The aim of this study is to determine the effects of personal ergonomic adaptations of the bicycle on the bicycle performance parameters, together with the exercise program training created to prevent biomechanical problems that cause injuries in recreational cyclist.

Considering the pandemic period we are living in, people are much more interested in health, sports and nature than they used to be. From this perspective, the interest in cycling, which can accommodate all of these features at the same time, is rapidly increasing. Individuals take bicycle rides in nature in their free time and make this activity a way of life. However, as in every physical activity, factors such as lack of knowledge in cycling, choosing the wrong bike and material, and not knowing the important basics of sports cause non-traumatic injuries in cyclists.

While transitioning from the sedentary life brought by the age of technology to the activity, the musculoskeletal systems of individuals are caught unprepared and even exposed to various traumas and biomechanical problems. Because the looping motion of the lower extremities while cycling occurs primarily in the sagittal plane, power imbalances can develop that affect a cyclist's susceptibility to injury elsewhere along the kinetic chain. The most common areas of overuse injury in cycling are the knee, lumbar spine, cervical spine, hip, Achilles tendon, wrists, and forearm.

Inclusion Criteria:

• Recreational cycling for at least 1 year
• body mass index between 18.5-25 kg / m²
• Obtaining a written health report stating "there is no harm in using a bicycle"

Exclusion Criteria:

• History of fracture, trauma or surgery in the last 6 months
• have any systemic or neurological problems