Functional Hamstring to Quadriceps Strength Ratio (H:Q) and Hamstrings Injury of Soccer Players: A Qualitative Analysis

Soccer player’s continuously suffering from several lower extremity injuries. Hamstrings muscle injury is one of them. The game of soccer is body contact and intermittent nature. Most of the hamstring’s injury occurred due to less stretchable and strengthening ability of the muscles. Therefore, this injury appeared by non-body contact situation even though game has body contact difficulty. Muscle strength is one of the key factors in high performance and is an important indicator of the effectiveness of injury prevention in athletes [1,2]. However, one of the most used methods to assess muscle strength balance between dominant/ non-dominant and antagonist/agonist is isokinetic testing [2,3]. Therefore the sports scientist wants to develop a number of muscle strength methods especially lower limb strength. The hamstrings are a collection of muscles and their tendons at the back of the upper limb. The muscles bend the knee joint, adduct the leg, and extend the thigh to the rear end of the body. Strength of the hamstrings muscle alone is not the only main factor in injury prevention. The strength ratio of hamstring to quadriceps (H:Q) is necessary to provide sufficient development process for playing without injury. Quadriceps is naturally robust than the hamstring. So that, sometime this can overpower their hamstrings. This imbalance of hamstring to quadriceps strength ratio is often the reason of hamstrings injury [4,5]. Hamstring to quadriceps the highest torque strength ratio (H:Q) is one of the most usually assessed. To examine the functional capacity, the ratio of strength (H:Q) of agonist to antagonist knee muscles has been used [1]. Abstract