Bicycle Fit In addition to strength, fitness, and technique, the interface between the cyclist and the bicycle must be considered in the assessment of the cyclist.Bicycles are designed for specific demands, from racing performance, to comfort and stability in traffic, to carrying heavy loads or children. The frame geometry, handlebar shape, saddle, and pedal system are selected based on the desired body position and function (Fig. 2).Improper body position on the bicycle can contribute to a number of overuse ailments (6,25,41,42). Small adjustments, particularly atthe body’s interface withthe bicycle, can affect the rider’s biomechanics throughout the kinetic chain, improving comfort, efficiency, and power generation.