formally, chiroplasty, or cheiroplasty, is a term which refers to plastic surgery of the hands. The term combines root word chir(o), which means hand, and the suffix -plasty, which means surgical repair.
(How Do Your Muscles Work continued) Thousands of thin spaghetti-like fibers make up muscle tissue. These fibers receive messages from the brain, causing the fibers to contract. The main muscles at work in cycling are the quadriceps and hamstrings in the upper leg, and the gastrocnemius and soleus in the calf. These muscles contract in a sequence that creates the pedaling action. The quadriceps and hamstrings do most of the work when you ride a bicycle.
Quads and Hamstrings. Both running and cycling use the quadriceps and hamstrings, the cooperating upper and back thigh muscles. Your quads lift the leg for a stride when running or pedal rotation when cycling, while your hamstrings pull the leg back down.When you are running, your thigh muscles are the primary muscles.When you're cycling, the muscles are important to the mechanics of pedaling, but, when you pedal properly, they don't generate the main power source for the pedal rotation.hen you are running, your thigh muscles are the primary muscles. When you're cycling, the muscles are important to the mechanics of pedaling, but, when you pedal properly, they don't generate the main power source for the pedal rotation.